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产品型号ZXCL280H5TA的概述

芯片ZXCL280H5TA的概述 ZXCL280H5TA是一款广泛应用于电源管理和电压调节领域的集成电路。此芯片由Zetex Semiconductor公司开发，旨在为各种电子设备提供稳定且高效的电源解决方案。ZXCL280H5TA具有较高的性能、低待机功耗及高集成度，是设计中常见的电压参考和线性稳压器的理想选择。因其优异的特性，ZXCL280H5TA在消费电子、工业控制及通讯设备等多个场合都有广泛应用。芯片ZXCL280H5TA的详细参数 ZXCL280H5TA具备多项技术参数，使其在同类产品中脱颖而出： - 输入电压范围：2.7V-5.5V - 输出电压：固定输出（2.8V） - 最大输出电流：可达到150mA - 输出精度：±2% - 动态响应时间：约为100μs - 工作温度范围：-40°C至85°C - 封装类型：SOT-23-5 - 待机功耗：超低功耗设计，通常在几个微安...

产品型号ZXCL280H5TA的Datasheet PDF文件预览

ZXCL SERIES

Micropower SC70-5 & SOT23-5 low dropout regulators

ZXCL5213V25, ZXCL5213V26, ZXCL5213V28, ZXCL5213V30, ZXCL5213V33,

ZXCL250, ZXCL260, ZXCL280, ZXCL300, ZXCL330

Description

Features

The ZXCL series have been designed with space

sensitive systems in mind. They are available in

the ultra small SC70-5 package, which is half the

size of SOT23 based regulators.

•

Low 85mV dropout at 50mA load

50 A ground pin current with full 150mA load

␮

2.5, 2.6, 2.8, 3, & 3.3 volts output

Very low noise, without bypass capacitor

5-pin SC70 and SOT23 package

No-load stable

The devices can be used with all types of output

capacitors including low ESR ceramics and

typical dropout voltage, is only 85mV at 50mA

load. Supply current is minimised with a ground

pin current of only 50␮A at full 150mA load.

Applications

Logic control allows the devices to be shut

down, consuming typically less than 10nA.

These features make the device ideal for battery

powered applications where power economy is

critical.

•

Cellular and Cordless phones

PDA

Hand held instruments

Camera, Camcorder, Personal stereo

PC cards

For

applications

requiring

improved

performance over alternative devices, the

ZXCL is also offered in the 5 pin SOT23

package with an industry standard pinout.

Portable and battery-powered equipment

The devices feature thermal overload and

over-current protection and are available with

output voltages of 2.5V, 2.6V, 2.8V, 3V, 3.3V.

No-Load Stability, the ZXCL device will maintain regulation and

is stable with no external load. e.g. CMOS RAM applacations.

Typical application circuit

Package footprint

SOT23-5 (see P7 for SC70-5)

Package suffix - E5

V_IN

GND

V_O

Top view

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Ordering information

Order reference

Voltage

Package

Part

marking

Status

Reel size

(inches)

Tape

width

(mm)

Quantity

per reel

(V)

ZXCL250H5TA

2.5

2.6

2.8

3.0

3.3

4.0

2.5

2.6

2.8

3.0

3.3

4.0

SC70-5

L25A

L26A

L28A

L30A

L33A

L40A

L25C

L26C

L28C

L30C

L33C

L40C

Active

Obsolete

Active

3000

ZXCL260H5TA

ZXCL280H5TA

ZXCL300H5TA

ZXCL330H5TA

ZXCL400H5TA

ZXCL5213V25H5TA

ZXCL5213V26H5TA

ZXCL5213V28H5TA

ZXCL5213V30H5TA

ZXCL5213V33H5TA

ZXCL5213V40H5TA

Not rec.

for new

designs

ZXCL250E5TA

ZXCL260E5TA

ZXCL280E5TA

ZXCL300E5TA

ZXCL330E5TA

ZXCL400E5TA

2.5

2.6

2.8

3.0

3.3

4.0

SOT23-5

L25B

L26B

L28B

L30B

L33B

L40B

Active

3000

Active

Obsolete

Absolute maximum rating

Terminal Voltage with respect to GND

Output short circuit duration Infinite

-0.3V to 7.0V

-0.3V to 10V

-0.3V to 5.5V

Continuous power dissipation Internally limited

Operating temperature range -40°C to +85°C

Storage temperature range

-55°C to +125°C

Package power dissipation (T =25°C)

SC70-5

300mW (Note 1)

450mW (Note 1)

SOT23-5

Stresses beyond those listed under “Absolute maximum ratings” may cause permanent damage

to the device. These are stress ratings only, and functional operation of the device at these or any

other conditions beyond those indicated in the operational sections of the specifications is not

implied. Exposure to absolute maximum conditions for extended periods may affect device

reliability.

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Recommended operating conditions

Symbol Parameter

Min

Max

Units

Input voltage range

2.0*

5.5

Enable pin logic level High pin

Enable pin logic level Low pin

Ambient temperature range

2.2

0.8

ENH

ENL

-40

°C

Output voltage will start to rise when V_INexceeds a value or approximately 1.3V. For normal operation,

_IN(min)> V_OUT(nom)+ 0.5V.

Pin description

Symbol Parameter

Supply voltage

Ground

Active HIGH enable input. TTL/CMOS logic compatible. Connect to V

or logic high for normal operation

N/C

No connection

Regulator output

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Electrical characteristics

V = V = 0.5V, all values at T = 25°C (Unless otherwise stated)

Symbol Parameter

Conditions

Limits

Units

Min. Typ. Max.

Output voltage

I =1mA

-2%

+2%

I =100mA

V +0.5V < V < V max

-3%

+3%

⌬V /⌬T Output voltage

-15

ppm/°C

temperature

coefficient

Output current

150

O(Max)

OLIM

XCL250/5213V25 only

100

160

Over current limit

800

XCL250/5213V25 only

No Load

105

230

750

120

Ground pin

current

␮A

I =150mA

I =100mA

100

␮A

%/V

Dropout voltage

note 3

I =10mA

All variants

I =50mA

I =100mA ZXCL250 / 5213V25

163

155

140

0.02

325

310

280

0.1

I =100mA ZXCL260 / 5213V26

I =100mA ZXCL280 / 5213V28

I =100mA ZXCL300 / 5213V30

I =100mA ZXCL330 / 5213V33

I =100mA ZXCL400 / 5213V40

⌬V

Line regulation

Load regulation

V =(V +0.5V) to 5.5V, I =1mA

IN O O

LNR

LDR

I =1mA to 100mA

0.01 0.04 %/mA

Output noise

voltage

f=10Hz to 100kHz, C =10␮F

␮V

RMS

Enable pin

hysteresis

150

ENHS

Enable pin input

current

Shutdown supply

current

Thermal shutdown

temperature

=5.5V

=0V

100

␮A

°C

OSD

125

165

Device testing is performed at T_A=25°C. Device thermal performance is guaranteed by design.

Note1: Maximum power dissipation is calculated assuming the device is mounted on a PCB measuring 2 inches square

Note2:Output voltage will start to rise when V_INexceeds a value or approximately 1.3V. For normal operation,

V_IN(min)> V_OUT(nom)+ 0.5V.

Note3:Dropout voltage is defined as the difference between V_INand V_O, when V_Ohas dropped 100mV below its nominal

value. Nominal value of V_Ois defined at V_IN=V_O+0.5V.

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Typical characteristics (ZXCL280 / 5213 shown)

0.25

0.20

0.15

0.10

0.05

0.00

V_IN

I_OUT= 100mA

I_OUT= 1mA

100

125

150

175

Output Current (mA)

Input Voltage (V)

Input to Output Characteristics

Dropout Voltage v Output Current

25.0

24.8

24.6

24.4

24.2

24.0

23.8

23.6

23.4

23.2

23.0

2.81

2.80

2.79

V_IN= 3.3V

No Load

V_IN= 3.3V

No Load

-50

-25

-50

-25

100

Temperature (˚C)

Output Voltage v Temperature

Temperature (˚C)

Ground Current v Temperature

No Load

V_IN= 5V

V_IN= 3.3V

100

125

150

Input Voltage (V)

Ground Current v Input Voltage

Load Current (mA)

Ground Current v Load Current

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Typical characteristics

400

100

V_IN= 5V

I_L= 1mA to 50mA

C_OUT= 1μF

Enable

350

300

V_IN= 5V

I_L= 1mA

I_L= 100mA

100

C_OUT= 1μF

C_OUT= 10μF

V_IN= 3.3V

I_L= 1mA

I_L= 100mA

C_OUT= 10μF

-50

C_OUT= 1μF

-100

10 20 30 40 50 60 70 80 90 100

0.0

0.1

0.2

0.3

0.4

0.5

Time (μs)

Start-Up Response

Time (ms)

Load Response

C_OUT= 1μF

T_r& T_f= 2.5μs

C_OUT= 1μF

T_r& T_f= 2.5μs

-1

-2

-10

-2

-10

-3

-20

-4

0.0

0.1

0.2

0.3

0.4

0.5

0.0

0.1

0.2

0.3

0.4

Time (ms)

Line Rejection I_L= 1mA

Time (ms)

Line Rejection I_L= 100mA

All Caps Ceramic

Surface Mount

I_L= 100mA, C_OUT= 1μF

I_L= 100mA, C_OUT= 10μF

I_L= 50mA

C_OUT= 10μF

C_OUT= 2.2μF

0.1

0.01

No Load, C_OUT= 1μF

No Load, C_OUT= 10μF

C_OUT= 1μF

100

10k

100k

100

10k

100k

Frequency (Hz)

Power Supply Rejection v Frequency

Frequency (Hz)

Output Noise v Frequency

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Connection diagrams

SC70-5 (H5)

E_N

N/C*

G_ND

V_IN

V_O

GND

V_O

Top view

* Should be left open circuit

or connected to pin 3

ZXCLxxx

ZXCL5213Vxx

Schematic diagram

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Input to Output Diode

Increased Output current

In common with many other LDO regulators, the

ZXCL device has an inherent diode associated

with the output series pass transistor. This diode

has its anode connected to the output and its

cathode to the input. The internal diode is

normally reverse biased, but will conduct if the

output is forced above the input by more than a

VBE (approximately 0.6V). Current will then flow

Any ZXCL series device may be used in

conjunction with an external PNP transistor to

boost the output current capability. In the

application circuit shown below, a FMMT717

device is employed as the external pass

element. This SOT23 device can supply up to

2.5A maximum current subject to the thermal

dissipation limits of the package (625mW).

Alternative devices may be used to supply

higher levels of current. Note that with this

arrangement, the dropout voltage will be

from V

to V . For safe operation, the

out

maximum current in this diode should be

limited to 5mA continuous and 30mA peak. An

external schottky diode may be used to provide

protection when this condition cannot be

satisfied.

increased by the V drop of the external device.

Also, care should be taken to protect the pass

transistor in the event of excessive output

current.

Scheme to boost output current to 2A

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Applications information

Enable control

A TTL compatible input is provided to allow the

regulator to be shut down. A low voltage on the

Enable pin puts the device into shutdown mode.

In this mode the regulator circuit is switched off

and the quiescent current reduces to virtually

zero (typically less than 10nA) for input voltages

above the minimum operating threshold of the

device. A high voltage on the Enable pin ensures

normal operation.

The Enable pin can be connected to V or

driven from an independent source of up to 10V

maximum. (e.g. CMOS logic) for normal

operation. There is no clamp diode from the

Figure 1 Circuit Connection

Enable pin to V , so the V pin may be at any

voltage within its operating range irrespective

of the voltage on the Enable pin. However input

voltage rise time should be kept below 5ms to

ensure consistent start-up response.

Current Limit

The ZXCL devices include a current limit circuit

which restricts the maximum output current

flow to typically 230mA. Practically the range of

over-current should be considered as minimum

160mA to maximum 800mA. The device’s

robust design means that an output short circuit

to any voltage between ground and V

tolerated for an indefinite period.

can be

Figure 2 Start up delay (T )

OUT

Thermal Overload

Thermal overload protection is included on

chip. When the device junction temperature

exceeds a minimum 125°C the device will shut

down. The sense circuit will re-activate the

output as the device cools. It will then cycle until

the overload is removed. The thermal overload

protection will be activated when high load

currents or high input to output voltage

differentials cause excess dissipation in the

device.

V_IN

− 1.5

⎛

⎜

⎝

⎞

⎟

⎠

T_d(NOM)= RCIn

Calculation of start up delay as above

Start up delay

A small amount of hysteresis is provided on the

Enable pin to ensure clean switching. This

feature can be used to introduce a start up delay

if required. Addition of a simple RC network on

the Enable pin provides this function. The

following diagram illustrates this circuit

connection. The equation provided enables

calculation of the delay period.

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Applications information (Cont)

Power dissipation

The dielectric of the ceramic capacitance is an

important consideration for the ZXCL Series

operation over temperature. Zetex recommends

minimum dielectric specification of X7R for the

input and output capacitors. For example a

ceramic capacitor with X7R dielectric will lose 20%

The maximum allowable power dissipation of

the device for normal operation (P

), is a

max

function of the package junction to ambient

thermal resistance ( ), maximum junction

temperature (Tj

), and ambient temperature

max

of its capacitance over a -40

range, whereas a capacitor with a Y5V dielectric

loses 80% of its capacitance at -40 C and 75% at

85 C.

ЊC to 85ЊC temperature

), according to the expression:

amb

= (Tj

– T

) / θ

max

amb ja

The maximum output current (I

) at a given

max

An input capacitor of 1␮F (ceramic or tantalum) is

recommended to filter supply noise at the device

input and will improve ripple rejection.

value of Input voltage (V ) and output voltage

) is then given by

OUT

The input and output capacitors should be

positioned close to the device, and a ground plane

board layout should be used to minimise the

= P

/ (V - V

)

max

OUT

The value of qja is strongly dependent upon the

type of PC board used. Using the SC70 package effects of parasitic track resistance.

it will range from approximately 280°C/W for a

Dropout voltage

multi-layer board to around 450°C/W for a single

sided board. It will range from 180°C/W to

300°C/W for the SOT23-5 package. To avoid

entering the thermal shutdo wn state, Tjmax

should be assumed to be 125°C and Imax less

The output pass transistor is a large PMOS device,

which acts like a resistor when the regulator enters

the dropout region. The dropout voltage is

therefore proportional to output current as shown

in the typical characteristics.

than the over-current limit,(I

). Power

OLIM

derating for the SC70 and SOT23-5 packages is

shown in the following graph.

Ground current

500

The use of a PMOS device ensures a low value of

ground current under all conditions including

dropout, start-up and maximum load.

400

SOT23

300

Power supply rejection and load transient

response

200

SC70

Line and Load transient response graphs are

shown in the typical characteristics.

100

These show both the DC and dynamic shift in the

output voltage with step changes of input voltage

and load current, and how this is affected by the

output capacitor.

-40

-20

100

Temperature (°C)

Derating Curve

Capacitor selection and regulator stability

If improved transient response is required, then an

output capacitor with lower ESR value should be

used. Larger capacitors will reduce over/

The device is designed to operate with all types

of output capacitor, including tantalum and low

ESR ceramic. For stability over the full operating undershoot, but will increase the settling time.

range from no load to maximum load, an output

capacitor with a minimum value of 1 F is

Best results are obtained using a ground plane

layout to minimise board parasitics.

recommended, although this can be increased

without limit to improve load transient

performance. Higher values of output capacitor

will also reduce output noise. Capacitors with

ESR less than 0.5V are recommended for best

results.

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

S70-5 Package outline

␣

Dim.

Millimeters

Inches

Dim.

Millimeters

Min. Max.

2.10 BSC

Inches

Max. Max.

Min.

Max.

1.10

0.10

1.00

0.30

0.25

Min.

0.0315 0.0433

0.0039

0.0315 0.0039

0.006 0.0118

Max.

0.80

0.0826 BSC

0.0492 BSC

0.0255 BSC

0.0511 BSC

1.25 BSC

0.65 BSC

1.30 BSC

0.80

0.15

0.08

0.0031 0.0098

0.0787 BSC

0.26

0°

0.46

8°

0.010

0°

0.018

8°

2.00 BSC

␣

Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

SOT23-5 Package outline

DIM

Millimeters

Inches

Max.

Min.

Max.

1.45

0.15

1.30

0.50

0.26

3.10

3.20

1.80

Min.

0.0354

0.00

0.0354

0.0078

0.0035

0.1062

0.0866

0.0511

a°

0.90

0.00

0.90

0.20

0.09

2.70

2.20

1.30

0.0570

0.0059

0.0511

0.0196

0.0102

0.1220

0.1181

0.0708

0.0374 REF

0.0748 REF

0.0236

30°

0.95 REF

1.90 REF

0.10

0°

0.60

30°

0.0039

0°

Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Intentionally left blank

Issue 8 - October 2007

www.zetex.com

ZXCL SERIES

Definitions

Product change

Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or

service. Customers are solely responsible for obtaining the latest relevant information before placing orders.

Applications disclaimer

The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for

the user’s application and meets with the user’s requirements. No representation or warranty is given and no liability whatsoever is

assumed by Zetex with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights

arising from such use or otherwise. Zetex does not assume any legal responsibility or will not be held legally liable (whether in contract,

tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business, contract,

opportunity or consequential loss in the use of these circuit applications, under any circumstances.

Life support

Zetex products are specifically not authorized for use as critical components in life support devices or systems without the express written

approval of the Chief Executive Officer of Zetex Semiconductors plc. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labelling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to

cause the failure of the life support device or to affect its safety or effectiveness.

Reproduction

The product specifications contained in this publication are issued to provide outline information only which (unless agreed by the

company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a

representation relating to the products or services concerned.

Terms and Conditions

All products are sold subjects to Zetex’ terms and conditions of sale, and this disclaimer (save in the event of a conflict between the two

when the terms of the contract shall prevail) according to region, supplied at the time of order acknowledgement.

For the latest information on technology, delivery terms and conditions and prices, please contact your nearest Zetex sales office.

Quality of product

Zetex is an ISO 9001 and TS16949 certified semiconductor manufacturer.

To ensure quality of service and products we strongly advise the purchase of parts directly from Zetex Semiconductors or one of our

regionally authorized distributors. For a complete listing of authorized distributors please visit: www.zetex.com/salesnetwork

Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased through unauthorized sales channels.

ESD (Electrostatic discharge)

Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting devices.

The possible damage to devices depends on the circumstances of the handling and transporting, and the nature of the device. The extent

of damage can vary from immediate functional or parametric malfunction to degradation of function or performance in use over time.

Devices suspected of being affected should be replaced.

Green compliance

Zetex Semiconductors is committed to environmental excellence in all aspects of its operations which includes meeting or exceeding

regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to

reduce the use of hazardous substances and/or emissions.

All Zetex components are compliant with the RoHS directive, and through this it is supporting its customers in their compliance with

WEEE and ELV directives.

Product status key:

“Preview”

“Active”

Future device intended for production at some point. Samples may be available

Product status recommended for new designs

“Last time buy (LTB)”

Device will be discontinued and last time buy period and delivery is in effect

“Not recommended for new designs” Device is still in production to support existing designs and production

“Obsolete”

Production has been discontinued

Datasheet status key:

“Draft version”

This term denotes a very early datasheet version and contains highly provisional information, which

may change in any manner without notice.

“Provisional version”

“Issue”

This term denotes a pre-release datasheet. It provides a clear indication of anticipated performance.

However, changes to the test conditions and specifications may occur, at any time and without notice.

This term denotes an issued datasheet containing finalized specifications. However, changes to

specifications may occur, at any time and without notice.

Zetex sales offices

Europe

Americas

Asia Pacific

Corporate Headquarters

Zetex GmbH

Kustermann-park

Balanstraße 59

D-81541 München

Germany

Zetex Inc

Zetex (Asia Ltd)

Zetex Semiconductors plc

Zetex Technology Park, Chadderton

Oldham, OL9 9LL

700 Veterans Memorial Highway

Hauppauge, NY 11788

USA

3701-04 Metroplaza Tower 1

Hing Fong Road, Kwai Fong

Hong Kong

United Kingdom

Telefon: (49) 89 45 49 49 0

Fax: (49) 89 45 49 49 49

europe.sales@zetex.com

Telephone: (1) 631 360 2222

Fax: (1) 631 360 8222

usa.sales@zetex.com

Telephone: (852) 26100 611

Fax: (852) 24250 494

asia.sales@zetex.com

Telephone: (44) 161 622 4444

Fax: (44) 161 622 4446

hq@zetex.com

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ZXCL280H5TA产品参数

型号:	ZXCL280H5TA
是否Rohs认证：	符合
生命周期：	Transferred
IHS 制造商：	ZETEX PLC
包装说明：	SC-70, 5 PIN
Reach Compliance Code：	unknown
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	5.13
Is Samacsys：	N
最大回动电压 1：	0.28 V
最大输入电压：	5.5 V
最小输入电压：	3.3 V
JESD-30 代码：	R-PDSO-G5
JESD-609代码：	e3
长度：	2 mm
湿度敏感等级：	1
功能数量：	1
端子数量：	5
最大输出电压 1：	2.884 V
最小输出电压 1：	2.716 V
标称输出电压 1：	2.8 V
封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：	1.1 mm
表面贴装：	YES
技术：	CMOS
端子面层：	Matte Tin (Sn)
端子形式：	GULL WING
端子节距：	0.65 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	40
宽度：	1.25 mm
Base Number Matches：	1

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