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产品型号SC4215ISTRT的概述

芯片SC4215ISTRT概述 SC4215ISTRT是一款由中国知名半导体公司推出的数字信号处理芯片，广泛应用于音频处理、信号复原和数字信号转换等领域。该芯片集成了丰富的功能与接口，并通过高效的设计来实现出色的性能表现。随着多媒体应用需求的逐渐提升，SC4215ISTRT因其较高的集成度和灵活的应用特性，逐渐成为业界的热门选择。芯片SC4215ISTRT的详细参数 SC4215ISTRT的主要技术参数包括： - 工作电压：3.3V至5V，支持的电源范围使得该芯片能够广泛应用于各种电子设备中。 - 处理频率：最高可达48kHz，这一频率能够满足大多数音频处理需求，同时也能支持简单的信号处理任务。 - 输入/输出接口：提供多种数字接口，并可兼容主流的通信协议，例如I2C和SPI，使其在与其他设备连接时灵活多样。 - 信号处理精度：内置多个高精度的ADC和DAC模块，能够实现24位音频处...

产品型号SC4215ISTRT的Datasheet PDF文件预览

SC4215

Very Low Input /Very Low Dropout

2 Amp Regulator With Enable

POWER MANAGEMENT

Description

Features

The SC4215 is a high performance positive voltage Input Voltage as low as 1.6V

regulator designed for use in applications requiring very

low Input voltage and very low dropout voltage at up to

2 amperes. It operates with a Vin as low as 1.6V, with out-

put voltage programmable as low as 0.8V. The SC4215

features ultra low dropout, ideal for applications where Vout

is very close to Vin. Additionally, the SC4215 has an

enable pin to further reduce power dissipation while shut

down. The SC4215 provides excellent regulation over varia-

tions in line, load and temperature.

500mV dropout @ 2A

Adjustable output from 0.8V

Over current and over temperature protection

Enable pin

10µA quiescent current in shutdown

Full industrial temperature range

Available in SOIC-8EDP Lead- free package, fully

WEEE and RoHS compliant

Applications

The SC4215 is available in the SOIC-8EDP (Exposed Die

Pad) package. The output voltage can be set via an

external divider or to fixed settings of 0.8V and 2.5V de-

pending on how the ADJ pin is configured.

Telecom/Networking cards

Motherboards/Peripheral cards

Industrial Applications

Wireless infrastructure

Set top boxes

Medical equipment

Notebook computers

Battery powered systems

Typical Application Circuits

SC4215

VIN

ADJ

ENABLE

0.8 (R1 + R2)

Volts

GND

SC4215

VIN

VO = 0.8V

VIN

ENABLE

VO = 2.5V

ENABLE

ADJ

GND

Revision: March 22, 2006

www.semtech.com

SC4215

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in

the Electrical Characteristics section is not implied.

Parameter

Symbol

Max

Units

Vin, EN, Vo, ADJ to GND

Power Dissipation

P_D

Internally Limited

Thermal Resistance Junction to Ambient

SOIC-8EDP⁽¹⁾

°C/W

θ_JA

Thermal Resistance Junction to Case

SOIC-8EDP⁽¹⁾

θ_JC

T_A

5.5

-40 to +85

-40 to +125

-65 to +150

300

°C/W

°C

Operating Ambient Temperature Range

Operating Junction Temperature Range

Storage Temperature Range

T_J

°C

T_STG

T_LEAD

V_ESD

°C

Lead Temperature (Soldering) 10 Sec.

°C

ESD Rating (Human Body Model)

Note: (1) 2 square inch of FR-4, double sided, 1 oz. minimum copper weight.

Electrical Characteristics

Unless specified: V = V_IN. V = 1.6V to 5.5V, V_O= V_IN-0.5V, and I_O= 10µA to 2A.

Values in bold appl^Ey^Nover the^INfull operating temperature range.

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

VIN

Supply Voltage Range

Quiescent Current

V_IN

I_Q

1.6

5.5

1.75

V_IN= 3.3V

0.75

µA

V_IN= 5.5V, V_EN= 0V

Output Voltage⁽¹⁾

(Fixed Voltage, V_ADJ= 0)

Line Regulation⁽¹⁾

Load Regulation⁽¹⁾

Dropout Voltage⁽¹⁾⁽²⁾

V_O

V_IN= V_O+ 0.5V, I_O= 10mA

Full I_OUTand V_INrange

I_O= 10mA

-2%

V_O

+2%

+3%

0.4

-3%

REG_(LINE)

REG_(LOAD)

V_D

0.2

0.5

%/V

I_O= 10mA to 2A

I_O= 1A

1.0

300

400

500

I_O= 1.5A

200

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: V = V_IN. V = 1.6V to 5.5V, V_O= V_IN-0.5V, and I_O= 10µA to 2A.

Values in bold appl^Ey^Nover the^INfull operating temperature range.

Parameter

VO (Cont.)

Symbol

Test Conditions

Min

2.2

Typ

Max

Units

I_O= 2A, V_IN= V_O+ 0.5V

I_O= 2A, V_IN= V_O+ 0.6V

V_IN= V_O+ 0.5V

300

500

600

Dropout Voltage⁽¹⁾⁽²⁾

Minimum Load Current⁽³⁾

Current Limit

I_O

µA

I_CL

4.5

ADJ

Reference Voltage⁽¹⁾

V_REF

V_IN= 3.3V, V_ADJ= V_OUT, I_O= 10mA

V_ADJ= V_REF

0.792

0.8

0.808

0.816

200

0.784

Adjust Pin Current⁽⁴⁾

Adjust Pin Threshold⁽⁵⁾

I_ADJ

V_TH(ADJ)

0.05

1.6

0.16

0.40

Enable Pin Current

Enable Pin Threshold

I_EN

V_IH

V_IL

V_EN= 0V, V_IN= 3.3V

V_IN= 3.3V

1.5

µA

V_IN= 3.3V

0.4

Over Temperature Protection

High Trip level

T_HI

T_HYST

160

°C

Hysteresis

Notes:

(1) Low duty cycle pulse testing with Kelvin connections required.

(2) Defined as the input to output differential at which the output voltage drops to 1.5% below the value

measured at a differential of 0.8V.

(3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this

requirement. Adjustable versions only.

(4) Guaranteed by design.

(5) When V_ADJexceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the error

amplifier and connects V_ADJinstead.

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Ordering Information

Part Number

SC4215ISTR⁽¹⁾

SC4215ISTRT⁽¹⁾⁽²⁾

SC4215EVB

Package

Temp. Range (T_J)

SOIC-8EDP

-40 to +125^OC

Evaluation Board

Notes:

(1) Only available in tape and reel packaging. A reel

contains 2500 devices for the SOIC-8EDP package.

(2) Lead-free product. This product is fully WEEE and

RoHS compliant.

Pin Configuration

Top View

Bottom View

GND

ADJ

VIN

GND

ADJ

VIN

Exposed

Die Pad

SOIC-8EDP

Pin Descriptions

Pin # Pin Name Pin Desciption

Enable Input. Pulling this pin below 0.4V turns the regulator off, reducing the quiescent current to a

fraction of its operating value. The device will be enabled if this pin is left open. Connect to VIN if not

being used.

VIN

Input voltage. For regulation at full load, the input to this pin must be between (VO+ 0.5V) and 5.5V.

Minimum VIN = 1.6V. A large bulk capacitance should be placed closely to this pin to ensure that the

input supply does not sag below 1.6V. Also a minimum of 4.7uF ceramic capacitor should be placed

directly at this pin.

The pin is the power output of the device. A minimum of 10uF capacitor should be placed directly at

this pin.

ADJ

When this pin is grounded, an internal resistor divider sets the output voltage to 2.5V. If connected

to the Vo pin, the output voltage will be set at 0.8V. If external feedback resistors are used, the output

voltage will be (See Application Circuits on page 1):

0.8 (R1 + R2)

Volts

GND

Reference ground. The GND pin and the exposed die pad must be connected together at the IC pin.

No Connection.

1,4,5

THERMAL Pad for heatsinking purposes. Connect to ground plane using multiple vias. Not electrically connected

PAD internally.

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Block Diagram

1.5uA

Marking Information

SC4215I

xxxxxxx

yyww

Top View

yyww = Datecode (Example: 0015)

xxxxxxx = Semtech Lot No. (Example: 00101)

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Typical Characteristics

Region of Instability

Stable Region

Region of Instability

Stable Region

Region of Instability

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Applications Information

Enable: Pulling this pin below 0.4V turns the regulator off,

reducing the quiescent current to a fraction of its operat-

ing value. A pull up resistor up to 400kOhms should be

connected from this pin to the VIN pin in application where

supply voltages of Vin < 1.9V is required. For applications

with higher voltages than 1.9V, EN pin could be left open

or connected to VIN.

Introduction

The SC4215 is intended for applications where high cur-

rent capability and very low dropout voltage are required.

It provides a very simple, low cost solution that uses very

little pcb real estate. Additional features include an en-

able pin to allow for a very low power consumption standby

mode, and a fully adjustable output.

Thermal Considerations

Component Selection

The power dissipation in the SC4215 is approximately equal

to the product of the output current and the input to out-

put voltage differential:

Input capacitor: A minimum of 4.7µF ceramic capacitor is

recommended to be placed directly next to the Vin pin.

This allows for the device being some

distance from any bulk capacitance on the rail.

Additionally, bulk capacitance of about ≥ 10µF/A (output

load) may be added closely to the input supply pin of the

SC4215 to ensure that Vin does not sag, improving load

transient response.

P_D

≈

VIN − VOUT • I_O

( )

The absolute worst-case dissipation is given by:

P_D(MAX

(

VIN _(MAX− VOUT

)

• I_O(MAX+ VIN _(MAX• I_{Q (MAX}

(MIN ) ) ) )

)

Output capacitor: A minimum bulk capacitance of

≥ 10µF/A (output load), along with a 0.1µF ceramic de-

coupling capacitor is recommended. Increasing the bulk

capacitance will improve the overall transient response.

The use of multiple lower value ceramic capacitors in par-

allel to achieve the desired bulk capacitance will not cause

stability issues. Although designed for use with ceramic

output capacitors, the SC4215 is extremely tolerant of out-

put capacitor ESR values and thus will also work comfort-

ably with tantalum output capacitors.

For a typical scenario, V_IN= 3.3V ± 5%, V_OUT= 2.8V and

I_O= 1.5A, therefore:

V_IN(MAX)= 3.465V, V_OUT(MIN)= 2.744V and I_Q(MAX)= 1.75mA,

Thus P_D(MAX)= 1.09W.

Using this figure, and assuming T_A(MAX)= 70°C, we can cal-

culate the maximum thermal impedance allowable to main-

tain T_J≤ 150°C:

Noise immunity: In very electrically noisy environments, it

is recommended that 0.1µF ceramic capacitors be placed

from IN to GND and OUT to GND as close to the device pins

as possible.

− T_{A(MAX )}

P_{D(MAX )}

(

)

(

)

150 − 70

1.09

J(MAX )

R_{TH(J− A)(MAX )}

= 73.4° C / W

This should be achievable for the SOIC-8EDP package us-

ing pcb copper area to aid in conducting the heat away,

such as one square inch of copper connected to the ex-

posed die pad of the device. Internal ground/power planes

and air flow will also assist in removing heat. For higher

ambient temperatures it may be necessary to use addi-

tional copper area.

Internal voltage selection: By connecting the ADJ pin to

GND, an internal resistor divider will regulate the output

voltage to 2.5V. If the ADJ pin is connected directly to the

VO pin, the output voltage will be regulated to the 0.8V

internal reference.

External voltage selection resistors: the use of 1%

resistors, and designing for a current flow ≥ 10µA is

recommended to ensure a well regulated output

(thus R2 ≤ 50kΩ).

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Outline Drawing - SOIC-8EDP

DIMENSIONS

INCHES MILLIMETERS

DIM

MIN NOM MAX MIN NOM MAX

2X E/2

.053

.069 1.35

.005 0.00

.065 1.25

.020 0.31

.010 0.17

1.75

0.13

1.65

0.51

0.25

A1 .000

A2 .049

.012

.007

.189 .193 .197 4.80 4.90 5.00

.150 .154 .157 3.80 3.90 4.00

ccc C

.236 BSC

.050 BSC

6.00 BSC

1.27 BSC

2X N/2 TIPS

e/2

.086 .090 .094 2.19 2.29 2.39

.010

.020 0.25

0.50

.016 .028 .041 0.40 0.72 1.04

(.041)

(1.05)

aaa C

aaa

0°

8°

0°

8°

.004

.010

.008

0.10

0.25

0.20

SEATING

bbb

ccc

PLANE

bxN

bbb

C A-B D

EXPOSED PAD

GAGE

PLANE

0.25

(L1)

^DETAILA

^{SEE DETAIL}A

SIDE VIEW

NOTES:

1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).

2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H-

3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS

OR GATE BURRS.

4. REFERENCE JEDEC STD MS-012, VARIATION BA.

Land Pattern - SOIC-8EDP

SOLDER MASK

DIM

DIMENSIONS

INCHES

(.205)

.098

MILLIMETERS

(5.20)

2.49

5.10

2.44

3.00

1.27

0.60

2.20

7.40

(C)

.201

.096

.118

.050

.024

THERMAL VIA

Ø 0.36mm

.087

.291

NOTES:

1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.

CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR

COMPANY'S MANUFACTURING GUIDELINES ARE MET.

REFERENCE IPC-SM-782A, RLP NO. 300A.

THERMAL VIAS IN THE LAND PATTERN OF THE EXPOSED PAD

SHALL BE CONNECTED TO A SYSTEM GROUND PLANE.

FAILURE TO DO SO MAY COMPROMISE THE THERMAL AND/OR

FUNCTIONAL PERFORMANCE OF THE DEVICE.

2006 Semtech Corp.

www.semtech.com

SC4215

POWER MANAGEMENT

Contact Information

Semtech Corporation

Power Management Products Division

200 Flynn Road, Camarillo, CA 93012

Phone: (805)498-2111 FAX (805)498-3804

2006 Semtech Corp.

www.semtech.com

SC4215ISTRT相关文章

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SC4215ISTRT产品参数

型号:	SC4215ISTRT
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Not Recommended
零件包装代码：	SOIC
包装说明：	HSOP, SOP8,.25
针数：	8
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
Factory Lead Time：	8 weeks
风险等级：	7.09
可调性：	FIXED/ADJUSTABLE
最大回动电压 1：	0.6 V
标称回动电压 1：	0.3 V
最大绝对输入电压：	6 V
JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3
长度：	4.9 mm
最大电网调整率：	0.025%
最大电网调整率 (%/V)：	0.43
最大负载调整率：	0.025%
最大负载调整率 (%)：	1%
湿度敏感等级：	1
功能数量：	1
输出次数：	1
端子数量：	8
工作温度TJ-Max：	125 °C
工作温度TJ-Min：	-40 °C
最大输出电流 1：	2 A
最大输出电压 1：	3.3 V
最小输出电压 1：	0.8 V
标称输出电压 1：	0.8 V
封装主体材料：	PLASTIC/EPOXY
封装代码：	HSOP
封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG
包装方法：	TAPE AND REEL
峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified
调节器类型：	FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：	1.75 mm
子类别：	Other Regulators
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：	1.27 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
最大电压容差：	2%
宽度：	3.9 mm
Base Number Matches：	1

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产品型号SC4215ISTRT的概述

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