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芯片ADM6326-29ARTZ-R7的概述 ADM6326-29ARTZ-R7是一款由ADI（Analog Devices Inc.）公司设计和生产的高性能电源管理芯片，广泛用于各种电子设备中，特别是在需要高效电源控制与管理的领域，如工业自动化、消费电子、通信设备及医疗仪器等。该芯片具备多种功能，包括稳压、开关电源控制，以及积分电流和电压监测等，是一种集成度高、功能强大的解决方案。芯片的设计致力于提供稳定的电源输出，并且具备多重保护功能，以确保被供电设备的安全和稳定运行。其高效的能量转换效率使其适用于要求严格的环境和应用。芯片ADM6326-29ARTZ-R7的详细参数 ADM6326-29ARTZ-R7的技术参数如下： - 工作电压范围：3.0V至15V - 输入电压范围：3V至18V - 输出电压精度：±1% - 最大输出电流：500mA - 最大功率损耗：1.5W - 效率...

产品型号ADM6326-29ARTZ-R7的Datasheet PDF文件预览

Ultralow Power, 3-Lead, SOT-23

Microprocessor Reset Circuits

ADM6326/ADM6328/ADM6346/ADM6348

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

Ultralow supply current of 1 μA maximum (ADM6326/ADM6328)

Accurate monitoring of 2.5 V, 3 V, 3.3 V, and 5 V rails

Reset thresholds available in increments from 2.2 V to 4.63 V

Glitch immunity from negative-going V_CCtransients

2 reset output options

ADM6326/ADM6346

RESET

GENERATOR

(100ms)

RESET

REF

RESET

Push-pull

Open-drain

(ADM6326/ADM6346)

RESET

(ADM6328/ADM6348)

GND

Minimum reset timeout of 100 ms

Operating temperature range of −40°C to +85°C

3-lead SOT-23 package

Figure 1.

ADM6328/ADM6348

APPLICATIONS

RESET

GENERATOR

(100ms)

RESET

Telecommunications

REF

Microprocessor systems

Desktop and notebook computers

Portable equipment

GND

Figure 2.

GENERAL DESCRIPTION

The ADM6326/ADM6328/ADM6346/ADM6348 devices provide

low cost solutions for protecting sensitive circuitry, such as micro-

processor and telecommunications circuitry.

microprocessor in a reset state until conditions have stabilized.

The reset output remains operational with V_CCas low as 1 V.

The ADM6326 and ADM6346 have an active low push-pull reset

output. The ADM6328 and ADM6348 have an active low open-

drain reset output, which requires an external pull-up resistor.

The ADM6326 and ADM6328 offer a choice of ten reset thresholds

in increments between 2.2 V and 3.08 V, whereas the ADM6346

and ADM6348 offer a choice of 14 reset thresholds between 3.3 V

and 4.63 V.

With built-in glitch immunity, ultralow supply currents, and

24 reset threshold voltage options, the ADM6326/ADM6328/

ADM6346/ADM6348 not only ensure that systems are immune

to fast transients on V_CC, but also that the devices are suitable

for monitoring a variety of supply voltages in low power,

portable equipment.

These devices provide a reset output during power-up, power-

down, and brownout conditions. On power-up, an internal

These devices are available in a 3-lead SOT-23 package and

operate over the extended temperature range of −40°C to +85°C.

RESET

timer holds

asserted for at least 100 ms. This holds the

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

ADM6326/ADM6328/ADM6346/ADM6348

TABLE OF CONTENTS

Features .............................................................................................. 1

Pin Configuration and Function Descriptions..............................5

Typical Performance Characteristics ..............................................6

Theory of Operation .........................................................................7

Reset Output ..................................................................................7

Interfacing to Other Devices .......................................................7

Transient Immunity ......................................................................7

Outline Dimensions..........................................................................8

Ordering Guide .............................................................................9

Applications....................................................................................... 1

Functional Block Diagrams............................................................. 1

General Description......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 4

Thermal Resistance ...................................................................... 4

ESD Caution.................................................................................. 4

REVISION HISTORY

9/09—Revision 0: Initial Version

Rev. 0 | Page 2 of 12

ADM6326/ADM6328/ADM6346/ADM6348

SPECIFICATIONS

T_A= −40°C to +85°C, unless otherwise noted. Typical values are at T_A= 25°C and V_CC= 3 V. Overtemperature limits are guaranteed by design.

Table 1.

Parameter

Min

Typ

Max

5.5

Unit

Test Conditions/Comments

OPERATING VOLTAGE RANGE, V_CC

INPUT CURRENT, I_CC

1.0

0.5

1.0

μA

ADM6326/ADM6328 only, V_CC= 3.0 V for V_TH

2.93 V, V_CC= 3.2 V for V_TH> 2.93 V, no load

≤

1.75

μA

V_CC= 5.5 V, no load

RESET THRESHOLD

Threshold Voltage, V_TH(See Table 2)

V_TH− 2.5%

V_TH− 1.5%

V_TH

V_TH+ 2.5%

V_TH+ 1.5%

T_A= 25°C

Temperature Coefficient

Hysteresis

ppm/°C

ADM6326/ADM6328

ADM6346/ADM6348

TIMING CHARACTERISTICS

6.3

9.5

V_CCto Reset Delay (t_RD

)

μs

V_CC= V_THto (V_TH− 100 mV)

Reset Active Timeout Period (t_RP)

100

185

280

0.3

0.4

_CC> 2.1 V, I_SINK= 1.6 mA, reset asserted

_CC≥ 1.2 V, I_SINK= 100 ꢀA, reset asserted

RESET

OUTPUT VOLTAGE LOW, V_OL

OUTPUT VOLTAGE HIGH, V_OH

0.8 × V_CC

ADM6326 only, V_CC= 3.2 V, I_SOURCE= 500 μA

RESET

ADM6326/ADM6346 only, V_CC= 4.5 V,

_SOURCE= 800 μA, V_TH≤ 4.38 V

ADM6326/ADM6346 only, V_CC= V_TH(MAX)

_SOURCE= 800 μA, V_TH≥ 4.5 V

0.8 × V_CC

RESET

0.1

μA

OPEN-DRAIN

OUTPUT LEAKAGE CURRENT

Table 2. Reset Threshold Voltage

_A= −40°C to +85°C

Max

T_A= 25°C

Typ

Parameter

Unit

Min

Max

Min

RESET THRESHOLD VOLTAGE (V_TH)

ADM632x-22

ADM632x-23

ADM632x-24

ADM632x-25

ADM632x-26

ADM632x-27

ADM632x-28

ADM632x-29

ADM632x-30

ADM632x-31

ADM634x-33

ADM634x-34

ADM634x-35

ADM634x-36

ADM634x-37

ADM634x-38

ADM634x-39

ADM634x-40

ADM634x-41

ADM634x-42

ADM634x-43

ADM634x-44

ADM634x-45

ADM634x-46

2.167

2.285

2.364

2.462

2.591

2.66

2.2

2.233

2.355

2.436

2.537

2.669

2.741

2.842

2.974

3.045

3.126

3.35

2.145

2.262

2.34

2.25

2.32

2.4

2.375

2.46

2.5

2.437

2.564

2.633

2.73

2.562

2.696

2.768

2.87

2.63

2.7

2.758

2.886

2.955

3.034

3.25

2.8

2.93

3.00

3.08

3.3

2.857

2.925

3.003

3.217

3.315

3.412

3.51

3.0

3.075

3.15

3.383

3.485

3.587

3.69

3.349

3.447

3.546

3.644

3.743

3.841

3.94

3.4

3.451

3.552

3.654

3.755

3.857

3.958

4.06

3.5

3.6

3.7

3.607

3.705

3.802

3.9

3.792

3.895

3.997

4.1

3.8

3.9

4.0

4.038

4.137

4.235

4.314

4.432

4.56

4.1

4.161

4.263

4.364

4.446

4.567

4.699

3.997

4.095

4.192

4.27

4.202

4.305

4.407

4.489

4.612

4.746

4.2

4.3

4.38

4.5

4.387

4.514

4.63

Rev. 0 | Page 3 of 12

ADM6326/ADM6328/ADM6346/ADM6348

ABSOLUTE MAXIMUM RATINGS

THERMAL RESISTANCE

Table 3.

θ_JAis specified for the worst-case conditions, that is, a device

soldered in a circuit board for surface-mount packages.

Parameter

Rating

Supply Voltage, V_CC

Input Current, I_CC

Output Voltage

−0.3 V to +6 V

20 mA

Table 4. Thermal Resistance

Package Type

θ_JA

Unit

RESET

−0.3 V to (V_CC+ 0.3 V)

−0.3 V to +6 V

20 mA

Push-Pull

3-Lead SOT-23

270

°C/W

RESET

Open-Drain

Output Current (

)

ESD CAUTION

Rate of Rise of V_CC

Temperature

Storage

Operating

Soldering (10 sec)

100 V/μs

−65°C to +155°C

−40°C to +85°C

300°C

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

Rev. 0 | Page 4 of 12

ADM6326/ADM6328/ADM6346/ADM6348

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

ADM6326/

ADM6328/

ADM6346/

ADM6348

GND

TOP VIEW

(Not to Scale)

RESET

Figure 3. ADM6326/ADM6328/ADM6346/ADM6348 Pin Configuration

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Description

GND

RESET

Ground Reference for All Signals; 0 V.

Active Low Logic Output. This pin is low when V_CCis less than the reset threshold; it remains low for 185 ms

(typical) after V_CCbecomes greater than the reset threshold.

V_CC

Supply Voltage Being Monitored.

Rev. 0 | Page 5 of 12

ADM6326/ADM6328/ADM6346/ADM6348

TYPICAL PERFORMANCE CHARACTERISTICS

1.0

280

260

240

220

200

180

160

140

120

100

0.9

= 5V

= 3.3V

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

= 1.4V

–40

–20

–40

–20

TEMPERATURE (°C)

Figure 4. Supply Current vs. Temperature

Figure 6. Power-Up Reset Timeout vs. Temperature

800

250

200

150

100

700

600

500

400

300

200

100

= 10mV

= 20mV

–20

= 200mV

= 100mV

–40

100

1000

RESET THRESHOLD OVERDRIVE, V – V (mV)

TEMPERATURE (°C)

TH CC

Figure 7. Power-Down Reset Delay vs. Temperature

Figure 5. Maximum Transient Duration vs. Reset Threshold Overdrive

Rev. 0 | Page 6 of 12

ADM6326/ADM6328/ADM6346/ADM6348

THEORY OF OPERATION

INTERFACING TO OTHER DEVICES

The ADM6326/ADM6328/ADM6346/ADM6348 are designed

to protect the integrity of a system’s operation by ensuring the

proper operation of the system during power-up, power-down,

and brownout conditions. Ultralow supply currents make these

devices particularly suitable for use in low power, portable

equipment.

The active low, open-drain reset output of the ADM6328 and

ADM6348 makes these devices ideal for integration with devices

such as microprocessors with bidirectional reset pins. Simply

RESET

connect the

output of the ADM6328 or ADM6348 to

RESET

the

input of the microprocessor using a single pull-up

resistor to allow either device to initiate a system reset (see

Figure 8).

RESET OUTPUT

The ADM6326 and ADM6346 have an active low, push-pull

reset output, whereas the ADM6328 and ADM6348 have an

active low, open-drain reset output, which requires an external

pull-up resistor. The

V_CCdown to 1 V.

PULL-UP

RESET

signal is guaranteed to be valid for

MICROPROCESSOR

SYSTEM

ADM6328/ADM6348

RESET

INPUT

When the ADM6326/ADM6328/ADM6346/ADM6348 are

RESET

equal to the

RESET

GND

powered up, the

RESET

output remains low for a period typically

active timeout period of 185 ms. This feature

allows adequate time for the system to power up correctly and

for the power supply to stabilize before any devices are brought out

of reset and are allowed to begin executing instructions. Initializing

a system in this way provides a more reliable startup for micro-

processor systems.

Figure 8. Interfacing to a Microprocessor with a Bidirectional Reset Pin

TRANSIENT IMMUNITY

To avoid unnecessary resets caused by fast power supply transients,

the ADM6326/ADM6328/ADM6346/ADM6348 provide glitch

immunity from negative-going V_CCtransients.

When the monitored voltage falls below its associated threshold

RESET

(V_TH),

is asserted within 20 μs (typical). Asserting

Figure 5 shows the

comparator overdrive (that is, the

this quickly means that the entire system can be reset at once

before any part of the system’s voltage falls below its recommended

operating voltage. This system reset can avoid dangerous and/or

erroneous operation of a microprocessor based system.

maximum magnitude of negative-going pulses with respect to

the typical threshold) vs. the pulse duration without a reset.

t_RP

t_RD

RESET

Figure 9.

Timing

Rev. 0 | Page 7 of 12

ADM6326/ADM6328/ADM6346/ADM6348

OUTLINE DIMENSIONS

3.04

2.90

2.80

1.40

1.30

1.20

2.64

2.10

0.60

0.45

1.03

0.89

2.05

1.78

1.02

0.54

REF

0.95

0.88

GAUGE

PLANE

1.12

0.89

0.100

0.013

0.180

0.085

0.51

0.37

SEATING

PLANE

0.25

0.60 MAX

0.30 MIN

COMPLIANT TO JEDEC STANDARDS TO-236-AB

Figure 10. 3-Lead Small Outline Transistor Package [SOT-23-3]

(RT-3)

Dimensions shown in millimeters

Rev. 0 | Page 8 of 12

ADM6326/ADM6328/ADM6346/ADM6348

ORDERING GUIDE

RESET

Structure

Typical Threshold

Voltage (T_A= 25°C)

Output

Model¹

Package Description

3-Lead SOT-23

Package Option Branding

ADM6326-22ARTZ-R7^{2, 3}

ADM6326-23ARTZ-R7²

ADM6326-24ARTZ-R7²

ADM6326-25ARTZ-R7²

ADM6326-26ARTZ-R7²

ADM6326-27ARTZ-R7²

ADM6326-28ARTZ-R7²

ADM6326-29ARTZ-R7²

ADM6326-30ARTZ-R7²

ADM6326-31ARTZ-R7²

ADM6328-22ARTZ-R7²

ADM6328-23ARTZ-R7²

ADM6328-24ARTZ-R7²

ADM6328-25ARTZ-R7²

ADM6328-26ARTZ-R7²

ADM6328-27ARTZ-R7²

ADM6328-28ARTZ-R7^{2, 3}

ADM6328-29ARTZ-R7²

ADM6328-30ARTZ-R7²

ADM6328-31ARTZ-R7²

ADM6346-33ARTZ-R7^{2, 3}

ADM6346-34ARTZ-R7²

ADM6346-35ARTZ-R7²

ADM6346-36ARTZ-R7²

ADM6346-37ARTZ-R7²

ADM6346-38ARTZ-R7²

ADM6346-39ARTZ-R7²

ADM6346-40ARTZ-R7²

ADM6346-41ARTZ-R7²

ADM6346-42ARTZ-R7²

ADM6346-43ARTZ-R7²

ADM6346-44ARTZ-R7²

ADM6346-45ARTZ-R7²

ADM6346-46ARTZ-R7²

ADM6348-33ARTZ-R7²

ADM6348-34ARTZ-R7²

ADM6348-35ARTZ-R7²

ADM6348-36ARTZ-R7²

ADM6348-37ARTZ-R7²

ADM6348-38ARTZ-R7²

ADM6348-39ARTZ-R7²

ADM6348-40ARTZ-R7²

ADM6348-41ARTZ-R7²

ADM6348-42ARTZ-R7²

ADM6348-43ARTZ-R7²

ADM6348-44ARTZ-R7²

ADM6348-45ARTZ-R7²

ADM6348-46ARTZ-R7^{2, 3}

2.2 V

2.32 V

2.4 V

2.5 V

2.63 V

2.7 V

2.8 V

2.93 V

3.0 V

3.08 V

2.2 V

2.32 V

2.4 V

2.5 V

2.63 V

2.7 V

2.8 V

2.93 V

3.0 V

3.08 V

3.3 V

3.4 V

3.5 V

3.6 V

3.7 V

3.8 V

3.9 V

3.0 V

4.1 V

4.2 V

4.3 V

4.38 V

4.5 V

4.63 V

3.3 V

3.4 V

3.5 V

3.6 V

3.7 V

3.8 V

3.9 V

3.0 V

4.1 V

4.2 V

4.3 V

4.38 V

4.5 V

4.63 V

Push-Pull

RT-3

LAQ

LAR

LAS

LAT

LAU

LAV

LAW

LAX

LAY

LAZ

LB0

LB1

LB2

LB3

LB4

LB5

LB6

LB7

LB8

LB9

LBA

LBC

LBD

LBE

LBF

LBG

LBH

LCN

LCP

LCQ

LCR

LCS

LCT

LCU

LCV

LCW

LCX

LCY

LCZ

LD0

LD1

LD2

LD3

LD4

LD5

LD6

LD7

LD8

Push-Pull

Open-Drain

Push-Pull

Open-Drain

¹Contact sales for the availability of nonstandard models.

²Z = RoHS Compliant Part.

³Standard model.

Rev. 0 | Page 9 of 12

ADM6326/ADM6328/ADM6346/ADM6348

NOTES

Rev. 0 | Page 10 of 12

ADM6326/ADM6328/ADM6346/ADM6348

NOTES

Rev. 0 | Page 11 of 12

ADM6326/ADM6328/ADM6346/ADM6348

NOTES

registered trademarks are the property of their respective owners.

D08052-0-9/09(0)

Rev. 0 | Page 12 of 12

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ADM6326-29ARTZ-R7产品参数

型号:	ADM6326-29ARTZ-R7
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
零件包装代码：	SOT-23
包装说明：	ROHS COMPLIANT, TO-236AB, SOT-23, 3 PIN
针数：	3
Reach Compliance Code：	unknown
风险等级：	5.31
其他特性：	RESET THRESHOLD VOLTAGE IS 2.93 V
可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	R-PDSO-G3
JESD-609代码：	e3
长度：	2.9 mm
湿度敏感等级：	1
信道数量：	1
功能数量：	1
端子数量：	3
最高工作温度：	85 °C
最低工作温度：	-40 °C
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
座面最大高度：	1.12 mm
最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	1 V
标称供电电压 (Vsup)：	3 V
表面贴装：	YES
温度等级：	INDUSTRIAL
端子面层：	MATTE TIN
端子形式：	GULL WING
端子节距：	0.96 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	40
宽度：	1.3 mm
Base Number Matches：	1

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