ASM1810R-10F [PULSECORE]

Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, PLASTIC, SOT-23, 3 PIN;


型号：	ASM1810R-10F
厂家：	PulseCore Semiconductor
描述：	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, PLASTIC, SOT-23, 3 PIN 光电二极管
文件：	总9页 (文件大小：235K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ASM1810

February 2005

rev 1.4

Low Power, 5V µP Reset

- Active LOW, Push-Pull Output

General Description

Key Features

The ASM1810 is a voltage supervisor with low-power, 5V µP

active LOW Reset, Push-Pull output. Maximum supply current

over temperature is a low 20µA.

•

Low Supply Current

•20 µA maximum (5.5 V)

•

Automatically restarts a microprocessor after power failure

150ms reset delay after V_CCreturns to an in-tolerance con-

The ASM1810 generates an active LOW reset signal whenever

the monitored supply is out of tolerance. A precision reference

and comparator circuit monitor power supply (V_CC) level.

dition

•

Active LOW power-up reset

Precision temperature-compensated voltage reference and

comparator

Tolerance level options are 5%, 10% and 15%. When an out-of-

tolerance condition is detected, an internal power-fail signal is

generated which forces an active LOW reset signal. After V_CC

•

Eliminates external components

Low cost TO-92 and compact surface mount SOT-23 pack-

age

returns to an in-tolerance condition, the reset signal remains

active for 150ms to allow the power supply and system

microprocessor to stabilize.

•

Push-Pull output for minimum current drain

Operating temperature -40°C to +85°C

Applications

The ASM1810 is designed with a push-pull output stage and

operates over the extended industrial temperature range.

Devices are available in low cost TO-92 and compact surface

mount SOT-23 packages.

•

Set-top boxes

Cellular phones

PDAs

Energy management systems

Embedded control systems

Printers

Other low power products in this family include the ASM1811/

12/15/16/17, ASM1233D and ASM1233M.

Single board computers

Block Diagram

Typical Operating Circuit

V_CC

ASM1810

Supply

Tolerance

Bias

ASM1810

Delay

150ms

Typical

Microprocessor

RESET

Reference

GND

Alliance Semiconductor

2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

Pin Configuration

TO-92

SOT-23

ASM1810

RESET

ASM1810-R

GND

V_CC

Pin Description

SOT-23

TO-92

Pin Name

Description

Pin #

RESET

V_CC

Active LOW reset output

Power supply input

Ground

GND

2 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

Application Information

Operation - Power Monitor

t_R

The ASM1810 detects out-of-tolerance power supply

conditions. It resets a processor during power-up, power-down

and issues a reset to the system processor when the monitored

power supply voltage is below the reset threshold. When an

out-of-tolerance V_CCvoltage is detected, the RESET signal is

V_CCTP(MAX)

V_CCTP

V_CCTP(MIN)

asserted. On power-up, RESET is kept active (LOW) for

approximately 150ms after the power supply voltage has

reached the selected tolerance. This allows the power supply

and microprocessor to stabilize before RESET is released.

RPU

V_CC

ASM1810

RESET

Figure 2: Timing Diagram: Power-Up

Microprocessor

RESET

100kΩ

Figure 1: RESET Valid to 0V V

t_F

V_CC

V_CCTP(MAX)

V_CCTP

V_CCTP(MIN)

Output Conditions

The ASM1810 active LOW reset signal is valid as long as V_CC

remains above 1.2V. However the RESET output on the

ASM1810 uses a push-pull drive stage that can maintain a valid

output below 1.2V. To sink current with V_CCbelow 1.2V, a

RESET

RPD

resistor can be connected from the reset pin (RESET) to

Ground (see Figure 1). This configuration will give a valid value

on the RESET output with V_CCapproaching 0V. During both

power up and down, this configuration will draw current when

the RESET is in the high state. A value of 100kΩ should be

adequate to maintain a valid connection.

Figure 3: Timing Diagram: Power-Down

3 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

Absolute Maximum Ratings

Parameter

Min

Max

Unit

Voltage on V_CC

-0.5

-40

_CC+ 0.5

Voltage on RESET

Operating Temperature Range

Soldering Temperature (for 10 sec)

Storage Temperature

°C

260

125

-55

ESD rating

HBM

200

NOTE: These are stress ratings only and functional use is not implied. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability.

Electrical Characteristics

Unless otherwise noted VCC = 1.25V to 5.5V and specifications are over the operating temperature range of -40⁰c to +85⁰c. All voltages are referenced to ground

Parameter

Supply voltage

Symbol

V_CC

Conditions

Min

Typ

Max Unit

1.2

5.5

V_OH

I_OUT< 500 µA

V_CC- 0.5V

V_CC- 0.1V

350

Output voltage

Output Current

Operating Current

I_OH

Output = 2.4V, V_CC> 2.7V

Output = 0.4V, V_CC> 2.7V

V_CC< 5.5V, RESET output open

µA

I_OL

+10

I_CC

4.75

4.49

4.24

V_CCTrip Point (ASM1810R-5)

V_CCTP

C_OUT

t_RPD

4.50

4.25

4.00

4.62

4.37

4.12

V_CCTrip Point (ASM1810R-10)

V_CCTrip Point (ASM1810R-15)

Output Capacitance

µs

V_CCDetect to RESET Low

V_CCSlew Rate

t_F

300

µs

(V_CCTP(MAX) to V_CCTP(MIN)

V_CCSlew Rate

t_R

(V_CCTP(MIN) to V_CCTP(MAX)

V_CCDetect to RESET High

t_RPU

t_r= 5µs

100

150

300

Note: The t value is for reference in defining values for t

and should not be considered for proper operation or use.

RPD

4 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

Family Selection Guide

RESET Time

(ms)

Part #

RESET Voltage (V)

Output Stage

RESET Polarity

ASM1810

ASM1811

ASM1812

ASM1815

ASM1816

ASM1817

ASM1233D

ASM1233M

4.620, 4.370, 4.120

4.620, 4.350, 4.130

3.060, 2.880, 2.550

4.625, 4.375, 4.125

4.625, 4.375, 2.720

150

350

Push-Pull

Open-Drain

Push-Pull

LOW

HIGH

LOW

HIGH

LOW

Push-Pull

Open-Drain

Push-Pull

Open-Drain

5 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

Package Dimension

Plastic SOT-23 (3-Pin)

Inches

Millimeters

Min Max

Min

Max

Plastic SOT-23 (3-Pin)

0.030

0.002

0.012

0.003

0.110

0.047

0.046

0.006

0.020

0.008

0.120

0.055

0.75

0.05

0.30

0.08

2.80

1.20

1.17

0.15

0.50

0.20

3.04

1.40

0.037 BSC

0.075 BSC

0.083

0.95 BSC

1.9 BSC

0.104

0.024

2.10

0.40

2.64

0.60

0.016

0^o

8^o

0^o

8^o

6 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

To-92 (3-Pin)

Dimensions in Inches

Dimensions in Millimeters

Min

Max

Min

Max

TO-92

0.175

0.016

0.014

0.175

0.138

0.098

0.045

0.168

0.500

0.095

0.185

0.020

0.016

0.185

0.144

0.102

0.055

0.174

0.585

0.099

4.445

0.406

0.356

4.445

3.505

2.489

1.143

4.269

12.7

4.699

0.508

0.406

4.699

3.658

2.591

1.397

4.420

14.86

2.515

φD

2.413

7 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

February 2005

rev 1.4

Ordering Information

Device Summary

RESET

Output

Voltage (V)

Push-Pull

Output

Stage

RESET

Tolerance (%)

RESET

Time (ms)

SOT-23

Package

RESET

Polarity

Part ** Number

Package Marking

TIN - LEAD DEVICES

ASM1810R-5

4.62

4.37

4.12

150

LOW

RALL

RBLL

RCLL

ASM1810R-10

ASM1810R-15

LEAD FREE DEVICES

ASM1810R-5F

4.62

4.37

4.12

150

LOW

KALL

KBLL

KCLL

ASM1810R-10F

ASM1810R-15F

RESET

Output

Voltage (V)

Push-Pull

Output

Stage

RESET

Tolerance (%)

RESET

Time (ms)

TO-92

Package

RESET

Polarity

Part ** Number

Package Marking

TIN - LEAD DEVICES

ASM1810-5

ASM1810-10

4.62

4.37

4.12

150

LOW

ASM1810-5

ASM1810-10

ASM1810-15

LEAD FREE DEVICES

ASM1810-5F

4.62

4.37

4.12

150

LOW

ASM1810-5F

ASM1810-10F

ASM1810-15F

ASM1810-10F

ASM1810-15F

** Add /T to Part Number for Tape and Reel (i.e ASM18xx-x/T)

LL - Lot Code

8 of 9

Low Power, 5V µP Reset

Notice: The information in this document is subject to change without notice

ASM1810

Part Number: ASM1810

Document Version: 1.4

Alliance Semiconductor Corporation

2575, Augustine Drive,

Santa Clara, CA 95054

Tel: 408 - 855 - 4900

Fax: 408 - 855 - 4999

www.alsc.com

registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the

right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may

appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the

right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these

specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and

users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. Alliance does not assume any responsibility

or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale

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parties. Alliance does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may

reasonably be expected to result in significant injury to the user, and the inclusion of Alliance products in such life-supporting systems implies that

the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use.

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