IMP IMP1233DZ-15T, IMP1233DZ-10T, IMP1233DZ-5T Datasheet

2000 © IMP, Inc. 408-432-9100/www.impweb.com 1

IMP1

IMP1

233D

233D

POWER MANAGEMENT

Key Features

Applications

◆ Set-top boxes

◆ Cellular phones

◆ PDAs

◆ Energy management systems

◆ Embedded control systems

◆ Printers

◆ Single board computers

◆

Improved Dallas DS1233D replacement
— Over 60% lower maximum supply current

◆

Low Supply Current
— 20µA maximum (5.5V)
— 15µA maximum (3.6V)

◆

Automatically restarts a microprocessor after
power failure

◆

350ms reset delay after VCCreturns to an
in-tolerance condition

◆

Active LOW power-up reset, 5kΩ internal pull-up

◆

Precision temperature-compensated voltage
reference and comparator

◆

Eliminates external components

◆

Motorola 68xxx and HC16 compatible

◆

Compact surface mount SOT-223 package

◆

Operating temperature –40°C to +85°C

Block Diagram

Lo

Lo

w P

w Poowwerer

, 5V

, 5V µµ

P R

P R

eset

eset

– A

– A

ctiv

ctiv

e L

e LOOWW

, Open-Dr

, Open-Dr

ain Output

ain Output

– 350ms R

– 350ms R

eset P

eset Perer

iod

iod

The IMP1233D supply voltage monitor is an improved, low-power
replacement for the Dallas Semiconductor DS1233D. Maximum supply
current over temperature is a low 20µA, representing over 60 percent
lower power as compared to the DS1233D.

The IMP1233D issues 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. Tolerance level options are 5-,
10- and 15-percent. 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

returns to an in-tolerance condition, the reset signal
remains active for 350ms to allow the power supply and system micro­processor to stabilize.

The IMP1233D is designed with a open-drain output stage and operates
over the extended industrial temperature range. Devices are available in
compact surface mount SOT-223 packages.

Other low power products in this family include the IMP1810/11/12/15/
16/17 and IMP1233M.

Typical Application

IMP1233D

Microprocessor

RESET

RESET

1233D_02.eps

V

CC

GND

traP

egatloVTESER

)V(

emiTTESER

)sm(

tuptuO

egatS

TESER

ytiraloP

0181PMI021.4,073.4,026.4051lluP-hsuPWOL
1181PMI031.4,053.4,026.4051niarD-nepOWOL
2181PMI031.4,053.4,026.4051lluP-hsuPHGIH
5181PMI055.2,088.2,060.3051lluP-hsuPWOL
6181PMI055.2,088.2,060.3051niarD-nepOWOL
7181PMI055.2,088.2,060.3051lluP-hsuPHGIH

D3321PMI521.4,573.4,526.4053niarD-nepOWOL
M3321PMI027.2,573.4,526.4053niarD-nepOWOL

Family Selection Guide

V

CC

Supply

Tolerance

Bias

+

Reference

–

IMP1233D

Delay

350ms Typical

GND

5.0k

W

RESET

1233D_01.eps

Pin Configuration

IMP1

IMP1

233D

233D

2 408-432-9100/www.impweb.com 2000 © IMP, Inc.

!

Pin Descriptions

Package Marking Code

Ordering Information

SOT-223

1233D_05a.eps

1

24

3

A

B

C

D

egakcaP

edoCretteL

traP
epyT

egakcaP

edoCretteL

teseR

ecnareloT

ABC D

33D D3321PMIA%5

B%01
C%51

yrammuSeciveD gnikraMegakcaP

**traP

rebmuN

TESER

tuptuO

egatloV

)V(

TESER

ecnareloT

)%(

TESER
emiT
)sm(

egatStuptuO

322-TOS
egakcaP

TESER

ytiraloPABC

D

*

niarD-nepOlluP-hsuP

%5=A

%01=B
%51=C

T/5-ZD3321PMI526.45053

""

WOL33DA

T/01-ZD3321PMI573.401053

""

WOL33DB

T/51-ZD3321PMI521.451053

""

WOL33DC

k5lanretnI* Ω .pulluprotsiser

.leeRdnaepaTsetacidniT/**

spe.30t_D3321

srebmuNniP

emaNnoitcnuF

322-TOS29-OT

11 DNGdnuorG
22 TESERtuptuoteserWOLevitcA
33V

CC

tupniylppusrewoP

4 — DNG)ylnO322-TOS(dnuorG

RESET

GND

2

IMP1233D-X

4

V

3

CC

1

GND

1233D_03.eps