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AP1703EWG-7

3-PIN MICROPROCESSOR RESET CIRCUITS

Diodes Incorporated. 

AP1701/2/3/4

3-PIN MICROPROCESSOR RESET CIRCUITS

Features

• Precision Monitoring of +2.5V, +3V, +3.3V, and +5V

Power-Supply Voltages

• Fully Specified Over Temperature

• Available in three Output Configurations

• Push-Pull RESET Low Output (AP1701/3)

• Push-Pull RESET High Output (AP1702/4)

• 200ms Min. Power-On Reset Pulse Width

• 20µA Supply Current (Typ.)

• Guaranteed Reset Valid to VCC = +1V

• Power Supply Transient Immunity

• No External Components

• Green Package: SC59-3L

• Lead Free Finish / RoHS Compliant (Note1)

General Description

The AP1701/2/3/4 are used for microprocessor (µP) supervisory

circuits to monitor the power supplies in µP and digital systems.

They provide excellent circuit reliability and low cost by

eliminating external components and adjustments when used

with +5V, +3.3V, +3.0V powered circuits.

These circuits perform a single function: they assert a reset

signal whenever the VCC supply voltage declines below a preset

threshold, keeping it asserted for at least 240ms after VCC has

risen above the reset threshold. Reset thresholds suitable for

operation with a variety of supply voltages are available. The

AP1701/2/3/4 have push pull outputs. The AP1701/3 have an

active low RESET output, while the AP1702/4 has an active

high RESET output. The reset comparator is designed to ignore

fast transients on VCC, and the outputs are guaranteed to be in

the correct logic state for VCC down to 1V. Low supply current

makes the AP1701/2/3/4 ideal for use in portable equipment. The

AP1701/2/3/4 is available in a 3-pin SC59 package.

Applications

• Computers

• Controllers

• Intelligent Instruments

• Critical µP and µC Power Monitoring

• Portable/Battery Powered Equipment

• Automotive

Ordering Information

AP170X X X X X

Enable

1 : Active-Low

2 : Active-High

3 : Active-Low

4 : Active-High

Voltage

A : 4.63

B : 4.38

C : 4.00

D : 3.08

E : 2.93

F : 2.63

G : 2.25

Package

W : SC59

Lead Free

L : Lead Free

G : Green

Packing

-7 : Taping

Notes: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Device

Package Packaging

Code (Note 2)

AP170XXW

W

SC59

7” Tape and Reel

Quantity

Part Number Suffix

3000/Tape & Reel

-7

Notes: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

AP1701/2/3/4 Rev. 2

1 of 9

www.diodes.com

FEBRUARY 2007

© Diodes Incorporated

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