AME

7

AME1300

300mA CMOS LDO with

RESET Function

Rev.C.02

The AME1300 is a combination of a fixed output, low

drop-out regulator and microprocessor monitor. Unlike

bipolar regulators, the AME1300 supply current does not

increase with load current. In addition,V

and within regulation at very low load currents(an impor-

tant consideration in RTC and CMOS RAM battery back-

up applications) as well as with any type of capacitor (see

below). AME1300 pin functions are detailed below:

n Detailed Description

RESETB

RESETB

V

DET

V

DET

IN

NC

EN

GND

BYP

CBypass

(Option)

470pF

OUT

+

EN Control

(from Power

Control Logic)

C1

2.2

µF

Battery

C1

1

µF

1300

n Pin Description

Pin Number

Pin Name

Pin Description

1

RESETB

2

OUT

Regulated Voltage Output.

3

GND

Ground Terminal.

4

BYP

Reference Bypass Input.

Connecting a 1000pF to this input further reduces output noise.

5

EN

Shutdown Control Input. The regulator is fully enabled when a logic

high is applied to this input. The regulator enters shutdown when a

logic low is applied to this input. During shutdown, regulator output

voltage falls to zero, RESETB output remains valid and supply

current is reduced to 10

µA (typ.)

6

NC

No connect.

7

IN

Power Supply Input.

8