AME, Inc.
AME1300
300mA CMOS LDO with RESET Function
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Detailed Description
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
OUT
remains stable
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:
RESET
RESET
V
DET
V
DET
C1
2.2µF
V
OUT
V
IN
C1
1µF
Battery
GND
1300
+
NC
Bypass
EN
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Pin Description
Pin #
1
2
3
4
CBypass
(Option)
470pF
EN Control
(from Power
Control Logic)
Pin Name
RESET
V
OUT
GND
Bypass
Pin Description
RESET output remains low while V
DET
is below the reset voltage
threshold, and for 300msec V
DET
rises above reset theshold.
Regulated Voltage Output.
Ground Terminal.
Reference Bypass Input. Connecting a 1000pF to this input further
reduces output noise.
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, RESET output remains valid and supply current
is reduced to 10
µ
A (typ.)
No connect.
Power Supply Input.
Detected input Voltage. V
DET
and V
OUT
can be connected together.
5
EN
6
7
8
NC
V
IN
V
DET
6
AME [ ANALOG MICROELECTRONICS ]
