AME7730 Datasheet, PDF (1/12 Pages) Analog Microelectronics – 100mA Regulated Charge Pump

AME, Inc.
AME7730
100mA Regulated Charge Pump
n General Description
The AME7730 is a charge pump voltage doublers that
delivers a regulated output. No external inductor is re-
quired for operation. Using three small capacitors, the
AME7730 can deliver up to 100mA to the voltage regu-
lated output. The AME7730 features very low output ripple
and high efficiency over a large portion of its load range
making this device ideal for battery-powered applications.
Furthermore, the combination of few external components
and small package size keeps the total converter board
area to a minimum in space restricted applications.
The AME7730 contains a thermal management circuit
to protect the device under continuous output short cir-
cuit conditions.
The AME7730 is available in SOT-26 / TSOT-26 pack-
age and is rated from -40^OC to 85^OC.
n Features
l Input Voltage Range: 2.7V to 5V
l Accurate to with ±4%
l Output Current: 100mA with V >= 3.0V
IN
50mA with V >= 2.7V
IN
l 1MHz Switching Frequency
l Shutdown Mode < 1µA
l Short Circuit Protection
l Over Temperature Protection
l All AME's Lead Free Product Meet RoHS
Standards
n Functional Block Diagram
C-
V_IN
φ2
C+
φ1
φ1
φ1 φ2
EN
Control
φ2
EA
V_OUT
GND
n Typical Application
C_FLY = 1µF
3.0V to 5V
V_IN
C+
V_OUT
AME
V_IN 7730 ^GND
5V / 100mA
V_OUT
C_OUT=10µF
C_IN=10µF
C-
EN
ON OFF
n Applications
l Cellular Phones
l Digital Cameras
l PDAs LCD displays
l LED / Display Back Light Driver
l LEDs for Comera Flash
Rev.A.01
1