AiT Semiconductor Inc.
www.ait-ic.com
A7545
DC-DC CONVERTER/BOOST (STEP-UP)
LOW-NOISE 4.5A STEP-UP CURRENT MODE PWM CONVERTER
REV1.0 - JUN 2014 RELEASED - - 1 -
DESCRIPTION
FEATURES
The A7545 is a current mode boost DC-DC
converter. It is PWM circuitry with built-in 0.05Ω
power MOSFET make this regulator highly power
efficient. The internal compensation network also
minimizes as much as 6 external component counts.
The non-inverting input of error amplifier connects to
a 0.6V precision reference voltage and internal
soft-start function can reduce the inrush current.
The A7545 is available in PSOP8 package.
ORDERING INFORMATION
Package Type
Part Number
PSOP8
MP8
Note
V: Halogen free Package
R: Tape & Reel
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
Adjustable Output up to 9V
Internal Fixed PWM frequency: 1MHz
Precision Feedback Reference Voltage: 0.6V (±2%)
Internal 0.05Ω, 4.5A, 12V Power MOSFET
Shutdown Current: 0.1μA
Over Temperature Protection
Over Voltage Protection
Adjustable Over Current Protection: 0.5A ~ 4.5A
Available in PSOP8 Package
APPLICATION
Chargers
LCD Displays
Digital Cameras
Handheld Devices
Portable Products
TYPICAL APPLICATION
Figure 1. Basic Application Circuit with A7545
AiT Semiconductor Inc.
www.ait-ic.com
A7545
DC-DC CONVERTER/BOOST (STEP-UP)
LOW-NOISE 4.5A STEP-UP CURRENT MODE PWM CONVERTER
REV1.0 - JUN 2014 RELEASED - - 2 -
PIN DESCRIPTION
Top View
Pin #
Symbol
Function
1
PGND
IC Ground.
2
OC
Adjustable Current Limit (Floating Available).
3
V
IN
IC Power Supply.
4
EN
Enable Control (Active High).
5
GND
IC Ground.
6
FB
Error Amplifier Inverting Input.
7
NC
Not Connected.
8
LX
Power Switch Output.