APW7134 Datasheet, PDF (1/16 Pages) Kingbright Corporation – Dual 1.5MHz, 600mA Synchronous Step-Down Converter

APW7134
Dual 1.5MHz, 600mA Synchronous Step-Down Converter
Features
• 600mA Output Current on Each Channel
• 2.5V to 5.5V Input Voltage Range
• 1.5MHz Constant Frequency Operation
• Low Dropout Operation at 100% Duty Cycle
• Synchronous Topology
• 0.6V Low Reference Voltage
• Typically 0.1 µA Shutdown Current
• Current Mode Operation
• Over Temperature Protection
• Over Current Protection
• Up to 94% Efficiency
• Internally Compensated
• Lead Free Available (RoHS Compliant)
Applications
• TV Tuner/Box
• Portable Instrument
General Description
The APW7134 contains two independent 1.5MHz con-
stant frequency, current mode, PWM step-down
converters. Each converter integrates a main switch
and a synchronous rectifier for high efficiency without
an external Schottky diode. The APW7134 is ideal for
powering portable equipment that runs from a single
cell Lithium-Ion (Li+) battery. Each converter can sup-
ply 600mA of load current from a 2.5V to 5.5V input
voltage. The output voltage can be regulated as low as
0.6V. The APW7134 can also run at 100% duty cycle
for low dropout applications.
Pinouts
EN1 ¹
FB1 2
IN2 3
GND2 4
SW2 ₅
APW7134 (Top View)
DFN-10 (3mm x 3mm)
10 SW1
9 GND1
8 _IN1
7 FB2
6 EN2
Exposed pad
on backside
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.1 - Aug., 2006
www.anpec.com.tw