A4003C 3CH Power Management IC

The A4003C is a 3CH power management IC
for applications powered by one Li-Ion battery
or a DC 5V adapter. It integrates three
synchronous buck converters and can provide
high efficiency output at light load and heavy
load operation. The internal compensation
architecture simplifies the application circuit
design. Besides, the independent enable
control makes the designer have the greatest
flexibility to optimize timing for power
sequencing purposes. The A4003C is
available in a 20 pin QFN 3x3 package.

FEATURES
 2.7V to 5.5V Input Voltage Range
 Three Buck Converters
Output Voltage Range: 0.6V to Vin
CH1,CH2, CH3 Continuous Load
Current / Peak Current: 1A, 1A, 1A / 1.2A,
1.5A, 1.2A
(3CH total output power consumption
must be less than 6W)
180° Phases Shifted Architecture
Fixed 1.5MHz Switching Frequency
100% Duty Cycle Low Dropout
Operation
<1uA Shutdown Current
Independent Enable Control
Internal Compensation
Cycle-by-Cycle Current Limit
Short Circuit Protection
 Auto Recovery OTP Protection
 Available in 20-pin 3mm x 3mm QFN
Package


APPLICATION
Smart Phone
 IP Camera
 Digital Camera
 

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