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A4001 4 Channel DC/DC Converters IC with High-Efficiency Step-Down

The A4001 is a 4-CH power management IC
for applications powered by one Li-Ion battery
or a DC 5V adapter. It integrates four
synchronous buck regulators 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 A4001 is available
in a 24 pin QFN 4x4 package.

FEATURES
 2.7V to 5.5V Input Voltage Range
 Four Buck Converters
Output Voltage Range: 0.6V to Vin
Maximum Continuous Load Current:2A
Maximum Peak Load Current:4A (4CH
total output power consumption must
be less than 10W)
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
 Each Channel Efficiency Up to 95%
 Auto Recovery OTP Protection
 Available in 24-pin 4mm x 4mm QFN
Package
APPLICATION
 IP Camera
 DVR
 Video door bell