ACE2596
150KHz 3A Buck DC-DC Converter
Description
The ACE2596 series of regulators are fixed frequency PWM buck (step-down) DC/DC converter,
capable of driving a 3A load with excellent line and load regulation. These regulators include internal
frequency compensation and a fixed frequency oscillator so that they are easy to use. A system adopting
ACE2596 requires a minimum number of external components to work.
A standard series of inductors, optimized for use with the ACE2596 series, are available from several
manufacturers. This feature greatly simplifies the design of switch-mode power supplies.
These ICs are available in TO-263-5 packages.
Features
3.3V, 5V, 12V Fixed(±4% Tolerance) and Adjustable (±3% Tolerance) Output Versions
Guaranteed 3A Output Load Current
150kHz Fixed Frequency Internal Oscillator
Input Voltage Range up to 32V
Requires only 4 external components
High Efficiency up to 90%
Excellent Line and Load Regulation
TTL Shutdown Capability
Low Power Standby Mode, I
Q
Typically 80μA
Built-in Current Limit Protection and Thermal Shutdown Circuit
Application
LCD Monitor and LCD TV
On-Card DC-DC Converter
DVD Recorder
PDP
Absolute Maximum Ratings
Parameter
Input voltage
ON/OFF Pin Voltage
Feedback Pin Voltage
Operating Junction Temperature
Thermal Resistance (Junction to Ambient, No Heatsink) TO-263-5
Lead Temperature (Soldering, 10sec)
Storage Temperature Range
Symbol
V
IN
V
ON/OFF
V
FB
T
J
R
θJA
T
LEAD
T
STG
Max
40
40
40
150
60
260
-65 to150
O
Unit
V
V
V
O
C
C/W
O
C
C
O
Note : Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These
are stress ratings only, and functional operation of the device ate these or any other conditions beyond those indicated under
“Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect
device reliability.
VER 1.3
1
ACE [ ACE TECHNOLOGY CO., LTD. ]
