G5U2596M Datasheet, PDF (1/6 Pages) GTM CORPORATION – 150 KHz, 3A PWM Step-Down DC/DC Converter

ISSUED DATE :2005/12/26
REVISED DATE :2006/05/17C
G5U2596M
150 KHz, 3A PWM Step-Down DC/DC Converter
Description
The G5U2596M series of regulators are monolithic integrated circuit that provides all active functions for a step-down (buck) switching
regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3v, 5v,
12v and an adjustable output version. The G5U2596M series operate at a switching frequency of 150 kHz; thus allowing smaller sized filter
components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-263 surface mount
package. Other feature include a guaranteed ̈́4% to tolerance on output voltage under specified input voltages and output load conditions.
The 150 kHz ̈́15% is on the oscillator frequency. External shutdown is included, featuring 80uA (Typ.) standby current. The output switch
includes cycle-by cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
Features
Ô¦3.3V, 5.0V, 12V and adjustable output versions
Ô¦Guaranteed 3A output current
Ô¦Operating voltage can be up to 22V
Ô¦150kHz fixed frequency internal oscillator
Ô¦Built-in TTL On/Off control
Ô¦TTL Shutdown Capability
Ô¦Uses readily available standard inductors
Ô¦Thermal shutdown and current limit protection
Applications
Ô¦High-efficiency step-down regulator
Ô¦One-ch switching regulators simple
Ô¦Positive to negative converter
Package Dimensions
Block Diagram
REF.
A
b
L4
c
L1
E
Millimeter
Min. Max.
REF.
4.40 4.80 c2
0.66 0.91 L2
0.00 0.30 B D
0.36 0.5
e
2.29 2.79 L
9.80 10.4
Millimeter
Min. Max.
1.25 1.45
1.27 REF.
8.6 9.0
1.70 REF.
14.6 15.8
0˚
8˚
G5U2596M
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