GM7130HV_13 Datasheet, PDF (1/10 Pages) Gamma Microelectronics Inc. – 3A STEP DOWN VOLTAGE SWITCHING REGULATORS

GM7130HV
3A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Description
Features
GM7130HV series is designed to provide all the 
active function for a step-down (buck) switching
regulator, and drives a maximum load current as
high as 3A line and load regulations.

GM7130HV is available in fixed output voltages
of 3.3V, 5V, 12V and a versatile Adjustable

output version.
These regulators are simple to use and require
minimum number of external components. The 
features include internal frequency compensation
and a fixed-frequency oscillator.

The GM7130HV is high-efficiency replacements
for popular three-terminal linear regulators, and is

requiring a smaller heat sink or even no need
heat sink.

GM7130HV performs well with standard
inductors from most of manufacturers, and

simplifying the design of switch-mode power
supplies. External shutdown is included with 80

µA (typical) standby current. The output switch
has cycle-by-cycle current limiting as well as
thermal shutdown for full protection under fault
conditions.
3.3V, 5V, 12V and Adjustable output
versions
Adjustable version output voltage range
1.23V to 57V
V_OUT accuracy is up to ±2% under
specified input voltage the output load
conditions
Input voltage range up to 60V
Requires only 4 external components with
High efficiency
TTL shutdown capability, low power
standby mode
Built-in thermal shutdown, current limit
protection
Uses standard inductors
52 kHz fixed frequency internal oscillator
GM7130HV operates at a switching frequency of
52 kHz which allowing smaller size filter
components than what would be needed with
lower frequency switching regulators.
GM7130HV series are available in a standard 5-
lead TO-220, TO220B and TO263 packages.
Application
Pre-regulator for linear regulators
High-efficiency step-down buck regulator
On-card/board switching regulators
Positive to negative converter (buck-boost)
Typical Application Circuits
7V – 60V
Unregulated
DC Input
CIN
100μF
GM7130HV-5.0
1 V_IN
Feedback ⁴
Output 2
GND
3
ON/OFF
5
L1
100μH
D1
1N5822
5V
regulated
output,
COUT
680μF
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