GM7130HV Datasheet, PDF (1/9 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 ‹ 3.3V, 5V, 12V and Adjustable output
active function for a step-down (buck) switching
versions
regulator, and drives a maximum load current as
high as 3A line and load regulations.
GM7130HV is available in fixed output voltages
‹
Adjustable version output voltage range
1.23V to 57V
of 3.3V, 5V, 12V and a versatile Adjustable
output version.
‹ V_OUT accuracy is up to ±2% under
specified input voltage the output load
These regulators are simple to use and require
conditions
minimum number of external components. The ‹ Input voltage range up to 60V
features include internal frequency compensation
and a fixed-frequency oscillator.
‹
Requires only 4 external components with
High efficiency
The GM7130HV is high-efficiency replacements
for popular three-terminal linear regulators, and is
‹
requiring a smaller heat sink or even no need
TTL shutdown capability, low power
standby mode
heat sink.
‹ Built-in thermal shutdown, current limit
GM7130HV performs well with standard
protection
inductors from most of manufacturers, and
‹ Uses standard inductors
simplifying the design of switch-mode power
supplies. External shutdown is included with 80
‹ 52 kHz fixed frequency internal oscillator
µA (typical) standby current. The output switch
has cycle-by-cycle current limiting as well as
Preliminary ^{thermal shutdown for full protection under fault}
conditions.
GM7130HV operates at a switching frequency of
52 kHz which allowing smaller size filter
Information ^{components than what would be neededwith}
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 – 40V
Unregulated
DC Input
C_IN
100µF
GM7130HV-5.0
1 V_IN
Feedback ⁴
Output 5
GND
3
ON/OFF
5
L1
100µH
D1
1N5822
5V
regulated
output,
C_OUT
680µF
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