GM9130HV Datasheet, PDF (1/9 Pages) Gamma Microelectronics Inc. – 3A LED Driver with Dimming Control

GM9130HV
3A LED Driver with Dimming Control
Description
Features
GM9130HV is the monolithic IC designed for a ‹
step-down DC/DC converter capable of driving
3A load without an additional transistor. The
‹
input voltage range is up to 60V. Its feedback
‹
voltage, VFB, is 200mV. The GM9130HV
operates at a switching frequency of 52kHz. The
‹
external shutdown function is controlled by a
‹
logic level on the ON/OFF pin and then the circuit
comes into the standby mode with I_STBY~50μA
‹
(typ.).
The ON/OFF pin may be used for the analog
‹
dimming. As the voltage on the ON/OFF pin is
increased from 0.07V to 0.67V, the voltage on
the FB pin falls from 200mV to 0.
Maximum input voltage up to 60V
V_FB: 200mV
Frequency: 52KHz
I_LED = 3.0A maximum
ON/OFF input may be used for the analog
dimming
Thermal protection
Cycle by cycle current limit
The self-protection features include a cycle-by-
cycle current limit and a thermal protection.
The GM9130HV is available in standard TO220-
5, and TO263-5 packages.
Besides, SOP8 with heat sink and TO252-5
packages are also available. However, these
packages are limited to heat dissipation and the
ILED is suggested below 2A.
Typical Application Circuits
V_IN up to 60V
C_IN1
470μF
GM9130HV
1 _VIN
5 _ON/OFF
C_IN2
0.10μF
SW ²
FB ⁴
L1
100μH
C_OUT
470μF
R_LOAD
Figure 1. Application for GM9130HV
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