29V High Voltage LED Driver
SP7601 29V High Voltage LED Driver
FEATURES Wide Input Voltage Range 4.5V – 29V 1.2MHz Constant Frequency Operation...
Description
SP7601 29V High Voltage LED Driver
FEATURES Wide Input Voltage Range 4.5V – 29V 1.2MHz Constant Frequency Operation Low 0.2V Reference Voltage Adjustable Overcurrent Protection PWM Dimming and Power sequencing Control www.DataSheet4U.com RoHS Compliant, Lead Free Packaging: Small 6-Pin TSOT Package DESCRIPTION The SP7601 is a high current DC to DC Switching Buck LED Driver that features low component count and high efficiency due to a very low 0.2V reference voltage. High 1.2MHz switching frequency allows use of very small external components. The SP7601 is compatible with PWM dimming up to a frequency of 1kHz at 10% Duty Cycle. TYPICAL APPLICATION CIRCUIT
M1 L1
VIN
Cin 1 Vin
Vo / LED +
up to 29V
2 Gate 6 LX D1 Rs
LED1
GND
C1 0.1uF 3
SP7601 LEDn
VDR GND D2 5 Dimming and Power sequencing FB 4 Rf b Rset
Sept25-07 Rev D
SP7601 29V High Voltage LED Driver Page 1
© 2007 Exar Corporation
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only, and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Input Voltage….................................................-0.3V to 30V Lx………………………………………………….…-2V to 30V FB……………..................................................-0.3V to 5.5V Storage Temperature..…………….…..……-65 °C to 150 °C Junction Temperature.................
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