Datasheet Maxim MAX25600 — 数据表

EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX25600 Synchronous High-Voltage Four-Switch
Buck-Boost LED Controller General Description The MAX25600 is a synchronous 4-switch buck-boost
LED driver controller. The controller regulates the LED
current for LED string voltages from 0V to 60V. The
MAX25600 can be used as a seamless buck-boost LED
driver for applications that require an efficient buck-boost
LED driver with synchronous rectification. The MAX25600
is ideal for high-power applications that require a current
source with PWM dimming capability.
The device provides seamless transition between buck,
boost, and buck-boost modes depending on the ratio of
input to output voltage. The MAX25600 is ideal for LED
driver applications in automotive, industrial, and other
LED lighting applications. A fault flag indicates open LED,
shorted LED, or thermal shutdown conditions. The device
uses Maxim's proprietary average-current-mode control
scheme and allows adjustable 200kHz to 700kHz fixedfrequency operation. In addition, ±6% triangular spread
spectrum is added internally to the oscillator to improve
EMI performance. The MAX25600 provides both analog
and digital PWM dimming, and has built-in analog PWM
dimming at a dimming frequency of 200Hz. The adjustable soft-start feature limits the current peaks and voltage overshoots at startup. The MAX25600 integrates a
high-side p-channel dimming MOSFET driver for PWM
dimming applications that require fast rising and falling edges of the LED current. It also features robust …