Datasheet Analog Devices LT3932-1 — Даташит

LT3932/LT3932-1
36V, 2A Synchronous
Step-Down LED Driver
FEATURES DESCRIPTION ±1.5% LED Current Regulation
nn ±1.2% Output Voltage Regulation
nn 5000:1/10000+:1 PWM Dimming at 100Hz
(LT3932/LT3932-1)
nn 128:1 Internal PWM Dimming
nn Spread-Spectrum Frequency Modulation
nn Silent Switcher® Architecture for Low EMI
nn 3.6V to 36V Input Voltage Range
nn 0V to 36V LED String Voltage
nn 200kHz to 2MHz with SYNC Function
nn 99.9% Maximum Duty Cycle
nn 20:1 Analog or Duty Cycle LED Current Control
nn Open/Short LED Protection and Fault Indication
nn Accurate LED Current Sense with Monitor Output
nn Programmable UVLO
nn Thermally Enhanced 28-Pin (4mm × 5mm) QFN The LT®3932 , featuring the Silent Switcher®architecture
to minimize EMI/EMC emissions, utilizes fixed-frequency,
peak current control and provides PWM dimming for a
string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. An
output voltage limit can be set with a resistor divider to …