Datasheet Analog Devices LT3756-1 — Даташит

LT3756/LT3756-1/LT3756-2
100VIN, 100VOUT
LED Controller
FEATURES DESCRIPTION 3000:1 True Color PWM™ Dimming
Wide Input Voltage Range: 6V to 100V
Output Voltage Up to 100V
Constant-Current and Constant-Voltage Regulation
100mV High Side Current Sense
Drives LEDs in Boost, Buck Mode, Buck-Boost Mode,
SEPIC or Flyback Topology
n Adjustable Frequency: 100kHz to 1MHz
n Open LED Protectio Programmable Undervoltage Lockout with Hysteresis
n Improved Open LED Status Pin (LT3756-2)
n Frequency Synchronization (LT3756-1)
n PWM Disconnect Switch Driver
n CTRL Pin Provides Analog Dimming
n Low Shutdown Current: 1.2V or ILED = (VCTRL –100mV)/
(10 • RLED) when VCTRL ≤ 1V. Input bias current is typically 25µA. Below 3V, ISN is an input to the short-circuit
protection feature that forces GATE to 0V if ISP exceeds
ISN by more than 150mV (typ).
ISP (Pin 4/Pin 14): Connection Point for the Positive
Terminal of the Current Feedback Resistor. Input bias
current is dependent upon CTRL pin voltage as shown …