Datasheet Analog Devices LTC1871EMS#PBF — 数据表

LTC1871
Wide Input Range, No RSENSE™
Current Mode Boost,
Flyback and SEPIC Controller
DESCRIPTION FEATURES High Efficiency (No Sense Resistor Required)
Wide Input Voltage Range: 2.5V to 36V
Current Mode Control Provides Excellent
Transient Response
High Maximum Duty Cycle (92% Typ)
±2% RUN Pin Threshold with 100mV Hysteresis
±1% Internal Voltage Reference
Micropower Shutdown: IQ = 10μA
Programmable Operating Frequency
(50kHz to 1MHz) with One External Resistor
Synchronizable to an External Clock Up to 1.3 × fOSC
User-Controlled Pulse Skip or Burst Mode® Operation
Internal 5.2V Low Dropout Voltage Regulator
Output Overvoltage Protection
Capable of Operating with a Sense Resistor for
High Output Voltage Applications
Small 10-Lead MSOP Package APPLICATIONS Telecom Power Supplies
Portable Electronic Equipment The LTC®1871 is a wide input range, current mode, boost,
flyback or SEPIC controller that drives an N-channel power …