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LTC1871

Part Number	LTC1871
Manufacturer	Linear Technology
Description	Flyback and SEPIC Controller
Published	Mar 27, 2005
Detailed Description	FEATURES n High Efﬁciency (No Sense Resistor Required) n Wide Input Voltage Range: 2.5V to 36V n Current Mode Control Pr...
Datasheet	LTC1871 PDF File

Overview

FEATURES n High Efﬁciency (No Sense Resistor Required) n Wide Input Voltage Range: 2.
5V to 36V n Current Mode Control Provides Excellent Transient Response n High Maximum Duty Cycle (92% Typ) n ±2% RUN Pin Threshold with 100mV Hysteresis n ±1% Internal Voltage Reference n Micropower Shutdown: IQ = 10μA n Programmable Operating Frequency (50kHz to 1MHz) with One External Resistor n Synchronizable to an External Clock Up to 1.
3 × fOSC n User-Controlled Pulse Skip or Burst Mode® Operation n Internal 5.
2V Low Dropout Voltage Regulator n Output Overvoltage Protection n Capable of Operating with a Sense Resistor for High Output Voltage Applications n Small 10-Lead MSOP Package APPLICATIONS n Telecom Power Supplies n Portable Electronic Equipment LTC1871 Wide Input Range, No RSENSE™ Current Mode Boost, Flyback and SEPIC Controller DESCRIPTION The LTC®1871 is a wide input range, current mode, boost, ﬂyback or SEPIC controller that drives an N-channel power MOSFET and requires very...

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