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LTC1877 Datasheet PDF

Part Series:LTC1877 Series
Category:Voltage Regulators
Description:Conv DC-DC Single Step Down 2.65V to 10V 8Pin MSOP
Document:LTC1877EMS8#PBF Datasheet PDF (18 Pages)

LTC1877 Datasheet PDF Voltage Regulators

18 Pages
Linear Technology
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LTC1877EMS8#PBF - Linear Technology Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
8 Pin
Case/Package
MSOP-8
Number of Outputs
1 Output
Output Voltage
0.8V ~ 10V
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LTC1877EMS8#PBF - Linear Technology Function Overview

The LTC1877EMS8#PBF is a high efficiency monolithic synchronous Step-down Regulator uses a constant-frequency, current mode architecture. Supply current during operation is only 10µA and drops to <1µA in shutdown. The 2.65 to 10V input voltage range makes it ideally suited for both single and dual Li-ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. Switching frequency is internally set at 550kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications the LTC1877 can be externally synchronized from 400 to 700kHz. Burst Mode® operation is inhibited during synchronization or when the SYNC/MODE pin is pulled low, preventing low frequency ripple from interfering with audio circuitry. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with 0.8V feedback reference voltage.
High efficiency up to 95%
Very low quiescent current (only 10µA during operation)
550kHz Constant-frequency operation
No Schottky diode required
Low dropout operation (100% duty cycle)
Synchronizable from 400 to 700kHz
Selectable Burst Mode® operation or pulse-skipping mode
0.8V Reference allows low output voltages
Shutdown mode draws <1µA supply current
±2% Output voltage accuracy
Current mode control for excellent line and load transient response
Over-current and over-temperature protected
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