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LM51551DSSR

LM51551DSSR

Active
Texas Instruments

SWITCHING CONTROLLERS 2.2-MHZ WIDE VIN NON SYNCHRONOUS BOOST F A 595-LM51551DSST

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LM51551DSSR

LM51551DSSR

Active
Texas Instruments

SWITCHING CONTROLLERS 2.2-MHZ WIDE VIN NON SYNCHRONOUS BOOST F A 595-LM51551DSST

Find alt

Description

General part information

LM51551 Series

The LM5155x-Q1 (LM5155-Q1 and LM51551-Q1) is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

The LM5155x-Q1 can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.

The LM5155x-Q1 (LM5155-Q1 and LM51551-Q1) is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

Technical Specifications

Parameters and characteristics for this part

SpecificationLM51551DSSR
Clock SyncYes
Control FeaturesSoft Start
Duty Cycle (Max)93 %
Frequency - Switching (Max)2.2 MHz
Frequency - Switching (Min)100 kHz
FunctionStep-Up, Step-Up/Step-Down
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature (Max)125 °C
Operating Temperature (Min)-40 °C
Output ConfigurationPositive
Output Phases1
Output TypeTransistor Driver
Package / Case12-WFDFN Exposed Pad
Package Length3 mm
Package Name12-WSON
Package Width2 mm
Synchronous RectifierNo
TopologySEPIC, Flyback, Boost
Voltage - Supply (Vcc/Vdd) Maximum45 V
Voltage - Supply (Vcc/Vdd) Minimum2.97 V

Pricing

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CAD

3D models and CAD resources for this part