LM34910C

ACTIVO

Regulador reductor no síncrono de tiempo de conexión constante de 8-50 V y 1.25 A

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Hoja de datos

document-pdfAcrobat LM34910C High Voltage (50V, 1.25A) Step Down Switching Regulator datasheet (Rev. B) (Inglés)

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LM34910C

ACTIVO

Hoja de datos

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Detalles del producto

Rating

Catalog

Topology

Buck

Iout (max) (A)

1.25

Vin (max) (V)

50

Vin (min) (V)

8

Vout (max) (V)

45

Vout (min) (V)

2.5

Features

Enable, Overcurrent protection

Control mode

Constant on-time (COT)

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.00063

Duty cycle (max) (%)

97

Rating

Catalog

Topology

Buck

Iout (max) (A)

1.25

Vin (max) (V)

50

Vin (min) (V)

8

Vout (max) (V)

45

Vout (min) (V)

2.5

Features

Enable, Overcurrent protection

Control mode

Constant on-time (COT)

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.00063

Duty cycle (max) (%)

97

WSON (DPR)

10

16 mm² (4 mm × 4 mm)

Integrated 55V, N-Channel Buck Switch
Integrated Start-Up Regulator
Input Voltage Range: 8V to 50V
No Loop Compensation Required
Ultra-Fast Transient Response
Operating Frequency Remains Constant with Load Current and Input Voltage
Maximum Duty Cycle Limited During Start-Up
Adjustable Output Voltage
Valley Current Limit At 1.25A
Precision Internal Reference
Low Bias Current
Highly Efficient Operation
Thermal Shutdown

All trademarks are the property of their respective owners.

Integrated 55V, N-Channel Buck Switch
Integrated Start-Up Regulator
Input Voltage Range: 8V to 50V
No Loop Compensation Required
Ultra-Fast Transient Response
Operating Frequency Remains Constant with Load Current and Input Voltage
Maximum Duty Cycle Limited During Start-Up
Adjustable Output Voltage
Valley Current Limit At 1.25A
Precision Internal Reference
Low Bias Current
Highly Efficient Operation
Thermal Shutdown

All trademarks are the property of their respective owners.

The LM34910C Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.25A to the load. This buck regulator contains a 55V N-Channel Buck Switch, and is available in the thermally enhanced WSON-10 package. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Descargar la versión más reciente en inglés	Fecha
*	Hoja de datos	LM34910C High Voltage (50V, 1.25A) Step Down Switching Regulator datasheet (Rev. B)			21/03/2013
	Guía de selección	Power Management Guide 2018 (Rev. R)			25/06/2018

Diseño y desarrollo

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