LM34910

AKTIV

Nicht synchroner Abwärtsregler (Buck), 8−36 V, 1,25 A, konstant aktiv

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Datenblatt

document-pdfAcrobat LM34910 High Voltage (40V, 1.25A) Step Down Switching Regulator datasheet (Rev. B) (Englisch)

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LMR50410

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Synchroner Abwärtswandler SIMPLE SWITCHER, 4 bis 36 V, 1 A Current mode control, SOT23 packaging, FPWM and PFM option

LM34910

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Iout (max) (A)

1.25

Vin (min) (V)

8

Vin (max) (V)

36

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

50

Switching frequency (max) (kHz)

1000

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Vout (min) (V)

2.5

Vout (max) (V)

33

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.00063

Iout (max) (A)

1.25

Vin (min) (V)

8

Vin (max) (V)

36

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

50

Switching frequency (max) (kHz)

1000

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Vout (min) (V)

2.5

Vout (max) (V)

33

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.00063

WSON (DPR)

10

16 mm² 4 x 4

Integrated 40V, N-Channel Buck Switch
Integrated Start-Up Regulator
Input Voltage Range: 8V to 36V
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 40V, N-Channel Buck Switch
Integrated Start-Up Regulator
Input Voltage Range: 8V to 36V
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 LM34910 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 40V 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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Technische Dokumentation

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Alle anzeigen 3

	Typ	Titel	Datum
*	Data sheet	LM34910 High Voltage (40V, 1.25A) Step Down Switching Regulator datasheet (Rev. B)	21 Mär 2013
	Selection guide	Power Management Guide 2018 (Rev. R)	25 Jun 2018
	EVM User's guide	AN-1349 LM34910 Evaluation Board (Rev. A)	25 Apr 2013

Design und Entwicklung

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