LM5008

AKTIV

Nicht synchroner Abwärtsregler (Buck), großer Eingangsbereich, 9,5–95 V, 350 mA, mit konstanter Eins

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Datenblatt

document-pdfAcrobat LM5008 95-V, 350-mA, Constant On-Time DC/DC Buck Switching Regulator datasheet (Rev. I) (Englisch) PDF | HTML

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Alternativen vergleichen

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein

LM5163

AKTIV

Synchroner DC/DC-Abwärtswandler mit 100 V-Eingang und 0,5 A und extrem niedrigem IQ Synchronous rectification for smaller footprint and high efficiency and low IQ.

LM5008

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Iout (max) (A)

0.35

Vin (min) (V)

9.5

Vin (max) (V)

95

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

50

Switching frequency (max) (kHz)

600

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Vout (min) (V)

2.5

Vout (max) (V)

75

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000485

Iout (max) (A)

0.35

Vin (min) (V)

9.5

Vin (max) (V)

95

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

50

Switching frequency (max) (kHz)

600

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Vout (min) (V)

2.5

Vout (max) (V)

75

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000485

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

WSON (NGU)

8

16 mm² 4 x 4

Operating Input Voltage Range: 6 V to 95 V
Integrated 100-V, N-Channel Buck Switch
Internal V_CC Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
On-Time Varies Inversely With Line Voltage
Operating Frequency Remains Constant With Varying Line Voltage and Load Current
Adjustable Output Voltage
Highly Efficient Operation
Precision Internal Reference
Low Bias Current
Intelligent Current Limit Protection
Thermal Shutdown
8-Pin VSSOP and WSON Packages
Create a Custom Design Using the LM5008 With the WEBENCH^® Power Designer

Operating Input Voltage Range: 6 V to 95 V
Integrated 100-V, N-Channel Buck Switch
Internal V_CC Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
On-Time Varies Inversely With Line Voltage
Operating Frequency Remains Constant With Varying Line Voltage and Load Current
Adjustable Output Voltage
Highly Efficient Operation
Precision Internal Reference
Low Bias Current
Intelligent Current Limit Protection
Thermal Shutdown
8-Pin VSSOP and WSON Packages
Create a Custom Design Using the LM5008 With the WEBENCH^® Power Designer

The LM5008 350-mA step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 100-V N-channel buck switch and operates over an input voltage range of 9 V to 95 V. The device is easy to implement and is provided in the 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to V_IN. This feature allows the operating frequency to remain relatively constant. The hysteretic control requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to V_OUT. This scheme ensures short-circuit protection while providing minimum foldback. Other protection features include: thermal shutdown, V_CC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.

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Technische Dokumentation

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Alle anzeigen 9

	Typ	Titel		Datum
*	Data sheet	LM5008 95-V, 350-mA, Constant On-Time DC/DC Buck Switching Regulator datasheet (Rev. I)	PDF \| HTML	11 Okt 2018
	Application note	Stability Analysis and Design of COT Type-3 Ripple Circuit		20 Mär 2019
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	White paper	Wide VIN power management ICs simplify white paper (Rev. A)		19 Sep 2013
	EVM User's guide	AN-1330 LM5008 Evaluation Board (Rev. B)		30 Apr 2013
	EVM User's guide	AN-1925 LM5008A Evaluation Board (Rev. C)		30 Apr 2013
	Application note	Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B)		30 Apr 2013
	Application note	Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter (Rev. A)		23 Apr 2013
	Application note	Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A)		23 Apr 2013

Design und Entwicklung

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