Datasheet > NCV891930

NCV891930

更新时间： 2022-06-24 15:40:19

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
33页	444K
描述
Low Quiescent Current 2 MHz Automotive Synchronous Buck Controller

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NCV891930 数据手册

Low Quiescent Current

2 MHz Automotive

Synchronous Buck Controller

NCV891930

The NCV891930 is a 2 MHz fixed−frequency low quiescent current

buck controller with spread spectrum that operates up to 38 V

(typical). It may be synchronized to a clock or to separate

NCV891930. Peak current mode control is employed for fast transient

response and tight regulation over wide input voltage and output load

ranges. Feedback compensation is internal to the device, permitting

design simplification. The NCV891930 is capable of converting from

an automotive input voltage range of 3.5 V (4.5 V during startup) to

18 V at a constant base switching frequency above the sensitive AM

band, eliminating the need for costly filters and EMI countermeasures.

The switching frequency folds back to 1 MHz for input voltages

between 20 V up to 38 V (typical). Under load dump conditions up to

45 V the regulator shuts down. A high voltage bias regulator with

automatic switchover to an external 5 V bias supply is used for

improved efficiency. Several protection features such as UVLO,

current limit, short circuit protection, and thermal shutdown are

provided. High switching frequency produces low output voltage

ripple even when using small inductor values and an all−ceramic

output filter capacitor, forming a space−efficient switching solution.

(410 kHz version offered with NCV881930)

www.onsemi.com

QFNW24 4x4, 0.5P

CASE 484AE

Note: With wettable flanks – meets JEDEC MO220

MARKING DIAGRAM

ZZZZZ

30XX

ALYWG

= V8919, 8919A

= 00, 01

= Assembly Location

= Wafer Lot

= Year

ZZZZZ

Features

• 30 mA Operating Current at No Load

• 75 mV Current Limit Sensing

• Capable of 45 V Load Dump

• Board Selectable Fixed Output Voltages With Lockout

• 2 MHz Operating Frequency

• Adaptive Non−Overlap Circuitry

• Integrated Spread Spectrum

• Logic level Enable Input Can be Tied Directly to Battery

• Short Circuit Protection Pulse Skip

• Battery monitoring for UVLO and Overvoltage Protection

• Thermal Shutdown (TSD)

• Adjustable Soft−Start

• SYNCI, SYNCO, Enable, RSTB, ROSC

• QFN Package with Wettable Flanks (pin edge plating)

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

PIN CONNECTIONS

(Top View)

V_CS

CSP

CSN

VOUT

VDRV

VIN

DBIAS

VSEL

V_SO

GND

• NCV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC−Q100

• This Device is Pb−Free, Halogen Free/BFR Free and is RoHS

Compliant

SYNCO

Typical Applications

• Radio and Infotainment

• Instrumentations & Clusters

• ADAS (safety applications)

• Telematics

ORDERING INFORMATION

See detailed ordering and shipping information on page 31 of

this data sheet.

Publication Order Number:

May, 2020 − Rev. 4

NCV891930/D

12 3 4 5 6 7...33

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NCV891930MW00AR2G	ONSEMI	Low Quiescent Current 2 MHz Automotive Synchronous Buck Controller	获取价格
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NCV891930MW01AR2G	ONSEMI	Low Quiescent Current 2 MHz Automotive Synchronous Buck Controller	获取价格
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