LB11970FV 查看數據表（PDF） - ON Semiconductor

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LB11970FV

Single-phase Full-wave Driver for Fan Motor

ON Semiconductor 

LB11970FV

Single-phase Full-wave Driver

for Fan Motor

Overview

The LB11970FV is a single-phase full-wave driver for fan motor.

Functions

• Single-phase full-wave drive (16V to 1.2A output transistor incorporated)

• Variable speed function using thermistor input and external signal

incorporated

Enables silent and low-vibration variable speed control through direct PWM

control with separately-excited upper Tr

• Current limiter circuit (limit at IO=480mA with RL=1 connection, the

limiter value determined with Rf)

• Kick-back absorption circuit incorporated

• Low-consumption, low-loss, and low-noise drive enabled by the soft switching

circuit during phase shift

• Regeneration Di incorporated with less external parts

• HB incorporated

• Lock protection and automatic reset functions incorporated

• FG (rotation detection) output

• Thermal shutdown circuit incorporated

Applications

• Personal computer power supply systems

• CPU cooling fan systems

Specifications

Absolute Maximum Ratings at Ta = 25C (Note1)

Parameter

Symbol

Conditions Ratings Unit

VCC maximum supply voltage

VM maximum supply voltage

VCC max

VM max

17 V

17 V

OUT pin maximum output current

OUT pin output withstand voltage

HB maximum output current

IOUT max

VOUT max

HB

1.2 A

18 V

10 mA

VTH, RMI input pin withstand voltage

VTH RMI max

7V

P-IN input pin withstand voltage

VP-IN max

VCC

V

FG output pin output withstand voltage VFG max

18 V

FG output current

IFG max

10 mA

Allowable power dissipation

Pd max

Specified

substrate

(Note2)

0.8 W

Operating temperature range

Topr

-30 to 90 °C

Storage temperature range

Tstg

-55 to 150 °C

1. Stresses exceeding those listed in the Maximum Rating table may damage the device. If any of

these limits are exceeded, device functionality should not be assumed, damage may occur and

reliability may be affected.

2. Specified substrate: 30mm30mm0.8mm, paper phenol.

www.onsemi.com

SSOP18 (225mil)

XXXXXXXXXX

YMDDD

XXXXX = Specific Device Code

Y = Year

M = Month

DDD = Additional Traceability Data

ORDERING INFORMATION

See detailed ordering and shipping

information on page 8 of this data

sheet.

© Semiconductor Components Industries, LLC, 2016

1

November 2016- Rev. 1

Publication Order Number:

LB11970FV/D

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