Datasheet
DC Brushless Motor Drivers for Fans
Multifunction Single-phase Full-wave
Fan Motor Driver
BD69740FV
Description
BD69740FV is a pre-driver that controls the motor drive part composed of the power transistors.
It incorporates current limiting circuit, lock protection and automatic restart circuit, PWM soft switching circuit, soft start
circuit, and quick start circuit.
The pin is compatible with BD69730FV (rotation speed pulse signal output).
Features
Pre-driver for external power transistors
Package
SSOP-B16
W(Typ) x D(Typ) x H(Max)
5.00mm x 6.40mm x 1.35mm
Speed controllable by DC / direct PWM input
PWM soft switching
Soft start
Quick start
Current limit
Lock protection and automatic restart
Lock alarm signal (AL) output
Applications
Fan motors for general consumer equipment of
desktop PC, and Server, etc.
SSOP-B16
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply Voltage
VCC
Pd
20
V
W
Power Dissipation
0.87(Note 1)
Operating Temperature
Topr
Tstg
Tjmax
VOH
VOL
IOL
-40 to +105
°C
°C
°C
V
Storage Temperature
-55 to +150
Junction Temperature
150
36
15
10
20
10
12
12
7
High side output voltage
Low side output voltage
V
Low side output current
mA
V
Lock alarm signal (AL) output voltage
Lock alarm signal (AL) output current
Reference voltage (REF) output current
Hall bias (HB) output current
Input voltage (H+, H-, TH, MIN, CS)
VAL
IAL
mA
mA
mA
V
IREF
IHB
VIN
(Note 1) Reduce by 7.0mW/℃ over 25℃. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated
over the absolute maximum ratings.
○Product structure:Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays
.
www.rohm.com
TSZ02201-0H1H0B101570-1-2
11.Aug.2015 Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
1/28