BD69740FV Datasheet, PDF (1/31 Pages) Rohm – Multifunction Single-phase Full-wave

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
„ 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.
Package
SSOP-B16
W(Typ) x D(Typ) x H(Max)
5.00mm x 6.40mm x 1.35mm
Absolute Maximum Ratings
Parameter
Symbol
SSOP-B16
Rating
Unit
Supply Voltage
Power Dissipation
V_CC
20
V
Pd
0.87^{(Note 1)}
W
Operating Temperature
Topr
-40 to +105
°C
Storage Temperature
Tstg
-55 to +150
°C
Junction Temperature
Tjmax
150
°C
High side output voltage
V_OH
36
V
Low side output voltage
V_OL
15
V
Low side output current
I_OL
10
mA
Lock alarm signal (AL) output voltage
V_AL
20
V
Lock alarm signal (AL) output current
I_AL
10
mA
Reference voltage (REF) output current
I_REF
12
mA
Hall bias (HB) output current
I_HB
12
mA
Input voltage (H+, H-, TH, MIN, CS)
V_IN
7
V
(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
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11.Aug.2015 Rev.001