BD6971FS_12 Datasheet, PDF (1/16 Pages) Rohm – Multifunction Single-phase Full-wave

Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6971FS
●General description
BD6971FS is a 1chip driver that composes H-bridge of
power DMOS FET.
Moreover, it is possible to correspond to 5V class motor
because it starts from 3.5V.
●Package
SSOP-A16
W (Typ.) x D (Typ.) x H (Max.)
6.60mm x 6.20mm x 1.71mm
●Features
„ Driver including power DMOS FET
„ Speed controllable by DC / direct PWM input
„ PWM soft switching
„ Quick start
„ Current limit
„ Lock protection and automatic restart
„ Rotation speed pulse signal (FG) output
SSOP-A16
●Application
„ Fan motors for general consumer equipment of desktop PC, and Projector, etc.
●Absolute maximum ratings
Parameter
Symbol
Limit
Unit
Supply voltage
Power dissipation
Vcc
20
V
Pd
812.5 ^*1
mW
Operating temperature range
Topr
–40 to +100
°C
Storage temperature range
Tstg
–55 to +150
°C
Output voltage
Output current
Vo
20
V
Io
1.0 ^*2
A
Rotation speed pulse signal (FG) output voltage
Vfg
20
V
Rotation speed pulse signal (FG) output current
Ifg
10
mA
Reference voltage (REF) output current
Iref
5
mA
Hall bias (HB) output current 1
Hall bias (HB) output current 2
Ihb1
Ihb2
5
mA
10 ^*3
mA
Input voltage (H+, H–, TH, MIN, CS)
Vin
7
V
Junction temperature
Tj
150
°C
*1 Reduce by 6.5mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
*2 This value is not to exceed Pd.
*3 The condition of Ta=25°C and Vcc=12V
●Recommended operating conditions
Parameter
Operating supply voltage range
Operating input voltage range 1 (H+, H–)
(more than Vcc=9V)
Operating input voltage range 1 (H+, H–)
(less than Vcc=9V)
Operating input voltage range 2 (TH, MIN)
Symbol
Vcc
Vin1
Vin2
Limit
Unit
3.5 to 17.0
V
0 to 7
V
0 to Vcc–2
V
0 to Vref
V
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
1/12
TSZ02201-0H1H0B100160-1-2
28.JUL.2012 Rev.002