BD6721FS_12 Datasheet, PDF (1/17 Pages) Rohm – Multifunction Single-phase Full-wave Fan Motor Driver

Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6721FS
●General description
BD6721FS is a 1chip driver that composes H-bridge of
power DMOS FET.
Moreover, because the level amplifier is installed, the
temperature control by the thermistor is also easy.
●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
„ Lock alarm signal (AL) 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
Lock alarm signal (AL) output voltage
Val
20
V
Lock alarm signal (AL) output current
Ial
10
mA
Reference voltage (REF) output current
Iref
8
mA
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.
●Recommended operating conditions
Parameter
Operating supply voltage range
Operating input voltage range
(H+, H–, TH, MIN, LAIN) (more than Vcc=9V)
Operating input voltage range
(H+, H–, TH, MIN, LAIN) (less than Vcc=9V)
Symbol
Vcc
Vin
Limit
Unit
4.5 to 17.0
V
0 to 7
V
0 to Vcc–2
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
1/13
TSZ02201-0H1H0B100170-1-2
28.JUL.2012 Rev.002