BD6726FU_12 Datasheet, PDF (1/20 Pages) Rohm – Multifunction Single-phase Full-wave

Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6726FU
●General description
BD6726FU is a pre-driver that controls the motor drive
part composed of the power transistors. Moreover,
because the speed feedback function is installed, it is
the best for the motor drive with high rotational accuracy.
●Package
SSOP-C20
W (Typ.) x D (Typ.) x H (Max.)
5.00mm x 6.40mm x 1.35mm
●Features
„ Pre-driver for external power transistors
„ Speed feedback controllable by PWM input
„ PWM soft switching
„ Soft start
„ Quick start
„ Current limit
„ Lock protection and automatic restart
„ Rotation speed pulse signal (FG) output
●Application
„ Fan motors for general consumer equipment of Server, and desktop PC, etc.
SSOP-C20
●Absolute maximum ratings
Parameter
Symbol
Limit
Unit
Supply voltage
Power dissipation
Vcc
20
V
Pd
874.7 ^*1
mW
Operating temperature range
Topr
–40 to +100
°C
Storage temperature range
Tstg
–55 to +150
°C
High side output voltage
Voh
36
V
Low side output voltage
Vol
15
V
Low side output current
Iol
10
mA
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
12
mA
Hall bias (HB) output current
Ihb
12
mA
Input voltage (H+, H–, CS, PWMIN)
Vin
7
V
Input source current (ICT, SHIFT)
Iin
100
µA
Junction temperature
Tj
150
°C
*1 Reduce by 7.0mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
●Recommended operating conditions
Parameter
Symbol
Limit
Unit
Operating supply voltage range
Vcc
5.0 to 17.0
V
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 (PWMIN)
(more than Vcc=7V)
Operating input voltage range 2 (PWMIN)
(less than Vcc=7V)
0 to 7
V
Vin1
0 to Vcc–2
V
0 to 6.5
V
Vin2
0 to Vref
V
Operating input voltage range 3 (MIN)
Operating input voltage range 4 (FIL)
Vin3
0 to Vref
V
Vin4
0 to Vfilh
V
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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TSZ22111・14・001
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TSZ02201-0H1H0B100210-1-2
28.JUL.2012 Rev.002