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Rohm Semiconductor Electronic Components Datasheet

BD6726FU Datasheet

Multifunction Single-phase Full-wave Fan Motor Driver

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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
Supply voltage
Power dissipation
Vcc 20
Pd 874.7 *1
Operating temperature range
Topr –40 to +100
Storage temperature range
Tstg –55 to +150
High side output voltage
Voh 36
Low side output voltage
Vol 15
Low side output current
Iol 10
Rotation speed pulse signal (FG) output voltage
Vfg
20
Rotation speed pulse signal (FG) output current
Ifg
10
Reference voltage (REF) output current Iref 12
Hall bias (HB) output current
Ihb 12
Input voltage (H+, H–, CS, PWMIN)
Vin 7
Input source current (ICT, SHIFT)
Iin 100
Junction temperature
Tj 150
*1 Reduce by 7.0mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
Unit
V
mW
°C
°C
V
V
mA
V
mA
mA
mA
V
µA
°C
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)
0 to 7
V
Vin1
0 to Vcc–2
V
Operating input voltage range 2 (PWMIN)
(more than Vcc=7V)
Operating input voltage range 2 (PWMIN)
(less than Vcc=7V)
0 to 6.5
V
Vin2
0 to Vref
V
Operating input voltage range 3 (MIN)
Vin3
0 to Vref
V
Operating input voltage range 4 (FIL)
Vin4
0 to Vfilh
V
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/16
TSZ02201-0H1H0B100210-1-2
28.JUL.2012 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BD6726FU Datasheet

Multifunction Single-phase Full-wave Fan Motor Driver

No Preview Available !

BD6726FU
Datasheet
Pin configuration
Pin description
P/No. T/Name
Function
(TOP VIEW)
1 GND Ground terminal
GND 1
20 FG
Offset current setting resister
2 SHIFT
connecting terminal
SHIFT 2
19 PWMIN
Current setting resister connecting
3 ICT
terminal
ICT
OSC
3
4
18 FIL
17 CP
Oscillating capacitor connecting
4 OSC
terminal
5 MIN Minimum output duty setting terminal
MIN 5
16 H–
Integrating output terminal
6 VCONT
(Speed control terminal)
VCONT
REF
6
7
15 HB
14 H+
7 REF Reference voltage output terminal
8 Vcc Power supply terminal
9 A1H High side output terminal 1
Vcc 8
13 CS
10 A1L Low side output terminal 1
11 A2L Low side output terminal 2
A1H 9
12 A2H
12 A2H High side output terminal 2
13 CS Output current detection terminal
A1L 10
11 A2L
14 H+ Hall + input terminal
15 HB Hall bias terminal
Fig.1 Pin configuration
16 H– Hall – input terminal
Pulse width setting capacitor
17 CP
connecting terminal
Pulse smoothing capacitor connecting
18 FIL
terminal
19 PWMIN PWM pulse input terminal
20 FG Speed pulse signal output terminal
Block diagram
1 GND
TSD
2 SHIFT
3 ICT
SPEED
CONTROL
SIGNAL
OUTPUT
Vref
FG 20
19
PWMIN
FIL 18
4 OSC
OSC
PWM SOFT
SWITCHING
5 MIN
H AL L
AMP
PWM
COMP
6
SOFT
START
VCONT
CONTROL
LOGIC
7 REF
REF
H AL L
COMP
HALL
BIAS
LOCK
PROTECT
Vcc
8
Vcc
A1 H
9
QUICK
START
REG
PRE-
DRIVER
CURRENT
LIMIT COMP
REG
CP 17
H– 16
HB 15
H+ 14
Vcl
CS 13
A2 H
12
A1L
10
A2L
11
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
Fig.2 Block diagram
2/16
TSZ02201-0H1H0B100210-1-2
28.JUL.2012 Rev.002


Part Number BD6726FU
Description Multifunction Single-phase Full-wave Fan Motor Driver
Maker ROHM
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BD6726FU Datasheet PDF






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