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BD6994FV 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
BD6994FV
General Description
BD6994FV is a 1chip driver for 12V single-phase
full-wave fan motor. This IC employs the Bi-CMOS
process and incorporates various functions such as low
ON resistance, low power consumption and quiet drive.
Features
SSOP Small Package
BTL Soft Switching Drive
Stand-by Function
Speed Controllable by DC / Pulse Input
Quick Start
Duty Control Start-up Function
Lock Protection and Automatic Restart
(without External Capacitor)
Rotation Speed Pulse Signal (FG) Output
Lock Alarm Signal(AL) Output
Key Specifications
Operating Voltage Range:
Operating Temperature Range:
Output Voltage (Total):
4.5V to 17V
-40°C to +105°C
0.6V(Typ) at 0.4A
Package
SSOP-B16
W (Typ) x D (Typ) x H (Max)
5.00mm x 6.40mm x 1.35mm
Application
Fan motors for general consumer equipment of desktop PC, Projector, etc.
SSOP-B16
Absolute Maximum Ratings
Parameter
Symbol
Limit
Unit
Supply Voltage
VCC 20 V
Power Dissipation
Pd
0.87 (Note 1)
W
Operating Temperature Range
Topr
-40 to +105
°C
Storage Temperature Range
Tstg
-55 to +150
°C
Output Voltage
VO 20 V
Output Current
IO
1.2 (Note 2)
A
Signal(FG/AL) Output Voltage
VFG/VAL
20
V
Signal(FG/AL) Output Current
IFG/IAL
10 mA
Reference Voltage(REF) Output Current
IREF
5 mA
Hall Bias(HB) Output Current 1
IHB1
12 (Note 3)
mA
Hall Bias(HB) Output Current 2
IHB2
5 (Note 4)
mA
Input Voltage(H+, H, TH, MIN, SEL, PS)
VIN
7V
Junction Temperature
Tjmax
150 °C
(Note 1) Derate by 7.0mW/°C if operating over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
(Note 2) Do not exceed Pd and Tjmax.
(Note 3) Ta=0°C or Higher.
(Note 4) Less than Ta=0°C.
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.
Recommended Operating Conditions
Parameter
Operating Supply Voltage Range
Operating Input Voltage Range 1(H+, H) (VCC9V)
Operating Input Voltage Range 1(H+, H) (VCC<9V)
Operating Input Voltage Range 2(TH, MIN)
Symbol
VCC
VIN1
VIN2
Limit
4.5 to 17.0
0.4 to 3
0.4 to VCC/3
0.4 to VREF
Unit
V
V
V
V
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/31
TSZ02201-0H1H0B101220-1-2
13.Jul.2015 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BD6994FV Datasheet

Multifunction Single-phase Full-wave Fan Motor Driver

No Preview Available !

BD6994FV
Pin Configuration
GND
OUT2
VCC
MIN
cc
TH
OSC
FG
AL
1
2
3
4
5
6
7
8
(TOP VIEW)
16 GND
15 OUT1
14 PS
13 SEL
12 REF
11 H
10 HB
9 H+
Figure 1. Pin Configuration
Pin Description
P/No. P/Name
1 GND
2 OUT2
3 VCC
4 MIN
5 TH
6 OSC
7 FG
8 AL
9 H+
10 HB
11 H
12 REF
13 SEL
14 PS
15 OUT1
16 GND
Function
Ground pin
Motor output 2 pin
Power supply pin
Minimum output duty setting pin
Output duty controllable input pin
Oscillating capacitor connecting pin
Speed pulse signal output pin
Lock alarm signal output pin
Hall + input pin
Hall bias pin
Hall - input pin
Reference voltage output pin
Duty control start up function selecting
pin
Power save pin
Motor output 1 pin
Ground pin
Block Diagram
GND
1
GND 16
HALL
2 OUT2 AMP
3 VCC
HALL
AMP OUT1 15
INTERNAL
REG
STANDBY
PS 14
4 MIN
TH
5
OSC
6
PWM
COMP
PWM
COMP
OSC
CONTROL
LOGIC
FUNCTION
SELECTOR
REF
HALL
COMP
SEL 13
REF 12
H11
FG
7
8 AL
QUICK
START
SIGNAL
OUTPUT
LOCK
PROTECT
HALL
BIAS
TSD
HB 10
H+ 9
I/O Truth Table
Hall Input
Driver Output
H+ HOUT1 OUT2
HL LH
L HH L
H; High, L; Low, Hi-Z; High impedance
FG output is open-drain type.
Figure 2. Block Diagram
FG
Hi-Z
L
Motor State
Rotating
Locking
Stand-by
L; Low, Hi-Z; High impedance
AL output is open-drain type.
FG Output
-
-
Hi-Z
AL Output
L
Hi-Z
L
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/31
TSZ02201-0H1H0B101220-1-2
13.Jul.2015 Rev.002


Part Number BD6994FV
Description Multifunction Single-phase Full-wave Fan Motor Driver
Maker ROHM
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BD6994FV Datasheet PDF






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