Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6994FV
General Description
Key Specifications
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.
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
Features
W (Typ) x D (Typ) x H (Max)
5.00mm x 6.40mm x 1.35mm
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
SSOP-B16
Application
Fan motors for general consumer equipment of desktop PC, Projector, etc.
Absolute Maximum Ratings
Parameter
Symbol
VCC
Limit
20
Unit
V
Supply Voltage
Power Dissipation
Pd
0.87 (Note 1)
-40 to +105
-55 to +150
20
W
Operating Temperature Range
Storage Temperature Range
Output Voltage
Topr
Tstg
VO
°C
°C
V
Output Current
IO
1.2 (Note 2)
A
Signal(FG/AL) Output Voltage
Signal(FG/AL) Output Current
Reference Voltage(REF) Output Current
Hall Bias(HB) Output Current 1
Hall Bias(HB) Output Current 2
Input Voltage(H+, H–, TH, MIN, SEL, PS)
Junction Temperature
VFG/VAL
IFG/IAL
IREF
20
V
10
mA
mA
mA
mA
V
5
IHB1
12 (Note 3)
5 (Note 4)
7
IHB2
VIN
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
Symbol
VCC
Limit
Unit
V
Operating Supply Voltage Range
4.5 to 17.0
0.4 to 3
Operating Input Voltage Range 1(H+, H–) (VCC≥9V)
Operating Input Voltage Range 1(H+, H–) (VCC<9V)
Operating Input Voltage Range 2(TH, MIN)
V
VIN1
VIN2
0.4 to VCC/3
0.4 to VREF
V
V
○Product structure:Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays
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