Diodes AM4951MMTR-G1 Btl drive single-phase full-wave fan motor driver Datasheet

Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
General Description
Features
The AM4951/R/2 series is a single-phase BTL output
fan motor driver designed by bipolar process. This IC
features high efficiency, silent operation and includes
lock shutdown and automatic restart functions. When
the motor is under lock condition, the lock
shutdown function turns off the output current. When
the lock condition is removed, the IC will
restart automatically and allow DC fan to run. It is
applied for high reliability and low noise application,
such as personal computers, notebook, car audio,
CPU cooling systems and power supplies in
consumer electronics systems.
•
•
•
•
•
•
•
•
•
The AM4951/R series is available in MSOP-8 (12V
application only) or PSOP-8 (24V application only)
package. The AM4952 is available in MSOP-10
package.
AM4951/R/2
BTL Output Single-phase Full-wave Linear
Drive (Gain Resistor=1k to 360kΩ, Gain=51dB)
Support Low-voltage Drive and Feature a Wide
Usable Voltage Range (2.2V to 24V)
Low Saturation Output (High Side and Low Side
Saturation Voltage): VSAT_TOTAL=1.2V (typical,
IOUT=200mA)
Built-in Lock Protection and Automatic Restart
Circuits
Built-in FG/RD Output
Built-in Hall Sensor Bias (AM4952 Only,
VHB=1.5V)
Thermal Protection Circuit
Small-sized, High Thermal Capacity Package
FG Output (AM4951), RD Output (AM4951R),
FG and RD Output (AM4952)
Applications
•
•
•
MSOP-8
Notebook, Personal Computers
Power Supplies in Consumer Electronics, Car
Audio and Office Peripherals
CPU Cooling Systems
PSOP-8
MSOP-10
Figure 1. Package Types of AM4951/R/2
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
1
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Pin Configuration
MM Package
(MSOP-8)
MP Package
(PSOP-8)
For AM4951/R 12V Application
For AM4951/R 24V Application
MM Package
(MSOP-10)
For AM4952
Figure 2. Pin Configuration of AM4951/R/2 (Top View)
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Functional Block Diagram
VCC
7 (8)
HB
(2)
1.5V REG
1 (1)
IN+
4 (5)
OUT1
OUT2 6 (7)
IN2 (3)
GND
5 (6)
8 (9)
FG
Control
Circuit
Charge Discharge
8 (10)
RD
Discharge Pulse
3 (4)
CT
A (B)
A for AM4951/R
B for AM4952
Figure 3. Functional Block Diagram of AM4951/R/2
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
3
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Ordering Information
AM495
-
Circuit Type
G1: Green
1: AM4951
1R: AM4951R
2: AM4952
TR: Tape & Reel
Blank: Tube
Package
MM: MSOP-8
MSOP-10
MP: PSOP-8
Package
Temperature
Range
Output
Signal
FG
MSOP-8
RD
-40 to 105°C
FG
PSOP-8
RD
MSOP-10
FG & RD
Part Number
Marking ID
Packing
Type
AM4951MM-G1
4951MM-G1
Tube
Tape & Reel
AM4951MMTR-G1
4951MM-G1
AM4951RMM-G1
4951RMM-G1
Tube
AM4951RMMTR-G1
4951RMM-G1
Tape & Reel
AM4951MP-G1
4951MP-G1
Tube
AM4951MPTR-G1
4951MP-G1
Tape & Reel
AM4951RMP-G1
4951RMP-G1
Tube
AM4951RMPTR-G1
4951RMP-G1
Tape & Reel
AM4952MM-G1
4952MM-G1
Tube
AM4952MMTR-G1
4952MM-G1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
4
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Absolute Maximum Ratings (Note 1, TA=25ºC)
Symbol
Value
Unit
Supply Voltage
VCC
28
V
Peak Output Current
IOUT
500
mA
FG/RD Pull-up Voltage
VFG/VRD
28
V
FG/RD Output Current
IFG/IRD
10
mA
Parameter
Thermal Resistance
(Junction to Ambient)
Thermal Resistance
(Junction to Case)
Power Dissipation
θJA
θJC
PD
MSOP-8
205
PSOP-8
110
MSOP-10
195
MSOP-8
48
PSOP-8
36
MSOP-10
46
MSOP-8
585
mW
PSOP-8
960
mW
MSOP-10
585
mW
°C/W
°C/W
Operating Temperature
TOP
-40 to 125
ºC
Storage Temperature
TSTG
-55 to 150
ºC
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
Supply Voltage
VCC
2.2
24
V
Hall Input Voltage
VICM
0
VCC-1.5
V
TA
-40
105
ºC
Operating Ambient Temperature
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
5
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Electrical Characteristics
VCC=12V, TA=25oC, unless otherwise specified.
Parameter
Supply Current
Symbol
Conditions
Min
Typ
Max
Unit
ICC1
VCT=L
3
6
9
mA
ICC2
VCT=H
2.5
5
7.5
mA
CT Charge Current
ICHG
0.9
1.3
1.5
µA
CT Discharge Current
IDHG
0.1
0.15
0.25
µA
CT Charge/Discharge
Current Ratio
RCT
6
8
10
CT Clamp Voltage
VCL
1.3
1.5
1.7
V
CT Comparator Voltage
VCP
0.3
0.5
0.7
V
ICHG / IDHG
OUT Low Saturation Voltage
VSAT_L
IOUT=200mA
0.25
0.45
V
OUT High Saturation Voltage
VSAT_H
IOUT=200mA
0.95
1.2
V
7
15
mV
Hall Input Sensitivity
FG Low Level Voltage
(For AM4951/2)
FG Leakage Current
(For AM4951/2)
RD Low Level Voltage
(For AM4951R/2)
RD Leakage Current
(For AM4951R/2)
HB Voltage
(For AM4952)
Apr. 2012
VHN
VFG
IFG=5mA
0.15
0.3
V
IFGL
VFG=15V
1
30
µA
VRD
IRD=5mA
0.15
0.3
V
IRDL
VRD=15V
1
30
µA
VHB
IHB=1mA
1.5
1.65
V
Rev. 1. 4
1.35
BCD Semiconductor Manufacturing Limited
6
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Typical Performance Characteristics
9
12
ICC1 (VCT=L)
ICC2 (VCT=H)
8
VCC=12V
10
o
TA=25 C
7
ICC1 (VCT=L)
8
ICC2 (VCT=H)
ICC (mA)
ICC (mA)
6
5
6
4
4
3
2
2
1
0
3
6
9
12
15
18
21
0
-50
24
-25
0
25
50
75
100
125
VCC (V)
TA ( C)
Figure 4. Supply Current vs. Supply Voltage
Figure 5. Supply Current vs. Ambient Temperature
o
1.6
o
VCC=12V, TA=25 C
1.4
900
Package: MSOP-8/MSOP-10
Power Dissipation (mW)
1.2
VSAT (V)
1.0
0.8
VSAT_H
0.6
VSAT_L
0.4
600
450
300
150
0.2
0.0
0
750
50
100
150
200
250
300
350
0
400
-50
-25
0
25
50
75
100
125
150
O
TA ( C)
IOUT (mA)
Figure 6. Saturation Voltage vs. Output Current
Apr. 2012
Figure 7. Power Dissipation vs. Ambient Temperature
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
7
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Typical Performance Characteristics (Continued)
1200
1050
Package: PSOP-8
900
PD (mW)
750
600
450
300
150
0
-50
-25
0
25
50
75
100
125
150
o
TA ( C)
Figure 8. Power Dissipation vs. Ambient Temperature
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
8
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Typical Application
Note 2: Adding D1 can protect the IC from destruction by reverse connection. If D1 is used, it is necessary to
insert a capacitor C1 to provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan
power supply line, C1 will also be necessary to improve reliability. Its capacity should be larger than 2.2µF.
Note 3: If the Hall sensor bias is taken from VCC, A 1/2 VCC bias, as shown in the figure must be used. Adjusting
the value of R1 and R2 may achieve better startup characteristics and efficiency, even quiet operation.
Note 4: This pin must be left open if unused.
Note 5: If the line between Hall sensor output and Hall sensor input of IC is long, the noise may occur in this line.
But it can be eliminated by adding a capacitor C3.
Note 6: Each of R2, R3, R4 and R5 (AM4951/R only) is recommended to be 51kΩ typical. R1 is recommended
to be 2k and must be added when VCC is larger than 20V.
Note 7: The package of AH920 is SOT-23-3. If it is packaged in TO-92S-3,please exchange IN- with IN+.
Figure 9. Typical Application of AM4951/R
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
9
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Typical Application (Continued)
VRD
VFG
R1
R2
HB
RD
IN+
FG
C3
HALL
D1
VCC
IN-
AM4952
CT
OUT2
C1
C2
GND
OUT1
L
Figure 10. Typical Application of AM4952
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
10
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Mechanical Dimensions
MSOP-8
Apr. 2012
Rev. 1. 4
Unit: mm(inch)
BCD Semiconductor Manufacturing Limited
11
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Mechanical Dimensions (Continued)
Unit: mm(inch)
3.202(0.126)
3.402(0.134)
PSOP-8
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
12
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Mechanical Dimensions (Continued)
MSOP-10
Unit: mm(inch)
0.180(0.007)
0.280(0.011)
0.500(0.020)
TYP
2.900(0.114)
3.100(0.122)
4.750(0.187)
5.050(0.199)
0.400(0.016)
0.800(0.031)
0.090(0.004)
0.230(0.009)
0.750(0.030)
0.950(0.037)
0.820(0.032)
1.100(0.043)
0.150(0.006)
2.900(0.114)
3.100(0.122)
0.020(0.001)
0°
6°
Note: Eject hole, oriented hole and mold mark is optional.
Apr. 2012
Rev. 1. 4
BCD Semiconductor Manufacturing Limited
13
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