Diodes AM4953 User Manual

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Data Sheet

General Description

The AM4953 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 AM4953 is available in MSOP-10, SSOP-10,
MSOP-8, SOIC-8 and PSOP-8 packages.

Features

• 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 16V)

• Low Saturation Output (High Side and Low Side

Saturation Voltage): V
I

=300mA)

OUT

• Built-in Lock Protection and Automatic Restart

Circuits

• Built-in FG/RD Output

• Built-in Hall Sensor Bias (V

• Thermal Protection Circuit

• Small-sized, High Thermal Capacity Package

SAT_TOTAL

=1.2V (typical,

=1.45V)

HB

Applications

• Notebook, Personal Computers

• Power Supplies in Consumer Electronics, Car
Audio

• CPU Cooling Systems

MSOP-10 SSOP-10 MSOP-8

SOIC-8 PSOP-8

Figure 1. Package Types of AM4953

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

1

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Pin Configuration

MM Package M8 Package
(MSOP-10) (MSOP-8)

IN+

HB
IN­CT

OUT1

IN+

IN-

CT

OUT1

1
2
3
4
5

10

RD
FG

9

VCC

8

OUT2

7

GND

6

GS Package
(SSOP-10)

1

IN+

HB

2

IN-

3

CT

4

OUT1

5

M Package MP Package
(SOIC-8) (PSOP-8)

8

1

2

7

FG/RD

VCC

OUT2

3

6

GND

4

5

Figure 2. Pin Configuration of AM4953 (Top View)

IN+

1

IN-

2

3

CT

RD

FG

VCC

OUT2

GND

1

2

3

4

4

8

7

6

5

OUT1

10

9

8

7

6

IN+

IN-

CT

OUT1

8

7

6

5

FG

VCC

OUT2

GND

RD
VCC

OUT2
GND

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

2

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Functional Block Diagram

Figure 3. Functional Block Diagram of AM4953

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

3

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Ordering Information

AM4953 -

Circuit Type

Package

MSOP-10

SSOP-10 FG & RD

MSOP-8 RD

SOIC-8

PSOP-8 FG

BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.

Output Signal:
Blank: FG&RD/RD
F: FG

Package:
MM: MSOP-10
GS : SSOP-10
M8: MSOP-8
M: SOIC-8
MP: PSOP-8

Temperature

Range

FG & RD

-40 to 105ºC

Output

Signal

RD

FG

G1: Green

TR: Tape & Reel
Blank: Tube

Part Number Marking ID

AM4953MM-G1 4953MM-G1 Tube
AM4953MMTR-G1 4953MM-G1 Tape & Reel
AM4953GS-G1 4953GS-G1 Tube
AM4953GSTR-G1 4953GS-G1 Tape & Reel
AM4953M8-G1 4953M8-G1 Tube
AM4953M8TR-G1 4953M8-G1 Tape & Reel
AM4953M-G1 4953M-G1 Tube
AM4953MTR-G1 4953M-G1 Tape & Reel
AM4953FM-G1 4953FM-G1 Tube
AM4953FMTR-G1 4953FM-G1 Tape & Reel
AM4953FMP-G1 4953FMP-G1 Tube
AM4953FMPTR-G1 4953FMP-G1 Tape & Reel

Packing

Type

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

4

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Absolute Maximum Ratings (Note 1, TA=25ºC)

Parameter Symbol

Supply Voltage VCC 20 V
Peak Output Current I
FG/RD Pull-up Voltage VFG/VRD 15 V
FG/RD Output Current IFG/IRD 10 mA

Thermal Resistance
(Junction to Ambient)

Thermal Resistance
(Junction to Case)

Power Dissipation PD

Operating T em perature TOP -40 to 125 ºC
Storage Temperature T
ESD (Human Body Model) ESD 4000 V
ESD (Machine Model) ESD 200 V

800 mA

OUT

MSOP-10 195

MSOP-8 205

θ

JA

θ

JC

-55 to 150 ºC

STG

SSOP-10 155

SOIC-8 160
PSOP-8 110

MSOP-10 46

MSOP-8 48

SSOP-10 39

SOIC-8 40
PSOP-8 36

MSOP-10

MSOP-8

SSOP-10 800

SOIC-8 780
PSOP-8 960

Note 1: Stresses greater than those listed under “Absolute Maximu m 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.

Value

Unit

°C/W

°C/W

585

mW

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Supply Voltage VCC 2.2 16 V
Hall Input Voltage V
Operating Ambient Temperature TA -40 105 ºC

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

0 VCC-1.5 V

ICM

5

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Electrical Characteristics

VCC=12V, TA=25oC, unless otherwise specified.

Parameter Symbol Conditions Min Typ Max Unit

I

VCT=L 6 8 9.6 mA

Supply Current

CT Charge Current I

CC1

I

VCT=H 2 4 6 mA

CC2

1 1.7 2.5

CHG

µA

CT Discharge Current I
CT Charge/Discharge

Current Ratio
CT Clamp Voltage VCL 1.25 1.45 1.65 V

CT Comparator Voltage VCP 0.25 0.45 0.65 V
OUT Low Saturation Voltage V
OUT High Saturation Voltage V
Hall Input Sensitivity VHN 8 20 mV
FG Low Level Voltage VFG IFG=5mA 0.15 0.3 V
FG Leakage Current I
RD Low Level Voltage VRD IRD=5mA 0.15 0.3 V
RD Leakage Current I
HB Voltage VHB IHB=5mA 1.3 1.45 1.6 V

0.15 0.27 0.36

DHG

I

R

CT

I

SAT_L

I

SAT_H

VFG=15V 1 10

FGL

VRD=15V 1 10

RDL

/ I

CHG

OUT

OUT

5 7 10

DHG

=300mA 0.25 0.45 V
=300mA 0.95 1.3 V

µA

µA

µA

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

6

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Typical Performance Characteristics

10

8

6

(mA)

CC

I

4

2

TA=25oC

0

0 5 10 15 20

VCC (V)

I

CC1

I

CC2

(VCT=L)
(VCT=H)

14

12

10

8

(mA)

CC

6

I

4

2

0

-40

-25 0 25 50 75 100 125

TA (oC)

VCC=12V

I
I

(VCT=L)

CC1

(VCT=H)

CC2

Figure 4. ICC vs. VCC Figure 5. ICC vs. TA

2.0

(V)

SAT

V

1.6

1.2

0.8

VCC=12V,TA=25oC

V

SATH

V

SATL

0.4

0.0
0 200 400 600 800

I

(mA)

OUT

800

700

600

500

400

(mW)

D

P

300

200

100

0

-40

-25 0 25 50 75 100 125 150

Package: MSOP-10/MSOP-8

TA (oC)

Figure 6. V

SAT

vs. I

Figure 7. PD vs.TA

OUT

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

7

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Typical Performance Characteristics (Continued)

1000

800

600

(mW)

D

P

400

200

0

-25 0 25 50 75 100 125 150

Package: SSOP-10

TA (oC)

900

750

600

450

300

Power Dissipation (mW)

150

0

-50 -25 0 25 50 75 100 125 150

Ambient Temperature (OC)

Package: SOIC-8

Figure 8. PD vs.TA Figure 9. PD vs.TA

1200

1050

900

750

600

450

Power Dissipation (mW)

300

150

0

-50 -25 0 25 50 75 100 125 150

Ambient Temperature (OC)

Package: PSOP-8

Figure 10. PD vs.T

A

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

8

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Truth Table

Items IN- IN+ CT OUT1 OUT2 FG RD Mode

1 H L

L

2 L H L H H
3 H Off OFF H

H L L

L Purring Rotation

Lock Protection

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

9

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Typical Application

V

HALL

C2

IN+

IN-

AM4953

CT

OUT1

HB

RD
FG

VCC

OUT2

GND

V

C1

(Note 2)

RD

R1

(Note 4)

FG

R2

D1

L

V

V

FG

RD

D1

C1

(Note 5)

R3

AH921

(Note 4)

VCC

HB

IN-

AM4953

IN+

CT

C2

RD
FG

OUT1

OUT2

GND

R1

(Note 4)

R2

L

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 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 4: Each of R1 and R2 is recommended to be 51kΩ typical. R3 is recommended to be 2k and must be added
when V

Note 5: The package of AH921 is SOT-23-3. If it is packaged in TO-92S-3，please exchange IN- with IN+.

is larger than 20V.

CC

Figure 11. Typical Application of AM4953

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

10

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Mechanical Dimensions

MSOP-10 Unit: mm(inch)

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

11

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Mechanical Dimensions (Continued)

SSOP-10 Unit: mm(inch)

1.350(0.053)

3.800(0.150)

4.000(0.157)

1.550(0.061)

0.300(0.012)

0.450(0.018)

0.170(0.007)

0.250(0.010)

5.800(0.228)

6.200(0.244)

0.400(0.016)

1.270(0.050)

4.700(0.185)

5.100(0.201)

0
8

1.000(0.039)
BSC

0.100(0.004)

0.250(0.010)

1.350(0.053)

1.750(0.069)

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

12

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Mechanical Dimensions (Continued)

MSOP-8 Unit: mm(inch)

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

13

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Mechanical Dimensions (Continued)

4.700(0.185)

5.100(0.201)

7

°

SOIC-8 Unit: mm(inch)

1.350(0.053)

1.750(0.069)

0.320(0.013)

°

8

1.000(0.039)

7

°

1.270(0.050)
TYP

0.330(0.013)

0.510(0.020)

0.100(0.004)

0.300(0.012)

3.800(0.150)

4.000(0.157)

0.190(0.007)

0.250(0.010)

0.900(0.035)

0.675(0.027)

0.725(0.029)

R0.150(0.006)

D

0

°

8

°

1°
5°

5.800(0.228)

6.200(0.244)

D

1

:

0

2

0.450(0.017)

0.800(0.031)

5

1

.

0

R

°

8

0.800(0.031)

0.200(0.008)

)

6

0

0

.

0

(

0

Note: Eject hole, oriented hole and mold mark is optional.

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

14

Data Sheet

BTL Drive Single-phase Full-wave Fan Motor Driver AM4953

Mechanical Dimensions (Continued)

PSOP-8 Unit: mm(inch)

3.202(0.126)

3.402(0.134)

Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

15

BCD Semiconductor Manufacturing Limited

IMPORTANT NOTICE

http://www.bcdsemi.com

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi­cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

IMPORTANT NOTICE

IMPORTANT NOTICE

particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

other rights nor the rights of others.

cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use

particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use

MAIN SITE

of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or

of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or

- Headquarters
BCD (Shanghai) Micro-electronics Limited

other rights nor the rights of others.

other rights nor the rights of others.

No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, P. R.C.
Tel: [phone], Fax: [phone]

MAIN SITE

MAIN SITE

REGIONAL SALES OFFICE

- Headquarters

BCD Semiconductor Manufacturing Limited

BCD Semiconductor Manufactur ing Limited

Shenzhen Office

- Wafer Fab

No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office

Shanghai SIM-BCD Semiconductor Manufacturing Limited

Tel: [phone], Fax: [phone]

Unit A Room 1203,Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District

800, Yi Shan Road, Shanghai 200233, China

Shenzhen 518057, China

Tel: [phone], Fax: [phone]

REGIONAL SALES OFFICE

Tel: [phone], Fax: [phone]

Shenzhen Office

REGIONAL SALES OFFICE

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office

Taiwan Office (Hsinchu)

Shenzhen Office

Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen,

BCD Semiconductor (Taiwan) Company Limited

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office

China

8F, No.176, Sec. 2, Gong-Dao 5th Road, East District

Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office

Tel: [phone]

HsinChu City 300, Taiwan, R.O.C

Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China

Fax: [phone]

Tel: [phone], Fax: [phone]

Tel: [phone]
Fax: [phone]

- Wafer Fab
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.

800 Yishan Road, Shanghai 200233, China
Tel: [phone], Fax: [phone]

- Wafer Fab

BCD Semiconductor Manufacturing Limited

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.

Taiwan Office (Taipei)

- IC Design Group

800 Yi Shan Road, Shanghai 200233, China

BCD Semiconductor (Taiwan) Company Limited

Advanced Analog Circuits (Shanghai) Corporation

Tel: [phone], Fax: [phone]

3F, No.17, Lane 171, Sec. 2, Jiu-Zong Rd., Nei-Hu Dist., Taipei(114), Taiwan, R.O.C

8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China

Tel: [phone]

Tel: [phone], Fax: [phone]

Fax: [phone]

Taiwan Office
BCD Semiconductor (Taiwan) Company Limited

USA Office

Taiwan Office

4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,

BCD Semiconductor Corp.

BCD Semiconductor (Taiwan) Company Limited

Tai wan

48460 Kato Road, Fremont, CA 94538, USA

4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,

Tel: [phone]

Tel: [phone]

Taiwan

Fax: [phone]

Fax: [phone]

Tel: [phone]
Fax: [phone]

USA Office

Korea Office
BCD Semiconductor Limited Korea office.

Room 101-1112, Digital-Empire II, 486 Sin-dong,
Yeongtong-Gu, Suwon-city, Gyeonggi-do, Korea
Tel: [phone]

BCD Semiconductor Corp.

USA Office

30920 Huntwood Ave. Hayward,

BCD Semiconductor Corporation

CA 94544, USA

30920 Huntwood Ave. Hayward,

Tel : [phone]

CA 94544, U.S.A

Fax: [phone]

Tel : [phone]
Fax: [phone]