AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
General Description
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.
Features
• BTL Output Single-phase Full-wave Linear
Drive (Gain Resistor=1k to 360k, 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
• Notebook, Personal Computers
• Power Supplies in Consumer Electronics, Car
Audio and Office Peripherals
• CPU Cooling Systems
MSOP-8
PSOP-8
MSOP-10
Figure 1. Package Types of AM4951/R/2
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
1


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Pin Configuration
Data Sheet
AM4951/R/2
MM Package
(MSOP-8)
MP Package
(PSOP-8)
For AM4951/R 12V Application
MM Package
(MSOP-10)
For AM4951/R 24V Application
For AM4952
Figure 2. Pin Configuration of AM4951/R/2 (Top View)
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Functional Block Diagram
(2)
HB 1.5V REG
1 (1)
IN+
IN-
2 (3)
5 (6)
GND
VCC
7 (8)
4 (5) OUT1
OUT2 6 (7)
Data Sheet
AM4951/R/2
8 (9)
FG
Control
Circuit
Charge Discharge
8 (10) RD
Discharge Pulse
A (B)
A for AM4951/R
B for AM4952
3 (4)
CT
Figure 3. Functional Block Diagram of AM4951/R/2
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
3


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Ordering Information
Data Sheet
AM4951/R/2
AM495
-
Circuit Type
1: AM4951
1R: AM4951R
2: AM4952
Package
MM: MSOP-8
MSOP-10
MP: PSOP-8
G1: Green
TR: Tape & Reel
Blank: Tube
Package
Temperature
Range
MSOP-8
PSOP-8
-40 to 105°C
MSOP-10
Output
Signal
FG
RD
FG
RD
FG & RD
Part Number
AM4951MM-G1
AM4951MMTR-G1
AM4951RMM-G1
AM4951RMMTR-G1
AM4951MP-G1
AM4951MPTR-G1
AM4951RMP-G1
AM4951RMPTR-G1
AM4952MM-G1
AM4952MMTR-G1
Marking ID
4951MM-G1
4951MM-G1
4951RMM-G1
4951RMM-G1
4951MP-G1
4951MP-G1
4951RMP-G1
4951RMP-G1
4952MM-G1
4952MM-G1
Packing
Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
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


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Absolute Maximum Ratings (Note 1, TA=25ºC)
Parameter
Supply Voltage
Peak Output Current
FG/RD Pull-up Voltage
FG/RD Output Current
Thermal Resistance
(Junction to Ambient)
Thermal Resistance
(Junction to Case)
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
VCC
IOUT
VFG/VRD
IFG/IRD
θJA
θJC
PD
TOP
TSTG
Value
28
500
28
10
MSOP-8
205
PSOP-8
110
MSOP-10
195
MSOP-8
48
PSOP-8
36
MSOP-10
46
MSOP-8
585
PSOP-8
960
MSOP-10
585
-40 to 125
-55 to 150
Unit
V
mA
V
mA
°C/W
°C/W
mW
mW
mW
ºC
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
Supply Voltage
Hall Input Voltage
Operating Ambient Temperature
Symbol
VCC
VICM
TA
Min
2.2
0
-40
Max
24
VCC-1.5
105
Unit
V
V
ºC
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
5


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

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
CT Charge Current
CT Discharge Current
CT Charge/Discharge
Current Ratio
CT Clamp Voltage
CT Comparator Voltage
OUT Low Saturation Voltage
OUT High Saturation Voltage
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)
Symbol
ICC1
ICC2
ICHG
IDHG
Conditions
VCT=L
VCT=H
RCT ICHG / IDHG
VCL
VCP
VSAT_L
VSAT_H
VHN
IOUT=200mA
IOUT=200mA
VFG IFG=5mA
IFGL VFG=15V
VRD IRD=5mA
IRDL VRD=15V
VHB IHB=1mA
Min Typ Max Unit
3 6 9 mA
2.5 5 7.5 mA
0.9 1.3 1.5 µA
0.1 0.15 0.25 µA
6 8 10
1.3 1.5 1.7 V
0.3 0.5 0.7 V
0.25 0.45 V
0.95 1.2 V
7 15 mV
0.15 0.3 V
1 30 µA
0.15 0.3 V
1 30 µA
1.35 1.5 1.65 V
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
6


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Typical Performance Characteristics
Data Sheet
AM4951/R/2
9
8
I (V =L)
CC1 CT
I (V =H)
CC2 CT
7
T =25oC
A
6
5
4
3
2
1
0 3 6 9 12 15 18 21 24
V (V)
CC
Figure 4. Supply Current vs. Supply Voltage
12
V =12V
CC
10
I (V =L)
CC1 CT
8 I (V =H)
CC2 CT
6
4
2
0
-50 -25
0
25 50 75 100 125
T (oC)
A
Figure 5. Supply Current vs. Ambient Temperature
1.6
1.4
V =12V, T =25oC
CC A
1.2
1.0
0.8
V
SAT_H
0.6 V
SAT_L
0.4
0.2
0.0
0 50 100 150 200 250 300 350 400
I (mA)
OUT
900
Package: MSOP-8/MSOP-10
750
600
450
300
150
0
-50 -25 0 25 50 75 100 125 150
T (OC)
A
Figure 6. Saturation Voltage vs. Output Current
Figure 7. Power Dissipation vs. Ambient Temperature
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
7


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Typical Performance Characteristics (Continued)
Data Sheet
AM4951/R/2
1200
1050
900
Package: PSOP-8
750
600
450
300
150
0
-50 -25 0 25 50 75 100 125 150
T (oC)
A
Figure 8. Power Dissipation vs. Ambient Temperature
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
8


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Typical Application
Data Sheet
AM4951/R/2
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 51ktypical. 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-3please exchange IN- with IN+.
Figure 9. Typical Application of AM4951/R
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
9


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Typical Application (Continued)
Data Sheet
AM4951/R/2
HALL
IN+
C3
HB
RD
FG
IN- VCC
AM4952
CT OUT2
C2
OUT1
GND
L
VRD
VFG
R1 R2
D1
C1
Figure 10. Typical Application of AM4952
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
10


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Mechanical Dimensions
Data Sheet
AM4951/R/2
MSOP-8
Unit: mm(inch)
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
11


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Mechanical Dimensions (Continued)
PSOP-8
Data Sheet
AM4951/R/2
Unit: mm(inch)
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
12


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BTL Drive Single-phase Full-wave Fan Motor Driver
Mechanical Dimensions (Continued)
Data Sheet
AM4951/R/2
MSOP-10
Unit: mm(inch)
0.180(0.007)
0.280(0.011)
0.500(0.020)
TYP
0.090(0.004)
0.230(0.009)
2.900(0.114)
3.100(0.122)
0°
6° 0.750(0.030)
0.950(0.037)
0.820(0.032)
1.100(0.043)
Note: Eject hole, oriented hole and mold mark is optional.
Apr. 2012 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
13


AM4951 (BCD)
BTL Drive Single-phase Full-wave Fan Motor Driver

No Preview Available !

Click to Download PDF File for PC

BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
cpaatritoicnuslahrerpeuinrp. oBsCe,DnoSredmoiecsonBdCuDctoSreMmiacnounfdaucctutorirnMgIIMMLaniPPmuOOfiatRRecdtTTudAArionNNegsTTLnNNiomtOOiatTTsesIIduCCamEEsesuamnye
responsibility for use of any its products for
any liability arising out of the application or
any
use
ccooBBaatfCChttaiieDDoonrnnyrSSssiieegthhmmsheetprriiseeccriiooonnnnndo..ddurBBuucthCCtccsettDDooorrrriSSgMMceehimmtraascnniiuccouuiooffftaasnno.ccddtttBhuuuueccCrrriittsnnDoo.ggrr SMMLLeiiaammmnniuuiicttffeeoaaddnccdttrruuueerrssciieetnnorrggvvreeLLMssiimmatthhniieeutteefrrddaiiggcddhhtuoottreettissoonnngmmooLaattkkiaameessssicctuuhhemmdaanneedggoaaeennesssyywwnrreeiiottsshhtppoocooouunnnttssvffiiuubberryiittllhhiiatteeyynrryffnnooloorricttuuiieccssneeeestteooooffuaaaannnnndyyyyerppiittrrisstoosppddprruuooaccddtttessuunccootttrrssrissffgppooheerrtccsaaiinnffoiiyy--r
M-ooppHffaaAerraaaIttdnnNiiccqyyuuuSaIlliirTaatttsserrErppspprruuoorrddppuuooccsstteess,,
nnoorr ddooeess BBCCDD SSeemmiiccoonndduuccttoorr MMaannuuffaaccttuurriinngg LLiimmiitteedd aassssuummee
oorr cciirrccuuiittss.. BBCCDD SSeemmiiccoonndduuccttoorr MMaannuuffaaccttuu- Wrriiannfgger LLFaiibmmiitteedd ddooeess
aannyy lliiaabbiilliittyy aarriissiinngg oouutt ooff tthhee aapppplliiccaattiioonn oorr uussee
nnoott ccoonnvveeyy aannyy lliicceennssee uunnddeerr iittss ppaatteenntt rriigghhttss oorr
BNooCott.hhD1ee6(rrS00hrr,aiiZnggighhhXattissni)gMnnRooiocarrrdott,-hheSlheeeacntrrrgiiohggnahhiicZttsssiLZioohmuffiStooecdittehhnceeerr-ssba..sed Industrial Park, 200241, P. R.C.
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
800 Yishan Road, Shanghai 200233, China
Tel: +86-021-2416-2266, Fax: +86-021-2416-2277
Tel: +021-6485-1491, Fax: +86-021-5450-0008
MMAAIINN SSIITTEE
BR- HCEeGDadISqOeuNmarAitceLrosnSdAuLctEoSr MOFaFnuICfaEcturing Limited
SSUBNT-S8ehh0hWCnol0aeai.:Dtn,nan1+AYzfg6gS8ehh0hi6reRea0Sam-nFo2i,iho1aiZSSaOcmb-nIiIo2fMMXnfR41id1ci-o2-nB6ueB0ag2cCd3C2tR,,DoDS6Sork6haSSy,MadeewFn,mmaagoSnxhirihcc:utaahoo+ifnnanB28gdcd06hltudu0-ua2gc2cir1t.t3Zi,oo-n3G2irrgZ,4aMMCh1Louh6xaiami2iSnnnn2cuaiu7tiAffee7aavdnccectt.euu1-r.rbSiiann.s,ggeNdCLaIoinnm.s,dhiLutaesnttddrDi.a,ilSstPhraiecrntkz,h2e0n02O4f1f,icCehina
RSTTeheElel::nG++z88hI66eO-n-02N57115A-685L40-88565S76,A10C4-Lh94i19En,0aSF0,aOxF:aFx+F:8+6IC-826E1--05745550-80606008-4958
- WaBfeCr FDabSemiconductor Manufacturing Limited
TB3FaC,iwDNS8Ta0ehoSnl0.a:e1nmYO+7-A8g,8ifiFhILd6cfS,Ciao-vachZ2innaeaD1oSdenn(-neIucT61MReseca47idogBti81-opanB5,,Arde9SCG1i,n(0)eT4SDar0c9ahol.,o1Siau2Ywg,nep,iFgmaCJShaniiiuxah)cr-i:acoCZn2+unoo08idRntm06sugo2-pc(a23RStad13ohdn,-,r5.aSyC,M4nhNLh5gaiae0ihnnmingaa-0uHhii0t)fa0euaCid8cD2ot0uris0prt2i.o,n3rTg3aa,tCiiCpooehn.i,i(nL1a1t4d)., Taiwan, R.O.C
Tel: +886T-2e-l:26+5866-22810-68495 9539, Fax: +86-21-6485 9673
Fax: +886-2-2656-2806/26562950
RShEeGnzIhOenNOAffLiceSALES OFFICE
Taiwan Office
USA Office
TSSahhiaewnnazgnhheaOnifSOfiIcfMefic-(BHe CsiDncSheum) iconductor Manufacturing Co., Ltd., Shenzhen Office
USABCODffiTScaeimwiacnonOdfuficcteor (Taiwan) Company LimKitoedrea OfficeUBSCADOSeffmicieconductor Corp.
B8HSARUCTFehCsohnd,liaoii:vnDNntnma+CaAogSn8h.hEce61uRame,-7o7idC56io5SF,icAmt5,IoSyM-nNne813acdo8-20l.uBb2o002lc6gC3,e,t,T7oGCDCSa9roieik5Srw(nnyc1Tegtauwmea-nirDiot,,iwscraNRtao(oh.oSnnO5.Bh)d1.taluCCh0dnc0ogRgt6m.ooh,,raGap3dMiraa)d,noCEaFyxnaoiuLnsurztpfihAmDaoovcirnitestagut.er1trdiRi.cioSnotn.ga, SdNC,haoFen.nu,stzhLihaatnnedn.DDSOiishsfttefrriiniccczett,h, SSenhheeOnnzzfhfhieecnne,518026, CB4T8ehCl4i:nD64TT+a0Fea1S,liK:w-e25+ma91B4T8tn80ioFa8Cc--,i16oRw6D2,-n6o9a2Rd8San8--ud2e-1i1,6cm9tG,F5o5iR6rcur0eoua2mCnin8ogdGo0nru8uRtpc,ao.tnCoagdrA,R(N9To4aea5iidw-3,H8aN,uneU)Di-SCHisAoturmiDcpti,asTtnrayiBRYciptLeoC,eooiTDimnm,agiSitpt1oeee0nmdi1g,-i-c1Go1un1B3C3CT,2d00eACAS,u9l9uDD2c2:99wt00i+44oSgo515HrHien4t-4mauL5u-44lcn1n,i-i,imctE0tUtUwwoy-mi3.,nSotoS2eGpdoAo.d4iAdudyr-eceK2AAto9IovovIn8r,ereg8.e4.CgaH8Hio-6oaadryfySopfww,iioncKarae-rard.oddtor,i,enoagn,
TTFeeallx:::+++8888666--7-7355-55--18868802216687179,85F61a5x: +886-3-5160181
Fax:F+ax1:-5+T18e08l-:66+-6288-8-21669-5296-0226850662808
Tel: +82-31-69TF5ea-lx8::4++3110--551100--332244--22978888
Fax: +86-755-8826 7865
Fax: +886-2-2656 2806
Fax: +1-510-324-2788




AM4951.pdf
Click to Download PDF File