WT7527-SN161-1D [WELTREND]
PC POWER SUPPLY SUPERVISOR;
| 型号： | WT7527-SN161-1D |
| 厂家： | 
WELTREND SEMICONDUCTOR |
| 描述： | PC POWER SUPPLY SUPERVISOR PC |
| 文件： | 总12页 (文件大小：243K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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偉詮電子股份有限公司
Weltrend Semiconductor, Inc.
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WT7527
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PC POWER SUPPLY SUPERVISOR
Data Sheet
Version 1.20
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June 22, 2007
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The information in this document is subject to change without notice.
Weltrend Semiconductor, Inc. All Rights Reserved.
新竹市科學工業園區工業東九路24號2樓ꢀ
2F,ꢀNo.ꢀ24,ꢀIndustryꢀE.ꢀ9thꢀRD.,ꢀScienceꢁBasedꢀIndustrialꢀPark,ꢀHsinꢁChu,ꢀTaiwanꢀ
TEL:886ꢁ3ꢁ5780241ꢀ ꢀ FAX:886ꢁ3ꢁ5794278.5770419ꢀ
Email:support@weltrend.com.tw
WT7527
Rev. 1.20
ꢀ
GENERAL DESCRIPTION
TheꢀWT7527ꢀprovidesꢀprotectionꢀcircuits,ꢀpowerꢀgoodꢀoutputꢀ(PGO),ꢀfaultꢀprotectionꢀlatchꢀ(FPOB),ꢀ
andꢀaꢀprotectionꢀdetectorꢀfunctionꢀ(PSONB)ꢀcontrol.ꢀItꢀcanꢀminimizeꢀexternalꢀcomponentsꢀofꢀswitchingꢀ
powerꢀsupplyꢀsystemsꢀinꢀpersonalꢀcomputer.ꢀ
TheꢀOverꢀVoltageꢀDetectorꢀ(OVD)ꢀmonitorsꢀVX,ꢀV33,ꢀV5,ꢀV12AꢀandꢀV12Bꢀinputꢀvoltageꢀlevel.ꢀTheꢀ
UnderꢀVoltageꢀDetectorꢀ(UVD)ꢀmonitorsꢀV33,ꢀV5,ꢀV12AꢀandꢀV12Bꢀinputꢀvoltageꢀlevel.ꢀTheꢀOverꢀCurrentꢀ
Detectorꢀ(OCD)ꢀmonitorꢀI33&V33,ꢀI5&V5,ꢀI12A&V12AꢀandꢀI12B&V12Bꢀinputꢀcurrentꢀsense.ꢀTheꢀpinꢀVXꢀ
providesꢀanꢀextraꢀprotectionꢀfunction.ꢀWhenꢀOVDꢀorꢀUVDꢀorꢀOCDꢀorꢀVXꢀdetectꢀtheꢀfaultꢀvoltageꢀlevel,ꢀ
theꢀFPOBꢀisꢀlatchedꢀHIGHꢀandꢀPGOꢀgoꢀlow.ꢀTheꢀlatchꢀcanꢀbeꢀresetꢀbyꢀPSONBꢀgoꢀHIGH.ꢀThereꢀisꢀ4ꢀmsꢀ
delayꢀtimeꢀforꢀPSONBꢀturnꢀoffꢀFPOB.ꢀ
WhenꢀOVDꢀandꢀUVDꢀandꢀOCDꢀdetectꢀtheꢀrightꢀvoltageꢀlevel,ꢀtheꢀpowerꢀgoodꢀoutputꢀ(PGO)ꢀwillꢀbeꢀ
issue.ꢀ
ꢀ
FEATURES
•ꢀ ꢀ TheꢀOverꢀVoltageꢀDetectorꢀ(OVD)ꢀmonitorsꢀVX,ꢀV33,ꢀV5,ꢀV12AꢀandꢀV12Bꢀinputꢀvoltage.ꢀ
•ꢀ ꢀ TheꢀUnderꢀVoltageꢀDetectorꢀ(UVD)ꢀmonitorsꢀV33,ꢀV5,ꢀV12AꢀandꢀV12Bꢀinputꢀvoltage.ꢀ
•ꢀ ꢀ TheꢀOverꢀCurrentꢀDetectorꢀ(OCD)ꢀmonitorsꢀI33&33,ꢀI5&V5,ꢀI12A&V12AꢀandꢀI12B&V12Bꢀinputꢀpins.ꢀ
•ꢀ TheꢀVXꢀ>ꢀ1.2Vꢀprovideꢀanꢀextraꢀprotection.ꢀ
•ꢀ Bothꢀofꢀtheꢀpowerꢀgoodꢀoutputꢀ(PGO)ꢀandꢀfaultꢀprotectionꢀlatchꢀ(FPOB)ꢀareꢀOpenꢀDrainꢀOutput.ꢀ
•ꢀ ꢀ 75ꢀ/ꢀ600ꢀmsꢀtimeꢀdelayꢀforꢀUVDꢀ/ꢀOCDꢀ/ꢀVXꢀ.ꢀ
•ꢀ ꢀ 300ꢀmsꢀtimeꢀdelayꢀforꢀPGO.ꢀ
•ꢀ ꢀ 38ꢀmsꢀforꢀPSONBꢀinputꢀsignalꢀDe–bounce.ꢀ
•ꢀ ꢀ 14ꢀusꢀforꢀOVDꢀinternalꢀsignalꢀDe–glitch.ꢀ
•ꢀ ꢀ 60ꢀusꢀforꢀUVDꢀ/ꢀVXꢀinternalꢀsignalꢀDe–glitch.ꢀ
•ꢀ ꢀ 20ꢀmsꢀforꢀOCDꢀinternalꢀsignalꢀDe–glitch.ꢀ
•ꢀ ꢀ 73ꢀusꢀforꢀPGIꢀinternalꢀsignalꢀDe–glitch.ꢀ
•ꢀ ꢀ 4ꢀmsꢀforꢀPSONBꢀturnꢁoffꢀFPOB.ꢀ
ꢀ
PIN ASSIGNMENT AND PACKAGE TYPE
Pin assignment
WT7527
1
2
3
4
5
6
7
8ꢀ
16
15
14
13
12
11
10
9ꢀ
PGI
PGO
VCC
V5
GND
FPOB
PSONB
I12A
V33
V12A
I33
RI
I12B
I5
V12B
ꢀ
VX
ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ2
WT7527
Rev. 1.20
ꢀ
ORDERING INFORMATION
ꢀ
Part Number
WT7527–NN160–1D
WT7527–NN161–1D
WT7527–SN160–1D
WT7527–SN161–1D
Package Type
Note
16-Pin Plastic DIP, Pb-free
16-Pin Plastic SOP, Pb-free
PIN DESCRIPTION
PinꢀNameꢀ I/Oꢀ
Descriptionꢀ
ꢀ PGIꢀ
Iꢀ
Pꢀ
Powerꢀgoodꢀinputꢀsignalꢀpinꢀ
Groundꢀ
ꢀ GNDꢀ
ꢀ FPOBꢀ
ꢀ PSONBꢀ
ꢀ I12Aꢀ
ꢀ RIꢀ
Oꢀ Faultꢀprotectionꢀoutputꢀpin,ꢀopenꢀdrainꢀoutputꢀ
Iꢀ
Iꢀ
Iꢀ
Iꢀ
Iꢀ
On/Offꢀswitchꢀinputꢀ
12VAꢀoverꢀcurrentꢀprotectionꢀsenseꢀinputꢀ ꢀ
Currentꢀsenseꢀadjustꢀinputꢀ
12VBꢀoverꢀcurrentꢀprotectionꢀsenseꢀinputꢀ ꢀ
12VBꢀoverꢀvoltageꢀ&ꢀunderꢀvoltageꢀ&ꢀoverꢀcurrentꢀsenseꢀinputꢀ
pinꢀ
ꢀ I12Bꢀ
ꢀ V12Bꢀ
ꢀ VXꢀ
ꢀ I5ꢀ
ꢀ I33ꢀ
ꢀ V12Aꢀ
Iꢀ
Iꢀ
Iꢀ
Iꢀ
Extraꢀprotectionꢀsenseꢀinputꢀ ꢀ
5Vꢀoverꢀcurrentꢀprotectionꢀsenseꢀinputꢀ
3.3Vꢀoverꢀcurrentꢀprotectionꢀsenseꢀinputꢀ
12VAꢀoverꢀvoltageꢀ&ꢀunderꢀvoltageꢀ&ꢀoverꢀcurrentꢀsenseꢀinputꢀ
pinꢀ
ꢀ V33ꢀ
ꢀ V5ꢀ
ꢀ VCCꢀ
ꢀ PGOꢀ
Iꢀ
Iꢀ
Iꢀ
3.3Vꢀoverꢀvoltageꢀ&ꢀunderꢀvoltageꢀ&ꢀoverꢀcurrentꢀsenseꢀinputꢀpinꢀ
5Vꢀoverꢀvoltageꢀ&ꢀunderꢀvoltageꢀ&ꢀoverꢀcurrentꢀsenseꢀinputꢀpinꢀ
Powerꢀsupplyꢀ ꢀ
Oꢀ Powerꢀgoodꢀoutputꢀsignalꢀpin,ꢀopenꢀdrainꢀoutputꢀ
ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ3
WT7527
Rev. 1.20
ꢀ
BLOCK DIAGRAM
ꢀ
WT7527-160
VCC
PowerꢀOnꢀReset
PWR
PWR
VCCI
38ms
4ms
clr
PSONB
debounce
delay
1.2Vꢀ~ꢀ1.8V
Bandgap
VREFꢀ=ꢀ1.2V
Reference
75msꢀ/ꢀ600ms
delay
clr
VREFꢀ=ꢀ1.2V
ꢁUN
V33
+
Internal
VCCIꢀ=ꢀ3.6V
Power
ꢁOV
+
ꢁUN
V5
V12A
V12B
+
PWR
ꢁOV
+
OSC
CLK
ꢁUN
+
ꢁOV
clr
+
60us
ꢁUN
debounce
+
ꢁOV
+
R
S
FPOB
clr
14us
Q
debounce
ꢁOV
VX
+
PGO
clr
73us
300ms
delay
ꢁ
clr
PGI
+
debounce
V12A
ꢁ
I33
+
V12A
IREFꢀ*ꢀ8
V12A
VREFꢀ=ꢀ1.2V
+
ꢁ
V12A
IREF=VREFꢀ/ꢀRI
ꢁ
+
RI
I5
IREFꢀ*ꢀ8
V12A
ꢁ
I12A
+
IREFꢀ*ꢀ8
clr
20ms
V12A
debounce
ꢁ
I12B
+
IREFꢀ*ꢀ8
ꢀ ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ4
WT7527
Rev. 1.20
ꢀ
ABSOLUTE MAXIMUM RATINGS
Parameterꢀ
Supplyꢀvoltage,ꢀVCC,ꢀV12Aꢀ
PGI,ꢀPSONBꢀ
Min.
Max.
Unit
Vꢀ
Vꢀ
–0.3ꢀ
16ꢀ
VCCꢀ+ꢀ0.3（Max.ꢀ7V）ꢀ
V12Aꢀ+ꢀ0.3（Max.ꢀ7V）ꢀ
V12Aꢀ+ꢀ0.3（Max.ꢀ16V）ꢀ
VCCꢀ+ꢀ0.3（Max.ꢀ7V）ꢀ
16ꢀ
Inputꢀvoltageꢀ
–0.3ꢀ
V5,ꢀI5,ꢀV33,ꢀI33ꢀ
Vꢀ
I12A,ꢀV12B,ꢀI12Bꢀ
Vꢀ
PGOꢀ
FPOBꢀ
–0.3ꢀ
–0.3ꢀ
ꢁ40ꢀ
Vꢀ
Vꢀ
℃ꢀ
℃ꢀ
Outputꢀvoltageꢀ
Operatingꢀtemperatureꢀ
Storageꢀtemperatureꢀ
ꢀ
ꢀ
125ꢀ
ꢁ55ꢀ
150ꢀ
*Note:ꢀStressesꢀaboveꢀthoseꢀlistedꢀmayꢀcauseꢀpermanentꢀdamageꢀtoꢀtheꢀdevicesꢀ
ꢀ
RECOMMENDED OPERATING CONDITIONS
Parameter
Conditions
Min.
Typ. Max. Unit
Supplyꢀvoltage,ꢀVCCꢀ
Inputꢀvoltageꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
3.8ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
5ꢀ ꢀ
16ꢀ
7ꢀ
16ꢀ
7ꢀ
16ꢀ
10ꢀ
10ꢀ
65ꢀ
Vꢀ
Vꢀ
Vꢀ
Vꢀ
Vꢀ
mAꢀ
mAꢀ
uAꢀ
PGI,ꢀPSONB,ꢀV5,ꢀV33ꢀ
V12A,ꢀV12Bꢀ
PGOꢀ
FPOBꢀ
FPOBꢀ
PGOꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Outputꢀvoltageꢀ
Outputꢀsinkꢀcurrentꢀ
OutputꢀcurrentꢀforꢀRIꢀ
0.3Vꢀ
0.3Vꢀ
ꢀ
RIꢀ
10ꢀ
ꢀ
ELECTRICAL CHARACTERISTICS, at Ta=25°C and VCC=5V
.
Over Voltage Detection
Parameter
Condition
Min.
Typ.
Max.
Unit
ꢀ V33ꢀ
ꢀ V5ꢀ
ꢀ V12ABꢀ
ꢀ VXꢀ
ꢀ
ꢀ
ꢀ
3.8ꢀ
5.6ꢀ
3.9ꢀ
5.8ꢀ
4.0ꢀ
6.0ꢀ
Vꢀ
Vꢀ
Vꢀ
Vꢀ
uAꢀ
Vꢀ
Overꢀvoltageꢀthresholdꢀ
13.5ꢀ 13.85ꢀ 14.2ꢀ
1.176ꢀ 1.20ꢀ 1.224ꢀ
5ꢀ
UseꢀUVDꢀtimingꢀ
V(FPOB)ꢀ=ꢀ5Vꢀ
Isinkꢀ=10mAꢀ
ILEAKAGEꢀ ꢀ Leakageꢀcurrentꢀ(FPOB)ꢀ
VOLꢀLowꢀlevelꢀoutputꢀvoltageꢀ(FPOB)ꢀ
ꢀ
ꢀ
0.3ꢀ
PGI and PGO
Parameter
ꢀ V33ꢀ
Condition
Min.
Typ.
Max.
Unit
ꢀ
ꢀ
2.8ꢀ
4.2ꢀ
2.9ꢀ
4.4ꢀ
3.0ꢀ
4.6ꢀ
Vꢀ
Vꢀ
Underꢀvoltageꢀthresholdꢀ
ꢀ V5ꢀ
ꢀ V12ABꢀ
ꢀ
ꢀ
10.3ꢀ 10.65ꢀ 11.0ꢀ
1.176ꢀ 1.20ꢀ 1.224ꢀ
5ꢀ
Vꢀ
Vꢀ
uAꢀ
Vꢀ
mVꢀ
Inputꢀthresholdꢀvoltage(PGI)ꢀ
ILEAKAGEꢀ ꢀ Leakageꢀcurrent(PGO)ꢀ
VOLꢀLowꢀlevelꢀoutputꢀvoltage(PGO)ꢀ
OffsetꢀVoltageꢀofꢀOCPꢀcomparatorsꢀ ꢀ
PGOꢀ=ꢀ5Vꢀ
Isinkꢀ=10mAꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0.3ꢀ
6ꢀ
–6ꢀ
PSONB
Parameter
Condition
Min.
Typ.
Max.
Unit
Inputꢀpullꢁupꢀcurrentꢀ
Highꢁlevelꢀinputꢀvoltageꢀ
Lowꢁlevelꢀinputꢀvoltageꢀ
PSONB=ꢀ0Vꢀ
ꢀ
ꢀ
ꢀ
1.8ꢀ
ꢀ
150ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
uAꢀ
Vꢀ
Vꢀ
1.2ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ5
WT7527
Rev. 1.20
ꢀ
TOTAL DEVICE
Parameter
Condition
PSONB=ꢀ5Vꢀ
ꢀ
ꢀ
Min.
Typ.
Max.
Unit
IccꢀSupplyꢀcurrentꢀ
Vccꢀoperationꢀstartꢀupꢀvoltageꢀ
Vccꢀunderꢀlockoutꢀvoltageꢀ
ꢀ
ꢀ
1ꢀ
3.6ꢀ
3.2ꢀ
mAꢀ
Vꢀ
Vꢀ
3.2ꢀ
2.8ꢀ
3.4ꢀ
3.0ꢀ
SWITCHING CHARACTERISTICS, at Ta=-40℃~125℃
Parameter
Condition
Min.
Typ.
Max.
Unit
PGIꢀtoꢀPGOꢀDelayꢀTimeꢀ ꢀ
Td1ꢀ
Td2ꢀ
ꢀ
ꢀ
200ꢀ
49ꢀ
392ꢀ
300ꢀ
75ꢀ
600ꢀ
∞ꢀ
400ꢀ
100ꢀ
800ꢀ
mSꢀ
mSꢀ
mSꢀ
mSꢀ
mSꢀ
ꢁSꢀ
mSꢀ
uSꢀ
ꢁSꢀ
Forꢀ160ꢀ
Forꢀ161ꢀ
ShortꢀcircuitꢀDelayꢀTimeꢀ ꢀ
Td2ꢁ1ꢀ
PGOꢀtoꢀFPOBꢀDelayꢀTimeꢀ
UnderꢀVoltageꢀDelayꢀTimeꢀ
OverꢀCurrentꢀDelayꢀTimeꢀ
OverꢀVoltageꢀDelayꢀTimeꢀ
VXꢀDelayꢀTimeꢀ
Td3ꢀ
Td4ꢀ
Td5ꢀ
Td6ꢀ
Td7ꢀ
Tb1ꢀ
Tb2ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
2ꢀ
4ꢀ
6ꢀ
81ꢀ
27ꢀ
19ꢀ
81ꢀ
52ꢀ
100ꢀ
40ꢀ
13ꢀ
9ꢀ
40ꢀ
24ꢀ
47ꢀ
60ꢀ
20ꢀ
14ꢀ
60ꢀ
38ꢀ
73ꢀ
PSONBꢀDeꢁbounceꢀTimeꢀ
PGIꢀDeꢁbounceꢀTimeꢀ
mSꢀ
ꢁSꢀ
APPLICATION CIRCUIT
+5VSB
D1
+5V
WT752701
+5VSB
1K
PGO
R4=100
PGI
PGI
PGO
VCC
V5
+5VSB
+5VSB
10K
GND
FPOB
PSONB
I12A
+3.3V
+5V
R5=300
PSONB
V33
V12A
I33
0.01uF
22uF
R12,ꢀ1%
30K,ꢀ1%
RI
22uF
R10,ꢀ1%
I12B
I5
V12B
VX
+12VA
22uF
R14,ꢀ1%
+12VB
22uF
R16,ꢀ1%
ꢀ
NOTE1：TheꢀseriesꢀresistorꢀR5ꢀatꢀPSONBꢀcanꢀnotꢀbeꢀomitted.（R5ꢀ=ꢀ300Ωꢀ isꢀsuggested）ꢀ
NOTE2：TheꢀseriesꢀresistorꢀR4ꢀ=ꢀ100Ωꢀ andꢀdiodeꢀD1ꢀatꢀPGOꢀisꢀsuggested.
Weltrend Semiconductor, Inc.
Pageꢀ6
WT7527
Rev. 1.20
ꢀ
ꢀ
APPLICATION NOTE
ꢀ
ꢀ
ꢀ
ꢀ
Whenꢀtheꢀloadꢀcurrentꢀincreased,ꢀtheꢀvoltageꢀ(VL)ꢀcrossꢀtheꢀinductorꢀisꢀincreased.ꢀ
Andꢀwhenꢀinductorꢀvoltageꢀexceedsꢀtheꢀresistorꢀvoltageꢀ(VR),ꢀtheꢀOCPꢀisꢀactive.ꢀ
ꢀ
Sometimesꢀ powerꢁonꢀ orꢀ loadꢀ dynamicsꢀ willꢀ causeꢀ falseꢀ outputꢀ ofꢀ overꢁcurrentꢀ detection.ꢀ Itꢀ canꢀ beꢀ
solvedꢀbyꢀconnectingꢀaꢀcapacitorꢀbetweenꢀVSꢀpinꢀandꢀISꢀpin.ꢀInꢀtypicalꢀcase,ꢀCꢀ≥ꢀ0.47uFꢀisꢀsuggested.ꢀ
ꢀ
ꢀ
OCPꢀpointꢀcanꢀbeꢀcalculatedꢀbyꢀtheꢀfollowingꢀequation:ꢀ
ꢀ
LetꢀVRꢀ=ꢀVLꢀ ꢀ
ꢀ
R × IR = RL × IL
ꢀ
VREF
RI
Q IR = 8× IREF = 8×
RL× IL
ꢀ
∴R =
ꢀ
VREF
8×
RI
ꢀ
Forꢀexample：ꢀ ꢀ
AssumeꢀRI=30Kꢂ,ꢀRL=5mꢂ,ꢀOCPꢀIL=20A.ꢀ
ꢀ
Sol：Rꢀ=ꢀ(ꢀILꢀ*ꢀRLꢀ)ꢀ/ꢀ(ꢀ8ꢀ*ꢀIREFꢀ)ꢀ
=ꢀ(ꢀ20Aꢀ*ꢀ5mꢁ)ꢀ/ꢀ{ꢀ8ꢀ*ꢀ(ꢀ1.2Vꢀ/ꢀ30Kꢁ)}ꢀ
=ꢀ312.5ꢁ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ7
WT7527
Rev. 1.20
ꢀ
APPLICATION TIMMING
ꢀ
1.) PGI (UNDER_VOLTAGE)：
ꢀ
ꢀ
ꢀ
PSONB
td3ꢀ
ꢀ
ꢀ
FPOB
tb1ꢀ
ꢀ
td1+tb2ꢀ
td1+tb2ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
PGO
PGI
tb1ꢀ
tb2ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ8
WT7527
Rev. 1.20
ꢀ
ꢀ
2.) V33, V5, V12 (UNDER_VOLTAGE) or I33, I5, I12 (OVER_CURRENT) or
VX (OVER_VOLTAGE)：
ꢀ
ꢀ
ꢀ
PSONB
td3ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
FPOB
PGO
tb1ꢀ
td1+tb2ꢀ
tb1ꢀ
V33/V5/V12
ꢀ
ꢀ
I33/I5/I12/VX
ꢀ
ꢀ
td2=75mS
ꢀ
PSONB
ꢀ
ꢀ
ꢀ
ꢀ
td2+td4ꢀ/ꢀtd5ꢀ/ꢀtd7ꢀ
td3ꢀ
FPOB
tb1ꢀ
tb1ꢀ
td1+tb2ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
PGO
PGI
tb1ꢀ
V33/V5/V12
ꢀ
ꢀ
I33/I5/I12/VX
td2ꢁ1=600mS
ꢀ
PSONB
FPOB
PGO
tb3ꢀ
td2ꢁ1+td4ꢀ/ꢀtd5ꢀ/ꢀtd7ꢀ
tb1ꢀ
tb1ꢀ
td1+tb2ꢀ
tb1ꢀ
PGI
V33/V5/V12
I33/I5/I12/VX
Weltrend Semiconductor, Inc.
Pageꢀ9
WT7527
Rev. 1.20
ꢀ
ꢀ
3.) V33, V5, V12 (OVER_VOLTAGE)：
ꢀ
ꢀ
ꢀ
PSONB
td3ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
FPOB
PGO
tb1ꢀ
td1+tb2ꢀ
tb1ꢀ
V33/V5/V12
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
PSONB
ꢀ
ꢀ
td6ꢀ
td3ꢀ
ꢀ
ꢀ
FPOB
tb1ꢀ
tb1ꢀ
td1+tb2ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
PGO
tb1ꢀ
V33/V5/V12
ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ10
WT7527
Rev. 1.20
ꢀ
ꢀ
MECHANICAL INFORMATION
PLASTIC DUAL–IN–LINE PACKAGE
ꢀ
ꢀ
NOTEꢀ1：Allꢀlinearꢀdimensionsꢀareꢀinꢀinches（millimeters）.ꢀ
NOTEꢀ2：Thisꢀdrawingꢀisꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.ꢀ
NOTEꢀ3：FallsꢀwithinꢀJEDECꢀMS–001ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ11
WT7527
Rev. 1.20
ꢀ
ꢀ
PLASTIC SMALL–OUTLINE PACKAGE
ꢀ
ꢀ
NOTEꢀ1：Allꢀlinearꢀdimensionsꢀareꢀinꢀinches（millimeters）.ꢀ
NOTEꢀ2：Thisꢀdrawingꢀisꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.ꢀ
NOTEꢀ3：FallsꢀwithinꢀJEDECꢀMS–012ꢀ
ꢀ
ꢀ
Weltrend Semiconductor, Inc.
Pageꢀ12
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