TA9687GN Просмотр технического описания (PDF) - O2Micro International
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TA9687GN Datasheet PDF : 14 Pages
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Recipient #118203 printed on 4/15/2008. This is a ONE-TIME copy. Updates will not be provided.
ta9687
REFERENCE APPLICATION CIRCUIT
CN2
VIN
1
2
VIN
GND
GND
PWM
3
4
5
6
ENA
R31
1K
C36
0.1u
R33
1K
ENA
R32 C37
100K 1n
F1
3A
PWM
R34
100K
Q1
2N3904
R26
5.1k
ZD1
5.6v 5%
U1
NDR2 8
NDR2
7 GNDP
VDDA
6 PDR2
5
GNDA
R15
84.5K
4 RT1
R16 270K
3 CT
2
SSTCMP
C22
C21
220p
47n
1 VSEN
9 NDR1
NDR1
PDR1 10
VDDA 11
12
TIMER
PWM 13 PWM
ISEN 14
15
OVPT
ENA 16 ENA
D6
VS1
VS2
R14
BAV70/SOT
C20
10n
1M
D8
VS3
VS4
BAV70/SOT
R30
C35
360
33n
D4
5.6V
R20
5.1K
D3
5.6V
PDRB
C27
0.047u
PDR2
PDR1
VDDA
PDRA
C26
0.047u
C23
C25
R17
1u
1u
100K
D9
DIODE
R19
5.1K
C39
C38
470u/35V 10u
U5
1
NDR1 2
3
PDRA 4
U6
1
NDR2 2
8
7
6
5
AP4502
8
7
R68
20K
R67 100K
VS1
T22
C50
4.7u
C64
2.2n
C63
22p
C62
10p
C65
10p
R69 2.2K
R64 4.3K
VS2
R63
3M
R65
3M
D18
DIODE
CN19
1
2
CN23
1
2
CN22
1
2
C24
0.1u
R18
100K
3
PDRB 4
6
5
AP4502
R71 100K
VS4
C67
R72
20K 2.2n
C66
VS3
22p
R66 4.3K
R70 2.2K
D17
BAV99/SOT
CN24
1
2
D19
DIODE
Confidential
Copyright 2007 O2 Micro
Inc.
All Rights Reserved
Patent Pending
Figure 2: Typical Application
VIN: 12V ~ 18V
ENA: 0V—1V Disable; 2V—5V Enable
VDDA: 4.75V – 5.25V
PWM: 3.3Vpp, 200Hz, 10% Min Brightness, 100% Max Brightness
CONFIDENTIAL
ta9687-DS-1.0
Page 8
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