APW7068 查看數據表（PDF） - Anpec Electronics
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APW7068 Datasheet PDF : 26 Pages
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APW7068
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VCC12=12V, and TA =-20~70°C. Typical values
are at TA=25°C.
Symbol
Parameter
Test Conditions
PROTECTION
VFB-OV FB Over Voltage Protection Trip Point Percent of VREF
VFBL-UV FBL Under Voltage Protection Trip Point Percent of VREF
IOCSET OCSET Current Source
SOFT START
TSS Internal Soft-Start Interval (NOTE3)
REF_OUT
FOSC=300kHz
VREF_OUT Output Voltage
Offset Voltage
IREF_OUT Source Current
Sink Current
Output Capacitance
APW7068
Unit
Min Typ Max
135
%
50
%
36 40 44 uA
8.5
ms
0.792 0.800 0.808 V
-8
+8 mV
1.5 3
mA
0.25 0.5
mA
0.4 1 2.2 uF
NOTE3: Guaranteed by design.
Typical Application Circuit
C1
2.2nF
VOUT1
R2
3.9K
R1
1.5K
R3
22Ω
C2
0.01uF
C3
22nF
VIN2
3.3V
RGND1
3K
CIN2
470uF
Q4
APM3055
C5 R5
VOUT2
2.5V
R4
2.5K
COUT2
470uF
RGND2
1.17K
Q3
ON/OFF
2N7002
1 BOOT
2 FS_DIS
3 COMP
4 FB
5 DRIVE
6 FBL
7 GND
UGATE 14
PHASE 13
PGND 12
LGATE 11
OCSET 10
REF_OUT 9
VCC12 8
APW7068
* C5, R5 for specific application
C4
0.1uF
Q1
APM2509
L
1uH
VIN1
CIN1
12V
470uFx2
VOUT1
1.2V
Q2
APM2506
C6
2.2nF
R6
2.2Ω
COUT1
470uFx2
C8
1uF
R8
R7
12V
2.2Ω
C7
1uF
Copyright © ANPEC Electronics Corp.
6
Rev. A.2 - Jun., 2006
www.anpec.com.tw
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