APS39903 Datasheet, PDF (5/17 Pages) Diodes Incorporated – PUMP EXPRESSTM COMPATIBLE AC/DC PSR SWITCHER

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Diodes Incorporated
APS39903
Electrical Characteristics (@VCC = 12V, TA = +25°C, unless otherwise specified.) (Cont.)
Symbol
Parameters
VFB@4.8V
VFB@4.6V
VFB@4.4V
VFB@4.2V Feedback Threshold Voltage
VFB@4V
VFB@3.8V
VFB@3.6V
RFB
FB Pin Input Resistance
VCABLE/VOUT% Cable Compensation Ratio@5V
CONSTANT CURRENT SECTION
tONS/tSW@5V
&4.2V
tONS/tSW@
4.8V&4V
tONS/tSW@
4.6V&3.8V
tONS/tSW@
4.4V&3.6V
Maximum Secondary Duty Cycle
DYNAMIC SECTION
Conditions
–
VFB=4V
–
VFB=2V (Note 5)
VUV_H
Under Voltage of Feedback Pin for VCS_H (Note 5)
OUTPUT VOLTAGE SELECTION SECTION
VCPC_L
VCPC_H
Current Control Threshold
tON_A
tON_B
tON_C
Current Control Pattern Time
tOFF_D
tWDT
Watch Dog Time
PROTECTION FUNCTION SECTION
VCPC control_L
VCPC control_H
(Note 5)
–
VFB(OVP)
VCC(OVP)
VFB(SCP)
tSCP
TOTP
THYS
Over Voltage Protection
Over Voltage Protection at VCC Pin
Short Circuit Protection
Maximum Time under VFB(SCP)
Shutdown Temperature
Temperature Hysteresis
–
–
VFB @ Hiccup
–
–
–
Note 5: Guaranteed by design.
Min
Typ
3.75
3.85
3.61
3.7
3.47
3.56
3.32
3.41
3.18
3.26
3.03
3.11
2.89
2.96
560
700
5
6
0.47
0.5
0.49
0.52
0.51
0.54
0.53
0.56
Max
Unit
3.95
3.79
3.65
3.5
V
3.34
3.19
3.03
840
kΩ
7
%
0.53
0.55
–
0.57
0.59
3.61
3.68
3.75
V
–
88
–
150
400
500
220
300
50
100
50
100
180
210
–
mV
–
600
380
ms
150
150
240
ms
7.1
7.5
7.9
V
27
30
33
V
1.61
1.7
1.79
V
116
128
140
ms
+128
+140
+152
°C
+36
+40
+44
°C
APS39903
Document number: DS37226 Rev. 2 - 2
5 of 17
www.diodes.com
October 2014
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