APW7077/A
Electrical Characteristics
(for all values TA = 25°C, VOUT = 3.3V, unless otherwise noted)
APW7077A
Min Typ Max
Symbol
Parameter
Test Condition
Unit
Step-Up Section
Minimum Operating Input
Voltage
VIN
VOUT = VDD
0.9
V
VDD
Operating Voltage
Start-up Voltage
VIN = VDD
1.9
5.5
1
V
V
Io<10mA, VOUT = VDD (<5.5V)
VOUT = 12V, Io<10mA, VDD = VIN
VDD = 3.3V, VFB = 0.5V
0.9
2.0
300
1.9
V
fSW
Operating Frequency
270
330
95
KHZ
Oscillator Frequency Line
Regulation
±
2.0V<VDD<5.5V
VFB = 0.5V
1.2
%
DMAX Maximum Duty Cycle
81
88
%
%
±
Maximum Duty Line Regulation 2.0V<VDD<5.5V
0.5
Power MOSFET
£
ISOURCE EXT Output Source Current
ISINK EXT Output Sink Current
Control Section
-70
80
-110 -150
mA
mA
Duty 5%, EXT = VDD-0.4V
£
120
160
Duty 5%, EXT = 0.4V
Output Voltage Range
External Divider
ILOAD = 0mA
2.0
V
V
VFB
Feedback Voltage
0.98
1
1.02
Feedback Voltage Line
Regulation
2.0V<VDD<5.5V
VFB = 1.4V
±
%
0.1
IFB
Feedback Input Current
Soft-start Time
0.03
25
50
40
nA
ms
V
TSS
10
Soft-start Threshold Voltage
Soft-start Hysteresis Voltage
Duty = 50%
1.65
150
150
100
17
mV
m
A
VDD = VCE = 3.3V, VFB = 0.5V
VDD = VCE = 3.3V, VFB = 1.1V
VDD = VCE = 3.3V, VFB = 1.3V
VDD = 3.3V, VCE = 0V
230
150
25
Iq
Operating Current
m
A
m
A
IOFF
Stand-by Current
Switch-off Current
Logic LOW (VIL)
Logic HIGH(VIH)
CE Pin Input Current
m
A
1
2
VCE
0.7
V
V
1.2
m
A
ICE
VCE = 0V
1
2
VCE = 3.3V
0.07
50
nA
Copyright ã ANPEC Electronics Corp.
4
www.anpec.com.tw
Rev. A.4 - Sep, 2005
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
