Copyright ANPEC Electronics Corp.
Rev. A.4 - May., 2017
APW7320
www.anpec.com.tw4
Electrical Characteristics
APW7320
Symbol
Parameter Test Conditions
Min Typ Max
Unit
SUPPLY CURRENT
I
VIN
VIN Supply Current V
IN
=12V, V
FB
=0.66V, V
EN
=3V, SW=NC - 25 50 μA
I
VIN_SD
VIN Shutdown Supply Current
V
IN
=4.5~18V, V
EN
=0V - - 5 μA
POWER-ON-RESET (POR)
VIN POR Voltage Threshold V
IN
Rising 3.8 4 4.3 V
VIN POR Voltage Hysteresis V
IN
Falling - 0.2 - V
REFERENCE VOLTAGE
V
REF
Reference Voltage Regulated on FB pin, T
J
=25°C 594 600 606 mV
Output Voltage Accuracy T
J
=-40~85°C, I
OUT
=10mA -1.5 - +1.5 %
I
OUT
=10mA~3A T
J
=25°C -2 - +2 %
Load Regulation I
OUT
=0.5A~3A -0.05
- +0.05
%/A
Line Regulation 4.5V≦V
IN
≦18V, I
OUT
=1A, V
OUT
=3.3V
-0.02
-
+0.02
%/V
FB Input Current V
FB
=5.5V, T
J
= -40 ~ 125°C -100 - 100 nA
OSCILLATOR AND DUTY CYCLE
F
OSC
Oscillator Frequency - 500 - kHz
Frequency Accuracy T
J
= 25°C -10 - 10 %
Frequency Accuracy T
J
= -40 ~ 85°C -15 - +15 %
Maximum Converter’s Duty 85 90 - %
Minimum on Time - - 100 ns
Minimum off Time - 200
- ns
POWER MOSFET
High Side MOSFET Resistance I
OUT
=3A
-
80 - mΩ
Low Side MOSFET Resistance I
OUT
=3A - 52 - mΩ
High Side MOSFET Leakage Current
V
EN
=0V, V
SW
=0V, V
IN
=18V
- -
1 μA
Low Side MOSFET Leakage Current
V
EN
=0V, V
SW
=18V, V
IN
=18V
- -
1
μA
BOOTSTRAP POWER
Bootstrap Switch Drop Voltage I
F
= 10mA - 0.1 0.2 V
BOOT Leakage Current V
EN
=0V, V
IN
=V
SW
=18V, V
BST
=23V - - 1
μA
T
D
Dead Time - 20 - ns
PROTECTIONS
Inductor Valley Current-Limit 4 5 6 A
Input Over-Voltage Trip Point 18.5 19 19.5 V
Out of Input Over-Voltage threshold
17 18 19 V
T
OTP
Over-temperature Trip Point - 150 - °C
Over-temperature Hysteresis - 35 - °C
Over- Voltage Protection 120 125 130 %V
REF
Under- Voltage Protection 40 50 60 %V
REF
Under-Voltage Hysteresis - 3 - %
VOUT UVP Hiccup Delay Time -
8
-
t
SS
VOUT UVP Enable Delay Time When EN=H to UVP Function Enabled -
0.5
-
t
SS
Low Side Switch Current-Limit From Drain to Source - 1 - A
Unless otherwise specified, these specifications apply over V
IN
=12V, V
EN
=5V and T
A
= -40 to 85
o
C. Typical values are at T
A
=25
o
C.