APW7302B Ver la hoja de datos (PDF) - Anpec Electronics
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APW7302B Datasheet PDF : 19 Pages
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APW7302B
Recommended Operating Conditions (Cont.) (Note 3)
Symbol
Parameter
TA
Ambient Temperature
TJ
Junction Temperature
Note 3: Refer to the typical application circuit.
Range
-40 ~ 85
-40 ~ 125
Unit
oC
oC
Electrical Characteristics
Unless otherwise specified, these specifications apply over VIN=12V, VOUT= 3.3V, VEN=3V and TA=25oC.
Symbol
Parameter
SUPPLY CURRENT
IVIN VIN Supply Current
IVIN_SD VIN Shutdown Supply Current
POWER-ON-RESET (POR)
Test Conditions
VFB=1V, VEN=3V, LX=NC
VEN=0V
APW7302B
Min.
Typ.
Max.
-
1.9
-
-
20
-
VIN POR Voltage Threshold
VIN POR Hysteresis
REFERENCE VOLTAGE
VREF Reference Voltage
OSCILLATOR AND DUTY CYCLE
FOSC Oscillator Frequency
Foldback Frequency
Maximum Converter’s Duty
Minimum On Time
PFM MODE OPERATION
VIN Rising
Regulated on FB pin
VFB=0V
(Note 4)
3.9
4.1
4.3
-
0.5
-
0.9
0.92
0.94
310
340
370
-
110
-
-
90
-
-
220
-
IPK_PFM PFM Mode Current Limit
IPK_TH PWM to PFM Inductor Peak Threshold
POWER MOSFET
-
0.7
-
0.4
-
1
High/low Side MOSFET On Resistance IOUT=2A
High/Low Side MOSFET Leakage
Current
VEN=0V
CURRENT-MODE PWM CONVERTER
-
130
-
-
-
10
Gm Error Amplifier Transconductance
Error Amplifier Voltage Gain
Switch Current to COMP Voltage
Transconductance
PROTECTIONS
COMP=NC (Note 4)
-
800
-
-
400
-
-
4.5
-
ILIM High Side MOSFET Current-Limit
Low Side MOSFET Current-Limit
TOTP Over-Temperature Trip Point
Over-Temperature Hysteresis
Over-Voltage Protection
Peak Current
From Drain to Source
(Note 4)
(Note 4)
(Note 4)
-
3.5
-
-
1
-
-
160
-
-
50
-
-
120
-
Unit
mA
µA
V
V
V
kHz
kHz
%
ns
A
A
mΩ
µA
µA/V
V/V
A/V
A
A
°C
°C
%
Copyright © ANPEC Electronics Corp.
3
Rev. A.2 - Jan., 2012
www.anpec.com.tw
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