APW7312 데이터 시트보기 (PDF) - Anpec Electronics
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APW7312 Datasheet PDF : 20 Pages
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APW7312
Recommended Operating Conditions (Cont.) (Note 4)
Symbol
Parameter
TA
Ambient Temperature
TJ
Junction Temperature
Note 3 : Refer to the typical application circuit.
Range
-40 ~ 85
-40 ~ 125
Electrical Characteristics
Refer to the typical application circuits. These specifications apply over VIN=12V, VOUT=3.3V, VEN=3V and TA=25°C.
Symbol
Parameter
Test Conditions
SUPPLY CURRENT
IVIN VIN Supply Current
VFB=1V, VEN=3V, LX=NC
IVIN_SD VIN Shutdown Supply Current
VEN=0V
POWER-ON-RESET (POR)
VIN POR Voltage Threshold
VIN Rising
VIN POR Hysteresis
REFERENCE VOLTAGE
VREF Reference Voltage
Regulated on FB pin
OSCILLATOR AND DUTY CYCLE
FOSC Oscillator Frequency
Foldback Frequency
VFB=0V
Maximum Converter’s Duty
Minimum On Time
VFB=0.925V
(Note 5)
PFM MODE OPERATION
IPK_PFM PFM Mode Current Limit
IPK_TH PWM to PFM Inductor Peak Threshold
POWER MOSFET
High/low Side MOSFET On Resistance
High/Low Side MOSFET Leakage
Current
VEN=0V, VLX=0V
CURRENT-MODE PWM CONVERTER
GEA Error Amplifier Transconductance
Error Amplifier Voltage Gain
Switch Current to COMP Voltage
Transconductance
APW7312
Min.
Typ.
Max.
-
1.9
-
-
0.3
-
3.8
4.05
4.4
-
0.3
-
0.9
0.925 0.943
300
340
380
-
110
-
-
90
-
-
220
-
-
0.8
-
-
0.6
-
-
110
-
-
-
10
-
820
-
-
400
-
-
4.5
-
Unit
oC
oC
Unit
mA
µA
V
V
V
kHz
kHz
%
ns
A
A
mΩ
µA
µA/V
V/V
A/V
Copyright © ANPEC Electronics Corp.
3
Rev. A.5 - Apr., 2013
www.anpec.com.tw
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