FAN8303 Fairchild Semiconductor, FAN8303 Datasheet - Page 5

• Manufacturer Part Number: FAN8303
• Description: The FAN8303 is a monolithic, non-synchronous, stepdown (buck) regulator with internal power MOSFETs
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN8303 • Rev. 1.0.0
Electrical Characteristics
V
IN
Symbol
T
=12V, T
R
f
R
V
V
D
SHORT
ON_MIN
A
TSD
f
G
I
V
I
G
V
ON_H
LKG
I
OSC
UVLO
EN_H
OFF
I
ON_L
MAX
I
PK
VEA
SS
FB
EN
Q
CS
EA
A
= -40 to +85°C, unless otherwise noted.
Feedback Voltage
Upper Switch On Resistance
Lower Switch On Resistance
Upper Switch Leakage Current
Peak Inductor Current
Oscillator Frequency
Under-Voltage Lockout
Short Circuit Frequency
Maximum Duty Cycle
Minimum On Time
Enable Threshold
Enable Threshold Hysteresis
Supply Current (Shutdown)
Supply Current (Quiescent)
Current Sense Gain
Error Amplifier Transconductance
Error Amplifier Voltage Gain
Soft-Start Current
Thermal Shutdown Temperature
Parameter
25°C, 5V<V
V
V
Rising V
V
V
V
EN
FB
FB
EN
EN
>0.3V
<0.3V
=0V,V
=0V
>1.6V; V
Condition
5
IN
SW
IN
=0V
FB
<23V
=0.8V
Min.
0.58
315
1.2
4.2
25
Typ.
0.60
0.22
370
210
150
380
400
155
3.5
4.6
1.6
1.0
90
10
45
4
0
2
6
Max.
0.62
435
5.0
2.0
2.0
10
55
40
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Unit
µA/V
kHz
kHz
A/V
V/V
mV
mA
µA
µA
µA
°C
ns
%
Ω
Ω
V
A
V
V