FAN5233 Datasheet, PDF (5/15 Pages) Fairchild Semiconductor – System Electronics Regulator for Mobile PCs

PRODUCT SPECIFICATION
Operating Conditions (Continued)
Recommended Operating Conditions Unless Noted Refers to Block Diagrams
Parameter
LSD On Resistance pull down
HSD On Output, V_CPUMP-V_GS
HSD Off Output, V_GS
LSD On Output, V_5V-Always-V_GS
LSD Off Output, V_GS
Ramp Amplitude, pk-pk
Ramp Offset
Ramp Gain from V_IN
Error Amplifier GBW
Current Limit Threshold
Over Voltage Threshold
Under Voltage Threshold
SDN/SS Full On Voltage Min.
SDN/SS Full Off Voltage Max.
Max Duty Cycle
Min PWM Time
VFB3.3 Input Leakage Current
12V Regulator
Output Voltage Precision
V_FB12
V_FB12 Input Current
Oscillator Frequency (f_osc/3)
Gate Drive On-Resistance
On Output, V_5V-Always-V_GS
Off Output, V_GS
Ramp Amplitude, pk-pk
Error Amplifier GBW
Under Voltage Shut Down
Over Voltage Shut Down
Min Duty Cycle
Max Duty Cycle
5V Always
Bypass Switch rdson
Linear Regulator Accuracy
Rated Output Current
Over-current Limit
Under-voltage Threshold
Reference
Internal Reference Accuracy
Conditions
I = 10µA
I = 10µA
I = 10µA
I = 10µA
VIN = 16V
R2, R8 = 1KΩ
2µs delay
2µs delay
(End of Soft Start)
V_5 =4.9 to 5.1V
and Io=0 to 150mA
Note 2
High or Low
I = 10µA
I = 10µA
2µs delay
Measured at VFB₁₂
(By design)
5.6 to 24V, 0 to 50mA,
5V Main On or Off
I₅
2µs delay
2µs delay
0-70°C
FAN5233
Min.
90
110
70
4.2
40
Typ.
5
2
0.5
125
3
135
115
75
94
200
55
Max.
8
100
100
100
100
180
120
80
800
70
Units
Ω
mV
mV
mV
mV
V
V
mV/V
MHz
µA
%VO
%VO
V
mV
%
nsec
µA
-2
+2
%
2.472
V
100
200
nA
85
100
115
kHz
6
12
Ω
100
mV
100
mV
2
V
1
MHz
70
76
80
%V_O
115
%V_O
0
%
32
33
34
%
1.3
1.5
Ω
-3.3
2
%
0
50
mA
100
180
mA
70
75
80
%
-1
1
%
REV. 1.0.6 1/22/02
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