FAN5230 Datasheet, PDF (5/16 Pages) Fairchild Semiconductor – System Electronics Regulator for Mobile PCs

Operating Conditions (Continued)
Recommended Operating Conditions Unless Noted Refers to Block Diagrams
Parameter
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
12V Regulator (Continued)
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 and 3.3V 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
I_3.3 + I₅
2µs delay
2µs delay
0-70°C
FAN5230
Min.
90
110
70
4.2
40
Typ.
2
0.5
125
3
135
115
75
94
200
55
Max.
100
100
100
100
180
120
80
800
70
Units
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. 2.8.5 10/17/01
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