FAN5232 Fairchild Semiconductor, FAN5232 Datasheet - Page 3

• Manufacturer Part Number: FAN5232
• Description: Adjustable PWM Buck Controller for LCD PCs
• Manufacturer: Fairchild Semiconductor

PRODUCT SPECIFICATION
Recommended Operating Conditions
Electrical Specifications
(V
REV. 1.1.1 10/7/02
VBATT Voltage
Ambient Temperature
Supply
V
V
Switcher
Output Voltage Precision, VFB
Oscillator Frequency, f
Gate Drive On-Resistance for
all Sources and HSD Sinks
Gate Drive On Resistance for
LSD Sink
HSD On Output, V
HSD Off Output, V
LSD On Output, V
LSD Off Output, V
Ramp Amplitude, pk-pk
Ramp Offset
Ramp Gain from VBATT
Error Amplifier GBW
Current Limit Threshold
Over Voltage Threshold
Under Voltage Threshold
Max Duty Cycle
Min HSD On-time
VFBSW, ISNS Input Leakage
Current
SDN/SS Full On Voltage Min.
SDN/SS Full Off Voltage Max.
5V and 3.3V Always
Linear Regulator Accuracy
Rated Output Current
Overcurrent Limit
Undervoltage Threshold
BATT
CC
CC
Input Quiescent Current
Input UVLO Threshold
= 16V, T
Parameter
Parameter
A
= -20 to 85°C, circuit of Figure 1, unless otherwise specified.)
5V-Always
GS
CPUMP
GS
OSC
-V
-V
GS
GS
H/LSD
Stand-by
Shut-down
Rising
Falling
0.1 I 5.5A, 7.2 VBATT 24V
I
I = 10µA
I = -10µA
I = 10µA
I = -10µA
R3 = 1K
2µs delay
2µs delay
5.6V VBATT 22V,
0
I
2µs delay
2µs delay
3.3
100mA, 5.6
Conditions
ILOAD
+ I
5
Open
Conditions
50mA
VBATT
Min.
-20
5.6
24V
4.900
4.900
Min.
-3.3
255
135
110
100
4.3
4.0
4.2
70
80
70
Typ.
Typ.
300
125
150
115
200
100
4.5
4.3
1.5
0.5
75
75
5
5
6
2
3
Max.
24
85
5.100
5.100
Max.
345
100
100
100
100
165
120
200
800
180
1.4
5.1
4.7
60
10
12
80
50
80
8
2
Units
°C
V
Units
mV/V
%V
%V
MHz
KHz
nsec
FAN5232
mA
mV
mV
mV
mV
mV
mV
mA
mA
µA
µA
nA
%
%
%
V
V
V
V
V
O
O
3