FAN5250 データシートの表示（PDF） - Fairchild Semiconductor
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FAN5250 Datasheet PDF : 17 Pages
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FAN5250
Electrical Specifications
(VCC = 5V, VIN = 5V–24V, and TA = recommended operating ambient temperature range using circuit of Figure 1,
unless otherwise noted)
Parameter
Power Supplies
VCC Current
VIN Current
UVLO Threshold
Regulator / Control Functions
Output Voltage
Initial Accuracy
Static Load Regulation
Error Amplifier Gain
Error Amplifier GBW
Error Amplifier Slew Rate
ILIM Voltage
Over-voltage Threshold
Over-voltage Protection Delay
Under-voltage Shutdown
Under-voltage Delay
EN, input threshold
Output Drivers
HDRV Output Resistance
LDRV Output Resistance
Oscillator
Frequency
Ramp Amplitude, pk-pk
Ramp Offset
Ramp Gain
Reference, DAC and Soft-Start
VID input threshold
VID pull-up current
DAC output accuracy
Conditions
Operating, CL = 10pF
Shut-down (EN = 0)
Operating
Shut-down (EN = 0)
Rising VCC
Falling
per Table 1. Output
Voltage VID
RILIM = 30KΩ
Disabled during VID code
change
Logic LOW
Logic HIGH
Sourcing
Sinking
Sourcing
Sinking
FREQ = HIGH
FREQ = LOW
VIN = 16V
Ramp amplitude
VIN
Logic LOW
Logic HIGH
to internal 2.5V reference
Min. Typ. Max. Units
2.7
3.2
mA
6
30
µA
12
20
µA
1
µA
4.3
4.65 4.75
V
4.1
4.35 4.45
V
0.6
1.75
V
-1
1
% VID
-2
2
% VID
86
dB
2.7
MHz
1
V/µS
0.89
0.91
V
1.9
1.95
2.0
V
1.6
3.2
µS
72
75
78 % VID
1.2
1.6
µS
1.2
V
2
V
3.8
5
Ω
1.6
3
Ω
3.8
5
Ω
0.8
1.5
Ω
255
300
345
KHz
510
600
690
KHz
2
V
0.5
V
125 mV/V
1.21
V
1.62
V
12
µA
-1
1
%
REV. 1.1.6 3/12/03
5
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