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FAN5250 数据表(PDF) 5 Page - Fairchild Semiconductor

部件名 FAN5250
功能描述  Mobile Processor Core-Voltage Regulator
Download  17 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FAN5250 数据表(HTML) 5 Page - Fairchild Semiconductor

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


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