FAN5026 Просмотр технического описания (PDF) - Fairchild Semiconductor
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FAN5026 Datasheet PDF : 17 Pages
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Electrical Specifications Recommended operating conditions, unless otherwise noted.
Parameter
Conditions
Power Supplies
VCC Current
LDRV, HDRV Open, VSEN forced
above regulation point
Shut-down (EN=0)
VIN Current – Sinking
VIN = 15V
VIN Current – Sourcing
VIN = 0V
VIN Current – Shut-down
UVLO Threshold
Rising VCC
Falling
UVLO Hysteresis
Oscillator
Frequency
Ramp Amplitude, pk–pk
VIN = 16V
Ramp Amplitude, pk–pk
VIN = 5V
Ramp Offset
Ramp / VIN Gain
VIN ≥ 3V
Ramp / VIN Gain
1V < VIN < 3V
Reference and Soft Start
Internal Reference Voltage
Soft Start Current (ISS)
Soft Start Complete Threshold
at start-up
PWM Converters
Load Regulation
IOUTX from 0 to 5A,
VIN from 5 to 15V
VSEN Bias Current
Under-Voltage Shutdown
as % of set point. 2µS noise filter
Over-Voltage Threshold
as % of set point. 2µS noise filter
ISNS Over-Current Threshold
Minimum Duty Cycle
RILIM= 68.5KΩ see Figure 10.
Output Drivers
HDRV Output Resistance
Sourcing
Sinking
LDRV Output Resistance
Sourcing
Sinking
PG (Power Good Output) and Control pins
Lower Threshold
as % of set point, 2µS noise filter
Upper Threshold
as % of set point, 2µS noise filter
PG Output Low
IPG = 4mA
Leakage Current
PG2/REF2OUT Voltage
DDR, EN Inputs
VPULLUP = 5V
DDR = 1, 0 mA < IREF2OUT < 10mA
Input High
Input Low
Min. Typ. Max.
2.2 3.0
30
10
30
–15 –30
1
4.3 4.55 4.75
4.1 4.25 4.45
300
255 300 345
2
1.25
0.5
125
250
0.891 0.9 0.909
–5
1.5
-2
+2
50
80 120
70
75
80
115 120 125
112 140 168
10
12
15
2.4
4
12
15
1.2
2
–86
–94
108
116
0.5
1
99
1.01
2
0.8
Units
mA
µA
µA
µA
µA
V
V
mV
KHz
V
V
V
mV/V
mV/V
V
µA
V
%
nA
%
%
µA
%
Ω
Ω
Ω
Ω
%
%
V
µA
% VREF2
V
V
5
FAN5026 Rev. 1.0.5
www.fairchildsemi.com
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