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FAN5026 Datasheet(PDF) 5 Page - Fairchild Semiconductor

No. de pieza FAN5026
Descripción Electrónicos  Dual DDR/Dual-output PWM Controller
Download  17 Pages
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Fabricante Electrónico  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5026 Datasheet(HTML) 5 Page - Fairchild Semiconductor

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


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