FAN5026_11 Datasheet, PDF (6/17 Pages) Fairchild Semiconductor – Dual DDR / Dual-Output PWM Controller

Electrical Characteristics
Recommended operating conditions, unless otherwise noted.
Symbol
Parameter
Conditions
Power Supplies
IVCC VCC Current
LDRV, HDRV Open, VSEN Forced
Above Regulation Point
Shutdown (EN-0)
ISINK
ISOURCE
ISD
VIN Current, Sinking
VIN Current, Sourcing
VIN Current, Shutdown
VUVLO UVLO Threshold
VIN = 15V
VIN = 0V
Rising VCC
Falling
VUVLOH UVLO Hysteresis
Oscillator
fosc
Frequency
VPP Ramp Amplitude
VRAMP Ramp Offset
G
Ramp / VIN Gain
Reference and Soft-Start
VIN = 16V
VIN = 5V
VIN ≤ 3V
1V < VIN < 3V
VREF Internal Reference Voltage
ISS Soft-Start Current
VSS Soft-Start Complete Threshold
PWM Converters
At Startup
Load Regulation
ISEN
UVLOTSD
UVLO
VSEN Bias Current
Under-Voltage Shutdown
Over-Voltage Threshold
ISNS Over-Current Threshold
Minimum Duty Cycle
IOUTX from 0 to 5A, VIN from 5 to 15V
% of Set Point, 2µs Noise Filter
% of Set Point, 2µs Noise Filter
RILIM= 68.5KΩ, Figure 12
Output Drivers
HDRV Output Resistance
Sourcing
Sinking
LDRV Output Resistance
Sourcing
Sinking
Power-Good Output and Control Pins
Lower Threshold
% of Set Point, 2µs Noise Filter
Upper Threshold
% of Set Point, 2µs Noise Filter
PG Output Low
IPG = 4mA
Leakage Current
VPULLUP = 5V
PG2/REF2OUT Voltage
DDR = 1, 0 mA < IREF2OUT ≤10mA
DDR, EN Inputs
VINH Input High
VINL Input Low
Min. Typ. Max. Units
2.2 3.0
µA
30
µA
10
30
µA
-15 -30
µA
1
µA
4.30 4.55 4.75
V
4.10 4.25 4.45
V
300
mV
255 300 345 KHz
2
V
1.25
V
0.5
V
125
mV/V
250
mV/V
0.891 0.900 0.909 V
5
µA
1.5
V
-2
+2
%
50
80 120
nA
70
75
80
%
115 120 125
%
112 140 168 µA
10
%
12
15
Ω
2.4 4.0
12
15
Ω
1.2 2.0
-86
108
99.00
-94
116
0.5
1
1.01
%
%
V
µA
%
VREF2
2
V
0.8
V
© 2005 Fairchild Semiconductor Corporation
FAN5026 • Rev. 1.0.8
6
www.fairchildsemi.com