FAN5236 — Dual Mobile-Friendly DDR / Dual-Output PWM Controller
Electrical Characteristics
Recommended operating conditions, unless otherwise noted.
Symbol
Power Supplies
I
VCC
I
SINK
I
SOURCE
I
SD
V
UVLO
V
UVLOH
Oscillator
f
osc
V
PP
V
RAMP
G
Parameter
Conditions
LDRV, HDRV Open, V
SEN
Forced Above
Regulation Point
Shutdown (EN-0)
V
IN
= 24V
V
IN
= 0V
Rising V
CC
Falling
Min.
Typ.
Max.
Units
V
CC
Current
V
IN
Current, Sinking
V
IN
Current, Sourcing
V
IN
Current, Shutdown
UVLO Threshold
UVLO Hysteresis
Frequency
Ramp Amplitude
Ramp Offset
Ramp / V
IN
Gain
2.2
3.0
30
µA
µA
µA
µA
µA
V
V
mV
10
-15
4.30
4.10
4.55
4.25
300
255
300
2
1.25
0.5
125
250
0.891
0.900
5
1.5
30
-30
1
4.75
4.45
345
KHz
V
V
V
mV/V
mV/V
V
IN
= 16V
V
IN
= 5V
V
IN
≤
3V
1V < V
IN
< 3V
Reference and Soft Start
V
REF
I
SS
V
SS
Internal Reference Voltage
Soft-Start Current
Soft-Start Complete
Threshold
Load Regulators
I
SEN
V
SEN
Bias Current
VOUT Pin Input Impedance
UVLO
TSD
Under-Voltage Shutdown
UVLO
I
SNS
Over-Voltage Threshold
Over-Current Threshold
% of Set Point, 2µs Noise Filter
% of Set Point, 2µs Noise Filter
R
ILIM
= 68.5KΩ, Figure 12
Sourcing
Sinking
Sourcing
Sinking
I
OUTX
from 0 to 5A, V
IN
from 5 to 24V
-2
50
45
70
115
112
80
55
75
120
140
12.0
2.4
12.0
1.2
At Startup
0.909
V
µA
V
PWM Converters
+2
120
65
80
125
168
15.0
4.0
15.0
2.0
%
nA
KΩ
%
%
µA
Output Drivers
HDRV Output Resistance
LDRV Output Resistance
Ω
Ω
Continued on following page…
© 2002 Fairchild Semiconductor Corporation
FAN5236 • Rev. 1.3.2
www.fairchildsemi.com
6
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