FAN9611 Fairchild Semiconductor, FAN9611 Datasheet - Page 6

• Manufacturer Part Number: FAN9611
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN9611 / FAN9612 • Rev. 1.1.4
Electrical Characteristics
Unless otherwise noted, V
negative out of the device.
Supply
Bias Regulator (C
Error Amplifier
PWM
Maximum On-Time
Restart Timer (Each Channel)
Frequency Clamp (Each Channel)
V
Symbol
I
I
I
I
RAMP,OFST
I
OUT_SINK
f
OUT_MAX
OUT_SRC
t
STARTUP
f
t
DD_DYM
SW,MAX
ON,MAX
ON,MIN
V
SW,MIN
V
V
V
I
V
V
V
V
I
BIAS
g
MOT
DD
OFF
HYS
5VB
ON
EA
OH
OL
M
Startup Supply Current
Operating Current
Dynamic Operating Current
UVLO Start Threshold, FAN9611
UVLO Start Threshold, FAN9612
UVLO Stop Threshold Voltage
UVLO Hysteresis, FAN9611
UVLO Hysteresis, FAN9612
5VB Output Voltage
Maximum Output Current
Voltage Reference
Input Bias Current
Output Source Current
Output Sink Current
Output High Voltage
Output Low Voltage
Transconductance
PWM Ramp Offset
Minimum On-Time
Maximum On-Time Voltage
Maximum On-Time
Minimum Switching Frequency
Maximum Switching Frequency
5VB
= 0.1µF)
Parameter
DD
= 12V, T
J
(5)
= -40°C to +125°C. Currents are defined as positive into the device and
(5)
V
Output Not Switching
f
V
V
V
T
Total Variation Over Line,
Load, and Temperature
T
Total Variation Over Line,
Load, and Temperature
V
|V
V
V
I
T
V
R = 125k
R = 125k; V
V
V
SW
SINK
DD
DD
DD
ON
A
A
FB
SS
SS
A
FB
COMP
FB
SS
= 25°C; I
= 25°C
= 25°C
= 50kHz; C
= 1V to 3V;
= 3V; V
> V
> V
– V
= 3V; V
= V
Increasing
Decreasing
– V
< 100µA
> 4.5V; T
6
OFF
SS
PWM_OFFSET
ON
FB
Conditions
| ≤ 0.1V
– 0.2V
FB
FB
LOAD
VIN
= 2.9V
= 3.1V
LOAD
A
= 1mA
= 2.5V;
= 25°C
= 2nF
Min.
-13.7
12.0
2.95
2.91
–0.2
1.16
12.5
120
400
9.5
7.0
4.8
5.0
4.5
0.0
3.4
Continued on the following page…
50
4
Typ.
10.0
12.5
3.00
1.25
16.5
195
525
3.7
7.5
2.5
5.0
5.0
4.7
0.1
5.0
80
78
-8
4
8
3.075
V5VB
Max.
10.5
13.0
3.05
1.30
20.0
110
115
270
630
5.2
8.0
5.2
0.2
0.2
6.6
12
-4
6
0
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µmho
Unit
kHz
kHz
mA
mA
mA
mV
µA
µA
µA
µA
µs
µs
V
V
V
V
V
V
V
V
V
V