FAN9611 Fairchild Semiconductor, FAN9611 Datasheet - Page 7

• 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.
Current Sense
Zero Current Detection
Output
Soft-Start (C
Input Brown-Out Protection
Input-Voltage Feedforward Range
Phase Management
Over-Voltage Protection Using FB Pin – Cycle-by-Cycle (Input)
Over-Voltage Protection Using OVP Pin – Latching (Input)
Note:
5.
V
Symbol
V
t
V
I
I
V
V
t
OVPNL_HYS
CS_DELAY
I
V
V
I
V
ZCD_SRC
V
V
ZCD_SNK
ZCD_DLY
I
I
V
V
SOURCE
FF_RATIO
SS_MAX
PH,DROP
SS_MIN
VINSNK
O_UVLO
OVPLCH
I
t
t
PH,ADD
ZCD_IN
V
I
OVPNL
ZCD_H
ZCD_L
IN_BO
FF_UL
I
SINK
RISE
FALL
RVS
Not tested in production.
CS
CS
CS Input Threshold Voltage Limit
CS Input Current
CS to Output Delay
Input Voltage Threshold
Input High Clamp Voltage
Input Low Clamp Voltage
Source Current Capability
Sink Current Capability
Turn-On Delay
OUTx Sink Current
OUTx Source Current
Rise Time
Fall Time
Output Voltage During UVLO
Reverse Current Withstand
Maximum Soft-Start Current
Minimum Soft-Start Current
Input Brownout Threshold
V
V
V
Phase Dropping Threshold
Phase Adding Threshold
Non-Latching OVP Threshold
(+8% above V
OVP Hysteresis
Latching OVP Threshold (+15%)
SS
IN
IN
FF_UL
= 0.1µF)
Sink Current
Feedforward Upper Limit
/ V
IN_BO
Parameter
OUT_NOMINAL
(5)
(5)
DD
= 12V, T
(5)
(5)
(4)
(4)
(
Continued
)
(4)
J
(5)
(5)
(5)
= -40°C to +125°C. Currents are defined as positive into the device and
)
I
ZCDx to OUTx
V
V
C
C
V
V
V
V
from 2 to 1 Phase, T
V
from 1 to 2 Phase, T
T
DRV1=DRV2=0V
FB Decreasing
DRV1=DRV2=0V
V
CS Stepped from 0V to 5V
I
V
V
ZCD
ZCD
A
CSX
OUTx
OUTx
DD
COMP
COMP
VIN
VIN
COMP
COMP
LOAD
LOAD
= 25°C
= 0.5mA
= –0.5mA
= 5V; I
> 1.1V
< 0.8V
= 0V to 1V
= V
= V
= 1nF, 10% to 90%
= 1nF, 90% to 10%
< 3.0V
> 4.5V
Decreasing, Transition
Increasing, Transition
7
Conditions
DD
DD
OUT
/2; C
/2; C
= 100µA
LOAD
LOAD
A
A
= 0.1µF
= 0.1µF
= 25°C
= 25°C
–0.40
Min.
0.19
0.76
0.66
0.86
3.15
–0.2
–0.1
–0.7
–0.2
3.36
0.8
1.4
3.1
3.6
–7
–0.25
0.925
Typ.
0.21
0.73
0.93
3.25
–0.5
0.24
3.50
180
500
1.0
2.0
1.0
3.7
4.0
85
10
–5
0
5
2
–0.10
Max.
0.23
–0.3
1.10
0.80
1.00
3.35
3.65
100
0.2
0.1
1.2
0.2
2.5
4.3
4.3
10
25
20
–3
1
1
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Unit
mA
mA
mA
µA
µA
µA
µA
µA
ns
ns
ns
ns
V
V
V
V
A
A
V
V
V
V
V
V
V
V