FAN6861 Datasheet, PDF (5/15 Pages) Fairchild Semiconductor – Low-Cost, Highly Integrated, Green-Mode PWM Controller for Peak Power Management

Electrical Characteristics
VDD = 15V and TA = 25°C, unless otherwise noted.
Symbol
Parameter
VDD Section
VDD-OP
VDD-ON
VDD-OFF
VDD-SCP
VDD-OVP
VDD-LH
IDD-ST
Continuously Operating Voltage
Turn-On Threshold Voltage
Turn-Off Voltage
Threshold Voltage for Output Short-Circuit
Protection (SCP)
VDD Over-Voltage Protection (Latch-Off)
Threshold Voltage for Latch-Off Release
Startup Current
IDD-OP
Normal Operating Supply Current
IDD-BM
Green-Mode Operating Supply Current
VDD-OVP
tD-VDDOVP
IDD-LH
VDD Over-Voltage Protection (Latch-Off)
VDD OVP Debounce Time
Latch-Off Holding Current
Feedback Input Section
AV
ZFB
VFBO
VFB-OLP
tD-OLP
tD-SCP
Input Voltage to Current Sense Attenuation
Input Impedance
FB Pin Open Voltage
Threshold Voltage for Open-loop Protection
Open-Loop Protection Delay Time
Short-Circuit Protection Delay Time
Current Sense Section
tPD
tLEB
VSTHFL
VSTHVA
VOCP
VSLOPE
tSS
tD-OCP
Delay to Output
Leading-Edge Blanking Time
Flat Threshold Voltage for Current Limit
Valley Threshold Voltage for Current Limit
OCP Trigger Level
Slope Compensation
Soft-Start Time
FB Pin Protection Delay Time for Peak
Loading
Test Condition Min. Typ. Max. Unit
VTH-ON – 0.16V
With 1nF Load on
Gate, VFB ≥ VFB-N
GATE Open,
VFB = VFB-G
VDD = 5V
24
V
16.5 17.5 18.5 V
8.5
9.5 10.5 V
VDD-OFF VDD-OFF VDD-OFF
+0.5 +1.0 +1.5
V
24
25
26
V
3
4
5
V
8
15 µA
3
4
mA
2.2 mA
24
25
26
V
100 170 240 µs
25
40
55 µA
At Green Mode
1/4.5 1/4.0 1/3.5 V/V
14
16
18 kΩ
5.0
5.2
5.4
V
4.3
4.6
4.9
V
700 780 860 ms
20
25
30 ms
Duty > 51%
Duty = 0%
Duty = DCYMAX
100 250 ns
270 360
ns
0.85 0.89 0.93 V
0.65 0.70 0.75 V
0.47 0.50 0.53 V
0.30 0.33 0.36 V
7.5 10.0 12.5 ms
700 780 860 ms
Continued on following page…
© 2009 Fairchild Semiconductor Corporation
FAN6861 • Rev. 1.0.1
5
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