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PDF FAN7601B Data sheet ( Hoja de datos )
| Número de pieza | FAN7601B | |
| Descripción | Green Current Mode PWM Controller | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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February 2009
FAN7601B
Green Current Mode PWM Controller
Features
Green Current Mode PWM Control
Low Operating Current: Maximum 4mA
Burst Mode Operation
Internal High-Voltage Startup Switch
Under-Voltage Lockout (UVLO): 12V/8V
Latch Protection and Soft-Start Function
Over-Voltage Protection: 19V
Operating Frequency up to 300kHz
Maximum Duty Cycle: 95%
Applications
Offline Adapter Applications
Auxiliary Power Supplies
Related Resources
AN4129 — Green Current Mode PWM
Controller FAN7601
Description
The FAN7601B is a programmable frequency green
current mode PWM controller. It is specially designed for
the offline adapter applications and the auxiliary power
supplies that require high efficiency at light load and no
load. The internal high-voltage startup switch and burst
mode reduce the power loss.
FAN7601B includes protections, such as latch protection
and over-voltage protection. The latch protection can be
used for over-voltage protection, thermal protection, and
others. The soft-start prevents the output voltage
overshoot at startup.
Ordering Information
Part Number
Operating
Junction
Temperature
FAN7601BN
FAN7601BM
FAN7601BMX
FAN7601BG
FAN7601BGX
-40°C to +150°C
Top Mark
FAN7601B
7601B
7601B
7601B
7601B
Eco Status
RoHS
Package
8-DIP
8-SOP
8-SOP
10-SSOP
10-SSOP
Packing
Method
Rail
Rail
Tape & Reel
Rail
Tape & Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2008 Fairchild Semiconductor Corporation
FAN7601B • Rev. 1.0.1
www.DataSheet.in
www.fairchildsemi.com
1 page  
Electrical Characteristics
TA=-25°C~125°C, VCC=14V, RT=9.5kΩ, CT=2.2nF unless otherwise specified.
Symbol
Parameter
Reference Section
VREF
Reference Output Voltage
ΔVREF1 Line Regulation
ΔVREF2 Load Regulation
Oscillator Section
fOSC Initial Accuracy
STV Voltage Stability
VOSC
Amplitude
PWM Section
VCS/FB1 CS/FB Threshold Voltage1
DMAX Maximum Duty Cycle
DMIN
Minimum Duty Cycle
Burst Mode Section
VCS/FB2
VCS/FB3
CS/FB Threshold Voltage2(1)
CS/FB Threshold Voltage3(1)
Soft-Start Section
ISS Soft-Start Current
VSL Soft-Start Limit Voltage(2)
Protection Section
VLATCH Latch Voltage
VOVP Over-Voltage Protection
UVLO Section
VtH Start Threshold Voltage
VtL Minimum Operating Voltage
Total Current Section
IOP Operating Supply Current
Output Section
VOL Low Output Voltage
VOH High Output Voltage
tr Rising Time(1)
tf Falling Time(1)
Startup Section
Conditions
IO=1mA
VCC=10V~18V
IO=1mA ~ 10mA
VCC=10V~18V
Vpin4 peak-to-peak
TA=25°C
Vpin3=GND
ISS=1μA
TA=25°C, IO=100mA
TA=25°C, IO=-100mA
TA=25°C, CI=1nF
TA=25°C, CI=1nF
Min. Typ. Max. Unit
4.85 5.00 5.15 V
10 20 mV
20 30 mV
90 100 110 kHz
1.0 1.5 %
1.25 V
0.9 1.0 1.1
V
92 95 98 %
0%
0.77 0.97 1.17
0.7 0.9 1.1
V
V
9 12 15 μA
1.2 1.5 1.8 V
2.25 2.50 2.75
18 19 20
V
V
11 12 13 V
7 8 9V
3 4 mA
2.0 2.5
11.5 12.0 14.0
45 150
35 150
V
V
ns
ns
Istr VSTR Startup Current
VSTR=30V, TA=25°C
0.5 1.0 1.5 mA
Notes:
1. These parameters, although guaranteed, are not 100% tested in production.
2. It is recommended to connect a 1MΩ resistor between the Latch/SS pin and GND to prevent abnormal operation
of the latch protection by noise coupling.
© 2008 Fairchild Semiconductor Corporation
FAN7601B • Rev.1.0.1
www.DataSheet.in
5
www.fairchildsemi.com
5 Page 
© 2008 Fairchild Semiconductor Corporation
FAN7601B • Rev.1.0.1
www.DataSheet.in
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet FAN7601B.PDF ] | |
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