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PDF FSQ311 Data sheet ( Hoja de datos )

Número de pieza FSQ311
Descripción (FSQxxx) Green Mode Fairchild Power Switch
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



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No Preview Available ! FSQ311 Hoja de datos, Descripción, Manual

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May 2007
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311
Green Mode Fairchild Power Switch (FPS™) for
Valley Switching Converter - Low EMI and High Efficiency
Features
„ Optimized for Valley Switching (VSC)
„ Low EMI through Variable Frequency Control and
Inherent Frequency Modulation
„ High-Efficiency through Minimum Voltage Switching
„ Narrow Frequency Variation Range over Wide Load
and Input Voltage Variation
„ Advanced Burst-Mode Operation for Low Standby
Power Consumption
„ Pulse-by-Pulse Current Limit
„ Various Protection Functions: Overload Protection
(OLP), Over-Voltage Protection (OVP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
„ Under-Voltage Lockout (UVLO) with Hysteresis
„ Internal Start-up Circuit
„ Internal High-Voltage SenseFET (650V)
„ Built-in Soft-Start (15ms)
Applications
„ Power Supply for DVP Player and DVD Recorder,
Set-Top Box
„ Adapter
„ Auxiliary Power Supply for PC, LCD TV, and PDP TV
Description
A Valley Switching Converter generally shows lower EMI
and higher power conversion efficiency than a
conventional hard-switched converter with a fixed
switching frequency. The FSQ-series is an integrated
Pulse-Width Modulation (PWM) controller and
SenseFET specifically designed for valley switching
operation with minimal external components. The PWM
controller includes an integrated fixed-frequency
oscillator, Under-Voltage Lockout, Leading Edge
Blanking (LEB), optimized gate driver, internal soft-start,
temperature-compensated precise current sources for
loop compensation, and self-protection circuitry.
Compared with discrete MOSFET and PWM controller
solutions, the FSQ-series reduces total cost, component
count, size and weight; while simultaneously increasing
efficiency, productivity, and system reliability. This device
provides a basic platform that is well suited for cost-
effective designs of valley switching fly-back converters.
Related Application Notes
„ AN-4137, AN-4141, AN-4147, AN-4150 (Flyback)
„ AN-4134 (Forward)
FPSTM is a trademark of Fairchild Semiconductor Corporation.
© 2006 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311 Rev. 1.0.4
www.fairchildsemi.com

1 page




FSQ311 pdf
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. TA = 25°C, unless otherwise specified.
Symbol
Characteristic
Min.
Max.
Unit
VSTR
VDS
VCC
VFB
VSync
Vstr Pin Voltage
Drain Pin Voltage
Supply Voltage
Feedback Voltage Range
Sync Pin Voltage Range
FSQ0365
500
650
-0.3
-0.3
20
9.0
9.0
12
V
V
V
V
V
IDM Drain Current Pulsed(6)
FSQ0265
FSQ0165
8
A
4
FSQ321/311
1.5
FSQ0365
230
EAS
Single Pulsed Avalanche Energy(7)
FSQ0265
FSQ0165
140
mJ
50
FSQ321/311
10
PD
TJ
TA
TSTG
ESD
Total Power Dissipation
Recommended Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature
Human Body Model(8)
Machine Model(8)
1.5
-40 Internally limited
-40 85
-55 150
CLASS1 C
CLASS B
W
°C
°C
°C
Notes:
6. Repetitive rating: Pulse width limited by maximum junction temperature.
7. L=51mH, starting TJ=25°C.
8. Meets JEDEC standards JESD22-A114 and JESD22-A115.
Thermal Impedance(9)
Symbol
Parameter
8-DIP
θJA(10)
θJC(11)
θJT(12)
Junction-to-Ambient Thermal Resistance
Junction-to-Case Thermal Resistance
Junction-to-Top Thermal Resistance
Notes:
9. All items are tested with the standards JESD 51-2 and 51-10 (DIP).
10. Free-standing, with no heat-sink, under natural convection.
11. Infinite cooling condition - refer to the SEMI G30-88.
12. Measured on the package top surface.
Value
80
20
35
Unit
°C/W
© 2006 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311 Rev. 1.0.4
5
www.fairchildsemi.com

5 Page





FSQ311 arduino
Typical Performance Characteristics (Continued)
These characteristic graphs are normalized at TA= 25°C.
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-25
0 25 50 75 100 125
Temperature [°C]
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-25
0
25 50 75 100 125
Temperature [°C]
Figure 16. Sync High Threshold Voltage (VSH) vs. TA
Figure 17. Sync Low Threshold Voltage (VSL) vs. TA
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-25
0 25 50 75 100 125
Temperature [°C]
Figure 18. Shutdown Feedback Voltage (VSD) vs. TA
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-25
0
25 50 75 100 125
Temperature [°C]
Figure 19. Over-Voltage Protection (VOP) vs. TA
© 2006 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311 Rev. 1.0.4
11
www.fairchildsemi.com

11 Page







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