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PDF FAN6753 Data sheet ( Hoja de datos )
| Número de pieza | FAN6753 | |
| Descripción | Highly Integrated Green-Mode PWM Controller | |
| Fabricantes | Fairchild Semiconductor | |
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July 2009
FAN6753
Highly Integrated Green-Mode PWM Controller
Features
High-Voltage Startup
Low Operating Current: 2.7mA
Adaptive Decreasing PWM Frequency to 22KHz
Built-in Full-Range Frequency Hopping to Reduce
EMI Emission
Fixed PWM Frequency: 65KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Synchronized Slope Compensation
Internal Auto-Recovery Open-Loop Protection
GATE Output Maximum Voltage Clamp: 18V
VDD Under-Voltage Lockout (UVLO)
VDD Over-Voltage Protection (OVP),
Auto Recovery / Latch for Option
Internal Auto-Recovery Sense Short-Circuit
Protection for Option
Constant Power Limit (Full AC Input Range)
www.DataSheet4IUn.tceormnal OTP Sensor with Hysteresis
Built-in 5ms Soft-Start Function
Built-in LATCH Pin Pull HIGH (> 5.2V)
Latch Function
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
Power Adapters
Open-Frame SMPS
Description
The highly integrated FAN6753 PWM controller
provides several features to enhance the performance
of flyback converters.
To minimize standby power consumption, a proprietary
adaptive green-mode function provides frequency
modulation at light-load conditions. To avoid acoustic-
noise problems, the minimum PWM frequency is set
above 22KHz. This green-mode function enables the
power supply to meet international power conservation
requirements. With the internal high-voltage startup
circuitry, the power loss due to bleeding resistors is also
eliminated. To further reduce power consumption,
FAN6753 is manufactured using the BiCMOS process,
which allows an operating current of only 2.7mA.
FAN6753 integrates a full-range frequency-hopping
function internally that helps reduce EMI emission of a
power supply with minimum line filters. Its built-in
synchronized slope compensation achieves stable
peak-current-mode control. The proprietary internal line
compensation ensures constant output power limit over
a wide AC input voltage range, from 90VAC to 264VAC.
FAN6753 provides many protection functions. In
addition to cycle-by-cycle current limiting, the internal
open-loop protection circuit ensures safety should an
open-loop or output short-circuit failure occur. PWM
output is disabled until VDD drops below the UVLO lower
limit, when the controller starts up again. As long as VDD
exceeds ~26V, the internal OVP circuit is triggered.
FAN6753 is available in an 8-pin SOP package.
Ordering Information
Part Number
FAN6753MY
Operating
Temperature Range
-40°C to +105°C
Eco Status
Package
Packing Method
Green
8-Lead, Small Outline Package Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FAN6753 • Rev. 1.0.1
www.fairchildsemi.com
1 page  
Electrical Characteristics
VDD=15V and TA=25°C unless otherwise noted.
Symbol
Parameter
Conditions
VDD Section
VOP Continuously Operating Voltage
VDD-ON Start Threshold Voltage
VDD-OFF Minimum Operating Voltage
IDD-ST
Startup Current
VDD-ON – 0.16V
IDD-OP Operating Supply Current
VDD=15V, GATE Open
IDD-OLP
VTH-OLP
Internal Sink Current
IDD-OLP Off Voltage
VTH-OLP+0.1V
VDD-OVP VDD Over-Voltage Protection
tD-VDDOVP VDD Over-Voltage Protection Debounce Time
HV Section
IHV Supply Current Drawn from HV Pin
IHV-LC Leakage Current after Startup
Oscillator Section
VAC=90V (VDC=120V),
VDD=0V
HV=500V,
VDD=VDD-OFF+1V
Min. Typ. Max. Units
22
14.5 15.5 16.5
8.5 9.5 10.5
30
2.7 3.7
30 60 90
6.5 7.5 8.0
25 26 27
75 125 200
V
V
V
µA
mA
µA
V
V
µs
2.0 3.5 5.0 mA
1 20 µA
fOSC Frequency in Nominal Mode
Center Frequency
Hopping Range
62 65 68
KHz
±3.7 ±4.2 ±4.7
tH-OP
Hopping Period
fOSC-G
fDV
www.DataSheet4UfD.Tcom
Green-Mode Frequency
Frequency Variation vs. VDD Deviation
Frequency Variation vs. Temperature
Deviation
PWM Frequency
VDD=11V to 22V
TA=-20 to 85°C
4.4 ms
18 22 26 KHz
5%
5%
Continued on the following page…
fOSC
fOSC-G
© 2009 Fairchild Semiconductor Corporation
FAN6753 • Rev. 1.0.1
VFB-G
VFB-N
VFB
Figure 5. VFB vs. PWM Frequency
5
www.fairchildsemi.com
5 Page 
Physical Dimensions
6.20
5.80
5.00
4.80
3.81
8
A
5
B
4.00
3.80
1.75
0.65
5.60
PIN ONE
INDICATOR
(0.33)
1
4
1.27
0.25 M C B A
1.27
LAND PATTERN RECOMMENDATION
0.25
0.10
1.75 MAX
www.DataSheet4U.com R0.10
R0.10
8°
0°
0.90
0.406
C
0.51
0.33
0.10 C
0.50
0.25
x
45°
GAGE PLANE
0.36
SEATING PLANE
(1.04)
DETAIL A
SCALE: 2:1
SEE DETAIL A
0.25
0.19
OPTION A - BEVEL EDGE
OPTION B - NO BEVEL EDGE
NOTES: UNLESS OTHERWISE SPECIFIED
A) THIS PACKAGE CONFORMS TO JEDEC
MS-012, VARIATION AA, ISSUE C,
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS.
D) LANDPATTERN STANDARD: SOIC127P600X175-8M.
E) DRAWING FILENAME: M08AREV13
Figure 19. 8-Pin Small Outline Package (SOP)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify
or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation
FAN6753 • Rev. 1.0.1
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet FAN6753.PDF ] | |
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