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PDF FL7701 Data sheet ( Hoja de datos )
| Número de pieza | FL7701 | |
| Descripción | Smart LED Lamp Driver IC | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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June 2013
FL7701
Smart LED Lamp Driver IC with PFC Function
Features
Digitally Implemented Active PFC Function
(No Additional Circuit Necessary for High PF)
Built-in HV Supplying Circuit: Self Biasing
Application Input Range: 80 VAC ~ 308 VAC
AOCP Function with Auto-Restart Mode
Built-in Over-Temperature Protection Function
Cycle-by-Cycle Current Limit
Current-Sense Pin Open Protection
Low Operating Current: 0.85 mA (Typical)
Under-Voltage Lockout with 5 V Hysteresis
Programmable Oscillation Frequency
Programmable LED Current
Analog Dimming Function
Soft-Start Function
Precise Internal Reference: ±3%
Applications
LED Lamp for Decorative Lighting
LED Lamp for Low-Power Lighting
Description
The FL7701 LED lamp driver is a simple IC with PFC
function. The special “adopted digital” technique of the
IC can automatically detect input voltage condition and
send an internal reference signal for achieving high
power factor. When AC input is applied to the IC, PFC
function is automatically enabled. Otherwise, when DC
input is applied to the IC, PFC function is automatically
disabled. The FL7701 does not need a bulk capacitor
(electrolytic capacitor) for supply rail stability, which can
significantly affect to LED lamp system.
Related Resources
Evaluation Board: FEBFL7701_L30U003A
Ordering Information
Part Number
Operating
Temperature Range
FL7701MX
-40°C to +125°C
Package
Packing Method
8-Lead, Small Outline Integrated Circuit (SOIC),
JEDEC MS-012, .150-inch Narrow Body
Tape & Reel
© 2011 Fairchild Semiconductor Corporation
FL7701 • Rev. 1.0.4
www.fairchildsemi.com
1 page  
Electrical Characteristics
Typical values are at TA = +25°C. Specifications to -40°C ~ 125°C are guaranteed by design based on final
characterization results.
Symbol
Parameter
VCC Bias Section
VCC VCC Regulator Output Voltage
VCCST+ UVLO Positive Going Threshold
VCCST- UVLO Negative Going Threshold
VCCHY UVLO Hysteresis
IHV HV Pin Current
IST Startup Current
Switching Section
Conditions
Min.
VHV=100 VDC
VCC Increasing
VCC Decreasing
VHV=100 VDC,
CL=150 pF, RT=Open
14.0
12
7
4
RT=5.95 kΩ
200
fOSC Operating Frequency
RT=87 kΩ
16
RT Open
40.5
tMIN Minimum On Time
DMAX
tLEB
Maximum Duty Cycle
Leading Edge Blanking Time(3)
VRT Voltage Reference of RT pin
Soft-Start Section
tss Soft-Start Time(3)
DC Mode
AC Mode
48
Reference Section
VCS1
VCS2
DC Mode
Internal Reference Voltage of CS Pin
AC Mode(3)
0.354
0.485
Protection Section
OVPVCC
VAOCP
tAOCP
tTSDH
tTSDHY
Over-Voltage Protection on VCC Pin
Abnormal OCP Level at CS Pin(3)
Abnormal Detection Time(3)
Thermal Shutdown Threshold(3)
Thermal Shutdown Threshold
Hysteresis(3)
17.7
140
Dimming Section
VADIM(ST+)
VADIM(ST-)
Analog Dimming Positive Going
Threshold(3)
Analog Dimming Negative Going
Threshold(3)
IAD Internal Current Source for ADIM Pin
3.15
9
Note:
3. These parameters, although guaranteed, are not 100% tested in production.
Typ.
15.5
13
8
5
0.85
120
250
20
45.0
400
50
350
1.5
60
7
0.365
0.500
18.7
2.5
70
150
50
3.50
0.50
12
Max. Unit
17.0 V
14 V
9V
6V
1.10 mA
150 μA
300 kHz
24 kHz
49.5 kHz
ns
%
ns
V
72 ms
Periods
0.376
0.515
V
19.7 V
V
ns
°C
°C
3.85 V
0.75 V
15 μA
© 2011 Fairchild Semiconductor Corporation
FL7701 • Rev. 1.0.4
5
www.fairchildsemi.com
5 Page 
Typical Characteristics
19.5
19.0
18.5
18.0
-40 -20
0 20 40 60 80 100 120
Temperature [°C]
Figure 24. OVPVCC vs. Temperature
15
14
13
12
11
10
9
-40 -20
0 20 40 60 80 100 120
Temperature [°C]
Figure 25. . IAD vs. Temperature
© 2011 Fairchild Semiconductor Corporation
FL7701 • Rev. 1.0.4
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet FL7701.PDF ] | |
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