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PDF FP7151 Data sheet ( Hoja de datos )
| Número de pieza | FP7151 | |
| Descripción | 700mA LED Driver | |
| Fabricantes | Feeling Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FP7151 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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700mA LED Driver with Internal Switch
FP7151
General Description
The FP7151 is a continuous mode inductive step down converter. It can driving single or multiple
series connected LEDs. The FP7151 includes the output switch and a high-side output current sensing
circuit, which use an external resistor to set the average output current. Output current can also be
adjusted by applying an external signal to the ‘ADJ’ pin. The ADJ pin will accept either a DC voltage or
a PWM waveform. The PWM filter components are contained within the chip. Applying a voltage under
0.2V to the ADJ pin will turn off the output.
The FP7151 is available in the SOT23-5L package and provides space-saving PCB for the
application fields.
Features
700mA Output Current
Internal 0.7Ω 26V Power MOSFET Switch
Wide 7 to 26V Operating Input Range
20μA Shutdown Mode Current
Typical 4% Output Current Accuracy
Signal pin ON / OFF and Brightness Control
Adjustable Soft-Start
Up to 95% Efficiency
Up to 1MHz Switching Frequency
Internal Dimming Filter
Package: SOT23-5L
Applications
Low Voltage Halogen replacement LEDs
LED back-up lighting
Typical Application Circuit
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.63
1/13
1 page  
FP7151
DC Electrical Characteristics VIN=12V, TA=25℃ (unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ. Max.
Input voltage
Internal Regulator Start-up
Threshold
VIN
VSU VIN Rising
7 26
4.8
Quiescent Supply Current
with Output off
IINQoff ADJ pin Grounded
15 20
Quiescent Supply Current
with Output Switching
IINQon ADJ pin Floating
f=250kHz
400 800
Mean Current Sense Threshold
Voltage (Defines LED Current
Setting Accuracy)
Sense Threshold Hysteresis
Measured on ISENSE pin
VSENSE with Respect to VIN
VADJ =1.25V
VSENSEHYS
95 100 105
±15
ISENSE pin Input Current
ISENSE VSENSE =VIN -0.1
3 10
Internal Reference Voltage
Temperature Coefficient of VREF
External Control Voltage Range
on ADJ pin for Dc Brightness
Control (1)
VREF Measured on ADJ pin with
pin Floating
△VREF / △T
VADJ
1.21
0.3
1.25
50
1.29
2.5
DC Voltage on ADJ pin to Switch
Device from Active (on) State to VADJoff VADJ Falling
0.15 0.2 0.25
Quiescent (off) State
DC Voltage on ADJ pin to Switch
Device from Quiescent (off) state
to Active (on) State
VADJon VADJ Rising
0.2 0.25 0.3
Resistance Between ADJ pin and
VREF
Continuous LX Switch Current
RADJ
ILXmean
135 250
0.7
LX Switch ‘On’ Resistance
RLX
0.7 0.9
LX Switch Leakage Current
ILX (leak)
1
Unit
V
V
µA
µA
mV
%
µA
V
ppm/℃
V
V
V
kΩ
A
Ω
µA
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.63
5/13
5 Page 
FP7151
PC Board Layout Checklist
1. the capacitor C1 has to be placed as close as possible to VIN
2. The sense resistor RS has to be placed as close as possible to VIN and ISENSE
3. The D1 anode, the SW pin and the inductor L1 have to be placed as close as possible to
avoid ringing
Suggested Layout
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.63
11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet FP7151.PDF ] | |
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