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PDF FP7189 Data sheet ( Hoja de datos )

Número de pieza FP7189
Descripción LED Driver
Fabricantes Feeling Technology 
Logotipo Feeling Technology Logotipo



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No Preview Available ! FP7189 Hoja de datos, Descripción, Manual

FP7189
LED Driver with Average-Mode Constant Current Control
General Description
The FP7189 is an average current mode control LED driver IC operating in a constant off-time
mode. FP7189 does not produce a peak-to-average error, and therefore greatly improves accuracy,
line and load regulation of the LED current without any need for loop compensation or high-side
current sensing. The output LED current accuracy is ±2%.
The FP7189 can be powered from an 8.0 - 100V supply. A PWM dimming input is provided that
accepts an external control TTL compatible signal. The output current can be programmed by an
internal 250mV reference, or controlled externally through a 0.2 1.5V dimming input.
Features
Fast average current control
Internal 8 to 100V linear regulator
Linear and PWM dimming capability
Output short circuit protection with skip mode
Requires few external components for operation
Applications
DC/DC LED driver applications
LED street lighting
Back lighting of flat panel displays
General purpose constant current source
Signage and decorative LED lighting
Chargers
Typical Application Circuit
VIN
GND
VIN NC
FP7189 Dimming
CS DIM
GND
VDD
GATE
NC
LED+
LED-
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. 0.60
1/13

1 page




FP7189 pdf
FP7189
Recommended Operating Conditions
Parameter
Symbol
Conditions
Supply Voltage
VIN
Operating Temperature
Min.
8.5
-25
Typ.
Max.
100
85
Unit
V
°C
DC Electrical Characteristics (VIN=11V,TA = 25°C, unless otherwise noted)
Parameter
Symbol
Conditions
Min. Typ. Max.
Internal Regulator
Internally regulated voltage
Line regulation of VDD
Load regulation of VDD
VDD undervoltage lockout
threshold
VDD undervoltage lockout
hysteresis
VDD
VIN = 8V, IDD(ext)= 0, 500pF at
GATE;DIM = VDD
7.25
7.5
7.75
ΔVDD,line
VIN = 8 100V, IDD(ext)=0,
500pF at GATE;, DIM= VDD
0
- 1.0
ΔVDD,load
IDD(ext) = 0 0.6mA, 500pF at
GATE;DIM = VDD
0
100
UVLO VDD rising
5.75 6.0 6.25
ΔUVLO VDD falling
500
PWM Dimming
Unit
V
V
mV
V
mV
Pin DIM input low voltage
VEN(lo) VIN = 8 - 100V
0.1 V
Pin DIM input high voltage
VEN(hi) VIN = 8 - 100V
1.6
V
Average Current Sense Logic
Current sense reference voltage
VCS
0.245 0.25 0.255 mV
DIM-to-CS voltage ratio
DIM-to-CS voltage offset
CS threshold temp regulation #
AV(DIM)
AVDIM
(OFFSET)
Offset = VCS AV(DIM)VDIM
VDIM=1.2V
0.164 0.167
0
0.17
10
5
mV
mV
DIM input voltage, shutdown
VDIM(OFF)
200 mV
DIM input voltage, enable
VDIM(OFF)
250 mV
Current sense blanking interval
TBLANK
250 350 ns
Minimum on-time
TON(min) CS=VCS + 30mV
1000 ns
Short Circuit Protection
Hiccup threshold voltage
Current limit delay CS GATE #
VCS
TDELAY CS=VCS + 30mV
495 550 605 mV
150 ns
Short circuit hiccup time
THICCUP
450 550 650
us
Minimum on-time (short circuit)
Notes:
# Guaranteed by design
TON(min) CS=VDD
600 ns
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. 0.60
5/13

5 Page





FP7189 arduino
Suggested Layout
VIN
C1
LED
Load
L1
D1
VIA to GND
VIN NC
FP7189
CS DIM
GND
VDD
Q1
GATE
NC
GND
R1
FP7189
C2
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. 0.60
11/13

11 Page







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