LED Driver. FP7189 Datasheet

FP7189 Driver. Datasheet pdf. Equivalent


Part FP7189
Description LED Driver
Feature FP7189 LED Driver with Average-Mode Constant Current Control General Description The FP7189 is an a.
Manufacture Feeling Technology
Datasheet
Download FP7189 Datasheet


FP7189 LED Driver with Average-Mode Constant Current Control FP7189 Datasheet
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FP7189
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



FP7189
Function Block Diagram
Internal
supply
POR
UVLO
DIM
200mV/250mV
Average Current
Logic Control
DIM to CS ratio=0.167
VIN
Regulator
FP7189
VDD
GATE
GND
LEB
550mV
SCP
TOFF Timer
OTP
CS NC NC
Pin Descriptions
SOP-8L
Top View
VIN 1
8 NC
CS 2
7 DIM
GND 3
6 VDD
GATE 4
5 NC
Name
VIN
CS
GND
GATE
NC
VDD
DIM
NC
No. I / O
Description
1
P
This pin is the input of an 8 - 100V linear
regulator.
This pin is the current sense pin used to
2 I sense the FET current by means of an
external sense resistor.
3 P Ground return for all internal circuitry.
4
O
This pin is the output GATE driver for an
external N-channel power MOSFET.
5 - No connect.
6
P
This is the power supply pin for all internal
circuits.
7
I
This pin is the linear and PWM dimming input
of the IC.
8 - No connect.
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
2/13







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