ELM916DA Datasheet, PDF (1/6 Pages) ELM Technology Corporation – 450V LED controller

ELM916DA 450V LED controller
■General description
ELM916DA is high efficiency LED driver control IC, which uses fewer components and drives LED with
constant current. ELM916DA works in open loop and current mode, and can be programmed to operate in either
constant frequency or constant off-time mode. ELM916DA consists of an 8 to 450V linear regulator, which
makes working in wide input voltage range without external low voltage power supply Internal 0 to 100%
PWM dimming and 0 to 245mV linear dimming help to adjust LED luminance. ELM916DA is suitable for buck
LED drivers; it is capable of providing good stability response because of open loop current mode control and
with the controller, it is able to regulate output current without any compensation outstandingly.
■Features
• Open loop peak current controller
• Constant Current LED Driver
• LED string from one to hundreds of diodes
• Support linear and PWM dimming interface
• Requires few external components
• Buck system efficiency
: >90%
• Internal linear regulator
: 8 to 450V
• Constant off time function
: 50%
(when duty cycle is over)
• Package
: SOP-8
■Application
• DC/DC LED driver applications
• RGB backlighting LED driver
• General purpose constant current source
• Signage and decorative LED lighting
• Chargers
• Non-isolation LED bulb
■Maximum absolute ratings
Parameter
Symbol
Limit
Unit
VIN voltage power supply
Vin
500
V
VDD voltage
Vdd
LD voltage
PWMD voltage
Vld
Vpwmd
36
V
GATE voltage
Vgate
CS voltage
RT voltage
Vcs
Vrt
7
V
Power dissipation
Pd
630
mW
Operating ambient temperature
Top
-40 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
Caution: Permanent damage to the device may occur when ratings above maximum absolute ones are used.
■Selection guide
ELM916DA-N
Symbol
a
Package
b
Product version
c
Taping direction
* ^{Taping direction is one way.}
D: SOP-8
A
N: Refer to PKG file
ELM916 D A - N
↑↑ ↑
ab c
6- 1
Rev.1.4