Document
Universal High-Voltage LED Driver
TECHNICAL DATA
IL9910A/B/C
Description
The IL9910 is a PWM high-efficiency LED driver control IC. The IC is purposed for control of LED lighting as source of constant current
Features
• 8V to 450V input range • Maximum external consumption current on VDD pin IDD(ext) 1 mA • Operating temperature range -40oC ~ +85oC a Applications from a few mA to more than 1A Output • Brightness control for LED string from one to hundreds of diodes • PWM Low-Frequency LED Dimming
Application
•DC/DC or AC/DC LED Driver application •RGB Backlighting LED Driver •Back Lighting or Flat Panel Display •General purpose constant current source •Signage and Decorative LED Lighting •Automotive •Chargers
D- suffix SO-8 case
N- suffix DIP-8 case
DH suffix 16 SO-16 case
01
ORDERING INFORMATION
Device IL9910AD IL9910AN IL9910ADH IL9910BD IL9910BN IL9910BDH IL9910CD IL9910CN IL9910CDH
Vcs 225~242mV 242~257mV 257~275mV
Package Operating Temperature Range
SOP 8
DIP 8
SOP 16
SOP 8
DIP 8 SOP 16
TA = - 40 ~ 85℃
SOP 8
DIP 8
SOP 16
1 November 2010, Ver. 02
IL9910A/B/C
IL9910DН pin diagram
VIN 01 NC 02 NC 03 CS 04 GND 05 NC 06 NC 07 GATE 08
16 NC 15 NC 14 ROSC 13 LD 12 VDD 11 NC 10 NC 09 PWM_D
IL9910D, IL9910N pin diagram
VIN 01 CS 02 GND 03 GATE 04
08 ROSC 07 LD 06 VDD 05 PWM_D
Pin Description Table
Pin number
IL9910D IL9910N
IL9910DH 1)
Symbol
Function
01 01 VIN Supply voltage input
02 04 CS LED control current input
03 05 GND Common pin
04 08 GATE Output of control of external MOSFET 05 09 PWM_D Input of PWM Low-Frequency LED Dimming 2)
06 12 VDD Pin of internally adjusted supply voltage 3) 07 13 LD Linear Dimming input
08 14 ROSC Input of internal oscillator control
1) Pins 02, 03, 06, 07, 10, 11, 15, 16 of IL9910DH are not used. 2) Can be used as enable input. 3) Can be used as supply voltage output for external circuit .
November 2010, Ver. 02
2
Universal input
8V - 450V VDC 85 -265 VAC rectified
Block Diagram and Typical Application Circuit
IL9910A/B/C
Set LED Current
ABSOLUTE MAXIMUM RATINGS (Unless otherwise stated, Ta=25°C, GND=0V)
Symbol
VIN VDDMAX
VCS VLD VPWM_D VGATE ТA
Parameter
Input voltage Maximum voltage applied to VDD pin CS pin voltage LD pin voltage PWM_D GATE pin voltage Ambient temperature
Value Min Max -0.5 470
- 13.5 -0.3 VDD + 0.3 -0.3 VDD – 0.3 -0.3 VDD – 0.3 -0.3 VDD + 0.3 -60 125
Unit
V V V V V V oC
RECOMMENDED OPERATING RANGE (Unless otherwise stated, Ta= -40 to +85°C, GND=0V)
Symbol
VIN ТA
Parameter
Input voltage Ambient operating temperature
Value Min Max
8 450 -40 85
Unit
V oC
November 2010, Ver. 02
3
IL9910A/B/C
ELECTRICAL CHARACTERISTICS (Т A =-40 ~ 85°C)
Symbol VDD IDD(ext)
UVLO VEN(hi) REN VCS(hi)
fOSC
IINsd VGATE(hi)
VGATE(lo)
TBLANK TDELAY TRISE TFALL
Parameter
Testing mode
Internally regulated VIN = 8 V
voltage
VIN = 450 V
VDD pin current
VIN = 8 V
available for external VIN = 100 V
circuit
Under voltage lockout VIN rise
threshold
from 5 to 8 V
Enable high level output voltage
VIN = 8 V VIN = 450 V
PWM_D pin pull-down VEN = 5 V resistance
Current sense pull-in VIN = 8 V threshold Voltage
A B C
Internal oscillator frequency
VIN = 8 V ROSC = 1 MOhm
VIN = 8 V ROSC = 226 kOhm
Shutdown mode
PWM_D pin is
consumption current connected to GND,
VIN = 8 V
Gate high level output PWM_D pin is
voltage
connected to VDD,
VIN = 8 V
VIN = 450 V
Gate low level output voltage
PWM_D pin is connected to GND, VIN = 8 V VIN = 450 V
Current sense blanking interval
VCS = 0.55VLD, VLD = VDD
Delay from CS trip to Vin = 12V,
VLD
GATE lo
= 0.15, VCS = 0 to
0.22V after TBLANK
GATE output rise time CGATE = 500pF
GATE output fall time CGATE = 500pF
Value Min Max 7.0 8.0
- 1.0
6.20 6.95 2.4 50 150 225 275 225 242 242 257 257 275 20 30 80 120
- 1.0
6.7 -
- 0.3
150 280 300
50 50
Ambient
temperature, Unit °С
25 10
V
mA
V V kOhm mV
kHz
mA V
V
ns ns ns ns
November 2010, Ver. 02
4
IL9910A/B/C
Application Information
AC/DC Off-Line Applications
The IL9910 is a low-cost off-line buck, boost or buck- boost converter control IC specifically designed or driving multi-LED stings or arrays. It can be operated from either universal AC line or any DC voltage between 8-450V. Optionally, a passive power factor correction circuit can be used in order to pass the AC harmonic limits set by EN6100-3-2 Class C for lighting equipment having input power less than 25W. The IL9910 can drive up to hundreds of High-Brightness (HB) LEDs or multiple strings of HB LEDs. The LED arrays can be configured as a series or series/parallel connection. The IL9910 regulates constant current that ensures controlled brightness and spectrum of the LEDs, and extends their lifetime. The IL9910 features an enable pin (PWM_D) that allows PWM control of brightness.
The IL9910 can also control brightness of LEDs by programming continuous output current of the LED driver (so-called linear dimming) when a control voltage is applied to the LD pin.
The.