IS31LT3135-V2GRLS2-TR ISSI, IS31LT3135-V2GRLS2-TR Datasheet

IS31LT3135-V2GRLS2-TR

Manufacturer Part Number

IS31LT3135-V2GRLS2-TR

Description

LED Lighting Drivers Main/sub dual-Ch LED Drvr 1.19V-1.26V

Manufacturer

ISSI

Datasheet

1.IS31LT3135-V2GRLS2-TR.pdf (6 pages)

Specifications of IS31LT3135-V2GRLS2-TR

Input Voltage

2.7 V to 5.5 V

Output Current

200 mA

Mounting Style

SMD/SMT

Package / Case

SOP-8

Factory Pack Quantity

2500

Current page: 1 of 6
Download datasheet (216Kb)

IS31LT3135

MAIN/SUB DUAL-CHANNEL LED DRIVER

GENERAL DESCRIPTION

IS31LT3135 is a main/sub dual-channel LED driver.

When the main channel works，it is a constant current

source driving the main LED and the current is set by

an external resistor connected to the I

only 0.1v dropout voltage for 200mA output current.

When the sub-channel works, the chip will pull down

the sub LED’s cathode to ground.

Normally there is only one channel on, the main

channel and the sub channel can switch between each

other. Sweeping power supply from high voltage to low

voltage, main channel switches to sub-channel while

UV pin is below the undervoltage threshold 1.17V

(IS31LT3135-V1 typical) or 1.23V (IS31LT3135-V2

typical). Sweeping power supply from low voltage to

high voltage, the sub-channel switches to the main

channel while UV pin is 80mV (typical) higher than the

undervoltage threshold. Additionally, the main channel

has short protection function, when the main LED is

shorted，the chip will switch to sub-channel

automatically.

TYPICAL APPLICATION CIRCUIT

Integrated Silicon Solution, Inc. — www.issi.com

Rev.A, 11/08/2011

time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are

advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.

Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the

product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not

authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:

a.) the risk of injury or damage has been minimized;

b.) the user assume all such risks; and

c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances

SET

pin. It needs

IS31LT3135

Figure 1

FEATURES



APPLICATIONS



Power supply undervoltage detect

Main channel short protection

Over-temperature protection

Input voltage range: 2.7V~5.5V

Main and sub-channel current set by external

resistor

Main channel Vdp=0.1V

Low quiescent current

Assembled in SOP-8 package

Miner lamp

Other LED lighting

November 2011

Related parts for IS31LT3135-V2GRLS2-TR

IS31LT3135-V2GRLS2-TR Summary of contents

Page 1

... IS31LT3135 MAIN/SUB DUAL-CHANNEL LED DRIVER GENERAL DESCRIPTION IS31LT3135 is a main/sub dual-channel LED driver. When the main channel works， constant current source driving the main LED and the current is set by an external resistor connected to the I only 0.1v dropout voltage for 200mA output current. ...

Page 2

... Connect to the cathode of sub LED NC 4，5 Not connected ORDERING INFORMATION Industrial Range: -40°C to +85°C Order Part No. Package IS31LT3135-V1GRLS2-TR SOP-8, Lead-free IS31LT3135-V1GRLS2-TR SOP-8, Lead-free Integrated Silicon Solution, Inc. — www.issi.com Rev.A, 11/08/2011 QTY/Reel V UV 2500 1.13V~1.21V 2500 1.19V~1.26V ...

Page 3

... Vcc = 2.7V ~ 5.5V，Vmain=0.5V Rset=47K,Iout=204mA Vcc=2.7V~5.5V Switch from main-LED to IS31LT3135-V1 1.13 sub-LED when VUV sweeps from high IS31LT3135-V2 1.19 voltage to low voltage Switch from sub-LED to main-LED when VUV sweeps from low voltage to high voltage(Upper threshold); Switch from main-LED to sub-LED when VUV sweeps from high voltage ...

Page 4

... IS31LT3135 TYPICAL OPERATING CONDITION 1.2 1.19 1.18 1.17 1.16 1.15 10 Figure 2 Iset pin voltage change with temperature 350 348 346 344 342 340 338 336 334 332 330 4 Figure 3 Main LED current change with power supply Integrated Silicon Solution, Inc. — www.issi.com Rev.A, 11/08/2011 ...

Page 5

... Sweeping power supply from high voltage to low voltage, the main channel switches to sub-channel while UV pin is below undervoltage threshold, 1.17V (IS31LT3135-V1 typical) or 1.23V (IS31LT3135-V2 typical). Sweeping power supply from low voltage to high voltage, the sub-channel switches to the main channel while UV pin is 80mV (typical) higher than the undervoltage threshold ...

Page 6

... IS31LT3135 PACKAGE INFORMATION Integrated Silicon Solution, Inc. — www.issi.com Rev.A, 11/08/2011 SOP-8 6 ...

Related keywords

IS31LT3135-V2GRLS2-TR datasheet
IS31LT3135-V2GRLS2-TR data sheet
IS31LT3135-V2GRLS2-TR pdf datasheet
IS31LT3135-V2GRLS2-TR component
IS31LT3135-V2GRLS2-TR part
IS31LT3135-V2GRLS2-TR distributor
IS31LT3135-V2GRLS2-TR RoHS
IS31LT3135-V2GRLS2-TR datasheet download