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LED DRIVER. IS31LT3360 Datasheet

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LED DRIVER. IS31LT3360 Datasheet






IS31LT3360 DRIVER. Datasheet pdf. Equivalent




IS31LT3360 DRIVER. Datasheet pdf. Equivalent





Part

IS31LT3360

Description

40V/1.2A LED DRIVER



Feature


IS31LT3360 40V/1.2A LED DRIVER WITH INTE RNAL SWITCH GENERAL DESCRIPTION The IS3 1LT3360 is a continuous mode inductive step-down converter, designed for drivi ng a single LED or multiple series conn ected LEDs efficiently from a voltage s ource higher than the LED voltage. The chip operates from an input supply betw een 6V and 40V and provides an external ly adjustable outp.
Manufacture

ISSI

Datasheet
Download IS31LT3360 Datasheet


ISSI IS31LT3360

IS31LT3360; ut current of up to1.2A. The IS31LT3360 includes an integrated output switch an d a high-side output current sensing ci rcuit, which uses an external resistor to set the nominal average output curre nt. Output current can be adjusted line arly by applying an external control si gnal to the ADJ pin. The ADJ pin will a ccept either a DC voltage or a PWM wave form. This will pr.


ISSI IS31LT3360

ovide either a continuous or a gated out put current. Applying a voltage less th an 0.2V to the ADJ pin turns the output off and switches the chip into a low c urrent standby state. The chip is assem bled in SOT89-5 package. OCTOBER 2011 F EATURES Up to 1.2A output current Hig h efficiency (up to 98% ) Wide input v oltage range: 6V to 40V Internal 40V p ower switch Simpl.


ISSI IS31LT3360

e low parts count Typical 3% output cur rent accuracy Single pin on/off and br ightness control using DC voltage or PW M Up to 1MHz switching frequency Inhe rent LED open-circuit/short-circuit pro tection Thermal shutdown protection ci rcuitry Typical 1200:1 dimming ratio APPLICATIONS LED MR16, MR11 spotlight LED street light PAR light Other LE D lighting APPLICAT.

Part

IS31LT3360

Description

40V/1.2A LED DRIVER



Feature


IS31LT3360 40V/1.2A LED DRIVER WITH INTE RNAL SWITCH GENERAL DESCRIPTION The IS3 1LT3360 is a continuous mode inductive step-down converter, designed for drivi ng a single LED or multiple series conn ected LEDs efficiently from a voltage s ource higher than the LED voltage. The chip operates from an input supply betw een 6V and 40V and provides an external ly adjustable outp.
Manufacture

ISSI

Datasheet
Download IS31LT3360 Datasheet




 IS31LT3360
IS31LT3360
40V/1.2A LED DRIVER WITH INTERNAL SWITCH
January 2014
GENERAL DESCRIPTION
The IS31LT3360 is a continuous mode inductive
step-down converter, designed for driving a single
LED or multiple series connected LEDs efficiently
from a voltage source higher than the LED voltage.
The chip operates from an input supply between 6V
and 40V and provides an externally adjustable output
current of up to 1.2A.
The IS31LT3360 includes an integrated output
switch and a high-side output current sensing circuit,
which uses an external resistor to set the nominal
average output current.
Output current can be adjusted linearly by applying
an external control signal to the ADJ pin. The ADJ
pin will accept either a DC voltage or a PWM
waveform. This will provide either a continuous or a
gated output current.
Applying a voltage less than 0.2V to the ADJ pin
turns the output off and switches the chip into a low
current standby state.
The chip is assembled in SOT89-5 package. It
operates from 6V to 40V over two temperature
ranges of -40°C to +105°C and -40°C to +125°C.
FEATURES
Up to 1.2A output current
High efficiency (up to 98%)
Wide input voltage range: 6V ~ 40V
Internal 40V power switch
Simple low parts count
Typical 3% output current accuracy (-40°C to
+105°C, IS31LT3360-SDLS3-TR)
Typical 5% output current accuracy (-40°C to
+125°C, IS31LT3360-SDLS4-TR)
Single pin on/off and brightness control using
DC voltage or PWM
Up to 1MHz switching frequency
Inherent LED open-circuit/short-circuit
protection
Thermal shutdown protection circuitry
Up to 1200: 1 dimming ratio
APPLICATIONS
Automotive and avionic lighting
LED MR16, MR11 spot light
LED street light
PAR light
Industrial lighting
Refrigeration lights
Other LED lighting
APPLICATION CIRCUIT
Figure 1 Typical Application Circuit
Note: The capacitor, C2, can’t be removed. And it should be placed as close as possible to the VIN and GND pins, otherwise the
operation might be abnormal.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 12/22/2013
1




 IS31LT3360
IS31LT3360
PIN CONFIGURATION
Package
Pin Configuration
SOT89-5
LX
GND
ADJ
1
2
3
5 VIN
Thermal Pad
4 ISENSE
PIN DESCRIPTION
No. Pin
1 LX
2 GND
3 ADJ
4 ISENSE
5 VIN
Thermal Pad
Description
Drain of power switch.
Ground (0V).
Multi-function On/Off and brightness control pin:
* Leave floating for normal operation.(VADJ = VREF = 1.2V giving
nominal average output current IOUT(NOM) =0.1/RS )
* Drive to voltage below 0.2V to turn off output current
* Drive with DC voltage (0.3V<VADJ <1.2V) to adjust output
current from 25% to 100% of IOUT_NOM
* Drive with PWM signal to adjust output current.
* When driving the ADJ pin above 1.2V, the current will be
clamped to 100% brightness automatically.
Connect resistor RS from this pin to VIN to define nominal
average output current IOUT_NOM =0.1/RS
Input voltage (6V ~ 40V). Decouple to ground with 0.1μF X7R
ceramic capacitor as close to device as possible.
Connect to GND.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 12/22/2013
2




 IS31LT3360
IS31LT3360
ORDERING INFORMATION
Industrial Range: -40°C to +105°C
Order Part No.
Package
IS31LT3360-SDLS3-TR
SOT89-5, Lead-free
QTY/Reel
2500
Industrial Range: -40°C to +125°C
Order Part No.
Package
IS31LT3360-SDLS4-TR
SOT89-5, Lead-free
QTY/Reel
2500
Copyright © 2014 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any 
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
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 12/22/2013
3



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