A6260KLJTR-T Allegro Microsystems Inc, A6260KLJTR-T Datasheet

IC LED DRIVER AUTOMOTIVE 8-SOIC

A6260KLJTR-T

Manufacturer Part Number
A6260KLJTR-T
Description
IC LED DRIVER AUTOMOTIVE 8-SOIC
Manufacturer
Allegro Microsystems Inc
Type
Automotiver
Datasheet

Specifications of A6260KLJTR-T

Topology
Linear (LDO), PWM
Constant Current
Yes
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Automotive
Type - Secondary
High Brightness LED (HBLED)
Voltage - Supply
6 V ~ 40 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width) Exposed Pad, 8-eSOIC. 8-HSOIC
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
350mA
Internal Switch(s)
Yes
Led Driver Application
Automotive
No. Of Outputs
1
Output Current
367mA
Output Voltage
3V
Input Voltage
6V To 40V
Dimming Control Type
PWM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Frequency
-
Efficiency
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
620-1252-2
A6260KJPTR-T

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A6260KLJTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Features and Benefits
▪ Automotive grade
▪ LED drive current up to 350 mA
▪ 6 to 40 V supply
▪ Reverse battery protection
▪ Low drop-out voltage
▪ LED short circuit and thermal protection
▪ 10 μA maximum shutdown current
▪ PWM dimming control input
▪ Current slew rate limiting
Package: 8-pin SOIC with exposed
thermal pad (suffix LJ)
Not to scale
6260-DS, Rev. 4
12 V Power Net
Automotive
(–14 V min, 40 V max)
On-Off Control
PWM Dimming
High Brightness LED Current Regulator
7 to 20 V
and
Typical Application
EN
THTH
Description
The A6260 is a linear, programmable current regulator
providing up to 350 mA for driving high-brightness LEDs.
The LED current, accurate to 4%, is set by a single low-power
sense resistor. Driving LEDs with constant current ensures
safe operation with maximum possible light output.
For automotive applications, optimum performance is
achieved when driving between 1 and 3 LEDs at cur-
rents up to 350 mA.
The low dropout voltage of the A6260 allows a single white
LED to be driven safely, at full current, with a supply voltage
down to 6 V.
An enable input allows PWM dimming and can be used to
enable low-current sleep mode. The rate of change of current
during PWM switching is limited to reduce EMI.
Overcurrent detection is provided to protect the LEDs and
the A6260 during short-to-supply or short-to-ground at any
LED terminal.
The integrated temperature monitor can be used to reduce
the LED drive current if the chip temperature exceeds the
thermal limit.
The device is available in an 8-pin SOIC package with exposed
thermal pad (suffix LJ). The device is lead (Pb) free with 100%
matte-tin leadframe plating.
A6260
GND
VIN
SENSE
LSS
LA
LC
A6260

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A6260KLJTR-T Summary of contents

Page 1

Features and Benefits ▪ Automotive grade ▪ LED drive current up to 350 mA ▪ supply ▪ Reverse battery protection ▪ Low drop-out voltage ▪ LED short circuit and thermal protection ▪ 10 μA maximum shutdown ...

Page 2

... A6260 Selection Guide Part Number A6260KLJTR-T 3000 pieces per reel A6260SLJTR-T 3000 pieces per reel Absolute Maximum Ratings* Characteristic Load Supply Voltage EN Pin Voltage LA and LC Pins Voltage LSS Pin Voltage SENSE Pin Voltage THTH Pin Voltage Ambient Operating Temperature Range Junction Operating Temperature Range ...

Page 3

A6260 VBATT R TH Terminal List Table Number High Brightness LED Current Regulator Functional Block Diagram VIN Reg Control EN Logic THTH Temp Temp Comp Monitor Reference Slew Limit Generator GND Pin-out Diagram SENSE 1 8 LSS GND 2 7 ...

Page 4

A6260 ELECTRICAL CHARACTERISTICS valid at T Characteristics Supply and Reference 1 V Functional Operating Range IN V Quiescent Current IN V Shutdown Current IN Startup Time Current Regulation Maximum Current Sink Current Sink Current Sink Accuracy SENSE Reference Voltage Switch ...

Page 5

A6260 The A6260 is a linear current regulator that is designed to provide drive current and protection for series-connected, high bright- ness LEDs in automotive applications. It provides programmable current output at load voltages below the ...

Page 6

A6260 dedicated sense resistor, which determines its share of the current provided to the LED. LED Brightness Although the LED brightness can be controlled by changing the current (intensity) this may slightly affect the color or the color temperature of ...

Page 7

A6260 the short circuit is removed the short circuit source current, I pulls the voltage at the LC pin above V regulator are re-enabled. (figure 1c) In this condition, the current LC Short to Supply into the LC pin remains ...

Page 8

A6260 example, with R connected − 124 124 THTH R Figure 3 shows how the nominal value of the thermal monitor activation temperature varies with the ...

Page 9

A6260 Automotive VIN 12V Power Net PWM Dimming and EN On-Off Control THTH SENSE GND Ground (a) Basic circuit with PWM Automotive VIN 12 V Power Net EN THTH SENSE GND Ground (c) Simple switched supply (lamp replacement) Automotive 12 ...

Page 10

A6260 Package LJ 8-Pin SOICN with Exposed Thermal Pad 8 2.41 NOM 0.10 C 0.51 0.31 1.27 BSC Copyright ©2007-2009, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. patents or U.S. ...

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