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A6262 PDF даташит

Спецификация A6262 изготовлена ​​​​«Allegro MicroSystems» и имеет функцию, называемую «Automotive LED Array Driver».

Детали детали

Номер произв A6262
Описание Automotive LED Array Driver
Производители Allegro MicroSystems
логотип Allegro MicroSystems логотип 

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A6262 Даташит, Описание, Даташиты
www.DataSheet.co.kr
A6262
Automotive LED Array Driver
Features and Benefits
Total LED drive current up to 400 mA
Current shared equally up to 100 mA by up to 4 strings
6 to 50 V supply
Low dropout voltage
LED output short-to-ground and thermal protection
On/off toggle switch input
Enable input for PWM control
Current slew rate limit during PWM
Current set by reference resistor
Automotive K-temperature range version (–40°C to 150°C):
contact factory for availability
Applications:
Dome light, map light, space lighting,
mood lighting
Packages
10-pin MSOP with
exposed thermal pad
(suffix LY)
16-pin TSSOP with
exposed thermal pad
(suffix LP)
Not to scale
Description
TheA6262 is a linear, programmable current regulator providing
up to 100 mA from each of four outputs to drive arrays of high
brightness LEDs. The regulated LED current from each output,
accurate to 5%, is set by a single reference resistor. Current
matching in each string is better than 10% without the use of
ballast resistors. Driving LEDs with constant current ensures
safe operation with maximum possible light output.
Output control is provided by an enable input, giving direct
control for PWM applications, and by a debounced switch
input, proving an on/off toggle action.
For automotive applications, optimum performance is achieved
when driving 4 strings with 1 to 3 LEDs in each string, at a
total current of up to 100 mA in each string. Outputs can be
connected in parallel or left unused as required.
Short detection is provided to protect the LEDs and the A6262
during a short-to-ground at any LED output pin. The output
will automatically resume the regulated current when the short
is removed.
A temperature monitor is included to reduce the LED drive
current if the chip temperature exceeds an adjustable thermal
threshold.
The device packages are a 10-pin MSOP (LY) and a 16-pin
TSSOP (LP), both with exposed pad for enhanced thermal
dissipation. They are lead (Pb) free, with 100% matte tin
leadframe plating.
Typical Application Diagram
+
Automotive
12 V power net
PWM dimming
input from LCU
On/Off
VIN
A6262
EN
SW
IREF
THTH
LA1
LA2
LA3
LA4
GND
A6262-DS
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A6262 Даташит, Описание, Даташиты
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A6262
Automotive LED Array Driver
Selection Guide
Part Number
A6262KLPTR-T
Ambient Operating
Temperature, TA (°C)
–40 to 125
Packing
Contact factory
A6262KLYTR-T
–40 to 125
4000 pieces per 13-in. reel
Package
16-pinTSSOP with exposed thermal pad,
4.4 × 5 mm case
10-pin MSOP with exposed thermal pad
3 × 3 mm case
Absolute Maximum Ratings1
Characteristic
Load Supply Voltage
Pin EN
Pins LA[1:4]
Pins IREF, THTH, SW
Ambient Operating Temperature
Range2
Maximum Continuous Junction
Temperature
Transient Junction Temperature
Storage Temperature Range
ESD Rating, Human Body Model
ESD Rating, Charged Device Model
1With respect to GND.
2Limited by power dissipation.
Symbol
VIN
Notes
TA
TJ(max)
TtJ
Tstg
K temperature range
Over temperature event not exceeding 10 s, lifetime duration
not exceeding 10 h, guaranteed by design characterization
AEC Q100-002 all pins
AEC Q100-011 corner pins
AEC Q100-011 all other pins
Rating
–0.3 to 50
–0.3 to 50
–0.3 to 50
–0.3 to 6.5
–40 to 125
150
175
–55 to 150
2000
750
500
Unit
V
V
V
V
°C
°C
°C
°C
V
V
V
Thermal Characteristics*may require derating at maximum conditions, see application information
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance
(Junction to Ambient)
RθJA
LP package
LY package
On 4-layer PCB based on JEDEC standard
On 2-layer PCB with 3.8 in.2 of copper area each side
On 4-layer PCB based on JEDEC standard
On 2-layer PCB with 3 in.2 of copper area each side
Package Thermal Resistance
(Junction to Pad)
RθJP
*To be verified by characterization. Additional thermal information available on the Allegro® website.
Value Unit
34 ºC/W
43 ºC/W
48 ºC/W
85 ºC/W
2 ºC/W
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
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A6262 Даташит, Описание, Даташиты
www.DataSheet.co.kr
A6262
Automotive LED Array Driver
Functional Block Diagram
VBAT
SW
EN
THTH
IREF
RTH
RREF
VIN
DQ
Deglitch
CQ
R
Control
Logic
Current
Regulators
Temp
Comp
Temp
Monitor
Slew
Limit
Current
Reference
LA1
LA2
LA3
LA4
PAD
GND
Pin-out Diagrams
NC 1
NC 2
THTH 3
IREF 4
GND 5
LA1 6
LA2 7
NC 8
PAD
16 NC
15 NC
14 SW
13 EN
12 VIN
11 LA4
10 LA3
9 NC
LP Package
THTH 1
IREF 2
GND 3
LA1 4
LA2 5
PAD
10 SW
9 EN
8 VIN
7 LA4
6 LA3
LY Package
Terminal List Table
Number
Name
LP
LY
EN 13
9
SW 14
10
GND
5
3
IREF
4
2
LA1 6
4
LA2 7
5
LA3 10
6
LA4 11
7
NC
1,2,8,
9,15,16
PAD –
THTH
3
1
VIN 12
8
Function
Enable
Switch input
Ground reference
Current reference
LED anode (+) connection 1
LED anode (+) connection 2
LED anode (+) connection 3
LED anode (+) connection 4
No connection; connect to GND
Exposed thermal pad
Thermal threshold
Supply
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
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