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A6213 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 A6213
部品説明 Constant-Current 3-Ampere PWM Dimmable Buck Regulator LED Driver
メーカ Allegro
ロゴ Allegro ロゴ 



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A6213 Datasheet, A6213 PDF,ピン配置, 機能
A6213
Automotive Grade, Constant-Current 3-Ampere
PWM Dimmable Buck Regulator LED Driver
Features and Benefits
• AEC-Q100 qualified
• Supply voltage 6 to 48 V
• True average output current control
• 3.0 A maximum output over operating temperature range
• Cycle-by-cycle current limit
• Integrated MOSFET switch
• Dimming via direct logic input or power supply voltage
• Internal control loop compensation
• Undervoltage lockout (UVLO) and thermal shutdown
protection
• Low power shutdown (1 μA typical)
• Robust protection against:
Adjacent pin-to-pin short
Pin-to-GND short
Component open/short faults
Package 8-pin SOICN with exposed
thermal pad (suffix LJ):
Not to scale
Description
The A6213 is a single IC switching regulator that provides
constant-current output to drive high-power LEDs. It integrates
a high-side N-channel DMOS switch for DC-to-DC step- down
(buck) conversion. A true average current is output using a
cycle-by-cycle, controlled on-time method.
Output current is user-selectable by an external current sense
resistor. Output voltage is automatically adjusted to drive
various numbers of LEDs in a single string. This ensures the
optimal system efficiency.
LED dimming is accomplished by a direct logic input pulse
width modulation (PWM) signal at the enable pin.
The device is provided in a compact 8-pin narrow SOIC package
(suffix LJ) with exposed pad for enhanced thermal dissipation.
It is lead (Pb) free, with 100% matte tin leadframe plating.
Applications:
Automotive lighting
• Daytime running lights
• Front and rear fog lights
• Turn/stop lights
• Map light
• Dimmable interior lights
Typical Application Circuit
VIN (6 to 48 V)
GND C1
EN
R1
Enable/PWM Dimming
(100 Hz to 2 kHz)
1
2
VIN
TON
A6213 SW
BOOT
8
7
3 EN
GND 6
4 CS
VCC 5
C4
C5
L1
D1
LED+
LED
RSENSE
Two different methods of achieving PWM dimming of LED current are shown
A6213-DS

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