A6275EA 데이터 시트보기 (PDF) - Allegro MicroSystems

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A6275EA

8-Bit Serial Input Constant-Current Latched LED Driver

Allegro MicroSystems 

A6275

Serial-Input Constant-Current Latched LED Driver

with Open LED Detection and Dot Correction

ELECTRICAL CHARACTERISTICS at TA = +25°C, VDD = 5 V (unless otherwise noted).

Characteristic

Symbol Test Conditions

Supply Voltage Range

Undervoltage Lockout

Output Current

(any single output)

Output Current Matching

(difference between any

two outputs at same VCE)

Output Leakage Current

VDD

VDD(UV)

IO

∆IO

ICEX

Operating

VDD = 0 → 5 V

VCE = 0.7 V, REXT = 250 Ω

VCE = 0.7 V, REXT = 470 Ω

0.4 V ≤ VCE(A) = VCE(B) ≤ 0.7 V:

REXT = 250 Ω

REXT = 470 Ω

VOH = 15 V

Logic Input Voltage

SERIAL DATA OUT

Voltage

Input Resistance

VIH

VIL

VOL

IOL = 500 μA

VOH

IOH = -500 μA

RI

ENABLE Input, Pull Up

LATCH Input, Pull Down

Supply Current

IDD(OFF) REXT = open, VOE = 5 V

REXT = 470 Ω, VOE = 5 V

REXT = 250 Ω, VOE = 5 V

IDD(ON)

REXT = 470 Ω, VOE = 0 V

REXT = 250 Ω, VOE = 0 V

Typical Data is at VDD = 5 V and is for design information only.

Limits

Min. Typ. Max. Unit

4.5 5.0 5.5

V

3.4

–

4.0

V

64.2 75.5 86.8 mA

34.1 40.0 45.9 mA

– ±1.5 ±6.0 %

– ±1.5 ±6.0 %

–

1.0 5.0 μA

0.7VDD –

VDD

V

GND – 0.3VDD V

–

–

0.4

V

4.6

–

–

V

150 300 600 kΩ

100 200 400 kΩ

–

0.8 1.4 mA

3.5 6.0 8.0 mA

6.5 11 15 mA

5.0 10 14 mA

8.0 16 24 mA

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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