Datasheet > A8517KLPTR-T

A8517KLPTR-T

更新时间： 2022-02-26 13:30:29

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描述
Extensive diagnostics and fault reporting

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数据手册

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A8517KLPTR-T 数据手册

Wide Input Voltage, Fault Tolerant, Independently Controlled

Multi-Channel LED Driver with I²C interface

A8517

ELECTRICAL CHARACTERISTICS ^[1]: Valid at V_IN= 16 V , T_A= 25°C, EN = V_EN(H)

indicates speciﬁcations valid across

the full operating temperature range with T_A= T_J= –40°C to 125°C and with typical speciﬁcations at T_A= 25°C; unless oth-

erwise speciﬁed

Characteristic

INPUT VOLTAGE

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Input Voltage Range

VIN Pin UVLO Start

V_IN

Measured at the VIN pin

4.5

−

4.35

3.90

−

V_INUV(ON)V_INrising

V_INUV(OFF)V_INfalling

V_INUV(HYS)

VIN Pin UVLO Stop

VIN Pin UVLO Hysteresis

INPUT CURRENT

−

400

Measured at the VIN pin, EN = V

2 MHz no load

, f_SW=

EN(H)

Input Quiescent Current

I_Q

−

µA

Sum of VIN and INS pin currents,

V_IN= V_INS= 16 V, V_EN= 0 V

Input Sleep Supply Current

I_QSLEEP

3.5

10.0

EN (ENABLE) PIN

EN Input Logic Level – Low

4.5 V < V_IN< 36 V

−

1.5

−

0.4

−

V_EN(L)

V_EN(H)

R_ENPD

EN Input Logic Level – High

EN Internal Pull-Down Resistance

ERROR AMPLIFIER

Source Current

100

−

kΩ

I_EA(SRC)

V_COMP= 0.75 V, V_LEDx= 0.3 V

−

–200

+200

−

µA

Sink Current

I_EA(SINK)V_COMP=0.75 V. V_LEDx=1.5 V

R_COMPPDDuring startup and shutdown

COMP Pin Internal Pull-Down

Resistance

−

2000

−

Ω

OUTPUT OVERVOLTAGE AND UNDERVOLTAGE PROTECTION

V_OVPMINOVP register = xxx0 0000

7.5

8.5

Overvoltage Threshold

V_OVPMAXOVP register = xxx1 1111

V_OVPSTEP

−

1.0

0.49

2.5

800

0.1

−

Overvoltage Step Size

Undervoltage Threshold

V_UVPMINOVP register = xxx0 0000

V_UVPMAXOVP register = xxx1 1111

−

OVP Pin Input Impedance

OVP Leakage Current

R_OVP

−

kΩ

µA

V_OVP= 20 V, EN = V_EN(H)

V_OVP=16 V, EN = V_EN(L)

I_OVPLKG

−

Secondary Overvoltage Protection

V_OVP(sec)Measured at SW pin

−

Continued on the next page…

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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