Datasheet > A8515

A8515

更新时间： 2022-06-05 22:00:32

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器显示器
页数	文件大小	规格书
34页	1183K
描述
The A8515 is a multi-output white LED (WLED) driver for LCD backlighting in consumer and industrial displays.

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

A8515 数据手册

Wide Input Voltage Range, High Efficiency

Fault Tolerant LED Driver

A8515

ELECTRICAL CHARACTERISTICS¹(continued) Valid at V_IN= 16 V, T_A= 25°C, indicates specifications guaranteed by design

and characterization over the full operating temperature range with T_A= T_J= –40°C to 105°C; unless otherwise noted

Characteristics

Oscillator Frequency

Symbol

Test Conditions

Min.

Typ.²

Max.

Unit

R_FSET= 10 kΩ

1.8

−

2.2

−

MHz

kHz

Oscillator Frequency

f_SW

R_FSET= 20 kΩ

R_FSET= 35.6 kΩ

−

580

1.00

−

FSET/SYNC Pin Voltage

FSET Frequency Range

Synchronization

V_FSET

f_FSET

R_FSET= 10 kΩ

−

580

2500

kHz

Synchronized PWM Frequency

f_SWSYNC

580

150

−

2300

kHz

Synchronization Input

Minimum Off-Time

t_PWSYNCOFF

−

Synchronization Input

Minimum On-Time

t_PWSYNCON

150

−

V_SYNC(H)FSET/SYNC pin, high level

V_SYNC(L)FSET/SYNC pin, low level

−

0.4

SYNC Input Logic Voltage

2.0

−

LED Current Sinks

LEDx Accuracy

Err_LED

ΔLEDx

V_LED

I_SET= 120 μA

−

0.5

LEDx Matching

LEDx Regulation Voltage

V_LED1= V_LED2, I_SET= 120 μA

I_SET= 120 μA

−

720

980

1.003

−

A/A

_SETto I_LEDxCurrent Gain

A_ISET

V_ISET

I_SET

960

−

1000

−

ISET Pin Voltage

Allowable ISET Current

125

μA

While LED sinks are in regulation, sensed

from LEDx pin to GND

V_LEDShort Detect

V_LEDSC

I_LEDSS

4.6

−

Current through each enabled LEDx pin

during soft start

Soft Start LEDx Current

−

3.2

Measured while EN/PWM = low, during

dimming control and internal references

are powered-on (exceeding t_PWMLresults in

shutdown)

Maximum PWM Dimming

Until Off-Time

f_SW

cycles

t_PWML

−

32,750

−

Minimum PWM On-Time

t_PWMH

First cycle when powering-up device

−

0.75

0.5

μs

Time between PWM enable and LED current

reaching 90% of maximum

EN/PWM High to LED-On Delay

t_dPWM(on)

Time between PWM enable going low and

LED current reaching 10% of maximum

EN/PWM Low to LED-Off Delay

t_dPWM(off)

−

500

GATE Pin

Gate Pin Sink Current

Gate Fault Shutdown

I_GSINK

V_GS= 0 V with respect to V_IN

−

−104

−

μA

μs

t_GFAULT

−

Gate to source voltage measured when gate

is on

Gate Voltage

V_GS

−

-6.7

−

Continued on the next page…

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

1...3 4 567 8 9...34

下载PDF

与A8515相关器件

型号	品牌	描述	获取价格	数据表
A8515GLPTR-T	ALLEGRO	The A8515 is a multi-output white LED (WLED) driver for LCD backlighting in consumer and i	获取价格
A8516	ALLEGRO	The A8516 is a multi-output WLED/RGB driver for backlighting LCD monitors and televisions.	获取价格
A8516ELBTR-T	ALLEGRO	The A8516 is a multi-output WLED/RGB driver for backlighting LCD monitors and televisions.	获取价格
A8516ELPTR-T	ALLEGRO	The A8516 is a multi-output WLED/RGB driver for backlighting LCD monitors and televisions.	获取价格
A8517	ALLEGRO	Extensive diagnostics and fault reporting	获取价格
A8517KLPTR-T	ALLEGRO	Extensive diagnostics and fault reporting	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

A8515

A8515 数据手册

与A8515相关器件

与A8515相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

A8515

A8515 数据手册

与A8515相关器件

与A8515相关文章

您还可以找

您在本页遇到什么问题？