Datasheet > IS32LT3173

IS32LT3173

更新时间： 2024-11-12 01:19:55

品牌	Logo	应用领域
美国芯成 - ISSI		驱动
页数	文件大小	规格书
19页	459K
描述
10-TO-200MA CONSTANT-CURRENT LED DRIVER FOR AUTOMOTIVE

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IS32LT3173 数据手册

IS32LT3172/73

10-TO-200MA CONSTANT-CURRENT LED DRIVER FOR AUTOMOTIVE

Preliminary Information

July 2016

GENERAL DESCRIPTION

FEATURES

The IS32LT3172 and IS32LT3173 are adjustable

linear current devices with excellent temperature

stability. A single resistor is all that is required to set

the operating current from 10mA to 200mA. The

devices can operate from an input voltage from 2.5V

to 42V with a minimal voltage headroom of 1V

(typical). Designed with a low dropout voltage; the

device can drive LED strings close to the supply

voltage without switch capacitors or inductors.



Low-side current sink

- Current preset to 10mA

- Adjustable from 10mA to 200mA with external

resistor selection



Wide input voltage range from

- 2.5V to 42V (IS32LT3173)

- 5V to 42V (IS32LT3172)

with a low dropout of typical 1V

Up to 10kHz PWM input (IS32LT3173 only)

Protection features:

The IS32LT3172/73 simplifies designs by

providing a stable current without the additional

requirement of input or output capacitors,

inductors, FETs or diodes. The complete constant

current driver requires only a current set resistor

and a small PCB area making designs both

efficient and cost effective.



- 0.26%/K negative temperature coefficient at

high temp for thermal protection



Up to 1.8W power dissipation in a small SOP-8-

EP package



RoHS compliant (Pb-free) package

Automotive Grade:

The EN pin (3) of the IS32LT3172 can be tied to

Vbat or BCM PWM signal for high side dimming.

The EN Pin (3) of the IS32LT3173 can function as

the PWM signal input used for low side dimming.

- IS32LT3172 – AEC-Q100

- IS32LT3173 – AEC-Q100 (pending)

As a current sink it is ideal for LED lighting

applications or current limiter for power supplies.

APPLICATIONS

The device is provided in a lead (Pb) free, SOP-8-EP

package.



Automotive and avionic lighting

Architectural LED lighting

Channel letters for advertising, LED strips for

decorative lighting



Retail lighting in fridge, freezer case and

vending machines

Emergency lighting (e.g. steps lighting, exit way

sign etc.)

TYPICAL APPLICATION CIRCUIT

Figure 1 Typical Application Circuit

Integrated Silicon Solution, Inc. – www.issi.com

Rev. 0C, 07/01/2016

12 3 4 5 6 7...19

中文翻译

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与IS32LT3173相关器件

型号	品牌	获取价格	描述	数据表
IS32LT3173-GRLA3-EB	ISSI	获取价格	LED Driver
IS32LT3174-GRLA3-TR	ISSI	获取价格	LED Driver,
IS32LT3175N	ISSI	获取价格	SINGLE CHANNEL LINEAR LED DRIVER WITH FADE IN/OUT AND PWM DIMMING
IS32LT3175P	ISSI	获取价格	SINGLE CHANNEL LINEAR LED DRIVER WITH FADE IN/OUT AND PWM DIMMING
IS32LT3180-ZLA3-TR	ISSI	获取价格	LED Driver
IS32WV10008ALL-100B	ISSI	获取价格	Pseudo Static RAM, 1MX8, 100ns, CMOS, PBGA48, 6 X 8 MM, BGA-48
IS32WV10008ALL-100BI	ISSI	获取价格	Pseudo Static RAM, 1MX8, 100ns, CMOS, PBGA48, 6 X 8 MM, BGA-48
IS32WV10008ALL-100T	ISSI	获取价格	Pseudo Static RAM, 1MX8, 100ns, CMOS, PDSO44, TSOP2-44
IS32WV10008ALL-100TI	ISSI	获取价格	Pseudo Static RAM, 1MX8, 100ns, CMOS, PDSO44, TSOP2-44
IS32WV10008ALL-10B	ISSI	获取价格	SRAM

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