Datasheet > LED2001PHR

LED2001PHR

更新时间： 2024-09-15 01:17:23

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
42页	2433K
描述
4 A monolithic step-down current source with synchronous rectification

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LED2001PHR 数据手册

LED2001

4 A monolithic step-down current source with synchronous

rectification

Datasheet

production data

Applications

• High brightness LED driving

• Halogen bulb replacement

• General lighting

• Signage

HSOP8

VFQFPN8 4x4

Description

Features

The LED2001 is an 850 kHz fixed switching

frequency monolithic step-down DC-DC converter

designed to operate as precise constant current

source with an adjustable current capability up to

4 A DC. The embedded PWM dimming circuitry

features LED brightness control. The regulated

output current is set connecting a sensing resistor

to the feedback pin. The embedded synchronous

rectification and the 100 mV typical R_SENSE

voltage drop enhance the efficiency performance.

The size of the overall application is minimized

thanks to the high switching frequency and

ceramic output capacitor compatibility. The device

is fully protected against thermal overheating,

overcurrent and output short-circuit. The

• 3.0 V to 18 V operating input voltage range

• 850 kHz fixed switching frequency

• 100 mV typ. current sense voltage drop

• PWM dimming

•

7% output current accuracy

• Synchronous rectification

• 95 m HS / 69 m LS typical R_DS(on)

• Peak current mode architecture

• Embedded compensation network

• Internal current limiting

• Ceramic output capacitor compliant

• Thermal shutdown

LED2001 is available in VFQFPN 4 mm x 4 mm

8-lead package, and HSOP8.

Figure 1. Typical application circuit

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May 2013

DocID024346 Rev 1

1/42

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...42

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