Datasheet > ZLED7022

ZLED7022

更新时间： 2024-11-24 01:10:51

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
14页	294K
描述
Low-Voltage Six-Channel LED Driver

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中文翻译

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ZLED7022 数据手册

ZLED7022

Low-Voltage Six-Channel

LED Driver

Datasheet

Brief Description

Benefits

The ZLED7022, one of our ZLED family of LED control

ICs, is a low-noise, constant-frequency charge pump

DC/DC converter that can drive up to six LED channels,

providing a programmable constant current level ranging

from 1.8mA to 20mA per LED channel. It can also drive

higher current LEDs because its current sinks can

operate in parallel. It enables white or other color LED

applications that require uniform intensity and/or linear

progressions in brightness. Capable of operating effi-

ciently with DC voltage supplies ranging from 2.8V to

5.5V, it is ideal for small, battery-powered applications

because very few external components are needed:

typically one small-dimension 1μF capacitor across the

C+ and C- pins and two small-dimension 2.2μF capaci-

tors to GND from the VCC and Vout pins.

• Current matching accuracy: ±0.9% (typical)

• One-pin on/off or brightness control for up to six

LEDs via a simple PCC serial interface—no pulse-

width modulation or additional control circuit needed

• 14 programmable current levels for achieving real-

time control of effects such as LED fade-out or

sudden changes in brightness

• Low EMI and back-injected noise because the

charge pump is not inductor-based

• Very few external components needed for operation

• Flexible design enables diverse LED applications: up

to 20mA per channel

• LED driver family concept with low-voltage

four-channel LED driver ZLED7012

The ZLED7022’s Pulse Count Control (PCC) serial digi-

tal input is used to enable/disable the LEDs and set the

current level (14 settings using a nearly logarithmic

scale to provide a linear brightness progression). This

simple, high-speed interface allows efficient real-time

management of LEDs via microcontrollers or control

systems.

Available Support

•

Evaluation Kit

The ZLED7022’s features include integrated soft-start

circuitry to protect against excessive in-rush current dur-

ing power-on and a low-current shutdown mode that

reduces quiescent current consumption to approximately

1μA (typical) by disconnecting the load from the input

when the EN/SET pin is low for a specified time.

Physical Characteristics

• Voltage supply: 2.8V to 5.5V DC

• Operating temperature: -40°C to 85°C

• Small footprint 12-pin UTQFN package (2mm×2mm)

Features

• Low quiescent current in low-current shutdown

mode: 1μA typical; <2μA maximum

• Integrated thermal shutdown protection prevents

damage by shutting down the ZLED7022 if the die

junction temperature exceeds 160°C (typical)

ZLED7022 Application Circuit

• Fixed charge pump switching frequency: 1MHz (typ.)

• Soft-start feature protects against excessive

inrush current during power-on

1μF

Cpump

C+

C-

2.8V to 5.5V

Vout

VCC

Cin

2.2μF

Cout

2.2μF

ZLED7022

GND

EN/SET

n<=14

April 20, 2016

12 3 4 5 6 7...14

中文翻译

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与ZLED7022相关器件

型号	品牌	获取价格	描述	数据表
ZLED7022KIT-E1	IDT	获取价格	Low-Voltage Six-Channel LED Driver
ZLED7022ZI1R	IDT	获取价格	Low-Voltage Six-Channel LED Driver
ZLED7022-ZI1R	IDT	获取价格	Interface Circuit
ZLED7030	IDT	获取价格	High Current 40V LED Driver with Switch Dimming
ZLED7030KIT-D1	ETC	获取价格	High Current 40V LED Driver with Switch Dimming
ZLED7030-ZI1R	ETC	获取价格	High Current 40V LED Driver with Switch Dimming
ZLED7320	IDT	获取价格	High Current 40V LED Driver with Internal Switch
ZLED7320-ZI1R	ETC	获取价格	High Current 40V LED Driver with Internal Switch
ZLED7330	IDT	获取价格	High Current 40V LED Driver with Switch Dimming
ZLED7330-ZI1R	ETC	获取价格	High Current 40V LED Driver with Switch Dimming

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