ZLED7015 datasheet(1/22 Pages) IDT

部件名	ZLED7015

功能描述	1.0MHz Boost Converter

PDF	22 Pages

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制造商	IDT [Integrated Device Technology]

网页	http://www.idt.com

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1 / 22 page

1.0MHz Boost Converter

with Internal 35V Switch

ZLED7015

Datasheet

1

April 20, 2016

EN

LX

ZLED7015

LED

String

VIN = 6 to 30 VDC

COUT

R1

L1

CIN

D1

FB

PGND

AGND

OVP

R2

RS

VP

VDD

C1

CVDD

CVP

C2

RVDD

REN

COVP

VOUT

Brief Description

The ZLED7015, one of our ZLED family of LED

control ICs, is a constant current boost converter

with an internal high-power 35V switch. It is opti-

mal for driving multiple white LEDs connected in

series so that the LED current is uniform for better

brightness and color control. It can also drive

devices that require a constant voltage and is

capable

of

operating

efficiently

with

voltage

supplies ranging from 6VDC to 30VDC. It is ideal

for diverse lighting applications requiring low sup-

ply voltages such as SELV applications. Typically,

smaller, less expensive external components can

be used since the ZLED7015 switches at 1 .0MHz

(typical).

The ZLED7015 output current is adjustable via an

external current sense resistor RS connected from

the FB pin to ground.

The ZLED7015 improves efficiency and minimizes

power losses in the current setting resistor RS by

use of an internal 0.3V feedback reference vol-

tage.

Dimming can be controlled using a pulse-width

modulation (PWM) waveform or a DC voltage

applied to the FB pin.

The ZLED7015 provides a “soft-start” function to

prevent excessive in-rush current on start-up and

ensures a controlled rise of the output voltage.

Over-voltage protection is adjustable via external

resistors R1 and R2.

ZLED7015 Typical Application Circuit

Features

• Integrated 35V power switch

• Wide input range: 6VDC to 30VDC

• Over-temperature protection

• Over-voltage (open LED string) protection adjusted

via external resistor divider

• Under-voltage lockout ensures reliable circuit

operation

• Control of output current during start-up via internal

“soft-start”

• Switching frequency: 1.0MHz

• Single pin on/off or brightness control via PWM,

microcontroller, or DC voltage control signal input

• MSOP-10 package

Benefits

• High efficiency: up to 95% efficiency

• Few small, low-profile components needed for

operation

• Small form-factor package

Available Support

• Evaluation Kit

Physical Characteristics

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

• RoHS-compliant

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