MAX16802B Maxim Integrated Products, MAX16802B Datasheet

MAX16802B

Manufacturer Part Number

MAX16802B

Description

Offline and DC-DC PWM Controllers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX16802B.pdf (16 pages)

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Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX16802BEUA+

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Maxim

Quantity:

300

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Part Number:

MAX16802BEUA+

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MAXIM/美信

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The MAX16801A/B/MAX16802A/B high-brightness (HB)

LED driver-control ICs contain all the circuitry required

for the design of wide-input-voltage-range LED drivers

for general lighting and display applications. The

MAX16801 is well suited for universal input (rectified

85VAC to 265VAC) LED drivers, while the MAX16802 is

intended for low-input-voltage (10.8VDC to 24VDC) LED

drivers.

When the LED current needs to be tightly regulated, an

additional on-board error amplifier with 1% accurate ref-

erence can be utilized. A wide dimming range can be

implemented by using low-frequency PWM dimming.

The MAX16801/MAX16802 feature an input undervoltage

lockout (UVLO) for programming the input-supply start

voltage, and to ensure proper operation during brownout

conditions. The MAX16801 has an internal-bootstrap

undervoltage lockout circuit with a large hysteresis that

simplifies offline LED driver designs. The MAX16802 does

not have this internal bootstrap circuit and can be biased

directly from a +12V rail.

The 262kHz fixed switching frequency is internally

trimmed, allowing for optimization of the magnetic and fil-

ter components, resulting in a compact, cost-effective

LED driver. The MAX16801A/MAX16802A are offered with

50% maximum duty cycle. The MAX16801B/MAX16802B

are offered with 75% maximum duty cycle. These devices

are available in an 8-pin µMAX

over the -40°C to +85°C temperature range.

19-3880; Rev 2; 1/10

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Warning: The MAX16801/MAX16802 are designed to work with high voltages. Exercise caution.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Offline and DC-DC LED

Drivers

RGB Back Light for LCD

TVs and Monitors

________________________________________________________________ Maxim Integrated Products

General Description

PWM

10.8VDC TO 24VDC

ENABLE

Offline and DC-DC PWM Controllers for

Commercial and

Industrial Lighting

Decorative and

Architectural Lighting

GND

package and operate

UVLO/EN

DIM/FB

COMP

Applications

MAX16802B

NDRV

GND

High-Brightness LED Drivers

♦ Suitable for Buck, Boost, Flyback, SEPIC, and

♦ Up to 50W or Higher Output Power

♦ Universal Offline Input Voltage Range: Rectified

♦ IN Pin Directly Driven From 10.8VDC to 24VDC

♦ Internal Error Amplifier with 1% Accurate

♦ PWM or Linear Dimming

♦ Fixed Switching Frequency of 262kHz ±12%

♦ Thermal Shutdown

♦ Digital Soft-Start

♦ Programmable Input Startup Voltage

♦ Internal Bootstrap UVLO with Large Hysteresis

♦ 45µA (typ) Startup Supply Current, 1.4mA (typ)

♦ 50% (MAX16801A/MAX16802A) or 75%

♦ Available in a Tiny 8-Pin µMAX Package

+Denotes lead-free package.

MAX16801AEUA+

MAX16801BEUA+

MAX16802AEUA+

MAX16802BEUA+

Other Topologies

85VAC to 265VAC (MAX16801)

Input (MAX16802)

Reference for Precise LED Current Regulation

(MAX16801)

Operating Supply Current

(MAX16801B/MAX16802B) Maximum Duty Cycle

PART

Typical Operating Circuit

Ordering Information

-40°C to +85°C

RANGE

TEMP

LEDs

www.DataSheet4U.com

Features

PIN-

PACKAGE

8 µMAX

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