MAX16812 Maxim Integrated Products, MAX16812 Datasheet

MAX16812

Manufacturer Part Number

MAX16812

Description

Integrated High-Voltage LED Driver

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX16812.pdf (21 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX16812ATI+T

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

H&T Electronics

Part Number:

MAX16812ATI+T

Quantity:

Current page: 1 of 21
Download datasheet (390Kb)

The MAX16812 is a peak-current-mode LED driver with

an integrated 0.2Ω power MOSFET designed to control

the current in a single string of high-brightness LEDs

(HBLEDs). The MAX16812 can be used in multiple con-

verter topologies such as buck, boost, or buck-boost.

The MAX16812 operates over a 5.5V to 76V wide sup-

ply voltage range.

The MAX16812 features a low-frequency, wide-range

brightness adjustment (100:1), analog and PWM dim-

ming control input, as well as a resistor-programmable

EMI suppression circuitry to control the rise and fall

times of the internal switching MOSFET. A high-side

LED current-sense amplifier and a dimming MOSFET

driver are also included, simplifying the design and

reducing the total component count.

The MAX16812 uses peak-current-mode control,

adjustable slope compensation that allows for addition-

al design flexibility. The device has two current regula-

tion loops. The first loop controls the internal switching

MOSFET peak current, while the second current regula-

tion loop controls the LED current. Switching frequency

can be adjusted from 125kHz to 500kHz.

Additional features include adjustable UVLO, soft-start,

external enable/disable input, thermal shutdown, a

1.238V 1% accurate buffered reference, and an on-

chip oscillator. An internal 5.2V linear regulator supplies

up to 20mA to power external devices.

The MAX16812 is available in a thermally enhanced

5mm x 5mm, 28-pin TQFN-EP package and is specified

over the automotive -40°C to +125°C temperature range.

19-0880; Rev 0; 7/07

Typical Application Circuit and Pin Configuration appear at

end of data sheet.

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.

Automotive Lighting:

Architectural and Industrial Lighting

DRL, Fog Lights

Rear Combination Lights

Front and Rear Signal Lights

Interior Lighting

Warning and Emergency Lighting

________________________________________________________________ Maxim Integrated Products

with Analog and PWM Dimming Control

General Description

Integrated High-Voltage LED Driver

Applications

♦ Integrated 76V, 0.2Ω (typ) Power MOSFET

♦ 5.5V to 76V Wide Input Range

♦ Adjustable LED Current with 5% Accuracy

♦ Floating Differential LED Current-Sense Amplifier

♦ Floating Dimming N-Channel MOSFET Driver

♦ PWM LED Dimming with:

♦ Peak-Current-Mode Control

♦ 125kHz to 500kHz Adjustable Switching Frequency

♦ Adjustable UVLO and Soft-Start

♦ Output Overvoltage Protection

♦ 5µs LED Current Rise/Fall Times During Dimming

♦ Overtemperature and Short-Circuit Protection

+ Denotes a lead-free package.

* EP = Exposed pad.

MAX16812ATI+

Minimize EMI

VOUT

PWM Control Signal

Analog Control Signal

Chopped V

PART

TGRM

OV1

OV2

L_REG

TGRM

DIM

-40°C to +125°C

TEMP RANGE

Input

H_REG

BUCK-BOOST CONFIGURATION

Ordering Information

MAX16812

Simplified Diagram

www.DataSheet4U.com

PIN-

PACKAGE

28 TQFN-EP* T2855-8

COMP1

DOUT

Features

COMP

SRC

DRV

SLP

COMP2

CODE

VOUT

PKG

SRC

OUT

SLP

COMP1

Related parts for MAX16812

Related keywords

MAX16812 datasheet
MAX16812 data sheet
MAX16812 pdf datasheet
MAX16812 component
MAX16812 part
MAX16812 distributor
MAX16812 RoHS
MAX16812 datasheet download