MAX16833

更新时间： 2024-11-23 11:18:23

品牌	Logo	应用领域
美信 - MAXIM		驱动器高压
页数	文件大小	规格书
22页	1472K
描述
High-Voltage HB LED Drivers with Integrated High-Side Current Sense

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MAX16833 数据手册

19-5187; Rev 3; 7/11

High-Voltage HB LED Drivers with

Integrated High-Side Current Sense

General Description

Features

S Boost, SEPIC, and Buck-Boost Single-Channel

The MAX16833/MAX16833B/MAX16833C/MAX16833D/

MAX16833E are peak current-mode-controlled LED driv-

ers for boost, buck-boost, SEPIC, flyback, and high-side

buck topologies. A dimming driver designed to drive

an external p-channel in series with the LED string pro-

vides wide-range dimming control. This feature provides

extremely fast PWM current switching to the LEDs with

no transient overvoltage or undervoltage conditions. In

addition to PWM dimming, the ICs provide analog dim-

ming using a DC input at ICTRL. The ICs sense the LED

current at the high side of the LED string.

LED Drivers

S +5V to +65V Wide Input Voltage Range with a

Maximum 65V Boost Output

S Integrated High-Side Current-Sense Amplifier

S ICTRL Pin for Analog Dimming

S Integrated High-Side pMOS Dimming MOSFET

Driver (Allows Single-Wire Connection to LEDs)

S Programmable Operating Frequency (100kHz to

1MHz) with Synchronization Capability

S Frequency Dithering for Spread-Spectrum

Applications (MAX16833/MAX16833C/MAX16833E)

A single resistor from RT/SYNC to ground sets the

switching frequency from 100kHz to 1MHz, while an

external clock signal capacitively coupled to RT/SYNC

allows the ICs to synchronize to an external clock. In

the MAX16833/MAX16833C/MAX16833E, the switching

frequency can be dithered for spread-spectrum applica-

tions. The MAX16833B/MAX16833D instead provide a

1.64V reference voltage with a 2% tolerance.

S 2% Accurate 1.64V Reference (MAX16833B/

MAX16833D)

S Full-Scale, High-Side, Current-Sense Voltage of

200mV

S Short-Circuit, Overvoltage, and Thermal

Protection

S Fault Indicator Output

S -40NC to +125NC Operating Temperature Range

The ICs operate over a wide 5V to 65V supply range

and include a 3A sink/source gate driver for driving

a power MOSFET in high-power LED driver applica-

tions. Additional features include a fault-indicator output

(FLT) for short or overtemperature conditions and an

overvoltage-protection sense input (OVP) for overvoltage

protection. High-side current sensing combined with a

p-channel dimming MOSFET allow the positive terminal

of the LED string to be shorted to the positive input termi-

nal or to the negative input terminal without any damage.

This is a unique feature of the ICs.

S Thermally Enhanced 5mm x 4.4mm, 16-Pin TSSOP

Package with Exposed Pad

Simplified Operating Circuit

6V TO 18V

WITH LOAD

DUMP UP

TO 70V

NDRV

OVP

ISENSE+

ISENSE-

PWMDIM

Applications

DIMOUT

Automotive Exterior Lighting:

High-Beam/Low-Beam/Signal/Position Lights

Daytime Running Lights (DRLs)

Fog Light and Adaptive Front Light Assemblies

MAX16833

PGND

LED+

LED-

Commercial, Industrial, and Architectural

Lighting

Ordering Information

MAX DUTY CYCLE FAULT OUTPUT

PART

TEMP RANGE

PIN-PACKAGE

FUNCTIONALITY

(%)

88.5

BLANKING

MAX16833AUE+

16 TSSOP-EP*

Frequency Dithering

Yes

-40°C to +125°C

MAX16833AUE/V+

Yes

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

/V denotes an automotive qualified part.

Ordering Information continued at end of data sheet.

_______________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...22

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与MAX16833相关器件

型号	品牌	获取价格	描述	数据表
MAX16833_11	MAXIM	获取价格	High-Voltage HB LED Drivers with Integrated High-Side Current Sense
MAX16833AUE/V+	MAXIM	获取价格	High-Voltage HB LED Drivers with Integrated High-Side Current Sense
MAX16833AUE+	MAXIM	获取价格	High-Voltage HB LED Drivers with Integrated High-Side Current Sense
MAX16833AUE+/V+	MAXIM	获取价格	LED Driver, 1-Segment, BCDMOS, PDSO16, 5 X 4.40 MM, ROHS COMPLIANT, TSSOP-16
MAX16833B	MAXIM	获取价格	High-Voltage HB LED Drivers with Integrated High-Side Current Sense
MAX16833BAUE/V+	MAXIM	获取价格	LED Driver, 1-Segment, BCDMOS, PDSO16, 5 X 4.40 MM, ROHS COMPLIANT, TSSOP-16
MAX16833BAUE+	MAXIM	获取价格	LED Driver, 1-Segment, BCDMOS, PDSO16, 5 X 4.40 MM, ROHS COMPLIANT, TSSOP-16
MAX16833CAUE/V+T	MAXIM	获取价格	暂无描述
MAX16833CAUE+	MAXIM	获取价格	LED Driver, 1-Segment, BCDMOS, PDSO16, 5 X 4.40 MM, ROHS COMPLIANT, TSSOP-16
MAX16833EAUE/V+	MAXIM	获取价格	LED Driver, 1-Segment, BCDMOS, PDSO16, 5 X 4.40 MM, ROHS COMPLIANT, TSSOP-16

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