MAX8830EWE MAXIM [Maxim Integrated Products], MAX8830EWE Datasheet

MAX8830EWE

Manufacturer Part Number

MAX8830EWE

Description

LED Light Management IC in 2.5mm x 2.5mm UCSP

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX8830EWE.pdf (15 pages)

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The MAX8830 light management IC integrates a 280mA

PWM DC-DC step-up converter, a 200mA white LED

camera flash current sink, and four programmable LED

current sinks. The internal 1MHz step-up converter fea-

tures an internal switching MOSFET and synchronous

rectifier to improve efficiency and minimize external

component count. The camera flash output current and

maximum timer is programmable through I

current is individually regulated to a programmable level

(from off to 10mA in 32 steps) and is completely inde-

pendent of each other.

An I

step-up output voltage setting, movie/flash current,

flash timer duration settings, and individual LED current

sink settings.

The MAX8830 is available in a 16-bump UCSP™ pack-

age (2.5mm x 2.5mm).

19-0782; Rev 0; 4/07

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

2.7V TO 5.5V

C interface controls individual on/off of all outputs,

MOVIE ON

FLASH ON

INPUT

Cell Phones and Smartphones

PDAs and MP3 Players

LOGIC

Typical Operating Circuit

2.2μH TO

10μH

________________________________________________________________ Maxim Integrated Products

GND

PGND

COMP

MVON

FLEN

SCL

SDA

MAX8830

General Description

FLED

LED1

LED2

LED3

LED4

OUT

200mA FLASH

Applications

OUT

PROGRAMMABLE

UP TO 280mA

3.8V TO 5.2V

C. Each LED

OUTPUT

LED Light Management IC in

♦ Step-Up DC-DC Converter

♦ Flash LED Current Sink

♦ Four LED Current Sinks

♦ I

♦ < 1µA Shutdown Current

♦ Open/Short LED Detection

♦ Thermal-Shutdown Protection

♦ 16-Bump, 2.5mm x 2.5mm UCSP Package

+ Denotes a lead-free package.

Pin Configuration appears at the end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

MAX8830EWE+T

2.5mm x 2.5mm UCSP

Individually I

Low LED Sink Current Dropout Voltage (30mV typ)

Write Address (0x94), Read Address (0x95)

Individual On/Off and LED Current Settings

Simple Register Mapping

C Interface

280mA Guaranteed Output Current

Over 90% Efficiency

On-Chip FET and Synchronous Rectifier

Fixed 1MHz PWM Switching

Small 2.2µH to 10µH Inductor

Movie Enabled by I

Flash Enabled by Logic Input

Low Dropout (75mV typ)

Off to 10mA in 32 Steps

PART

C-Programmable V

C-Programmable Flash Output Current (Off to

C-Programmable Flash Maximum Timer (0.5s,

C-Programmable Movie Output Current (Off to

16 Steps)

200mA in 16 Steps)

1.0s, 1.5s, or 2.0s)

200mA in 16 Steps)

C-Programmable Output Current

RANGE

-40°C to

TEMP

+85°C

Ordering Information

C or Logic Input

OUT

PIN-PACKAGE

16-bump 2.5mm x

2.5mm UCSP

(3.8V to 5.2V and Off in

Features

W162A2-1

CODE

PKG

Related parts for MAX8830EWE

MAX8830EWE Summary of contents

Page 1

... UP TO 280mA ♦ Open/Short LED Detection C OUT ♦ Thermal-Shutdown Protection ♦ 16-Bump, 2.5mm x 2.5mm UCSP Package 200mA FLASH PART MAX8830EWE+T + Denotes a lead-free package. Pin Configuration appears at the end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. Features (3.8V to 5.2V and Off in OUT 2 ...

Page 2

LED Light Management IC in 2.5mm x 2.5mm UCSP ABSOLUTE MAXIMUM RATINGS IN, OUT to GND………………………....…………..-0.3V to +6.0V IN, OUT to GND (maximum of 1µs) ....................................+7. GND ...........................................................-0.3V to +4.0V DD SCL, SDA, MVON, FLEN to GND..................-0.3V to ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 3.6V 0V 3.0V GND PGND DD PARAMETER SCL High Period Setup Time Repeated START Condition SDA Hold Time SDA Setup Time Setup Time for STOP Condition STEP-UP ...

Page 4

LED Light Management IC in 2.5mm x 2.5mm UCSP ELECTRICAL CHARACTERISTICS (continued 3.6V 0V 3.0V GND PGND DD PARAMETER LED1–LED4 CURRENT SINK DRIVER IN Supply Current Maximum Current Setting Current ...

Page 5

V = 3.8V 3.0V, circuit of Figure OUT DD STEP-UP CONVERTER EFFICIENCY vs. INPUT VOLTAGE 100 I = 200mA OUT V = 3.8V OUT OUT 92 ...

Page 6

LED Light Management IC in 2.5mm x 2.5mm UCSP (V = 3.6V 3.8V 3.0V, circuit of Figure OUT DD OSCILLATOR FREQUENCY vs. INPUT VOLTAGE 1.20 1.15 1.10 1.05 1.00 0.95 0.90 2.7 3.1 ...

Page 7

UCSP NAME BUMP Flash LED Current-Sink Regulator. Current flowing into FLED is based on the internal I A1 FLED Connect FLED to the cathode of an external flash LED or LED module. FLED is high impedance during shutdown. If unused, ...

Page 8

LED Light Management IC in 2.5mm x 2.5mm UCSP L1* 10μ 2. 10μF GND PGND R COMP COMP C COMP MVON MOVIE ON /OFF FLEN FLASH ON /OFF SCL SERIAL SDA INTERFACE ...

Page 9

Flash Current-Sink Regulator (FLED, MVON, FLEN) A low-dropout linear current regulator from FLED to PGND sinks current from an external flash LED cathode terminal. The FLED current is regulated to I mable levels for movie mode (up to 200mA) and ...

Page 10

LED Light Management IC in 2.5mm x 2.5mm UCSP Serial Interface The step-up converter OUT voltage, FLED flash current and duration, FLED movie current, and LED_ individual 2 currents are set using the I C serial interface. ...

Page 11

Table 1. Control Data Byte FUNCTION Step-Up OUT Voltage Unused LED1 Current LED2 Current LED3 Current LED4 Current Unused Flash Current Movie Current Other Note MSB and D0 is LSB. Table 2. Control Register Data Default Settings FUNCTION ...

Page 12

LED Light Management IC in 2.5mm x 2.5mm UCSP Table 3. Step-Up Voltage and LED Current Settings OUT VOLTAGE (V) OR LED CURRENT (mA) OUT LED1 LED2 LED3 OFF OFF OFF OFF 3.8 0.63 0.63 0.63 3.9 0.94 0.94 0.94 ...

Page 13

Table 4 lists the MVON control settings; Table 5 lists flash duration settings. Table 6 shows the read (0x95) status register. Table 4. MVON Control Setting FUNCTION 2 Movie Enabled Through I C Movie Enabled Through MVON Pin Note: Defaults ...

Page 14

LED Light Management IC in 2.5mm x 2.5mm UCSP Table 7. Suggested Inductors MANUFACTURER SERIES Cooper (Coiltronics) SD3114 MIPF2520 FDK MIPW3226 TDK VLF3012AT TOKO DE2812C Inductor Selection The MAX8830 is designed to use a 2.2µH to 10µH inductor. To prevent ...

Page 15

For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim ...

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