MAX8614B Maxim Integrated Products, MAX8614B Datasheet

MAX8614B

Manufacturer Part Number

MAX8614B

Description

(MAX8614A / MAX8614B) Dual-Output (+ and -) DC-DC

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX8614B.pdf (15 pages)

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The MAX8614A/MAX8614B dual-output step-up DC-DC

converters generate both a positive and negative sup-

ply voltage that are each independently regulated. The

positive output delivers up to 50mA while the inverter

supplies up to 100mA with input voltages between 2.7V

and 5.5V. The MAX8614A/MAX8614B are ideal for pow-

ering CCD imaging devices and displays in digital

cameras and other portable equipment.

The MAX8614A/MAX8614B generate an adjustable

positive output voltage up to +24V and a negative out-

put down to 16V below the input voltage. The

MAX8614B has a higher current limit than the

MAX8614A. Both devices operate at a fixed 1MHz fre-

quency to ease noise filtering in sensitive applications

and to reduce external component size.

Additional features include pin-selectable power-on

sequencing for use with a wide variety of CCDs, True

Shutdown™, overload protection, fault flag, and internal

soft-start with controlled inrush current.

The MAX8614A/MAX8614B are available in a space-

saving 3mm x 3mm 14-pin TDFN package and

are specified over the -40°C to +85°C extended

temperature range.

19-4014; Rev 0; 3/06

True Shutdown is a trademark of Maxim Integrated Products, Inc.

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.

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CCD Bias Supplies and OLED Displays

Digital Cameras

Camcorders and Portable Multimedia

PDAs and Smartphones

________________________________________________________________ Maxim Integrated Products

General Description

MAX8614A

MAX8614B

TDFN

Pin Configuration

Applications

Dual-Output (+ and -) DC-DC

♦ Dual Output Voltages (+ and -)

♦ Adjustable Up to +24V and Down to -10V at 5.5V

♦ Output Short/Overload Protection

♦ True Shutdown on Both Outputs

♦ Controlled Inrush Current During Soft-Start

♦ Selectable Power-On Sequencing

♦ Up to 90% Efficiency

♦ 1µA Shutdown Current

♦ 1MHz Fixed-Frequency PWM Operation

♦ Fault-Condition Flag

♦ Thermal Shutdown

♦ Small, 3mm x 3mm, 14-Pin TDFN Package

+Denotes lead-free package.

MAX8614AETD+

MAX8614BETD+

(2.7V TO 5.5V)

PART

INPUT

Converters for CCD

Typical Operating Circuit

RANGE

-40°C to

ONINV

ONBST

REF

SEQ

FLT

+85°C

TEMP

GND

MAX8614A

MAX8614B

Ordering Information

PGND

PIN-

PACKAGE

14 TDFN

3mm x 3mm

(T1433-2)

14 TDFN

3mm x 3mm

(T1433-2)

LXN

FBN

FBP

PVP

LXP

MARK

TOP

ABG

ABH

Features

BST/INV

0.44/0.33

0.8/0.75

-7.5V

+15V

INV

BST

ILIM

REF

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