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General Description

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.

Applications

CCD Bias Supplies and OLED Displays

Digital Cameras

Camcorders and Portable Multimedia

PDAs and Smartphones

Features

♦ 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

MAX8614A/MAX8614B

Dual-Output (+ and -) DC-DC

Converters for CCD

________________________________________________________________ Maxim Integrated Products 1

19-4014; Rev 0; 3/06

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.

14 13 12 11 10

4567

LXN

PVP

PGNDREF

FBN

ONBST

TOP VIEW

MAX8614A

MAX8614B

LXP

ONINV

SEQFBP

FLT

GND

TDFN

Pin Configuration

LXN

INPUT

(2.7V TO 5.5V)

REF

FBN

ONINV

INV

-7.5V

MAX8614A

MAX8614B

GND PGND

ONBST

PVP

LXP

FBP

BST

+15V

REF

SEQ

FLT

Typical Operating Circuit

Ordering Information

PART

TEMP

RANGE

PIN-

PACKAGE

TOP

MARK

ILIM

BST/INV

MAX8614AETD+

-40°C to

+85°C

14 TDFN

3mm x 3mm

(T1433-2)

ABG 0.44/0.33

MAX8614BETD+

-40°C to

+85°C

14 TDFN

3mm x 3mm

(T1433-2)

ABH 0.8/0.75

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

+Denotes lead-free package.

1 2 3 4 5 6 ... 14 15

Indice de contenidos

Pagina 1 - Converters for CCD

General DescriptionThe MAX8614A/MAX8614B dual-output step-up DC-DCconverters generate both a positive and negative sup-ply voltage that are each indep

Pagina 2

MAX8614A/MAX8614BDual-Output (+ and -) DC-DCConverters for CCD10 _____________________________________________________________________________________

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MAX8614A/MAX8614BDual-Output (+ and -) DC-DCConverters for CCDMaxim cannot assume responsibility for use of any circuitry other than circuitry entirel

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MAX8614A/MAX8614BDual-Output (+ and -) DC-DCConverters for CCD_______________________________________________________________________________________

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MAX8614A/MAX8614BDual-Output (+ and -) DC-DCConverters for CCD_______________________________________________________________________________________

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Pagina 15

MAX8614A/MAX8614BDual-Output (+ and -) DC-DCConverters for CCD_______________________________________________________________________________________

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