Rainbow-electronics MAX8569B Bedienungsanleitung PDF herunterladen

General Description

The MAX8569A/MAX8569B low-quiescent-current

boost regulators provide up to 200mA at output volt-

ages up to 5.5V from a 1.5V to 5.5V input source. The

built-in synchronous rectifier allows for over 90% effi-

ciency while achieving small size and low cost by elimi-

nating the need for an external Schottky diode.

The MAX8569A provides an adjustable output while the

MAX8569B is fixed at 3.0V or 3.3V. The MAX8569B fea-

tures a power-on reset output (RST) to signal that the

output has reached regulation. All devices connect the

battery input to the output during shutdown, allowing

the input battery to be used as a backup or real-time

clock supply when the converter is off.

Applications

Features

♦ Over 200mA Available Output Current

♦ 1.5V to 5.5V Input Voltage Range

♦ BATT Connected to OUT in Shutdown for Backup

Power

♦ Up to 95% Efficiency

♦ 7µA Typical Quiescent Current

♦ <1µA Shutdown Supply Current

♦ Internal Synchronous Rectifier

♦ 750mA Switch Current Limit

♦ RST Output (MAX8569B)

♦ Adjustable Output Voltage (MAX8569A)

♦ Fixed 3.0V or 3.3V Output Voltage (MAX8569B)

MAX8569A/MAX8569B

200mA Step-Up Converters in 6-Pin

SOT23 and TDFN

________________________________________________________________ Maxim Integrated Products 1

MAX8569A

(MAX8569B)

TOP VIEW

FB (RST)

OUT

SHDN

BATT

GND

123

TDFN

( ) ARE FOR THE MAX8569B

MAX8569A

(MAX8569B)

TOP VIEW

SOT23

FB (RST)

OUT

SHDN

BATT

GND

+ DENOTES LEAD-FREE PACKAGING

Pin Configurations

Ordering Information

19-3671; Rev 0; 5/05

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.

EVALUATION KIT

AVAILABLE

PART

TEMP RANGE

PIN-PACKAGE

MAX8569AEUT-T*

-40°C to +85°C

6 SOT23-6

(U6FH-6)

MAX8569AETT+

-40°C to +85°C

6 TDFN 3mm x 3mm

(T633-1)

MAX8569BEUT-T*

-40°C to +85°C

6 SOT23-6

(U6FH-6)

MAX8569BETT+

-40°C to +85°C

6 TDFN 3mm x 3mm

(T633-1)

MAX8569BETT30+

-40°C to +85°C

6 TDFN 3mm x 3mm

(T633-1)

Selector Guide appears at end of data sheet.

MAX8569B

RST

OUT

INPUT

3.3V, 200mA

OUTPUT

POWER-ON

RESET

OFF

SHDN

BATT

GND

Typical Operating Circuit

Medical Diagnostic

Equipment

Digital Cameras

PDAs and Smartphones

Cordless Phones

Battery Backup

PC Cards

Local 3.3V or 5V Supply

*Future product—contact factory for availability.

+Denotes lead-free packaging.

1 2 3 4 5 6 ... 10 11

Inhaltsverzeichnis

Seite 1 - SOT23 and TDFN

General DescriptionThe MAX8569A/MAX8569B low-quiescent-currentboost regulators provide up to 200mA at output volt-ages up to 5.5V from a 1.5V to 5.5V

Seite 2

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN10 __________________________________________________________________________________

Seite 3

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFNMaxim cannot assume responsibility for use of any circuitry other than circuitry enti

Seite 4

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN2 ___________________________________________________________________________________

Seite 5

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN_____________________________________________________________________________________

Seite 6

OUTPUT VOLTAGE AND INPUT CURRENTvs. INPUT VOLTAGE (SHUTDOWN, NO LOAD)MAX8569 toc06BATTERY VOLTAGE (V)OUTPUT VOLTAGE (V)BATTERY CURRENT (µA)54321123456

Seite 7

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN_____________________________________________________________________________________

Seite 8

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN6 ___________________________________________________________________________________

Seite 9

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN_____________________________________________________________________________________

Seite 10 - -DRAWING NOT TO SCALE

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN8 ___________________________________________________________________________________

Seite 11 - 6LSOT.EPS

MAX8569A/MAX8569B200mA Step-Up Converters in 6-Pin SOT23 and TDFN_____________________________________________________________________________________

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Inhaltsverzeichnis

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