MAX8636ELA+T Maxim Integrated Products, MAX8636ELA+T Datasheet

MAX8636ELA+T

Manufacturer Part Number

MAX8636ELA+T

Description

IC REG LINEAR DL 300MA 8UDFN

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX8635ETAT.pdf (13 pages)

Specifications of MAX8636ELA+T

Regulator Topology

Positive Adjustable

Voltage - Output

Adjustable

Voltage - Input

2.7 ~ 5.5 V

Voltage - Dropout (typical)

0.09V @ 100mA

Number Of Regulators

Current - Output

300mA

Current - Limit (min)

400mA

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-µDFN

Number Of Outputs

Polarity

Positive

Input Voltage Max

5.5 V

Output Voltage

1.5 V to 3 V

Output Type

Adjustable

Dropout Voltage (max)

0.2 V at 100 mA

Output Current

300 mA

Voltage Regulation Accuracy

0.7 %

Maximum Power Dissipation

0.38 W

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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The MAX8633–MAX8636 offer low-dropout (LDO) volt-

age and ultra-low-power regulation in a subminiaturized

2mm x 2mm µDFN package. The devices operate from

a 2.7V to 5.5V supply and deliver up to 300mA from

each output, with a typical dropout voltage of 90mV at

100mA load current. Each device is designed with

internal p-channel MOSFET pass transistors to ensure a

low-quiescent supply current of 54µA (typical, both

LDOs on). Other features include low-noise operation

(MAX8634/MAX8636), output current limiting, and ther-

mal shutdown.

The MAX8633 features an open-drain, active-low

RESET output to monitor OUT2, eliminating external

components and adjustments. The MAX8633 asserts a

RESET signal (120ms minimum timeout) when VOUT2

drops below 87% of the nominal output voltage. The

MAX8634/MAX8636 feature a noise bypass input to the

internal reference for low output noise (45µV

The MAX8634/MAX8635 provide independent SHDN

inputs for disabling the regulators, while the MAX8633/

MAX8636 provide a single SHDN input for disabling

both regulators.

The MAX8633/MAX8635/MAX8636 have two logic

inputs that select one of nine preset output-voltage

combinations, eliminating external 1% resistors, as well

as inventory burden. The MAX8634 has one logic input

to select three output-voltage options.

The MAX8633–MAX8636 are available in an 8-pin, 2mm

x 2mm µDFN package for minimizing footprint, and an

8-pin, 3mm x 3mm TDFN package for higher power dis-

sipation. The devices are specified over the extended

temperature range (-40°C to +85°C). All packages are

lead free.

19-0516; Rev 1; 9/08

Pin Configurations and Selector Guide appear at end of

data sheet.

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.

Cellular and Cordless Phones

PDAs and Digital Cameras

Small LCD Displays

Notebook Computers

Wireless LAN Cards

Handheld Instruments

________________________________________________________________ Maxim Integrated Products

General Description

Dual 300mA Pin-Programmable LDO

Applications

RMS

typ).

♦ Pin-Programmable Output Voltages

♦ 300mA Output Current

♦ Low 90mV Dropout at 100mA Load

♦ Open-Drain, Active-Low RESET (MAX8633)

♦ Low 45µV

♦ Low 54µA Quiescent Supply Current

♦ Low < 1µA Maximum Shutdown Current

♦ Output Current Limit

♦ Thermal Shutdown

+ Denotes a lead-free/RoHS-compliant package.

Ordering Information continued at end of data sheet.

MAX8633ELA+ -40°C to +85°C

MAX8633ETA+ -40°C to +85°C

MAX8634ELA+ -40°C to +85°C

Typical Operating Circuits continued at end of data sheet.

2.7V TO 5.5V

PART

2.2μF

INPUT

Linear Regulators

RMS

Typical Operating Circuits

TEMP RANGE

SHDN

Output Noise (MAX8634/MAX8636)

MAX8633

Ordering Information

GND

RESET

OUT1

OUT2

PIN-

PACKAGE

8 µDFN

2mm x 2mm

8 TDFN

3mm x 3mm

8 µDFN

2mm x 2mm

2.2μF

Features

OUT1

OUT2

MARK

AOQ

AAH

TOP

AAI

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MAX8636ELA+T Summary of contents

Page 1

... Wireless LAN Cards Handheld Instruments Pin Configurations and Selector Guide appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. ♦ Pin-Programmable Output Voltages ♦ 300mA Output Current ♦ ...

Page 2

Dual 300mA Pin-Programmable LDO Linear Regulators ABSOLUTE MAXIMUM RATINGS (All voltages refer to GND, unless otherwise noted.) IN ...........................................................................-0.3V to +6.0V SHDN, SHDN1, SHDN2, RESET, P, P1, P2, BP, OUT1, OUT2 .....................-0. Continuous Output Short-Circuit Duration..................Continuous Continuous Power ...

Page 3

Dual 300mA Pin-Programmable LDO ELECTRICAL CHARACTERISTICS (continued) = 3.7V, SHDN = SHDN1 = SHDN2 = IN GND 2.2µ -40°C to +85°C, unless otherwise noted. Typical values are at ...

Page 4

Dual 300mA Pin-Programmable LDO Linear Regulators (V = 3.8V GND OUT1, 2 unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE (MAX8633ELA 70mA OUT1 OUT2 ...

Page 5

Dual 300mA Pin-Programmable LDO (V = 3.8V GND OUT1, 2 unless otherwise noted.) OUTPUT NOISE DC TO 100kHz (MAX8636ELA+) 1ms/div LOAD TRANSIENT (MAX8633ELA+ OUT1 ILOAD = 1mA TO 70mA) 70mA I 1mA ...

Page 6

Dual 300mA Pin-Programmable LDO Linear Regulators PIN MAX8633 MAX8634 MAX8635 — — — — — — 4 — 4 —— 5 — — — 5 — ...

Page 7

Dual 300mA Pin-Programmable LDO IN * SHDN UVLO/ ** SHDN1 SHUTDOWN ** AND POWER-ON SHDN2 CONTROL THERMAL 1.50V SENSOR REF (MAX8634 ONLY) GND IN *MAX8633, MAX8636 ONLY **MAX8634, MAX8635 ONLY ***MAX8634, MAX8636 ONLY _______________________________________________________________________________________ Linear Regulators MOS ...

Page 8

Dual 300mA Pin-Programmable LDO Linear Regulators Detailed Description The MAX8633–MAX8636 are low-power, low-quiescent current, low-dropout linear regulators designed primari- ly for battery-powered applications. Pin-programmable inputs allow easy configuration of OUT1 and OUT2 volt- ages without external 1% resistors. The devices ...

Page 9

Dual 300mA Pin-Programmable LDO considerably. Under heavy loads, pnp base-drive cur- rent becomes large, further reducing efficiency; pnp- based regulators also require considerable current in dropout when the pass transistor saturates. The MAX8633–MAX8636 do not suffer from these problems. With ...

Page 10

Dual 300mA Pin-Programmable LDO Linear Regulators Input-Output Voltage (Dropout Voltage) A regulator’s minimum input-output voltage differential (or dropout voltage) determines the lowest usable sup- ply voltage. In battery-powered systems, this deter- mines the useful end-of-life battery voltage. Because the MAX8633–MAX8636 ...

Page 11

Dual 300mA Pin-Programmable LDO TOP VIEW OUT1 OUT2 GND RESET MAX8633 * SHDN P2 P1 2mm x 2mm μDFN 3mm x 3mm TDFN OUT1 OUT2 GND SHDN2 ...

Page 12

Dual 300mA Pin-Programmable LDO Linear Regulators 2.7V TO 5.5V INPUT 2. 2.2μF MAX8635 P1 P2 SHDN1 SHDN2 GND For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 8 TDFN 8 ...

Page 13

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2008 Maxim Integrated Products ...

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