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MAX6471

300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit

Please check latest availability status for a specific part variant.

Overview

Description

The MAX6469–MAX6484 are low-dropout linear regulators with a fully integrated microprocessor reset circuit. Each is available with preset output voltages from +1.5V to +3.3V in 100mV increments and delivers up to 300mA of load current. These devices consume only 82µA of supply current. The low supply current, low dropout voltage, and integrated reset functionality make these devices ideal for battery-powered portable equipment.

The MAX6469–MAX6484 include a reset output that indicates when the regulator output drops below standard microprocessor supply tolerances (-7.5% or -12.5% of nominal output voltage). This eliminates the need for an external microprocessor supervisor, while ensuring that supply voltages and clock oscillators have stabilized before processor activity is enabled. Push-pull and open-drain active-low reset outputs are available, with reset timeout periods of 2.5ms, 20ms, 150ms, or 1200ms (min).

The MAX6469/MAX6470/MAX6473–MAX6478/MAX6481–MAX6484 also have a shutdown feature that reduces the supply current to 0.1µA (typ). The MAX6471-MAX6474/MAX6479–MAX6482 offer a manual reset input to assert a microprocessor reset while the regulator output is within specification. The MAX6475/MAX6476/MAX6483/MAX6484 feature a remote feedback sense pin for use with an external NPN transistor for higher-current applications. The MAX6469–MAX6476 are available in 6-pin SOT23 and 8-pin TDFN packages. The MAX6477–MAX6484 are available in a 3 × 3 chip-scale package (UCSP™). All devices are specified for operation from -40°C to +85°C.

MAX6469, MAX6470, MAX6471, MAX6472, MAX6473, MAX6474, MAX6475, MAX6476, MAX6477, MAX6478, MAX6479, MAX6480, MAX6481, MAX6482, MAX6483, MAX6484: Typical Application Circuit

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Key Features

3 x 3 UCSP, 6-Pin SOT23, and 8-Pin TDFN Packages
Preset +1.5V to +3.3V Output (100mV Increments)
SET Pin for Adjustable Output Voltage
75µV_RMS LDO Output Voltage Noise (MAX6477–MAX6484)
±2.0% Accuracy Over Temperature
Guaranteed 300mA Output Current
Low Dropout Voltage
- 55mV at 150mA
- 114mV at 300mA
82µA Supply Current, 0.1µA Shutdown Current
Input Reverse Current, Thermal and Short-Circuit Protection
Microprocessor Reset with Four Timeout Options
Push-Pull or Open-Drain Active-Low RESET
Manual Reset Input
Remote Feedback Sense

Applications/Uses

Bluetooth® Modules/Wireless LAN
CD/DVD Drives
Cell Phones/Cordless Phones
Digital Cameras
Handheld Instruments (PDAs, Palmtops)
Notebook Computers
PCMCIA Cards/USB Devices

Parametric Specs

Part Number

Regulators

V_IN
(V)

Preset V_OUT
(V)

Adj. V_OUT
(V)

V_DROPOUT @Rated I_LOAD
(V)

Rated I_LOAD
(mA)

I_CC
(µA)

Output Voltage Noise
(µV RMS)

Ref. Bypass

Low Batt./ Pwr. Fail Out

POK/Reset Thresh.
(V)

Watchdog

Reverse Batt. Protect.

Oper. Temp.
(°C)

Package/Pins

Budgetary
Price

min

max

min

max

typ

max

typ

nom

See Notes

MAX6469

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

SOT23/6

TDFN/8

$2.39 @1k

MAX6470

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

SOT23/6

TDFN/8

MAX6471

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

SOT23/6

TDFN/8

MAX6472

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

SOT23/6

TDFN/8

MAX6473

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

SOT23/6

TDFN/8

MAX6474

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

TDFN/8

MAX6475

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

1.23

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

TDFN/8

MAX6476

2.5

5.5

1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3

1.23

0.11

300

136

150

Vout-12.5%

Vout-7.5%

-40 to +85

SOT23/6

TDFN/8

ICL7663

1.5

1.3

0.9

-40 to +85

-20 to +85

0 to +70

MET.CAN/8

PDIP/8

SOIC (N)/8

$1.88 @1k

See All Linear Regulators (144)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

MAX6470EVKIT: Evaluation Kit for the MAX6469, MAX6470, MAX6471, MAX6472, MAX6473, MAX6474, MAX6475, MAX6476

Quality and Environmental Data

Request Reliability Report for: MAX6471
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Topmark Coding MAX6471

CAD Symbols and Footprints

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Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
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