MAX6469, MAX6470, MAX6471, MAX6472, MAX6473, MAX6474, MAX6475, MAX6476, MAX6477, MAX6478, MAX6479, MAX6480, MAX6481, MAX6482, MAX6483, MAX6484 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit

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.

Key Features

Applications/Uses

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

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

Key Specifications: Linear Regulators
Part Number	Regulators per Pkg.	Min. V_IN (V)	Max. V_IN (V)	Preset V_OUT (V)	Min. Adjustable V_OUT (V)	Max. Adjustable V_OUT (V)	Typ. V_DROPOUT@ Rated I_LOAD (V)	Rated I_LOAD (mA)	Max. I_CC (µA)	Low Battery/ Power Fail Output	Nominal POK/Reset Threshold (V)	Watchdog	Reverse Battery Protection	Package	Smallest Available Package (max w/pins) (mm²)	Operating Temp. Range (°C)	Price^**
MAX6469	1	2.5	5.5	1.5 to 3.3	-	-	0.11	300	136	No	Vout-12.5% Vout-7.5%	No	No	SOT/6 TDFN-EP/8	9	-40 to +85	$1.50 @ 1k
MAX6470					-	-								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6471					-	-								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6472					-	-								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6473					-	-								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6474					-	-								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6475					1.23	5								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6476					1.23	5								SOT/6 TDFN-EP/8	9		$1.50 @ 1k
MAX6477					-	-								UCSP/6	2		$1.50 @ 1k
MAX6478					-	-								UCSP/6	2		$1.50 @ 1k
MAX6479					-	-								UCSP/6	2		$1.35 @ 10k
MAX6480					-	-								UCSP/6	2		$1.50 @ 1k
MAX6481					-	-								UCSP/6	2		$1.50 @ 1k
MAX6482					-	-								UCSP/6	2		$1.50 @ 1k
MAX6483					1.23	5								UCSP/6	2		$1.35 @ 10k
MAX6484					1.23	5								UCSP/6	2		$1.43 @ 5k
See All Linear Regulators (145)

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 prices and delivery, please see the price and availability page or contact an authorized distributor.

Reliability Reports


		Reliability Report: MAX6476.pdf

		Show FIT data for:

		Request Reliability Report for:

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

MAX6469

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX6469UT24AD2

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Related Products

MAX6329, MAX6349 150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit