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Ultra-Low Output Voltage, Low-Quiescent-Current Linear Regulator for High-Temperature Applications

Low 13µA Quiescent-Current Linear Regulator Delivers Up to 100mA

Product Details

Key Features

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 0.5
Adj. VOUT (V) (max) 3.3
Rated ILOAD (mA) 100
Preset VOUT (V) 1
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.044
ICC (µA) (max) 20
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-17.5%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +125
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.27
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Simplified Block Diagram

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Parameters

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 0.5
Adj. VOUT (V) (max) 3.3
Rated ILOAD (mA) 100
Preset VOUT (V) 1
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.044
ICC (µA) (max) 20
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-17.5%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +125
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.27

Key Features

  • Preset 0.5V to 3.3V Output Voltage Range
  • Up to 100mA Output Current at TA = +125°C
  • 13µA Quiescent Current
  • Logic-Controlled Enable
  • Adjustable POR Delay Flag
  • Short to GND Protection on Reset Timer
  • Used in Parallel with High-Current Supply of Equal Voltages
  • Thermal-Overload and Short-Circuit Protection
  • Tiny 8-Pin µMAX® Package with Exposed Pad

Applications/Uses

  • Handheld/Portable Devices
  • Industrial
  • Keep-Alive Timers
  • SDRAM Power Supplies

Description

The MAX16999 linear regulator operates from a 2.5V to 5.5V input voltage and delivers 100mA continuous load current with a low quiescent current typically around 13µA. The output voltage is preset to internally trimmed voltages in the 0.5V to 3.3V range (see the Selector Guide in the full data sheet). An active-low, open-drain reset output remains low for a programmable timeout delay after the output voltage reaches regulation. The reset timeout is programmed by an external capacitor connected to CRES.

This device also features logic-controlled shutdown, and short-circuit and thermal-overload protection. The typical applications are multimedia, telematics, and motor control microcontrollers (µCs) with always-on requirements. The MAX16999 is used as a parallel, low-quiescent supply to power the core or interrupt section of µCs during sleep mode. It can also be used to supply a timer or memory during µC shutoff. The adjustable POR delay assists with power-supply sequencing.

Simplified Block Diagram

MAX16999: Typical Operating Circuit MAX16999: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.