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High PSRR, Low-Dropout, 150mA Linear Regulators

Low-Dropout Linear Regulators Designed for Ultra-Low Noise in a SC70 Package

Product Details

Key Features

Applications/Uses

Parametric specs for Linear Regulators
VIN (V) (min) 2
VIN (V) (max) 6
Adj. VOUT (V) (min) 1.225
Adj. VOUT (V) (max) 4.5
Rated ILOAD (mA) 150
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.15
Output Voltage Noise (µV RMS) (typ) 230
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins SC70/5
Budgetary
Price (See Notes)
0.47
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Simplified Block Diagram

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Parameters

Parametric specs for Linear Regulators
VIN (V) (min) 2
VIN (V) (max) 6
Adj. VOUT (V) (min) 1.225
Adj. VOUT (V) (max) 4.5
Rated ILOAD (mA) 150
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.15
Output Voltage Noise (µV RMS) (typ) 230
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins SC70/5
Budgetary
Price (See Notes)
0.47

Key Features

  • Space-Saving SC70 Package
  • 65dB PSRR at 10kHz
  • 120mV Dropout at 120mA Load
  • Stable with 1µF Ceramic Capacitor for Any Load
  • Guaranteed 150mA Output
  • Only Need Input and Output Capacitors (MAX8891)
  • Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3V, 3.3V, 4.5V (MAX8891) and Adjustable (MAX8892)
  • Low 40µA Ground Current
  • Excellent Load/Line Transient
  • Overcurrent and Thermal Protection

Applications/Uses

  • Base Stations
  • Bluetooth Portable Radios and Accessories
  • Cellular and Cordless Phones
  • Digital Cameras
  • PDA and Palmtop Computers
  • Personal Stereos
  • Portable and Battery-Powered Equipment
  • Wireless LANs

Description

The MAX8891/MAX8892 low-dropout (LDO) linear regulators are designed to deliver up to 150mA continuous output current. These regulators achieve a low 120mV dropout for 120mA load current.

The MAX8891 only requires an input/output capacitor, hence achieving the smallest PCB area. The MAX8892's output voltage can be adjusted with an external divider.

The MAX8891 is preset to a variety of voltages in the 1.5V to 4.5V range. Designed with a p-channel MOSFET series pass transistor, the MAX8891/MAX8892 maintain very low ground current (40µA).

The regulators are designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8891/MAX8892 require only 1µF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1µA.

These regulators are available in a tiny 5-pin SC70 package.

Simplified Block Diagram

MAX8891, MAX8892: Typical Operating Circuits MAX8891, MAX8892: Typical Operating Circuits 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 .