Description
The MAX8510/MAX8511/MAX8512 ultra-low-noise, lowdropout (LDO) linear regulators are designed to deliver up to 120mA continuous output current. These regulators achieve a low 120mV dropout for 120mA load current. The MAX8510 uses an advanced architecture to achieve ultra-low output voltage noise of 11µVRMS and PSRR of 54dB at 100kHz.
The MAX8511 does not require a bypass capacitor, hence achieving the smallest PC board area. The MAX8512’s output voltage can be adjusted with an external divider.
The MAX8510/MAX8511 are preset to a variety of voltages in the 1.5V to 4.5V range. Designed with a P-channel MOSFET series pass transistor, the MAX8510/MAX8511/ MAX8512 maintain very low ground current (40µA).
The regulators are designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8510 requires only 1µF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1µA.
Package options include a 5-pin SC70 and a tiny 2mm x 2mm x 0.8mm TDFN package.
Features
♦ Space-Saving SC70 and TDFN (2mm x 2mm) Packages
♦ 11µVRMS Output Noise at 100Hz to 100kHz Bandwidth (MAX8510)
♦ 78dB PSRR at 1kHz (MAX8510)
♦ 120mV Dropout at 120mA Load
♦ Stable with 1µF Ceramic Capacitor for Any Load
♦ Guaranteed 120mA Output
♦ Only Need Input and Output Capacitors (MAX8511)
♦ Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V,2.85V, 3V, 3.3V, 4.5V (MAX8510/MAX8511) and Adjustable (MAX8512)
♦ Low 40µA Ground Current
♦ Excellent Load/Line Transient
♦ Overcurrent and Thermal Protection
Applications
Cellular and Cordless Phones
PDA and Palmtop Computers
Base Stations
Bluetooth Portable Radios and Accessories
Wireless LANs
Digital Cameras
Personal Stereos
Portable and Battery-Powered Equipment
Feature
- Fixed -4.1V or Adjustable -0.5V to -9V Output at 5mA
- 4.5V to 10V Input Voltage Range
- 2mVP-P Output Voltage Ripple (MAX850-MAX852)
- 1mVP-P Output Voltage Ripple (MAX853)
- 100kHz Charge-Pump Switching Frequency (MAX850/MAX851/MAX853)
- External Synchronizing Clock Input (MAX852)
- Logic-Level Shutdown Mode: 1μA Max Over Temperature (MAX850/MAX852/MAX853)
- Low Cost, 8-Pin SO Package
Applications
- Cell Phones
- Continuously Adjustable GaAsFET Bias
- LCD-Bias Contrast Control
- Negative Regulated Power Supplies
- Personal Communicators, PDAs
- Wireless Data Loggers
(Picture: Pinout)
