MAX1659
350mA, 16.5V Input, Low-Dropout Linear Regulators
Battery-Saving Linear Regulator Consumes Only 30µA and Delivers 350mA
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The MAX1658/MAX1659 feature a 1µA shutdown mode, reverse battery protection, short-circuit protection, and thermal shutdown. They are available in a special high-power (1.2W), 8-pin SO package designed specifically for compact applications.
Key Features
- Wide Input Voltage Range: 2.7V to 16.5V
- Low, 490mV Dropout at 350mA Output Current (MAX1659)
- 30µA Supply Current
- 1µA Max Shutdown Current
- High-Power (1.2W) 8-Pin SO Package
- Dual Mode Operation Output:
- Fixed 3.3V (MAX1658)
- Fixed 5.0V (MAX1659)
- or Adjustable (1.25V to 16V)
- Thermal Overload Protection
- Current-Limit Protection
- Reverse Battery Protection
Applications/Uses
- Cell Phones
- Digital Cordless Phones
- Electronic Planners
- Handheld Instruments (PDAs, Palmtops)
- Modems
- Palmtop Computers
- PCMCIA Cards
- PCS Phones
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 16.5 |
| Adj. VOUT (V) (min) | 1.25 |
| Adj. VOUT (V) (max) | 16 |
| Rated ILOAD (mA) | 350 |
| Preset VOUT (V) | 5 |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.65 |
| ICC (µA) (max) | 60 |
| Output Voltage Noise (µV RMS) (typ) | 2500 |
| Ref. Bypass | No |
| Low Batt./ Pwr. Fail Out | No |
| Watchdog | No |
| Reverse Batt. Protect. | Yes |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOIC (N)/8 |
| Budgetary Price (See Notes) | $2.28 @1k |
Technical Docs
Click any title below to view the detail page where available.
Description
The MAXSANTAFEEVSYS kit allows users to quickly demonstrate and evaluate the functionality of the MAXREFDES5 4-channel 16-bit, isolated analog front end (AFE) reference design without the need for a bench power supply, signal generator equipment, or Xilinx development kit. The reference design board connects to a PC through an included USB-to-SPI adapter that provides both power and data communication to the board. To test the AFE reference design, a USB-powered signal generator board utilizing one of Maxim’s digital-to-analog converters (DAC) is also included. A Windows®-based graphical user interface (GUI) communicates with the boards for generating various analog signal test patterns and simplified access to AFE measurement data.
MAXSANTAFEEVSYS User Manual is available for download.
The MAXREFDES5 reference design is a 4-channel analog front end (AFE) that accepts -10V to +10V, 0V to 10V, and 4–20mA current loop signals. The design integrates a 16-bit ADC with multirange input programmability (MAX1301) plus low-noise, high-impedance analog buffers (MAX9632) on two of the input channels and an ultra-high precision 4.096V voltage reference (MAX6126) to achieve maximum performance from the 16-bit system. A 600VRMS digital isolator (MAX14850) and 3W transformer driver (MAX256) provide the necessary isolated data and power connections to the host system. LDO regulators (MAX1659) provide regulated +12V, -12V, and 5V power rails to the analog front end.
EV Kit Contents- MAXREFDES5 4-Channel AFE Board
- USB2PMB1 USB to Pmod™ Type 2A Adapter Board
- MAX5216DACLITE Signal Generator Board
- Two (2) Wires with Hook Clips (1 Red and 1 Black)
- Two (2) USB Type A Male to USB Type B Mini Cables
- USB Flash Drive with Documentation, GUI Applications, and USB Drivers
Features
- Self-Contained Easy Evaluation Kit for MAXREFDES5
- Optimized AFE with Common Analog Input Ranges
- Small Form Factor Test Platform
- All Relevant Reference Design Files Included
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Parameters
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 16.5 |
| Adj. VOUT (V) (min) | 1.25 |
| Adj. VOUT (V) (max) | 16 |
| Rated ILOAD (mA) | 350 |
| Preset VOUT (V) | 5 |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.65 |
| ICC (µA) (max) | 60 |
| Output Voltage Noise (µV RMS) (typ) | 2500 |
| Ref. Bypass | No |
| Low Batt./ Pwr. Fail Out | No |
| Watchdog | No |
| Reverse Batt. Protect. | Yes |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOIC (N)/8 |
| Budgetary Price (See Notes) | $2.28 @1k |
Key Features
- Wide Input Voltage Range: 2.7V to 16.5V
- Low, 490mV Dropout at 350mA Output Current (MAX1659)
- 30µA Supply Current
- 1µA Max Shutdown Current
- High-Power (1.2W) 8-Pin SO Package
- Dual Mode Operation Output:
- Fixed 3.3V (MAX1658)
- Fixed 5.0V (MAX1659)
- or Adjustable (1.25V to 16V)
- Thermal Overload Protection
- Current-Limit Protection
- Reverse Battery Protection
Applications/Uses
- Cell Phones
- Digital Cordless Phones
- Electronic Planners
- Handheld Instruments (PDAs, Palmtops)
- Modems
- Palmtop Computers
- PCMCIA Cards
- PCS Phones
Description
The MAX1658/MAX1659 feature a 1µA shutdown mode, reverse battery protection, short-circuit protection, and thermal shutdown. They are available in a special high-power (1.2W), 8-pin SO package designed specifically for compact applications.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
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