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MAX1637 Datasheet Miniature / Low-voltage / Precision Step-down Controller

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-1321; Rev 1; 2/98 KIT ATION EVALU LE B A IL A AV Miniature, Low-Voltage, Precision Step-Down.

General Description

____________________________Features o ±2% DC Accuracy o 0.1% (typ) DC Load Regulation o Adjustable Switching Frequency to 350kHz o Idle Mode™ Pulse-Skipping Operation o 1.10V to 5.5V Adjustable Output Voltage o 3.15V Minimum IC Supply Voltage (at VCC pin) o Internal Digital Soft-Start o 1.1V ±2% Reference Output o 1µA Total Shutdown Current o Output Overvoltage Crowbar Protection o Output Undervoltage Shutdown (foldback) o Tiny 16-Pin QSOP Package MAX1637 The MAX1637 synchronous, buck, switch-mode powersupply controller generates the CPU supply voltage in battery-powered systems.

The MAX1637 is a strippeddown version of the MAX1636 in a smaller 16-pin QSOP package.

The MAX1637 is intended to be powered separately from the battery by an external bias supply (typically the +5V system supply) in applications where the battery exceeds 5.5V.

Key Features

  • o ±2% DC Accuracy o 0.1% (typ) DC Load Regulation o Adjustable Switching Frequency to 350kHz o Idle Mode™ Pulse-Skipping Operation o 1.10V to 5.5V Adjustable Output Voltage o 3.15V Minimum IC Supply Voltage (at VCC pin) o Internal Digital Soft-Start o 1.1V ±2% Reference Output o 1µA Total Shutdown Current o Output Overvoltage Crowbar Protection o Output Undervoltage Shutdown (foldback) o Tiny 16-Pin QSOP Package MAX1637 The MAX1637 synchronous, buck, switch-mode powersupply controller generate.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
MAX1630 Multi-Output / Low-Noise Power-Supply Controllers
MAX1631 Multi-Output / Low-Noise Power-Supply Controllers
MAX1632 Multi-Output / Low-Noise Power-Supply Controllers
MAX1634 Multi-Output / Low-Noise Power-Supply Controllers
MAX1635 Multi-Output / Low-Noise Power-Supply Controllers
MAX1636 Low-Voltage / Precision Step-Down Controller
MAX1638 High-Speed Step-Down Controller
MAX1639 High-Speed Step-Down Controller
MAX160 uP Compatible 8 Bit A/D Converter
MAX1600 Dual-Channel CardBus and PCMCIA VCC/VPP Power-Switching Networks

MAX1637 Distributor