Datasheet4U Logo Datasheet4U.com

MAX1742 - Step-Down Regulators

General Description

The MAX1742/MAX1842 constant-off-time, pulse-widthmodulated (PWM) step-down DC-DC converters are ideal for use in 5V and 3.3V to low-voltage conversion necessary in notebook and subnotebook computers.

Key Features

  • ±1% Output Accuracy.
  • 95% Efficiency.
  • Internal PMOS and NMOS Switches 90mΩ On-Resistance at VIN = 4.5V 110mΩ On-Resistance at VIN = 3V.
  • Output Voltage 2.5V, 1.8V, or 1.5V Pin Selectable 1.1V to VIN Adjustable.
  • 3V to 5.5V Input Voltage Range.
  • 600μA (max) Operating Supply Current.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
MAX17409 1-Phase Quick-PWM NVIDIA CPU Controller Maxim Integrated Products
MAX17410 Quick-PWM Controller Maxim Integrated Products
MAX17411 3-/2-/1-Phase + 2-/1-Phase Quick-PWM Controllers Maxim Integrated
MAX17435 High-Frequency Low-Cost SMBus Chargers Maxim Integrated Products
MAX1744 Step-Down DC-DC Controllers Analog Devices

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX174 Complete 12-Bit ADCs
MAX1740 SIM/Smart Card Level Translators
MAX17401 1-Phase Quick-PWM Intel IMVP-6/GMCH Controller
MAX1741 SIM/Smart Card Level Translators
MAX1744 High-Voltage / Step-Down DC-DC Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
MAX1742/MAX1842 19-1760; Rev 2; 9/05 EVAALVUAAILTAIOBNLEKIT 1A/2.7A, 1MHz, Step-Down Regulators with Synchronous Rectification and Internal Switches General Description The MAX1742/MAX1842 constant-off-time, pulse-widthmodulated (PWM) step-down DC-DC converters are ideal for use in 5V and 3.3V to low-voltage conversion necessary in notebook and subnotebook computers. These devices feature internal synchronous rectification for high efficiency and reduced component count. They require no external Schottky diode. The internal 90mΩ PMOS power switch and 70mΩ NMOS synchronous-rectifier switch easily deliver continuous load currents up to 1A. The MAX1742/MAX1842 produce a preset 2.5V, 1.8V, or 1.5V output voltage or an adjustable output from 1.1V to VIN.