The MAX1836/MAX1837 high-efficiency step-down converters provide a preset 3.3V or 5V output voltage from supply voltages as high as 24V. Using external feedback resistors, the output voltage may be adjusted from 1.25V to VIN. An internal current-limited switching MOSFET delivers load currents up to 125mA (MAX1836) or 250mA (MAX1837).
The unique current-limited control scheme, operating with duty cycles up to 100%, minimizes the dropout voltage (120mV at 100mA). Additionally, this control scheme reduces supply current under light loads to 12µA. High switching frequencies allow the use of tiny surface-mount inductors and output capacitors.
The MAX1836/MAX1837 step-down converters with
internal switching MOSFETs are available in 6-pin
SOT23 and 3mm x 3mm TDFN packages, making them
ideal for low-cost, low-power, space-sensitive applications.
For increased output drive capability, use the
MAX1776 step-down converter that uses an internal
24V switch to deliver up to 500mA. For even higher currents,
use the MAX1626/MAX1627 step-down controllers
that drive an external P-channel MOSFET to
deliver up to 20W.
Key Features
Applications/Uses
4.5V to 24V Input Voltage Range
Preset 3.3V or 5V Output
Adjustable Output from 1.25V to VIN
Output Currents Up to 125mA (MAX1836) or 250mA (MAX1837)
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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