Description
The MAX1776 high-efficiency step-down converter provides an adjustable output voltage from 1.25V to VIN from supply voltages as high as 24V. An internal current-limited 0.4Ω MOSFET delivers load currents up to 600mA. Operation to 100% duty cycle minimizes dropout voltage (240mV at 600mA).
The MAX1776 has a low 15µA quiescent current to improve light-load efficiency and conserve battery life. The device draws only 3µA while in shutdown.
High switching frequencies (up to 200kHz) allow the use of tiny surface-mount inductors and output capacitors. The MAX1776 is available in an 8-pin µMAX package, which uses half the space of an 8-pin SO. For increased output drive capability, use the MAX1626/ MAX1627 step-down controllers, which drive an external P-channel MOSFET to deliver up to 20W.
An evaluation kit is available: MAX1776EVKIT 
Key Features
Applications
| Key Specifications: Step-Down Switching Regulators | ||||||||||||||||||||
| Part Number | VIN (V) |
VIN (V) |
VOUT (V) |
VOUT (V) |
Preset VOUT (V) |
Max. IOUT (A) |
Max. IOUT (A) |
Output Adjust. Method | DC-DC Outputs | Oper. Freq. (kHz) |
Package/Pins | Smallest Available Pckg. (mm2) | ||||||||
| min | max | min | max | ≥ | ≤ | max w/pins | ||||||||||||||
| MAX1776 | 4.5 | 24 | 1.25 | 24 | 5 | 0.6 | 0.6 |
|
1 | 200 |
|
16.2 | ||||||||
| See All Step-Down Switching Regulators (264) | ||||||||||||||||||||
| Diagram |
 Typical Operating Circuit |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com
