MIC22205YML EV: 1.8V @ 2A, 2.9 ~ 5V in, Buck

Summary

The Micrel MIC22205 is a high-efficiency, 2A, integrated switch, synchronous buck (Step-down) regulator. It is frequency programmable up to 4 MHz. The MIC22205 achieves more than 95% Efficiency and switches at 1 MHz. The ultra-high-speed control loop keeps the output voltage within regulation even when under the extreme transient load swings commonly found in FPGAs and low-voltage ASICs. The output voltage is pre-bias safe and is adjustable down to 0.7 V.

The MIC22205 offers a full range of sequencing and tracking options. The Enable/Delay (EN/DLY) and Power Good (PG) inputs allow versatile turn-on and turn-off sequencing across multiple devices. The Ramp Control™ (RC) input allows start-up voltage tracking, either directly or ratio-metrically.

The MIC22205YML EV requires a power supply of 2.9 to 5.5V, and a test load. Make sure that the power supply can provide the wattage needed for the chosen load. The load can be active (electronic load) or passive (resistor). Additionally, monitor the Power Good output (PG) with a multimeters or oscilloscope.

Specifications

Manufacturer	Microchip Technology
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	576-4538-ND
Eval Board Supplier	Microchip Technology
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.8 V
Current Out	2 A
Voltage In	2.9 ~ 5.5 V
Efficiency @ Conditions	>82%, 5V in, 1.8V @ 0.1 @ 2 A >80%, 3.3V in, 1.8V @ 0.01 ~ 2 A
Voltage Out Range	0.7 ~ Vin
Features	Current Limit (Adj. or Fixed) Power Good Output Pre-Biased Startup Shutdown, Enable, Standby Thermal Protection Voltage Tracking
Switching Frequency	1 MHz
Standby Current [Typical]	5 µA
Quiescent Current [Typical]	1.3 mA
Component Count + Extras	17 + 16
Internal Switch	Yes
Design Author	Microchip Technology
Application / Target Market	DVD/Blu-ray Players FPGA / DSP / Processors Point of Load (PoL) Servers
Standby Current [Maximum]	10 µA
Quiescent Current [Maximum]	2 mA
Main I.C. Base Part	MIC22205YML
Date Created By Author	2012-09
Date Added To Library	2022-08