MIC2127A Series

Catalog

IC REG CTRLR BUCK 16VQFN

Part	Topology	Output Type	Output Phases	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Number of Outputs	Package / Case	Function	Operating Temperature [Min]	Operating Temperature [Max]	Output Configuration	Mounting Type	Supplier Device Package	Frequency - Switching [Min]	Frequency - Switching [Max]
Microchip Technology MIC2127AYML-T5	Buck	Transistor Driver	1	75 V	4.5 V	1	16-VFQFN Exposed Pad	Step-Down	-40 °C	125 ¯C	Positive	Surface Mount	16-QFN (3x3)	200 kHz	800 kHz
Microchip Technology MIC2127AYML-TR	Buck	Transistor Driver	1	75 V	4.5 V	1	16-VFQFN Exposed Pad	Step-Down	-40 °C	125 ¯C	Positive	Surface Mount	16-QFN (3x3)	200 kHz	800 kHz
Microchip Technology MIC2127-AYML	Buck	Transistor Driver	1	75 V	4.5 V	1	16-VFQFN Exposed Pad	Step-Down	-40 °C	125 ¯C	Positive	Surface Mount	16-QFN (3x3)	200 kHz	800 kHz

Catalog

Key Features

• * Hyper Speed Control® architecture enables:

• * 4.5V to 75V input voltage

• * Adjustable output voltage from 0.6V to 30V

• * 200kHz to 800kHz programmable switching frequency

• * Internal soft start

• * Enable input and power good output

• * Built-in 5V regulator for single-supply operation

• * Programmable current limit and "hiccup" mode short-circuit protection

• * Mode pin for selecting CCM and DCM operation

• * Internal compensation, and thermal shutdown

• * Supports safe start-up into a pre-biased output

• * -40°C to +125°C junction temperature range

• * Available in 16-pin 3mm x 3mm QFN package

Description

The MIC2127A is a constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2127A operates over an input voltage range from 4.5V to 75V and can be used to supply load current up to 25A (Thermally Limited) . The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200kHz to 800kHz. The MIC2127A offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, Internal Soft Start, "hiccup" mode short-circuit protection, and thermal shutdown.