MIC4575 Series

200kHz 1.0A Step-down Regulator

Catalog

200kHz 1.0A Step-down Regulator

Part	Output Type	Topology	Function	Output Configuration	Voltage - Input (Max)	Package / Case	Mounting Type	Current - Output	Number of Outputs	Voltage - Input (Min)	Voltage - Output (Min/Fixed)	Operating Temperature (Max)	Operating Temperature (Min)	Synchronous Rectifier	Frequency - Switching	Package Name	Package Leads	Voltage - Output (Max)
Microchip Technology MIC4575-5.0BT	Fixed	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V	TO-220-5	Through Hole	1.7 A	1	4 V	5 V	85 °C	-40 °C	No	200 kHz	TO-220-5
Microchip Technology MIC4575-5.0WT	Fixed	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V	TO-220-5	Through Hole	1.7 A	1	4 V	5 V	85 °C	-40 °C	No	200 kHz	TO-220-5
Microchip Technology MIC4575WU-TR	Adjustable	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	1.23 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads	20 V
Microchip Technology MIC4575-3.3WU-TR	Fixed	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	3.3 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads
Microchip Technology MIC4575-5.0WU	Fixed	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	5 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads
Microchip Technology MIC4575-5.0BU TR	Fixed	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	5 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads
Microchip Technology MIC4575WT	Adjustable	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V	TO-220-5	Through Hole	1.7 A	1	4 V	1.23 V	85 °C	-40 °C	No	200 kHz	TO-220-5		20 V
Microchip Technology MIC4575BU	Adjustable	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	1.23 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads	20 V
Microchip Technology MIC4575-3.3WU	Fixed	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	3.3 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads
Microchip Technology MIC4575WU	Adjustable	Buck Buck-Boost	Step-Down Step-Up/Step-Down	Positive	24 V		Surface Mount	1.7 A	1	4 V	1.23 V	85 °C	-40 °C	No	200 kHz	D2PAK TO-263-5	5 Leads	20 V

Catalog

200kHz 1.0A Step-down Regulator

Description

The MIC4575 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200kHz MIC4575 duplicates the pinout and function of the 52kHz LM2575. The higher switching frequency may allow up to a 2:1 reduction in output filter inductor size. The MIC4575 is available in 3.3V, and 5V fixed output versions or a 1.23V to 20V adjustable output version. Both versions are capable of driving a 1A load with excellent line and load regulation. The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified voltages and load conditions. The oscillator frequency is guaranteed to ±10%. In shutdown mode, the regulator draws less than 200µA standby current. The regulator performs cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions. This series of simple switch-mode regulators requires a minimum number of external components and can operate using a standard series of inductors. Frequency compensation is provided internally. The MIC4575 is available in TO-220 (T) and TO-263 (U) packages for the industrial temperature range.