MIC38C45BMM-TR

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Microchip Technology

IC REG CTRLR MULT TOPOLOGY 8MSOP

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MIC38C45BMM-TR

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Microchip Technology

IC REG CTRLR MULT TOPOLOGY 8MSOP

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Description Specifications Series Pricing CAD Documents

Description

General part information

MIC38C45 Series

The MIC38C4x are fixed frequency, high performance, current-mode PWM controllers. BiCMOS devices are pin compatible with 384x bipolar devices but feature several improvements.

Undervoltage lockout circuitry allows the '42 and '44 versions to start up at 14.5V and operate down to 9V, and the '43 and '45 versions start at 8.4V with operation down to 7.6V. All versions operate up to 20V.

When compared to bipolar 384x devices operating from a 15V supply, start-up current has been reduced to 50µA typical and operating current has been reduced to 4.0 mA typical. Decreased output rise and fall times drive larger MOSFETs, and rail-to-rail output capability increases efficiency, especially at lower supply voltages. The MIC38C4x also features a trimmed oscillator discharge current and bandgap reference.

Technical Specifications

Parameters and characteristics for this part

Specification	MIC38C45BMM-TR

Clock Sync	No
Control Features	Frequency Control
Duty Cycle (Max)	50 %
Frequency - Switching	500 kHz
Function	Step-Up/Step-Down, Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package Length	0.118 in
Package Name	8-TSSOP, 8-MSOP, 8-MSOP
Package Width	3 mm
Synchronous Rectifier	Yes
Topology	Boost, Forward Converter, Flyback, Buck
Voltage - Supply (Vcc/Vdd) Maximum	20 V
Voltage - Supply (Vcc/Vdd) Minimum	7.6 V

MIC38C45 Series

20V, Current Mode SMPS Controller Family with Various UVLO and Max Duty Cycle

Part	Frequency - Switching	Output Configuration	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Function	Output Phases	Topology	Output Type	Clock Sync	Operating Temperature (Max)	Operating Temperature (Min)	Duty Cycle (Max)	Number of Outputs	Synchronous Rectifier	Package Name	Control Features	Mounting Type	Package Width	Package Length
Microchip Technology MIC38C45-1YM	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	14-SOIC	Frequency Control	Surface Mount	3.9 mm	0.154 in
Microchip Technology MIC38C45BMM-TR	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-MSOP 8-TSSOP 8-MSOP	Frequency Control	Surface Mount	3 mm	0.118 in
Microchip Technology MIC38C45ABMM-TR	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-MSOP 8-TSSOP 8-MSOP	Frequency Control	Surface Mount	3 mm	0.118 in
Microchip Technology MIC38C45YMM	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-MSOP 8-TSSOP 8-MSOP	Frequency Control	Surface Mount	3 mm	0.118 in
Microchip Technology MIC38C45YM-TR	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-SOIC	Frequency Control	Surface Mount	3.9 mm	0.154 in
Microchip Technology MIC38C45BMM	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-MSOP 8-TSSOP 8-MSOP	Frequency Control	Surface Mount	3 mm	0.118 in
Microchip Technology MIC38C45BN	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-DIP 8-PDIP	Frequency Control	Through Hole	7.62 mm	0.3 in
Microchip Technology MIC38C45-1YM-TR	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	14-SOIC	Frequency Control	Surface Mount	3.9 mm	0.154 in
Microchip Technology MIC38C45YN	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-DIP 8-PDIP	Frequency Control	Through Hole	7.62 mm	0.3 in
Microchip Technology MIC38C45ABM-TR	500 kHz	Isolation Capable Positive	7.6 V	20 V	Step-Down Step-Up Step-Up/Step-Down	1	Boost Buck Flyback Forward Converter	Transistor Driver	No	85 °C	-40 °C	50 %	1	Yes	8-SOIC	Frequency Control	Surface Mount	3.9 mm	0.154 in

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MIC38C45BMM-TR | Datasheet