MIC38C43AYM

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Microchip Technology

20V, CURRENT MODE SMPS CONTROLLER FAMILY WITH VARIOUS UVLO AND MAX DUTY CYCLE

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MIC38C43AYM

Active

Microchip Technology

20V, CURRENT MODE SMPS CONTROLLER FAMILY WITH VARIOUS UVLO AND MAX DUTY CYCLE

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Description Specifications Series Pricing CAD Documents

Description

General part information

MIC38C43 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	MIC38C43AYM

Clock Sync	No
Control Features	Frequency Control
Duty Cycle (Max)	96 %
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	0.154 in
Package Name	8-SOIC
Package Width	3.9 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

MIC38C43 Series

Part	Synchronous Rectifier	Topology	Mounting Type	Function	Operating Temperature (Max)	Operating Temperature (Min)	Frequency - Switching	Package Name	Number of Outputs	Clock Sync	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Output Phases	Package Width	Package Length	Output Type	Output Configuration	Control Features	Duty Cycle (Max)
Microchip Technology MIC38C43-1YM	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	14-SOIC	1	No	7.6 V	20 V	1	3.9 mm	0.154 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43AYMM	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-MSOP 8-TSSOP 8-MSOP	1	No	7.6 V	20 V	1	3 mm	0.118 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43BN	Yes	Boost Buck Flyback Forward Converter	Through Hole	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-DIP 8-PDIP	1	No	7.6 V	20 V	1	7.62 mm	0.3 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43-1BN	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	14-DIP	1	No	7.6 V	20 V	1	7.62 mm	0.3 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43BMM	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-MSOP 8-TSSOP 8-MSOP	1	No	7.6 V	20 V	1	3 mm	0.118 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43ABMM	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-MSOP 8-TSSOP 8-MSOP	1	No	7.6 V	20 V	1	3 mm	0.118 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43XYM-TR	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-SOIC	1	No	7.6 V	20 V	1	3.9 mm	0.154 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43-1BM-TR	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	14-SOIC	1	No	7.6 V	20 V	1	3.9 mm	0.154 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43AYM-TR	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-SOIC	1	No	7.6 V	20 V	1	3.9 mm	0.154 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %
Microchip Technology MIC38C43AYMM-TR	Yes	Boost Buck Flyback Forward Converter	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	85 °C	-40 °C	500 kHz	8-MSOP 8-TSSOP 8-MSOP	1	No	7.6 V	20 V	1	3 mm	0.118 in	Transistor Driver	Isolation Capable Positive	Frequency Control	96 %