MIC38HC45YN

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Microchip Technology

MONOLITHIC SMPS CONTROLLER 8 PDIP .300IN TUBE ROHS COMPLIANT: YES

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MIC38HC45YN

Active

Microchip Technology

MONOLITHIC SMPS CONTROLLER 8 PDIP .300IN TUBE ROHS COMPLIANT: YES

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Description Specifications Series Pricing CAD Documents

Description

General part information

MIC38HC45 Series

The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. BiCMOS devices are pin-compatible with 384x bipolar devices. Their high output drive, with fast rise and fall times, combined with low startup current make it an ideal PWM controller where high efficiency is required.

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 UC384x 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 MIC38HC4x also features a trimmed oscillator discharge current and bandgap reference.

Technical Specifications

Parameters and characteristics for this part

Specification	MIC38HC45YN

Clock Sync	No
Control Features	Frequency Control
Duty Cycle (Max)	50 %
Function	Step-Up/Step-Down, Step-Down, Step-Up
Mounting Type	Through Hole
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	0.3 in
Package Name	8-DIP, 8-PDIP
Package Width	7.62 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

MIC38HC45 Series

Part	Duty Cycle (Max)	Number of Outputs	Synchronous Rectifier	Function	Mounting Type	Topology	Output Type	Package Width	Package Name	Package Length	Control Features	Output Configuration	Output Phases	Operating Temperature (Max)	Operating Temperature (Min)	Clock Sync	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum
Microchip Technology MIC38HC45-1YM	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	Boost Buck Flyback Forward Converter	Transistor Driver	3.9 mm	14-SOIC	0.154 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45-1BN	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount Through Hole	Boost Buck Flyback Forward Converter	Transistor Driver	7.62 mm	14-DIP	0.3 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45BM	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	Boost Buck Flyback Forward Converter	Transistor Driver	3.9 mm	8-SOIC	0.154 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45BM-TR	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	Boost Buck Flyback Forward Converter	Transistor Driver	3.9 mm	8-SOIC	0.154 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45YN	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Through Hole	Boost Buck Flyback Forward Converter	Transistor Driver	7.62 mm	8-DIP 8-PDIP	0.3 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45YM-TR	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	Boost Buck Flyback Forward Converter	Transistor Driver	3.9 mm	8-SOIC	0.154 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45YM	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	Boost Buck Flyback Forward Converter	Transistor Driver	3.9 mm	8-SOIC	0.154 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45-1BM	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	Boost Buck Flyback Forward Converter	Transistor Driver	3.9 mm	14-SOIC	0.154 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45BN	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Through Hole	Boost Buck Flyback Forward Converter	Transistor Driver	7.62 mm	8-DIP 8-PDIP	0.3 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V
Microchip Technology MIC38HC45-1YN	50 %	1	Yes	Step-Down Step-Up Step-Up/Step-Down	Through Hole	Boost Buck Flyback Forward Converter	Transistor Driver	7.62 mm	14-DIP	0.3 in	Frequency Control	Isolation Capable Positive	1	85 °C	-40 °C	No	7.6 V	20 V