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SOIC / 14

MIC38C42-1YM-TR

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Microchip Technology

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

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SOIC / 14

MIC38C42-1YM-TR

Active
Microchip Technology

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

Find alt

Description

General part information

MIC38C42 Series

**MIC38C42A/43A/44A/45A recommended for new designs.** 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

SpecificationMIC38C42-1YM-TR
Control FeaturesFrequency Control
Duty Cycle96 %
Frequency - Switching500 kHz
Internal Switch(s)Yes
Mounting TypeSurface Mount
Operating Temperature (Max)150 °C
Operating Temperature (Min)-40 °C
Output IsolationIsolated
Package Length0.154 in
Package Name14-SOIC
Package Width3.9 mm
TopologyBuck, Forward, Boost, Flyback
Voltage - Start Up14.5 V
Voltage - Supply (Vcc/Vdd) Maximum20 V
Voltage - Supply (Vcc/Vdd) Minimum9 V

Pricing

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CAD

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