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Home  PMIC - AC DC Converters, Offline Switchers  MIC38HC44-1BM Datasheets | PMIC - AC DC Converters, Offline Switchers IC REG CTRLR PWM CM 14-SOIC

Oct 15 2020

MIC38HC44-1BM Datasheets | PMIC - AC DC Converters, Offline Switchers IC REG CTRLR PWM CM 14-SOIC

Product Overview

Image:
MIC38HC44-1BM
Manufacturer Part#: MIC38HC44-1BM
Product Category: PMIC - AC DC Converters, Offline Switchers
Stock: No
Manufacturer: Microchip Technology
Description: IC REG CTRLR PWM CM 14-SOIC
Datasheet: MIC38HC42, 43, 44, 45
Package: 14-SOIC (0.154", 3.90mm Width)
Minimum: 1
Lead Time: 3(168 Hours)
Quantity: On Order
Send RFQ: Inquiry

Reference Price

Qty Unit Price Ext. Price
432: 2.09160 903.57120

MIC38HC44-1BM Images are for reference only.

MIC38HC44-1BM

CAD Models

Product Attributes

Manufacturer: Microchip Technology
Series: -
Packaging: Bulk
Part Status: Discontinued at Digi-Key
Output Isolation: Isolated
Internal Switch(s): Yes
Voltage - Breakdown: -
Topology: Boost Buck Flyback Forward
Voltage - Start Up: 14.5V
Voltage - Supply (Vcc/Vdd): 9V ~ 20V
Duty Cycle: 50%
Frequency - Switching: 500kHz
Fault Protection: -
Control Features: Frequency Control
Operating Temperature: -40°C ~ 150°C (TJ)
Package / Case: 14-SOIC (0.154" 3.90mm Width)
Supplier Device Package: 14-SOIC
Mounting Type: Surface Mount
Base Part Number: MIC38HC44

Descriptions

There is no relevant information available for this part yet.

FEATURES

General Description

The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. Micrel’s 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.

Features

• Fast 20ns output rise and 15ns output fall times
• –40°C to +85°C temperature range exceeds UC284x specifications
• High-performance, low-power BiCMOS Process
• Ultralow start-up current (50µA typical)
• Low operating current (4mA typical)
• High output drive (1A peak current, HC version)
• CMOS outputs with rail-to-rail swing
• Current-mode operation up to 500kHz
• Trimmed 5V bandgap reference
• Pin-for-pin compatible with UC3842/3843/3844/3845(A)
• Trimmed oscillator discharge current
• UVLO with hysteresis
• Low cross-conduction currents

Applications

• Current-mode, off-line, switched-mode power supplies
• Current-mode, dc-to-dc converters.
• Step-down “buck” regulators
• Step-up “boost” regulators
• Flyback, isolated regulators
• Forward converters
• Synchronous FET converters

 

Environmental & Export Classifications

Description Value
RoHS Status: RoHS non-compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Documents & Media

Datasheets: MIC38HC42, 43, 44, 45
HTML Datasheet: MIC38HC42, 43, 44, 45

Product Manufacturer

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.

Distributors

Image PartNo Manufacturer Descriptions Stock Step Price
MIC38HC44-1BM MIC38HC44-1BM Microchip Technology IC REG CTRLR PWM CM 14-SOIC   On Order

432:$2.09160

MIC38HC44-1BM MIC38HC44-1BM Microchip Technology Inc Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDSO14, PLASTIC, SOIC-14   On Order

N/A

Popularity by Region

  • 1. South Korea
    100

MIC38HC44-1BM Popularity by Region

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  • Product Attributes
  • Descriptions
  • Features
  • CAD Models
Manufacturer: Microchip Technology
Series: -
Packaging: Bulk
Part Status: Discontinued at Digi-Key
Output Isolation: Isolated
Internal Switch(s): Yes
Voltage - Breakdown: -
Topology: Boost Buck Flyback Forward
Voltage - Start Up: 14.5V
Voltage - Supply (Vcc/Vdd): 9V ~ 20V
Duty Cycle: 50%
Frequency - Switching: 500kHz
Fault Protection: -
Control Features: Frequency Control
Operating Temperature: -40°C ~ 150°C (TJ)
Package / Case: 14-SOIC (0.154" 3.90mm Width)
Supplier Device Package: 14-SOIC
Mounting Type: Surface Mount
Base Part Number: MIC38HC44

There is no relevant information available for this part yet.

FEATURES

General Description

The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. Micrel’s 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.

Features

• Fast 20ns output rise and 15ns output fall times
• –40°C to +85°C temperature range exceeds UC284x specifications
• High-performance, low-power BiCMOS Process
• Ultralow start-up current (50µA typical)
• Low operating current (4mA typical)
• High output drive (1A peak current, HC version)
• CMOS outputs with rail-to-rail swing
• Current-mode operation up to 500kHz
• Trimmed 5V bandgap reference
• Pin-for-pin compatible with UC3842/3843/3844/3845(A)
• Trimmed oscillator discharge current
• UVLO with hysteresis
• Low cross-conduction currents

Applications

• Current-mode, off-line, switched-mode power supplies
• Current-mode, dc-to-dc converters.
• Step-down “buck” regulators
• Step-up “boost” regulators
• Flyback, isolated regulators
• Forward converters
• Synchronous FET converters

 

There is no relevant information available for this part yet.