MIC38HC43YM More Semiconductors - ICs by Microchip Technology

BiCMOS 1A Current-Mode PWM Controller

Status: Active
Series: MIC38HC43
RoHS: Compliant
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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. MIC38HC4x-1 is available in 14-pin plastic DIP and SOIC packages. 8-pin devices feature small size, while 14-pin devices separate the analog and power connections for improved performance and power dissipation.

Prices starting from US$1.37


Distributor Starting From Stock
Logo for Microchip Technology Microchip Technology US$1.37
4,940
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Logo for Newark Electronics Newark Electronics US$1.50
854
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Logo for Future Electronics Future Electronics US$1.55
-
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Logo for Avnet America Avnet America US$1.90
-
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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
Ultra-low 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

Specifications

Supported Topologies Forward,Flyback
Supported Outputs 1
Minimum Input Voltage (V) 7.6
Maximum Input Voltage (V) 20
Typical Tolerance (%) ±2
Duty Cycle Max (%) 0.96
Operating Frequency (Hz) Adj. to 500kHz
Internal Voltage Bias True
Input UVLO Typ (V) 8.4
Operating Supply Current (mA) 4
Package 8/PDIP, 8/SOIC, 14/PDIP, 14/SOIC
Pins | Packaging 8 | SOIC
Temp Range -40C to +85C
Packing Media Tube (95)

Environmental Information

JEDEC Indicator e4
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.075
Shipping Weight (kg) 0.163265
Lead Count 8
Package Type SOIC
Package Width or Size 3.90mm(.150in)
Soldering Composition NiPdAu

Alternative Descriptions

Monolithic High Speed SMPS Controller | Microchip Technology
Pwm Ctrl, Current Mode, 7.6-20V, Soic-8 | Newark Electronics
PWM CTRL, CURRENT MODE, 7.6-20V, SOIC-8 | Farnell
MIC38HC43 Series 6 mA 500 kHz SMT BiCMOS Current-Mode PWM Controller - SOIC-8 | Future Electronics
Current Mode PWM Controller 4.9V to 5.1V 1000mA 8-Pin SOIC Tube | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a MIC38HC43YM?

Additional datasheets, footprints and schematics for MIC38HC43YM are listed on our Part Details page. You can also find images and similar parts to MIC38HC43YM on this page.

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What category does MIC38HC43YM fall under?

The MIC38HC43YM is listed under Semiconductors - ICs > More Semiconductors - ICs.

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Is the MIC38HC43YM RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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Authorised distributors including Microchip Technology, Newark Electronics, Farnell, Future Electronics and Avnet America have stock available or on a lead time for MIC38HC43YM.

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