MIC38HC43YM

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Details for Microchip Technology

MIC38HC43YM

Monolithic High Speed SMPS Controller
Buy Directly from Microchip Technology (190 in Stock)
$1.5800 per unit
Series Information for MIC38HC43YM - Microchip Technology

Features

  • feature
    CMOS outputs with rail-to-rail swing
  • feature
    Current-mode operation up to 500kHz
  • feature
    High output drive (1A peak current, HC version)
  • feature
    High-performance, low-power BiCMOS Process
  • feature
    Low operating current (4mA typical)
  • feature
    Pin-for-pin compatible with UC3842/3843/3844/3845(A)
  • feature
    Trimmed 5V bandgap reference
  • feature
    Trimmed oscillator discharge current
  • feature
    UV
  • feature
    Ultralow start-up current (50u00b5A typical)
  • feature
    u201340u00b0C to +85u00b0C temperature range exceeds UC284x specifications

Description

PWM CTRL CURRENT MODE 7.6-20V SOIC-8
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 de- vices. 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 effi- ciency, 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.

Specifications

Input Voltage:
-
Output Voltage:
-
Output Current:
1A
Supply Voltage Min:
7.6V
Supply Voltage Max:
20V
Controller IC Case Style:
SOIC
No. of Pins:
8Pins
Frequency:
500kHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

Current Mode PWM Controller 4.9V to 5.1V 1000mA 8-Pin SOIC Tube

Avnet America product

Microchip Technology Inc

Monolithic High Speed SMPS Controller

Avnet Europe

Current Mode PWM Controller 4.9V to 5.1V 1000mA 8-Pin SOIC Tube

Avnet Europe product

Future Electronics

MIC38HC43 Series 6 mA 500 kHz SMT BiCMOS Current-Mode PWM Controller - SOIC-8