MIC38HC43YM

MIC38HC43YM, Current-Mode PWM Controller, SOIC, 5V, 1A, Micrel Semiconductor

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Price:: US $0.30~0.50 / piece [Get Latest Price]

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Qty (lots)	Price/lot
1 ~ 1000 :	0.50 / Piece
1001 ~ 10000 :	0.40 / Piece
10001 ~ 100000 :	0.30 / Piece

PartNumber:: MIC38HC43YM

Brand:: Micrel Semiconductor - Micrel | Pack: SOIC | D/C: 13+

Availability:: Supply Ability: 10000/Day Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2013-07-18

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Part Number:MIC38HC43YM
US $0.30 - 0.50
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Product Summary

The MIC38HC43YM is a Current-Mode PWM Controller. The MIC38HC43YM is fixed frequency current-mode PWM controllers with 1A drive current capability. Micrel’s BiCMOS devices are pin-compatible with 384x bipolar devices. Its 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. Under voltage 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. The applications of the MIC38HC43YM include 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.

Parametrics

MIC38HC43YM absolute maximum ratings: (1)Zener Current (VDD): 30mA; (2)Supply Voltage (VDD): 20V; (3)Switch Supply Voltage: 20V; (4)Current Sense Voltage: –0.3V to 5.5V; (5)Feedback Voltage: –0.3V to 5.5V; (6)Output Current: 1A; (7)Operating Junction Temperature: 150℃; (8)Storage Temperature: –65℃ to +150℃.

Features

MIC38HC43YM features: (1)Fast 20ns output rise and 15ns output fall times; (2)High-performance, low-power BiCMOS Process; (3)Ultralow start-up current (50μA typical); (4)Low operating current (4mA typical); (5)High output drive (1A peak current, HC version); (6)CMOS outputs with rail-to-rail swing; (7)Current-mode operation up to 500kHz; (8)Trimmed 5V bandgap reference; (9)Pin-for-pin compatible with UC3842/3843/3844/3845(A); (10)Trimmed oscillator discharge current; (11)UVLO with hysteresis; (12)Low cross-conduction currents.