Micrel Semiconductor, Inc.
San Jose, CA 95131
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Power Controllers offer 400 -µs overcurrent timeout delay.
Models MIC1640 and MIC2594 are hot-swap power controllers that operate from -19 to -80 V with 100 V surge protection. They allow safe insertion and removal of line cards from -48 V backplanes. Produced in 8-pin, SOIC packages, units control external N-channel MOSFET to provide inrush-current limiting and over-current protection. Each device provides either open-drain, active-HIGH or active-LOW...
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Power Controllers suit telecom and network applications.
Operating from -19 to -80 V with 100 V surge protection, hot-swap Models MIC2589 and MIC2595 control external N-channel MOSFET to provide inrush-current limiting and over-current protection. Units allow safe insertion/removal of line cards from live -48 V backplanes. Available in 14-pin, SOIC packages, controllers/sequencers feature separate Power-is-Good control outputs for multiple dc-dc...
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Power Distribution Switch has input voltage of 0.8 V.
MIC2044/45 Protected High-Side Power Switch features 30 mOhm maximum On-resistance and operating range of 0.8-5.5 V with continuous output current of 6 A. Other features include programmable current limit, short circuit protection, thermal shutdown, adjustable slew rate control, fault status flag, under-voltage lockout, and low quiescent current. Applications include PCs, laptops, PDAs, docking...
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DC/DC Controllers provide up to 20 A down to 0.8 V.
Models MIC2168/9 are high-speed, synchronous buck control ICs that provide point-of-load DC/DC conversion for networking, telecom, server, and storage applications. Model MIC2168 operates at fixed 1 MHz PWM operating frequency, while Model MIC2169 operates at 500 KHz. Capable of efficiencies over 95%, both operate from 3-14.5 V input, allowing devices to step voltage down in systems with 3.3, 5,...
Read More »PWM DC/DC Regulator provides 600 mA output current.
Housed in 3 x 3 mm MLFTM and MSOP 10-lead packages, 2 MHz PWM DC/DC step-down regulators provide power to low-voltage chip sets in space-sensitive applications. Model MIC2202 synchronous buck regulator steps voltages down from 2.3-5.5 V input and operates with 1 Ã-µF ceramic output capacitor and 2.2 Ã-µH chip inductor. Model MIC2204, similar in function to MIC2202, operates with 4.7...
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Low-Dropout Regulator has 3.0 A continuous output current.
With 0.9 V output voltage capability, MIC49300 dual supply LDO responds instantly to abrupt changes in load current. Main supply requires 400 mV headroom to maintain proper regulation, while second supply provides bias voltage to control circuit. Housed in S-Pak 5-lead package, product offers gain bandwidth of up to 10 MHz and supports input voltage as low as 1.4 V. Other features include thermal...
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Integrated Circuit acts as replacement for RF receivers.
Offered as alternative to discrete superregen receivers, QwikRadio(TM) MICRF008 RF receiver eliminates need for production tuning. Product incorporates sweep mode, which enables superheterodyne receivers to sweep RF bandwidth wide enough to emulate capture bandwidth of superregen receivers (9 MHz). Offered in 8-pin SOIC packaging, product has 300-440 MHz frequency range, 4.8 kbps max data-rate.
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DC/DC Controllers provide output voltages down to 0.8 V.
Models MIC2198/9, offering current capability of 20 A, can power CPUs, DSPs, and FPGAs with up to 95% efficiency. Input voltage range is 4.5-32 V, making them suitable for 5, 12, and 24 V power bus systems. Model MIC2198 operates at 500 kHz, while Model MIC2199 operates at 300 kHz. Both units are housed in 4 x 4 mm MLFTM 12-lead package, and provide PWM current mode control, cycle-by-cycle...
Read More »Power Controllers provide power supply tracking and sequencing.
Models MIC2584 and MIC2585 are dual-channel, hot swap power controllers available in 16-pin and 24-pin TSSOP packages, respectively. They operate from system supply voltages from 1.0-13.2 V with input surge protection up to 20 V. Model MIC2584's default output voltage mode is tracking, whereas Model MIC2585 can be configured for output voltage tracking or staggered-mode operation. Both devices...
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LDO Integrated Circuits provide power management.
Models MIC2213 and MIC2214 each consist of 2 low-dropout regulators, power-on reset supervisor, and open-drain driver with adjustable delay time. First regulator can source 150 mA of current, while second regulator can source 300 mA. Total current consumption is 48 Ã-µA. Suitable for portable applications, units are housed in 3 x 3 mm MicroLead Frame(TM) leadless package. They feature low...
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