MIC2295 Micrel Semiconductor, MIC2295 Datasheet
MIC2295
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MIC2295 Summary of contents
Page 1
... General Description The MIC2295 is a 1.2Mhz, PWM dc/dc boost switching regulator available in low profile Thin SOT23 and 2mm x 2mm MLF package options. High power density is achieved with the MIC2295’s internal 34V / 1.2A switch, allowing it to power large loads in a tiny footprint. The MIC2295 implements constant frequency 1 ...
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... Micrel Ordering Information Part Number Standard Lead-Free MIC2295BD5 MIC2295YD5 MIC2295BML MIC2295YML Pin Configuration Pin Description MIC2295BD5 MIC2295BML Thin SOT-23-5 2x2 MLF- July 2004 Output Over Voltage Marking Code Protection Standard Lead-Free - SVAA 34V SXA ...
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... V = 10V EN SW TURN ON TURN OFF V = 10V EN MIC2295BML only Hysteresis , the junction-to-ambient thermal resistance, 3 (2) ) …………………..…… …… -40°C to +125°C J 2x2 MLF-8L lead …………………… ...
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... Micrel Typical Characteristics MIC2295 -5V Output Vin=4V 45 Vin=5V 40 Vin=5. 100 200 300 Output Current 15V Short circuit protected Boost Vin=2.5 V Vin= 100 OUTPUT CURRENT (mA) July 2004 C3 1uF/16V VIN MIC2295BML 6 ...
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... Micrel MIC2295 SEPIC 5V Output Vin=3V Vin=3.5V 68 Vin=4V Vin=5V 66 Vin=5. 100 150 200 250 OUTPUT CURRENT (mA) 5V MIC2295 SEPIC with one coupled inductor Vin=2 Vin=3 Vin= 100 150 200 250 300 LOAD CURRENT (mA) ...
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... Current Limit vs. Temperature 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -40 - 100 120 TEMPERATURE (°C) FB Pin Current vs. Temperature 700 600 500 400 300 200 100 0 -40 - 100 120 TEMPERATURE (°C) 6 MIC2295 Load Regulation 12.2 12.15 12.1 12.05 12 11.95 11.9 V 3.6V = 11. 100 125 150 LOAD (mA) M9999-052402 (408) 955-1690 ...
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... Line Transient Response Time (400µs/div) July 2004 4.2V 3.2V 12V OUT 150mA Load Enable Characteristics V 3.6V IN 12V OUT 150mA Load TIME (400µs/div.) 7 Switching Waveforms Output Voltage Inductor Current (10µ 3.6V IN 12V OUT 150mA Time (400ns/div 3.6V IN =3.6V IN M9999-052402 (408) 955-1690 MIC2295 ...
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... Micrel Functional Description The MIC2295 is a high power density, PWM dc/dc boost regulator. The block diagram is shown in Figure 1. The MIC2295 is composed of an oscillator, slope compensation ramp generator, current amplifier, gm error amplifier, PWM generator, and a 1.2A bipolar output transistor. The oscillator generates a 1.2MHz clock. The clock’s two functions ...
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... Increasing the inductor value reduces peak current, which in turn reduces energy transfer in each cycle. Over Voltage Protection For MLF package of MIC2295, there is an over voltage protection function. If the feedback resistors are disconnected from the circuit or the feedback pin is shorted to ground, the feedback pin will fall to ground potential ...
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... MIC2295, with short traces for good noise performance. Feedback Resistors The MIC2295 utilizes a feedback pin to compare the output to an internal reference. The output voltage is adjusted by selecting the appropriate feedback resistor values. The desired output voltage can be calculated as follows ...
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... IN IN OUT 10µH MIC2295BML VIN SW C1 OVP 10V EN FB GND 3V – 12V @ 120mA IN IN OUT 4.7µH D1 MIC2295BML VIN 5.62k OVP 4.7µF 6. GND 400mA IN IN OUT L1 D1 10µH MIC2295BML VIN SW C1 OVP EN FB GND ...
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... Micrel Package Information July 2004 8-Pin Package MLF (ML) 12 MIC2295 M9999-052402 (408) 955-1690 ...
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... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. July 2004 © 2004 Micrel, Incorporated. 13 MIC2295 M9999-052402 (408) 955-1690 ...