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MIC2225-G4YMT Datasheet(PDF) 3 Page - Micrel Semiconductor |
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MIC2225-G4YMT Datasheet(HTML) 3 Page - Micrel Semiconductor |
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3 / 14 page  Micrel, Inc. MIC2225 October 2007 3 M9999-101107-B Absolute Maximum Ratings (1) Supply Voltage (VIN).......................................................+6V Output Switch Voltage (VSW) ..........................................+6V Output Switch Current (ISW)..............................................1A Logic Input Voltage (VEN,VLOWQ)........................ –0.3V to VIN Storage Temperature (Ts) .........................–60°C to +150°C ESD Rating (3).................................................................. 2kV Operating Ratings (2) Supply Voltage (VIN)..................................... +2.7V to +5.5V Logic Input Voltage (VEN,VLOWQ)........................ –0.3V to VIN Junction Temperature (TJ) ........................–40°C to +125°C Junction Thermal Resistance Thin MLF-10L ( θJA) ............................................90°C/W Electrical Characteristics DC/DC (4) VEN = VIN = 3.6V, L = 2.2µH; COUTDC/DC = 2.2µF, CLDO = 2.2µF; IOUTDC/DC = 100mA; CBIAS = 0.1µF VENLDO = 0V; TJ = 25°C, bold values indicate –40°C < TJ < +125°C; unless noted. Parameter Condition Min Typ Max Units UVLO Threshold Rising input voltage during turn-on 2.45 2.55 2.65 V UVLO Hysteresis 70 mV Switcher Ground Pin Current ENLDO = 0V, VFB = GND ; IL=0mA 850 1100 µA LDO Ground Pin Current EN = 0V 67 110 µA Ground Pin Current in Shutdown EN +ENLDO = 0V 0.2 5 µA Over-temperature Shutdown 160 °C Over-temperature Shutdown Hysteresis 23 °C Logic Low 0.2 V Enable Input Voltage Logic High 1.0 V VIL < 0.2V 0.1 1 µA Enable Input Current VIH > 1.0V 0.1 1 µA Turn-on Time ILOAD = 5mA 50 µs Fixed Output Voltages Nominal VOUT tolerance Io=50mA –2 –3 +2 +3 % % Current Limit in PWM Mode VFB = 0.9*VNOM 0.675 0.95 A Output Voltage Line Regulation VIN = 2.7V to 5.5V, ILOAD= 100mA 0.12 1 % % Output Voltage Load Regulation 20mA < ILOAD < 300mA 0.2 1.5 % Maximum Duty Cycle VFB ≤ 0.4V 100 % PWM Switch ON-Resistance ISW = 150mA; VFB = 0.7VFB_NOM ISW = -150mA; VFB = 1.1VFB_NOM 0.4 0.4 Ω Ω Oscillator Frequency 1.8 2 2.2 MHz |
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