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MAX1515 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX1515 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 24 page Low-Voltage, Internal Switch, Step-Down/DDR Regulator _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 1, VIN = +3.3V, VCC = VDD = SHDN = MODE = +3.3V, VREFIN = VREF, SKIP = GND, TA = 0°C to +85°C, unless oth- erwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Sink-Mode Detect Threshold VFB - VREFIN MODE = VCC, VREFIN = +0.5V to +1.5V +18 +32 mV Source-Mode Detect Threshold VFB - VREFIN MODE = VCC, VREFIN = +0.5V to +1.5V -32 -18 mV MOSFET On-Resistance RNMOS VCC = VDD = VIN = +3.3V, ILOAD = 0.5A 0.04 0.10 Ω Switching Frequency fSW (Note 2) 1 MHz Maximum Output Current IOUT(RMS) (Note 3) 3.3 A ILIMIT_P VIN = +3.3V, MODE = GND or VCC, positive or sourcing mode 3.60 4.2 4.85 Current-Limit Threshold ILIMIT_N MODE = VCC, negative or sinking mode -3.0 A Pulse-Skipping Current Threshold ISKIP_P VIN = +3.3V, MODE = GND or VCC, positive or sourcing mode 0.5 0.8 1.1 A IZX_P VIN = +3.3V, MODE = GND or VCC, positive or sourcing mode 200 Zero Cross Current Threshold IZX_N MODE = VCC, negative or sinking mode -350 mA FB Input Bias Current FB = 1.01 x VTARGET (Note 4) -50 +50 nA RTOFF = 33.2k Ω 0.270 0.34 0.405 RTOFF = 110k Ω 0.85 1.00 1.15 Off-Time tOFF VFB > 0.3 x VTARGET (Note 4) RTOFF = 499k Ω 3.8 4.5 5.2 µs Extended Off-Time tOFF(EXT) VFB < 0.3 x VTARGET (Notes 2, 4) 4 x tOFF µs Minimum On-Time tON(MIN) (Note 2) 180 ns Maximum On-Time tON(MAX) 511 µs SS Source Current ISS(SRC) 3.50 5.25 6.75 µA SS Sink Current ISS(SNK) 100 µA MODE = GND, FBSEL0 = GND, FBSEL1 = GND, VFB = 1.01 x VTARGET 450 800 No-Load Supply Current ICC + IDD + IIN VIN = 3.3V (not switching) (Note 4) MODE = VCC, VFB = VTARGET 700 1200 µA ICC + IDD + IIN SHDN = MODE = GND, LX = 0V or 3.3V 0.2 20 IIN SHDN = MODE = GND, LX = 0V 0.2 20 Shutdown Supply Currents ILX SHDN = MODE = GND, LX = 3.3V 0.1 20 µA |
Similar Part No. - MAX1515 |
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Similar Description - MAX1515 |
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