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MAX1684-MAX1685 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX1684-MAX1685 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 16 page Low-Noise, 14V Input, 1A, PWM Step-Down Converters _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VIN = V SHDN = +6V, STBY = SYNC/PWM = CVL, VBOOT = VOUT, FB = AGND, circuit of Figure 1, TA = 0°C to +85°C, unless other- wise noted. Typical values are at TA = +25°C.) STBY = low, VIN = 2.7V CONDITIONS µA 230 430 Quiescent Supply Current in Dropout UNITS MIN TYP MAX SYMBOL PARAMETER SHDN = low µA 26 Shutdown Supply Current MAX1684 260 300 340 MAX1684 180 350 VIN = 14V, VLX = 0 or 14V, SHDN = low SYNC Capture Range MAX1685 kHz 520 600 680 fOSC Oscillator Frequency µA 20 ILX LX Leakage Current % 100 Maximum Duty Cycle (Note 3) % 20 MAX1685 Constant-Frequency Minimum Duty Cycle 10 -1µA < IREF < 50µA mV 415 Reference Load Regulation VIN = 3V to 14V, BOOT = AGND, ICVL = 0 to 5mA V 2.7 3.0 3.15 IREF = 0 CVL Regulator Output Voltage 2.7V < VBOOT < 5.5V mV 0.2 5 Reference Supply Regulation V 1.238 1.251 1.264 VREF Reference Output Voltage kHz 360 700 MAX1684 MAX1685 BOOT = AGND, ICVL = 5mA mV 120 CVL Dropout Voltage Typical hysteresis is 10°C (Note 4) °C 160 Thermal Shutdown Threshold BOOT falling edge, typical hysteresis is 0.1V V 2.4 2.5 2.6 BOOT Switchover Threshold ICVH = -1mA V -5.0 -4.6 -4.1 CVH with Respect to VIN SHDN, STBY, SYNC/PWM V 2 VIH Logic Input High Voltage VILIM/SS = 1.4V µA 3.3 4 4.65 ILIM/SS Source Current High or low period ns 500 SYNC/PWM Pulse Width SHDN, STBY, SYNC/PWM µA -1 1 Logic Input Current 0.7 VIL Logic Input Low Voltage BOOT = AGND, CVL falling edge, typical hysteresis is 40mV V 2.4 2.5 2.6 CVL Undervoltage Lockout Threshold V |
Similar Part No. - MAX1684-MAX1685 |
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Similar Description - MAX1684-MAX1685 |
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