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MAX1700EEE Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1700EEE Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 16 page Input High Voltage (Note 7) 1-Cell to 3-Cell, High-Power (1A), Low-Noise, Step-Up DC-DC Converters _______________________________________________________________________________________ 5 Note 1: Operating voltage. Since the regulator is bootstrapped to the output, once started it will operate down to 0.7V input. Note 2: Start-up is tested with the circuit of Figure 2. Note 3: In low-power mode (CLK/SEL = GND), the output voltage regulates 1% higher than low-noise mode (CLK/SEL = OUT or synchronized). Note 4: The regulator is in start-up mode until this voltage is reached. Do not apply full load current. Note 5: Load regulation is measured from no-load to full load where full load is determined by the N-channel switch current limit. Note 6: Supply current from the 3.30V output is measured between the 3.30V output and the OUT pin. This current correlates directly to the actual battery supply current, but is reduced in value according to the step-up ratio and efficiency. Set VOUT = 3.6V to keep the internal switch open when measuring the current into the device. Note 7: ONA and ONB have hysteresis of approximately 0.15xVOUT. Note 8: Specifications to -40°C are guaranteed by design and not production tested. ELECTRICAL CHARACTERISTICS (continued) (CLK/SEL = ONA = ONB = FB = PGND = GND, OUT = POUT, VOUT = 3.6V, MAX1701: AIN = LBN = GND, LBP = REF, TA = -40°C to +85°C, unless otherwise noted.) (Note 8) CONDITIONS 2.5V < VOUT < 5.5V, CLK/SEL 1.2V < VOUT < 5.5V, ONA and ONB 0.2VOUT V 0.2VOUT Input Low Voltage (Note 7) 1.2V < VOUT < 5.5V, ONA and ONB 0.8VOUT Input High Voltage (Note 7) ONA, ONB, and CLK/SEL 2.5V < VOUT < 5.5V, CLK/SEL µA -1 1 Logic Input Current V 0.8VOUT CLK/SEL = OUT kHz 260 340 Internal Oscillator Frequency UNITS MIN TYP MAX PARAMETER % 80 92 Oscillator Maximum Duty Cycle kHz 200 400 External Clock Frequency Range Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 100 90 40 0.1 1 10 100 1000 EFFICIENCY vs. LOAD CURRENT (VOUT = 3.3V) 50 LOAD CURRENT (mA) 60 70 80 PFM PWM VIN = 0.9V VIN = 1.2V VIN = 2.4V 100 90 40 30 0.1 1 10 100 1000 EFFICIENCY vs. LOAD CURRENT (VOUT = 5V) 50 LOAD CURRENT (mA) 60 70 80 VIN = 1.2V VIN = 2.4V VIN = 3.6V PFM PWM 0 2.0 1.0 4.0 3.0 6.0 5.0 7.0 02 3 1 456 MAX1701 SHUTDOWN CURRENT vs. INPUT VOLTAGE (V) INPUT VOLTAGE (V) T = 85°C T = 25°C T = -40°C LOGIC AND CONTROL INPUTS |
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