Datasheet MAX756, MAX757 (Maxim) - 2
| Manufacturer | Maxim |
| Description | 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters |
| Pages / Page | 9 / 2 — 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters. ABSOLUTE MAXIMUM … |
| File Format / Size | PDF / 302 Kb |
| Document Language | English |
3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters. ABSOLUTE MAXIMUM RATINGS. ELECTRICAL CHARACTERISTICS. PARAMETER
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Text Version of Document
MAX756/MAX757
3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters ABSOLUTE MAXIMUM RATINGS
Supply Voltage (OUT to GND) ..-0.3V, +7V Operating Temperature Ranges: Switch Voltage (LX to GND) ..-0.3V, +7V MAX75_C_ _ ..0°C to +70°C Auxiliary Pin Voltages (SHDN, LBI, LBO, REF, MAX75_E_ _..-40°C to +85°C 3/5, FB to GND) ..-0.3V, (VOUT + 0.3V) Junction Temperature ..+150°C Reference Current (IREF) ..2.5mA Storage Temperature Range... -65°to +160°C Continuous Power Dissipation (TA = +70°C) Lead Temperature (soldering, 10sec) ... +300°C Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW SO (derate 5.88mW/°C above +70°C) ..471mW Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuits of Figure 1 and Typical Operating Circuit, VIN = 2.5V, ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
MAX756, 3/5 = 0V, 0mA < ILOAD < 200mA 4.8 5.0 5.2 Output Voltage 2V < VIN < 3V MAX756, 3/5 = 3V, 0mA < ILOAD < 300mA 3.17 3.30 3.43 V MAX757, VOUT = 5V, 0mA < ILOAD < 200mA 4.8 5.0 5.2 Minimum Start-Up Supply Voltage ILOAD = 10mA 1.1 1.8 V Minimum Operating Supply ILOAD = 20mA 0.7 V Voltage (once started) Quiescent Supply Current in ILOAD = 0mA, 3/5 = 3V, LBI = 1.25V, VOUT = 3.47V, 60 µA 3.3V Mode (Note 1) FB = 1.3V (MAX757 only) Battery Quiescent Current Output set for 3.3V 60 µA Measured at VIN in Figure 1 Shutdown Quiescent Current SHDN = 0V, LBI = 1.25V, 3/5 = 3V, VOUT = 3.47V, 20 40 µA (Note 1) FB = 1.3V (MAX757 only) Reference Voltage No REF load, CREF = 0.1µF 1.23 1.25 1.27 V Reference-Voltage Regulation 3/5 = 3V, -20µA < REF load < 250µA, CREF = 0.22µF 0.8 2.0 % LBI Input Threshold With falling edge 1.22 1.25 1.28 V LBI Input Hysteresis 25 mV LBO Output Voltage Low ISINK = 2mA 0.4 V LBO Output Leakage Current LBO = 5V 1 µA SHDN, 3/5 Input Voltage Low 0.4 V SHDN, 3/5 Input Voltage High 1.6 V LBI = 1.25V, FB = 1.25V, SHDN = 0V or 3V, SHDN, 3/5, FB, LBI Input Current ±100 nA 3/5 = 0V or 3V FB Voltage MAX757 1.22 1.25 1.28 V Output Voltage Range MAX757, ILOAD = 0mA (Note 2) 2.7 5.5 V
Note 1:
Supply current from the 3.3V output is measured with an ammeter between the 3.3V output and OUT pin. This current correlates directly with actual battery supply current, but is reduced in value according to the step-up ratio and efficiency.
Note 2:
Minimum value is production tested. Maximum value is guaranteed by design and is not production tested. 2 Maxim Integrated
3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters ABSOLUTE MAXIMUM RATINGS
Supply Voltage (OUT to GND) ..-0.3V, +7V Operating Temperature Ranges: Switch Voltage (LX to GND) ..-0.3V, +7V MAX75_C_ _ ..0°C to +70°C Auxiliary Pin Voltages (SHDN, LBI, LBO, REF, MAX75_E_ _..-40°C to +85°C 3/5, FB to GND) ..-0.3V, (VOUT + 0.3V) Junction Temperature ..+150°C Reference Current (IREF) ..2.5mA Storage Temperature Range... -65°to +160°C Continuous Power Dissipation (TA = +70°C) Lead Temperature (soldering, 10sec) ... +300°C Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW SO (derate 5.88mW/°C above +70°C) ..471mW Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuits of Figure 1 and Typical Operating Circuit, VIN = 2.5V, ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
MAX756, 3/5 = 0V, 0mA < ILOAD < 200mA 4.8 5.0 5.2 Output Voltage 2V < VIN < 3V MAX756, 3/5 = 3V, 0mA < ILOAD < 300mA 3.17 3.30 3.43 V MAX757, VOUT = 5V, 0mA < ILOAD < 200mA 4.8 5.0 5.2 Minimum Start-Up Supply Voltage ILOAD = 10mA 1.1 1.8 V Minimum Operating Supply ILOAD = 20mA 0.7 V Voltage (once started) Quiescent Supply Current in ILOAD = 0mA, 3/5 = 3V, LBI = 1.25V, VOUT = 3.47V, 60 µA 3.3V Mode (Note 1) FB = 1.3V (MAX757 only) Battery Quiescent Current Output set for 3.3V 60 µA Measured at VIN in Figure 1 Shutdown Quiescent Current SHDN = 0V, LBI = 1.25V, 3/5 = 3V, VOUT = 3.47V, 20 40 µA (Note 1) FB = 1.3V (MAX757 only) Reference Voltage No REF load, CREF = 0.1µF 1.23 1.25 1.27 V Reference-Voltage Regulation 3/5 = 3V, -20µA < REF load < 250µA, CREF = 0.22µF 0.8 2.0 % LBI Input Threshold With falling edge 1.22 1.25 1.28 V LBI Input Hysteresis 25 mV LBO Output Voltage Low ISINK = 2mA 0.4 V LBO Output Leakage Current LBO = 5V 1 µA SHDN, 3/5 Input Voltage Low 0.4 V SHDN, 3/5 Input Voltage High 1.6 V LBI = 1.25V, FB = 1.25V, SHDN = 0V or 3V, SHDN, 3/5, FB, LBI Input Current ±100 nA 3/5 = 0V or 3V FB Voltage MAX757 1.22 1.25 1.28 V Output Voltage Range MAX757, ILOAD = 0mA (Note 2) 2.7 5.5 V
Note 1:
Supply current from the 3.3V output is measured with an ammeter between the 3.3V output and OUT pin. This current correlates directly with actual battery supply current, but is reduced in value according to the step-up ratio and efficiency.
Note 2:
Minimum value is production tested. Maximum value is guaranteed by design and is not production tested. 2 Maxim Integrated
