Datasheet MAX1795, MAX1796, MAX1797 (Maxim) - 5

MAX1795/MAX1796/ Low-Supply Current, Step-Up DC-DC Converters MAX1797 with True Shutdown
Typical Operating Characteristics
(L = 22μH, CIN = 47μF, COUT = 47μF, TA = +25°C, unless otherwise noted.)
MAX1795 MAX1795 MAX1796 EFFICIENCY vs. LOAD CURRENT (+5V) EFFICIENCY vs. LOAD CURRENT (+3.3V) EFFICIENCY vs. LOAD CURRENT (+5V)
100 V 100 100 BATT = +3.6V VBATT = +2.4V VBATT = +3.6V 90 90 90 80 80 80 V MAX1795/96/97 toc01 70 BATT = +2.4V V MAX1795/96/97 toc02 V MAX1795/96/97 toc03 BATT = +1.2V BATT = +2.4V VBATT = +1.2V 70 V 70 BATT = +1.2V 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 10 10 10 L = 10µH 0 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA)
MAX1796 MAX1797 MAX1797 EFFICIENCY vs. LOAD CURRENT (+3.3V) EFFICIENCY vs. LOAD CURRENT (+5V) EFFICIENCY vs. LOAD CURRENT (+3.3V)
100 V 100 100 BATT = +2.4V V VBATT = +2.4V 90 90 BATT = +3.6V 90 80 80 80 MAX1795/96/97 toc04 70 VBATT = +1.2V MAX1795/96/97 toc05 70 MAX1795/96/97 toc06 70 V 60 60 BATT = +2.4V 60 50 50 VBATT = +1.2V 50 VBATT = +1.2V 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 10 10 10 0 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA)
NO-LOAD BATTERY CURRENT STARTUP VOLTAGE SHUTDOWN THRESHOLD vs. INPUT BATT VOLTAGE vs. LOAD CURRENT vs. INPUT BATT VOLTAGE
300 4.0 3.0 3.5 250 2.5 3.0 MAX1795/96/97 toc07 MAX1795/96/97 toc08 MAX1795/96/97 toc09 200 2.0 2.5 VOUT = +3.3V 150 2.0 1.5 V 1.5 100 OUT = +5V EFFICIENCY (%) 1.0 BATTERY CURRENT (µA) 1.0 SHUTDOWN THRESHOLD (V) 50 0.5 V 0.5 OUT = +3.3V 0 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.1 1 10 100 1000 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 BATT VOLTAGE (V) LOAD CURRENT (mA) BATT VOLTAGE (V) www.maximintegrated.com Maxim Integrated │ 5