MAX1720 Switched Capacitor Voltage Inverter with Shutdown The MAX1720 is a CMOS charge pump voltage inverter that is designed for operation over an input voltage range of 1.15 V to 5.5 V with an output current capability in excess of 50 mA. The operating current consumption is only 67 A, and a power saving shutdown MAX1720 MAXIMUM RATINGS* Rating Symbol Value Unit Input Voltage Range (V to GND) V 0.3 to 6.0 V in in Output Voltage Range (V to GND) V 6.0 to 0.3 V out out Output Current (Note 1) I 100 mA out Output Short Circuit Duration (V to GND, Note 1) t Indefinite sec out SC Operating Junction Temperature T 150 C J Power Dissipation and Thermal Characteristics Thermal Resistance, JunctiontoAir R 256 C/W JA Maximum Power Dissipation T = 70C P 313 mW A D Storage Temperature T 55 to 150 C stg Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. *ESD Ratings ESD Machine Model Protection up to 200 V, Class B ESD Human Body Model Protection up to 2000 V, Class 2 ELECTRICAL CHARACTERISTICS (V = 5.0 V, C = 10 F, C = 10 F, T = 40C to 85C, typical values shown are for T = 25C in 1 2 A A unless otherwise noted. See Figure 14 for Test Setup.) Characteristic Symbol Min Typ Max Unit Operating Supply Voltage Range (SHDN = V , R = 10 k) V 1.5 to 5.5 1.15 to 6.0 V in L in Supply Current Device Operating (SHDN = 5.0 V, R = ) I A L in T = 25C 67 90 A T = 85C 72 100 A Supply Current Device Shutdown (SHDN = 0 V) I A SHDN T = 25C 0.4 A T = 85C 1.6 A Oscillator Frequency f kHz OSC T = 25C 8.4 12 15.6 A T = 40C to 85C 6.0 21 A Output Resistance (I = 25 mA, Note 2) R 26 50 out out Voltage Conversion Efficiency (R = ) V 99 99.9 % L EFF Power Conversion Efficiency (R = 1.0 k) P 96 % L EFF Shutdown Input Threshold Voltage (V = 1.5 V to 5.5 V) V V in th(SHDN) High State, Device Operating 0.6 V in Low State, Device Shutdown 0.5 V in Shutdown Input Bias Current pA High State, Device Operating, SHDN = 5.0 V I IH T = 2 5.0 A T = 85C5C 100 A Low State, Device Shutdown, SHDN = 0 V I IL T = 25C 5.0 A T = 85C 100 A WakeUp Time from Shutdown (R = 1.0 k) t 1.2 ms L WKUP 1. Maximum Package power dissipation limits must be observed to ensure that the maximum junction temperature is not exceeded. T T (P R ) J A D JA 2. Capacitors C and C contribution is approximately 20% of the total output resistance. 1 2