Datasheet MAX1595 (Maxim) - 3

Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump MAX1595 __________________________________________Typical Operating Characteristics
(Circuit of Figure 4, VIN = 2V for MAX1595_ _ _33, VIN = 3V for MAX1595_ _ _50, TA = +25°C, unless otherwise noted.)
NO LOAD SUPPLY CURRENT OUTPUT VOLTAGE vs. SUPPLY VOLTAGE OUTPUT WAVEFORM vs. LOAD CURRENT
MAX1595 toc02 10000 5.06 5.04 1000 MAX1595 toc01 MAX1595 toc03 VIN = 3.6V 5.02 µA) 5.00 VIN = 3.3V 100 4.98 50mV/div 10 4.96 VIN = 3V SUPPLY CURRENT ( OUTPUT VOLTAGE (V) 4.94 1 4.92 VOUT = 5V VOUT = 5V VOUT = 5V 0.1 4.90 0 1 2 3 4 5 6 200ns/div 1 10 100 1000 SUPPLY VOLTAGE (V) OUTPUT WAVEFORM. AC-COUPLED. LOAD CURRENT (mA) VIN = 3.6V, ILOAD = 100mA, COUT = 1µF
3V EFFICIENCY 5V EFFICIENCY vs. LOAD CURRENT vs. LOAD CURRENT SHUTDOWN TIMING
MAX1595 toc06 100 100 VIN = 1.8V 90 90 VIN = 3V MAX1595 toc04 80 MAX1595 toc05 80 5V A 70 70 60 V 60 VIN = 3.3V IN = 2.4V V 50 50 IN = 3.6V 40 40 EFFICIENCY (%) EFFICEINCY (%) B 30 30 20 20 10 10 0 0 1 10 100 0.1 1 10 100 1000 100µs/div LOAD CURRENT (mA) LOAD CURRENT (mA) A: OUTPUT VOLTAGE: RL = 100Ω, 2V/div B: SHDN VOLTAGE: 2V/div
OUTPUT VOLTAGE LINE-TRANSIENT RESPONSE LOAD-TRANSIENT RESPONSE vs. SUPPLY VOLTAGE
MAX1595 toc07 MAX1595 toc08 6 V A OUT = 5V, ILOAD = 125mA 5 MAX1595 toc09 A 4 VOUT = 3.3V, ILOAD = 75mA 3 B B 2 OUTPUT VOLTAGE (V) 1 COUT = 1µF 0 2ms/div 200µs/div 0 1 2 3 4 5 6 A: INPUT VOLTAGE: VIN = 3.1V TO 3.6V, 500mV/div A: LOAD CURRENT: ILOAD = 5mA to 95mA, 100mA/div SUPPLY VOLTAGE (V) B: OUTPUT VOLTAGE: ILOAD = 50mA, 100mV/div B: OUTPUT VOLTAGE: AC-COUPLED 100mV/div
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