Datasheet LTC3108 (Analog Devices) - 4

LTC3108
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. IVOUT and Efficiency vs VIN, I 1:20 Ratio Transformer IN vs VIN, (VOUT = 0V)
1000 4000 80 1:50 RATIO, C1 = 4.7n C1 = 10nF 1:100 RATIO, C1 = 1n 3500 70 1:20 RATIO, C1 = 10n IVOUT 3000 (VOUT = 0V) 60 EFFICIENCY (%) 100 2500 50 (µA) 2000 EFFICIENCY IVOUT 40 (mA) I IN I VOUT (V (V OUT = 4.5V) OUT = 4.5V) 1500 30 10 1000 20 500 10 1 0 0 10 100 1000 0 100 200 300 400 500 V V IN (mV) IN (mV) 3108 G00 3108 G01
IVOUT and Efficiency vs VIN, IVOUT and Efficiency vs VIN, 1:100 Ratio Transformer 1:50 Ratio Transformer
1400 70 3200 80 C1 = 1nF C1 = 4.7nF IVOUT 2800 I (V 70 1200 VOUT 60 OUT = 0V) (VOUT = 0V) 2400 EFFICIENCY 60 1000 50 EFFICIENCY EFFICIENCY (%) (V EFFICIENCY (%) OUT = 4.5V) (V 2000 50 OUT = 4.5V) 800 40 (µA) (µA) 1600 IVOUT 40 (VOUT = 4.5V) I VOUT 600 30 I VOUT IVOUT 1200 30 (V 400 OUT = 4.5V) 20 800 20 200 10 400 10 0 0 0 0 0 100 200 300 400 500 0 100 200 300 400 500 V V IN (mV) IN (mV) 3108 G03 3108 G02
Input Resistance vs VIN IVOUT vs VIN and Source Resistance, (VOUT Charging) 1:20 Ratio
10 10000 C1 = 10nF 9 8 1:20 RATIO 1000 7 ANCE (Ω) 6 5 (µA) 100 1:50 RATIO 4 I VOUT 3 INPUT RESIST 10 2 1:100 RATIO 1Ω 2Ω 1 5Ω 10Ω 0 0 0 100 200 300 400 500 0 100 200 300 400 500 600 700 800 VIN (mV) VIN OPEN-CIRCUIT (mV) 3108 G05 3108 G04 Rev. D 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts