Datasheet LTC1701, LTC1701B (Analog Devices) - 3

ManufacturerAnalog Devices
Description1MHz Step-Down DC/DC Converter in SOT-23
Pages / Page12 / 3 — TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency vs Load Current. …
File Format / SizePDF / 188 Kb
Document LanguageEnglish

TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency vs Load Current. Efficiency vs Input Voltage. DC Supply Current

TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Input Voltage DC Supply Current

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LTC1701/LTC1701B
W U TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Input Voltage DC Supply Current
100 100 300 VOUT = 2.5V VOUT = 2.5V V 95 95 IN = 3.3V ILOAD =100mA 250 90 µA) 90 200 ACTIVE V 85 IN = 5.0V ILOAD =10mA 85 80 150 SLEEP EFFICIENCY (%) 75 80 EFFICIENCY (%) 100 70 SUPPLY CURRENT ( 75 50 LTC1701 65 LTC1701 LTC1701B LTC1701B 70 60 0 1 10 100 1000 2 3 4 5 6 2 3 4 5 6 LOAD CURRENT (mA) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 1701 • G01 1701 • G02 1701 • G03
Switch Resistance vs Supply Voltage Load Regulation Line Regulation
370 0.60 0.30 0.40 350 0.25 0.20 VOUT = 5.0V ) ILOAD = 200mA Ω 0.00 330 0.20 –0.20 310 –0.40 0.15 ERROR (%) ERROR (%) –0.60 VOUT = 3.3V OUT OUT 290 V V 0.10 ON RESISTANCE (m –0.80 ILOAD = 400mA –1.00 270 0.05 –1.20 250 –1.40 0 2 3 4 5 6 0 200 400 600 2 3 4 5 6 SUPPLY VOLTAGE (V) LOAD CURRENT (mA) VIN (V) 1701 • G04 1701 • G05 1701 • G06
Dropout Characteristics Start-Up Transient Response
3.4 3.3 ILOAD = 100mA VOUT VOUT 1V/DIV 3.2 50mV/DIV AC COUPLED 3.1 I (V) LOAD = 200mA 3.0 I OUT TH V 2V/DIV IL 2.9 200mA/DIV ILOAD = 500mA IL 2.8 500mA/DIV 2.7 VOUT = 3.3V FIGURE 1 2.6 3.0 3.2 3.4 3.6 3.8 V V IN = 3.3V, VOUT = 2.5V IN = 3.3V, VOUT = 2.5V V CIRCUIT OF FIGURE 1 CIRCUIT OF FIGURE 1 IN (V) R I LOAD = 6Ω LOAD = 100mA TO 500mA STEP 701 • G07 1701 G08 1701 G09 3