Datasheet LTC3547 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual Monolithic 300mA Synchronous Step-Down Regulator |
| Pages / Page | 16 / 5 — TYPICAL PERFOR A CE CHARACTERISTICS. Load Regulation. Line Regulation. … |
| File Format / Size | PDF / 310 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Load Regulation. Line Regulation. Start-Up From Shutdown. Load Step
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Text Version of Document
LTC3547
W U TYPICAL PERFOR A CE CHARACTERISTICS Load Regulation Line Regulation
1.2 0.6 VOUT = 1.2V VIN = 3.6V VOUT = 1.8V V I 1.O OUT = 1.8V LOAD = 100mA VOUT = 2.5V 0.4 0.8 0.2 0.6 Burst Mode 0 ERROR (%) 0.4 ERROR (%) OPERATION OUT OUT V V –0.2 0.2 –0.4 0 –0.2 –0.6 0 50 100 150 200 250 300 350 2.5 3 3.5 4 4.5 5 5.5 LOAD CURRENT (mA) VIN (V) 3547 G13 3547 G14
Start-Up From Shutdown Start-Up From Shutdown Load Step
RUN RUN VOUT, AC 2V/DIV 2V/DIV COUPLED 100mV/DIV VOUT VOUT 1V/DIV 1V/DIV IL 200mA/DIV I I L IL LOAD 100mA/DIV 200mA/DIV 200mA/DIV 3547 G15 3547 G16 3547 G17 250µs/DIV 200µs/DIV 10µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 0A ILOAD = 300mA ILOAD = 0mA TO 300mA
Load Step Load Step
V V OUT, AC OUT, AC COUPLED COUPLED 100mV/DIV 100mV/DIV I I L L 200mA/DIV 200mA/DIV I I LOAD LOAD 200mA/DIV 200mA/DIV 3547 G18 3547 G19 10µs/DIV 10µs/DIV V V IN = 3.6V IN = 3.6V V V OUT = 1.8V OUT = 1.8V I I LOAD = 20mA TO 300mA LOAD = 50mA TO 300mA 3547fa 5
W U TYPICAL PERFOR A CE CHARACTERISTICS Load Regulation Line Regulation
1.2 0.6 VOUT = 1.2V VIN = 3.6V VOUT = 1.8V V I 1.O OUT = 1.8V LOAD = 100mA VOUT = 2.5V 0.4 0.8 0.2 0.6 Burst Mode 0 ERROR (%) 0.4 ERROR (%) OPERATION OUT OUT V V –0.2 0.2 –0.4 0 –0.2 –0.6 0 50 100 150 200 250 300 350 2.5 3 3.5 4 4.5 5 5.5 LOAD CURRENT (mA) VIN (V) 3547 G13 3547 G14
Start-Up From Shutdown Start-Up From Shutdown Load Step
RUN RUN VOUT, AC 2V/DIV 2V/DIV COUPLED 100mV/DIV VOUT VOUT 1V/DIV 1V/DIV IL 200mA/DIV I I L IL LOAD 100mA/DIV 200mA/DIV 200mA/DIV 3547 G15 3547 G16 3547 G17 250µs/DIV 200µs/DIV 10µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 0A ILOAD = 300mA ILOAD = 0mA TO 300mA
Load Step Load Step
V V OUT, AC OUT, AC COUPLED COUPLED 100mV/DIV 100mV/DIV I I L L 200mA/DIV 200mA/DIV I I LOAD LOAD 200mA/DIV 200mA/DIV 3547 G18 3547 G19 10µs/DIV 10µs/DIV V V IN = 3.6V IN = 3.6V V V OUT = 1.8V OUT = 1.8V I I LOAD = 20mA TO 300mA LOAD = 50mA TO 300mA 3547fa 5
