Datasheet LTC3409 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 600mA Low VIN Buck Regulator in 3mm × 3mm DFN |
| Pages / Page | 16 / 4 |
| File Format / Size | PDF / 295 Kb |
| Document Language | English |
Model Line for this Datasheet
Text Version of Document
LTC3409
TYPICAL PERFORMANCE CHARACTERISTICS (From Typical Application on the front page except for the resistive divider resistor values) Effi ciency/Power Lost Effi ciency vs Input Voltage Effi ciency vs Input Voltage vs Load Current, VOUT = 1.8V VOUT = 1.2V, Burst Mode Operation VOUT = 1.2V, Pulse Skip
100 1.0 100 100 90 1 90 90 IOUT = 600mA 80 2 80 80 0.1 POWER LOSS (mW) I 70 OUT = 800mA 3 4 5 6 70 70 IOUT = 100mA 60 60 60 50 8 0.01 50 50 IOUT = 10mA 10 40 40 40 EFFICIENCY (%) 7 EFFICIENCY (%) EFFICIENCY (%) 30 12 30 30 IOUT = 1mA 11 0.001 20 9 20 I 20 OUT = 0.1mA IOUT = 100mA IOUT = 0.1mA 10 10 IOUT = 1mA IOUT = 600mA 10 IOUT = 10mA IOUT = 800mA 0 0.0001 0 0 0.1 1 10 100 1000 1.5 2.5 3.5 4.5 5.5 1.5 2.5 3.5 4.5 5.5 LOAD CURRENT (mA) 3409 G01 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3409 G02 3409 G03 1: 2.5VIN, BURST 7: POWER LOST, 2.5VIN, BURST 2: 3.6VIN, BURST 8: POWER LOST, 2.5VIN, PULSE SKIP 3: 4.2VIN, BURST 9: POWER LOST, 3.6VIN, BURST 4: 2.5VIN, PULSE SKIP 10: POWER LOST, 3.6VIN, PULSE SKIP 5: 3.6VIN, PULSE SKIP 11: POWER LOST, 4.2VIN, BURST 6: 4.2VIN, PULSE SKIP 12: POWER LOST, 4.2VIN, PULSE SKIP
Effi ciency vs Load Current Effi ciency vs Load Current Reference Voltage VOUT = 2.5V VOUT = 1.2V vs Temperature
100 100 0.618 BURST BURST 1.6V 90 90 IN 0.617 2.7VIN 2.5VIN 80 80 0.616 4.2VIN 70 70 0.615 3.6VIN 3.1VIN 60 60 3.1VIN TAGE (V) 0.614 3.6VIN 2.5VIN 50 50 0.613 2.7VIN 4.2VIN 40 40 0.612 EFFICIENCY (%) PULSE SKIP EFFICIENCY (%) 1.6VIN 30 30 0.611 PULSE SKIP REFERENCE VOL 20 20 0.610 10 10 0.609 0 0 0.608 0.1 1 10 100 1000 0.1 1 10 100 1000 –50 –30 –10 10 30 50 70 90 110 130 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3409 G04 3409 G05 3409 G06 3409fc 4
TYPICAL PERFORMANCE CHARACTERISTICS (From Typical Application on the front page except for the resistive divider resistor values) Effi ciency/Power Lost Effi ciency vs Input Voltage Effi ciency vs Input Voltage vs Load Current, VOUT = 1.8V VOUT = 1.2V, Burst Mode Operation VOUT = 1.2V, Pulse Skip
100 1.0 100 100 90 1 90 90 IOUT = 600mA 80 2 80 80 0.1 POWER LOSS (mW) I 70 OUT = 800mA 3 4 5 6 70 70 IOUT = 100mA 60 60 60 50 8 0.01 50 50 IOUT = 10mA 10 40 40 40 EFFICIENCY (%) 7 EFFICIENCY (%) EFFICIENCY (%) 30 12 30 30 IOUT = 1mA 11 0.001 20 9 20 I 20 OUT = 0.1mA IOUT = 100mA IOUT = 0.1mA 10 10 IOUT = 1mA IOUT = 600mA 10 IOUT = 10mA IOUT = 800mA 0 0.0001 0 0 0.1 1 10 100 1000 1.5 2.5 3.5 4.5 5.5 1.5 2.5 3.5 4.5 5.5 LOAD CURRENT (mA) 3409 G01 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3409 G02 3409 G03 1: 2.5VIN, BURST 7: POWER LOST, 2.5VIN, BURST 2: 3.6VIN, BURST 8: POWER LOST, 2.5VIN, PULSE SKIP 3: 4.2VIN, BURST 9: POWER LOST, 3.6VIN, BURST 4: 2.5VIN, PULSE SKIP 10: POWER LOST, 3.6VIN, PULSE SKIP 5: 3.6VIN, PULSE SKIP 11: POWER LOST, 4.2VIN, BURST 6: 4.2VIN, PULSE SKIP 12: POWER LOST, 4.2VIN, PULSE SKIP
Effi ciency vs Load Current Effi ciency vs Load Current Reference Voltage VOUT = 2.5V VOUT = 1.2V vs Temperature
100 100 0.618 BURST BURST 1.6V 90 90 IN 0.617 2.7VIN 2.5VIN 80 80 0.616 4.2VIN 70 70 0.615 3.6VIN 3.1VIN 60 60 3.1VIN TAGE (V) 0.614 3.6VIN 2.5VIN 50 50 0.613 2.7VIN 4.2VIN 40 40 0.612 EFFICIENCY (%) PULSE SKIP EFFICIENCY (%) 1.6VIN 30 30 0.611 PULSE SKIP REFERENCE VOL 20 20 0.610 10 10 0.609 0 0 0.608 0.1 1 10 100 1000 0.1 1 10 100 1000 –50 –30 –10 10 30 50 70 90 110 130 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3409 G04 3409 G05 3409 G06 3409fc 4
