Datasheet LTC3429, LTC3429B (Analog Devices) - 3

LTC3429/LTC3429B
W U TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25
°
C unless otherwise specified) Single-Cell to 3.3V Efficiency 2-Cell to 3.3V Efficiency (LTC3429 Only) (LTC3429 Only) Efficiency vs Input Voltage
100 100 100 100 100 V V IN = 3V OUT = 3.3V IOUT = 50mA 90 10 90 EFFICIENCY 10 90 VIN = 1.5V POWER LOSS (W) VIN = 2.4V POWER LOSS (W) 80 EFFICIENCY 1 80 1 80 VIN = 1.2V 70 0.1 70 V 0.1 70 V IN = 2.4V IN = 1.2V EFFICIENCY (%) EFFICIENCY (%) 60 0.01 EFFICIENCY (%) 60 VIN = 3V 0.01 60 VIN = 1.5V POWER LOSS VIN > VOUT 50 POWER LOSS 0.001 50 0.001 50 PMOS LDO MODE 40 0.0001 40 0.0001 40 0.1 1 10 100 1000 0.1 1 10 100 1000 0.5 1.5 2.5 3.5 4.5 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 3429 G01 3429 G02 3429 G05
Burst Mode Output Current 2-Cell to 5V Efficiency Li-Ion to 5V Efficiency Threshold vs Input Voltage (LTC3429 Only) (LTC3429 Only) (LTC3429 Only)
100 100 100 100 35 L = 4.7µH VIN = 4.2V 30 90 VIN = 3V 10 90 10 EFFICIENCY V EFFICIENCY POWER LOSS (W) IN = 3.6V POWER LOSS (W) 25 80 VIN = 2.4V 1 80 1 20 V 70 IN = 2.4V 0.1 70 0.1 VOUT = 3.3V VIN = 3.6V 15 VIN = 3V EFFICIENCY (%) V 60 0.01 EFFICIENCY (%) 60 VIN = 4.2V 0.01 OUT = 5V POWER LOSS 10 OUTPUT CURRENT (mA) POWER LOSS 50 0.001 50 0.001 5 40 0.0001 40 0.0001 0 0.1 1 10 100 1000 0.1 1 10 100 1000 0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 3429 G03 3429 G04 3429 G06
Maximum Load Current No Load Input Current Capability at Output 4% Below Minimum Start-Up Input Voltage vs Input Voltage (LTC3429 Only) Regulation Point vs Load Current
1000 600 1.9 L = 4.7µH L = 4.7µH 500 1.7 CURRENT SINK LOAD A) µ 400 1.5 VOUT = 5V VOUT = 3.3V RESISTOR 100 300 1.3 LOAD VOUT = 5V 200 1.1 INPUT VOLTAGE (V) INPUT CURRENT ( VOUT = 3.3V OUTPUT CURRENT (mA) 100 0.9 10 0 0.7 0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 50 100 150 INPUT VOLTAGE (V) INPUT VOLTAGE (V) OUTPUT CURRENT (mA) 3429 G07 3429 G08 3429 G09 3429fa 3