Datasheet LTC3308A (Analog Devices) - 7

LTC3308A
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.3V, TA = 25°C, unless otherwise noted. VOUT Load Regulation in V OUT Load Regulation in OUT Line Regulation in OUT Line Regulation in UV, OV PGOOD Thresholds UV VOUT = 1.2V Application V OUT = 1.2V Application OUT = 1.2V Application OUT = 1.2V Application
112 1.212 1.212 (%) 1.210 1.210 110 OUT 1.208 1.208 108 1.206 1.206 TED V 1.204 1.204 106 1.202 1.202 (V) (V) 104 UV, VOUT RISING 1.200 1.200 UV, VOUT FALLING V OUT V OUT 1.198 1.198 102 OV, VOUT RISING OV, V 1.196 1.196 OUT FALLING AGE OF THE REGULA 100 1.194 1.194 V 1.192 IN = 2.5V 1.192 I 98 LOAD = 0A VIN = 3.3V 1.190 1.190 ILOAD = 4A PERCENT VIN = 5V 96 1.188 1.188 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 1 1.5 2 2.5 3 3.5 4 TEMPERATURE (°C) INPUT VOLTAGE (V) ILOAD (A) 3308A G21 3308A G19 3308A G20
Efficiency, V Efficiency IN = 2.5V Efficiency, V Efficiency IN = 2.5V IN = 3.3V IN = 3.3V Efficiency, V Efficiency IN = 5.0V IN = 5.0V Burst Mode Operation Burst Mode Operation Burst Mode Operation
100 100 100 f f f SW = 2MHz, Murata DFE201612E–R33M SW = 2MHz, Murata DFE201612E–R33M SW = 2MHz, Murata DFE201612E–R33M 95 95 95 90 90 90 85 85 85 80 80 80 75 75 75 70 70 70 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) V V 65 VOUT = 0.5V 65 OUT = 0.5V 65 OUT = 1.0V V V V OUT = 0.75V OUT = 1.2V OUT = 0.75V 60 60 V 60 V V OUT = 1.0V OUT = 1.8V OUT = 1.0V V V V OUT = 1.2V OUT = 2.5V OUT = 1.2V 55 55 55 V V V OUT = 1.8V OUT = 3.3V OUT = 1.8V 50 50 50 0.001 0.01 0.1 1 4 0.001 0.01 0.1 1 4 0.001 0.01 0.1 1 4 I I LOAD (A) LOAD (A) ILOAD (A) 3308A G22 3308A G23 3308A G24
Efficiency vs fSW Efficiency vs f , SW, Efficiency vs VIN Efficiency vs V , V IN OUT , V  = 1.2V, OUT = 1.2V, 3.3VIN to 1.2VOUT to 1.2V , I OUT LOAD , I  = 2A LOAD = 2A Burst Mode Operation Burst Mode Operation Efficiency, 3.3V Efficiency IN , 3.3V  to 1.2V IN OUT TO 1.2VOUT
93 95 100 Murata DFE201612E SERIES f f SW = 2MHz, Murata DFE201612E–R33M SW = 2MHz, Murata DFE201612E–R33M 93 90 92 91 80 70 89 91 60 87 50 85 90 40 83 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 81 89 20 BURST L = 240nH 79 FC L = 330nH ILOAD = 0.02A (BURSTING) 10 77 PULSE SKIP L = 470nH ILOAD = 4A (CONTINUOUS) 88 0 75 1 1.4 1.8 2.2 2.6 3.0 0.001 0.01 0.1 1 4 2 2.5 3 3.5 4 4.5 5 5.5 SWITCHING FREQUENCY (MHz) I V LOAD (A) IN (V) 3308A G27 3308A G25 3308A G26 Rev. 0 For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts