Datasheet ADP2384 (Analog Devices) - 7

Data Sheet ADP2384 TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VIN = 12 V, VOUT = 3.3 V, L = 3.3 µH, COUT = 47 µF × 2, fSW = 600 kHz, unless otherwise noted.
100 100 95 95 90 90 85 85 %) %) ( 80 ( 80 NCY 75 NCY E 75 E ICI ICI F 70 F 70 F F E E 65 65 VOUT = 1.2V VOUT = 1.2V 60 VOUT = 1.8V 60 VOUT = 1.8V VOUT = 2.5V VOUT = 2.5V 55 VOUT = 3.3V 55 VOUT = 3.3V INDUCTOR: FDVE1040-3R3M VOUT = 5V INDUCTOR: FDVE1040-6R8M VOUT = 5V 50 50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
004
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
007
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
10725- 10725- Figure 4. Efficiency at VIN = 12 V, fSW = 600 kHz Figure 7. Efficiency at VIN = 12 V, fSW = 300 kHz
100 100 95 95 90 90 85 85 %) %) ( 80 ( 80 NCY 75 NCY E 75 E ICI ICI F 70 F 70 F F E E 65 V 65 OUT = 1.0V VOUT = 1.2V V 60 VOUT = 1.8V 60 OUT = 1.5V V V OUT = 2.5V OUT = 1.8V V 55 VOUT = 3.3V 55 OUT = 2.5V INDUCTOR: FDVE1040-3R3M V V OUT = 5V OUT = 3.3V INDUCTOR: FDVE1040-1R5M 50 50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
005
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
008
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
10725- 10725- Figure 5. Efficiency at VIN = 18 V, fSW = 600 kHz Figure 8. Efficiency at VIN = 5 V, fSW = 600 kHz
100 3.2 3.0 90 A) µ ( mA) 2.8 ( NT NT 80 2.6 N CURRE CURRE W 2.4 70 NT DO CE S E 2.2 HUT UI S Q 60 TJ = –40°C 2.0 TJ = –40°C TJ = +25°C TJ = +25°C TJ = +125°C TJ = +125°C 50 1.8 4 6 8 10 12 14 16 18 20
006
4 6 8 10 12 14 16 18 20
009
INPUT VOLTAGE (V) INPUT VOLTAGE (V)
10725- 10725- Figure 6. Shutdown Current vs. VIN Figure 9. Quiescent Current vs. VIN Rev. A | Page 7 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS FUNCTIONAL BLOCK DIAGRAM THEORY OF OPERATION CONTROL SCHEME PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SYNCHRONIZATION SOFT START POWER GOOD PEAK CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION OVERVOLTAGE PROTECTION (OVP) UNDERVOLTAGE LOCKOUT (UVLO) THERMAL SHUTDOWN APPLICATIONS INFORMATION INPUT CAPACITOR SELECTION OUTPUT VOLTAGE SETTING VOLTAGE CONVERSION LIMITATIONS INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING THE INPUT VOLTAGE UVLO COMPENSATION DESIGN ADIsimPower DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING (DESIGN EXAMPLE) FREQUENCY SETTING INDUCTOR SELECTION (DESIGN EXAMPLE) OUTPUT CAPACITOR SELECTION (DESIGN EXAMPLE) COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION (DESIGN EXAMPLE) RECOMMENDED EXTERNAL COMPONENTS CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE