Datasheet ADP2390 (Analog Devices) - 8

ADP2389/ADP2390 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VPVIN = VVIN = 12 V, VOUT = 1.8 V, L = 1 µH, COUT = 5 × 100 µF, fSW = 500 kHz, unless otherwise noted.
100 100 95 95 90 90 85 (%) 85 (%) 80 ENCY 80 ENCY INDUCTOR: INDUCTOR: 75 744 333 0100 744 333 0220 EFFICI 75 V EFFICI OUT = 1.0V VOUT = 1.0V V V 70 OUT = 1.2V OUT = 1.2V V 70 OUT = 1.5V VOUT = 1.5V VOUT = 1.8V VOUT = 1.8V 65 VOUT = 2.5V 65 VOUT = 2.5V VOUT = 3.3V VOUT = 3.3V V V 60 OUT = 5.0V 60 OUT = 5.0V 0 1 2 3 4 5 6 7 8 9 10 11 12
005
0 1 2 3 4 5 6 7 8 9 10 11 12
008
OUTPUT CURRENT (A)
12192-
OUTPUT CURRENT (A)
12192- Figure 5. ADP2389 Efficiency at VPVIN = 12 V, fSW = 600 kHz Figure 8. ADP2389 Efficiency at VPVIN = 12 V, fSW = 300 kHz
100 100 95 95 90 90 85 (%) 85 (%) 80 ENCY 80 ENCY INDUCTOR: 75 744 333 0220 EFFICI INDUCTOR: 75 744 333 0100 EFFICI VOUT = 1.0V V V 70 OUT = 1.2V OUT = 1.2V V 70 OUT = 1.5V VOUT = 1.5V VOUT = 1.8V VOUT = 1.8V 65 VOUT = 2.5V 65 VOUT = 2.5V VOUT = 3.3V VOUT = 3.3V V V 60 OUT = 5.0V 60 OUT = 5.0V 0.1 1 10
006
0.1 1 10
009
OUTPUT CURRENT (A)
12192-
OUTPUT CURRENT (A)
12192- Figure 6. ADP2390 Efficiency at VPVIN = 12 V, fSW = 600 kHz Figure 9. ADP2390 Efficiency at VPVIN = 12 V, fSW = 300 kHz
16 1.25 14 1.20 12 (µA) (mA) NT 10 NT 1.15 8 N CURRE CURRE W NT 6 1.10 DO ESCE 4 SHUT UI Q 1.05 2 TJ = –40°C TJ = –40°C TJ = +25°C TJ = +25°C T T 0 J = +125°C 1.00 J = +125°C 4 6 8 10 12 14 16 18
007
4 6 8 10 12 14 16 18
010
INPUT VOLTAGE (V)
12192-
INPUT VOLTAGE (V)
12192- Figure 7. Shutdown Current (ISHDN) vs. Input Voltage Figure 10. Quiescent Current (IQ) vs. Input Voltage Rev. 0 | Page 8 of 23 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL INFORMATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PFM MODE (ADP2390 ONLY) PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SOFT START FAST TRANSIENT RESPONSE 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 INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING INPUT VOLTAGE UVLO COMPENSATION DESIGN DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION SCHEMATIC FOR DESIGN EXAMPLE EXTERNAL COMPONENTS RECOMMENDATION CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE