Datasheet ADP2121 (Analog Devices) - 7

Data Sheet ADP2121 44 40 VOUT = 1.82V 42 T 38 A = +85°C ) A) µ 40 µA ( ( NT NT 36 38 CURRE TA = +25°C CURRE NT 36 NT 34 CE CE S S E E 34 UI UI Q T Q A = –40°C 32 VOUT = 1.8V VOUT = 1.82V 32 VOUT = 1.85V VOUT = 1.875V VOUT = 2.3V 30 30 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
010
2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
051
INPUT VOLTAGE (V)
07407-
INPUT VOLTAGE (V)
07407- Figure 10. Auto Mode Quiescent Current vs. Input Voltage Over Temperature Figure 13. Auto Mode Quiescent Current vs. Input Voltage for All Voltage (Nonswitching, No Load) Options (Nonswitching, No Load)
0.8 0.7 VOUT = 1.82V 0.7 0.6 0.6 A) A) µ µ ( 0.5 ( NT T 0.5 A = +85°C NT 0.4 0.4 N CURRE TA = +25°C N CURRE W 0.3 W 0.3 DO DO 0.2 HUT 0.2 TA = –40°C HUT S S VOUT = 1.8V VOUT = 1.82V V 0.1 0.1 OUT = 1.85V VOUT = 1.875V VOUT = 2.3V 0 0 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
011
2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
052
INPUT VOLTAGE (V)
07407-
INPUT VOLTAGE (V)
07407- Figure 11. Shutdown Current vs. Input Voltage Over Temperature Figure 14. Shutdown Current vs. Input Voltage for All Voltage Options
16 15 VOUT = 1.82V TA = +85°C 14 13 mA) mA) ( ( 12 TA = +25°C 11 NT NT 10 9 CURRE TA = –40°C CURRE NT NT CE CE S 8 S 7 E E UI UI V Q Q OUT = 1.8V VOUT = 1.82V 6 5 VOUT = 1.85V VOUT = 1.875V VOUT = 1.82V VOUT = 2.3V 4 3 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
013
2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
053
INPUT VOLTAGE (V)
07407-
INPUT VOLTAGE (V)
07407- Figure 12. PWM Mode Quiescent Current vs. Input Voltage Over Temperature Figure 15. PWM Mode Quiescent Current vs. Input Voltage (Switching, No Load) for All Voltage Options (Switching, No Load) Rev. C | Page 7 of 20 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OVERVIEW MODE SELECTION Pulse-Width Modulation (PWM) Mode Auto Mode (PFM and PWM Switching) Pulse Frequency Modulation (PFM) Mode Transition ENABLE/SHUTDOWN INTERNAL CONTROL FEATURES Overcurrent Protection Soft Start Synchronous Rectification Compensation Undervoltage Lockout (UVLO) Output Short-Circuit Protection Thermal Shutdown (TSD) Protection APPLICATIONS INFORMATION INDUCTOR SELECTION INPUT CAPACITOR SELECTION OUTPUT CAPACITOR SELECTION PCB LAYOUT GUIDELINES OUTLINE DIMENSIONS ORDERING GUIDE