Datasheet ADP5003 (Analog Devices) - 10

ADP5003 Data Sheet 0.5 0.5 0.4 0.4 %) %) ( ( 1 0.3 1 0.3 UT UT O O V V 0.2 0.2 V E V E G A 0.1 0.1 RAG E VER 0 A 0 AV M OM –0.1 –0.1 RO FR –0.2 N F –0.2 TION IO A –0.3 IAT –0.3 EVI V D –0.4 DE –0.4 –0.5 –0.5 0 0.5 1.0 1.5 2.0 2.5 3.0
312
4.2 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0
418
LOAD CURRENT (A)
15021-
INPUT VOLTAGE (V)
15021- Figure 15. Buck Load Regulation, VPVIN1 = 12 V, VVOUT1 = 3.3 V, fSW = 600 kHz Figure 18. Buck Line Regulation, VVOUT1 = 3.3 V, IVOUT1 = 1 A, fSW = 600 kHz
0.5 0.5 %) 0.4 0.4 %) ( ( 2 2 T T U 0.3 0.3 U PVO PVO 0.2 0.2 E V E V G G A 0.1 0.1 A VER 0 VER 0 A A OM –0.1 OM –0.1 FR FR –0.2 –0.2 TION TION A –0.3 A –0.3 EVI EVI D –0.4 D –0.4 –0.5 –0.5 0 0.5 1.0 1.5 2.0 2.5 3.0
314
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
315
LOAD CURRENT (A) HEADROOM (V)
15021- 15021- Figure 16. LDO Load Regulation, VPVOUT2 = 3.3 V, VHR = 0.3 V Figure 19. LDO Line Regulation, VPVOUT2 = 3.3 V, IPVOUT2 = 1 A
1.0 3 0.8 %) ( 2 UT 0.6 O F E %) RE ( 0.4 Y RAG E V 1 E NC G 0.2 V A A UE Q OM VER 0 RE 0 A FR F OM –0.2 NG TION FR –1 A CHI –0.4 IT EVI TION D W A –0.6 S –2 EVI D –0.8 –1.0 –3 –50 –20 10 40 70 100 130
300
–50 –20 10 40 70 100 130
301
TEMPERATURE (°C)
15021-
TEMPERATURE (°C)
15021- Figure 17. REFOUT Voltage (VREFOUT) vs. Temperature Figure 20. Switching Frequency vs. Temperature Rev. 0 | Page 10 of 29 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS BUCK REGULATOR SPECIFICATIONS LDO SPECIFICATIONS ADAPTIVE HEADROOM CONTROLLER SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Adaptive Headroom Control Precision Enable/Shutdown Undervoltage Lockout (UVLO) Thermal Shutdown (TSD) Active Pull Down Soft Start (SS) Power-Good BUCK REGULATOR Control Scheme Oscillator Frequency Control External Oscillator Synchronization Buck Startup Current-Limit and Short-Circuit Protection LDO REGULATOR LDO Startup Current Limit Differential Remote Sensing POWER-GOOD OUTPUT VOLTAGE OF THE BUCK REGULATOR OUTPUT VOLTAGE OF THE LDO REGULATOR VOLTAGE CONVERSION LIMITATIONS COMPONENT SELECTION Output Capacitors Input Capacitor Inductor COMPENSATION COMPONENTS DESIGN JUNCTION TEMPERATURE BUCK REGULATOR DESIGN EXAMPLE SETTING THE SWITCHING FREQUENCY FOR THE BUCK REGULATOR SETTING THE OUTPUT VOLTAGE FOR THE BUCK REGULATOR SELECTING THE INDUCTOR FOR THE BUCK REGULATOR SELECTING THE OUTPUT CAPACITOR FOR THE BUCK REGULATOR DESIGNING THE COMPENSATION NETWORK FOR THE BUCK REGULATOR SELECTING THE INPUT CAPACITOR FOR THE BUCK REGULATOR ADAPTIVE HEADROOM CONTROL DESIGN EXAMPLE SETTING THE SWITCHING FREQUENCY FOR THE BUCK REGULATOR USING ADAPTIVE HEADROOM CONTROL SETTING THE OUTPUT VOLTAGE FOR THE BUCK REGULATOR USING ADAPTIVE HEADROOM CONTROL SELECTING THE INDUCTOR FOR THE BUCK REGULATOR USING ADAPTIVE HEADROOM CONTROL SELECTING THE OUTPUT CAPACITORS FOR THE BUCK REGULATOR USING ADAPTIVE HEADROOM CONTROL SELECTING THE INPUT CAPACITOR FOR THE BUCK REGULATOR USING ADAPTIVE HEADROOM CONTROL RECOMMENDED BUCK EXTERNAL COMPONENTS FOR THE BUCK REGULATOR BUCK CONFIGURATIONS INDEPENDENT ADAPTIVE HEADROOM LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE