Datasheet ADP5300 (Analog Devices) - 10

ADP5300 Data Sheet 801 810 808 ACTIVE TO STANDBY ) ) 806 800 mV mV ( ( E E 804 STANDBY TO ACTIVE AG AG T T 802 L L O O 799 800 798 DBACK V DBACK V E E E E F 798 F 796 794 797 792
019
–40 25 85 125
016
–40 25 85 125 TEMPERATURE (°C) TEMPERATURE (°C)
13366- 13366- Figure 16. Feedback Voltage vs. Temperature, PWM Mode Figure 19. Feedback Voltage vs. Temperature, Hysteresis Mode
700 400 –40ºC –40ºC 600 +25ºC 350 +25ºC ) +125ºC ) +125ºC (mΩ 500 (mΩ 300 H L N) N) O O ( ( DS 400 DS 250 R E R IDE D S -SI H- 300 200 W G O HI L 200 150 100 100 2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
017
2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
020
VIN (V) V
13366-
IN (V)
13366- Figure 17. High-Side RDS (ON) H vs. VIN Figure 20. Low-Side RDS (ON) L vs. VIN
1090 1200 1150 –40ºC +25ºC 1040 +125ºC 1100 mA) mA) ( ( IT IT IM 990 1050 IM L L NT NT 1000 940 950 AK CURRE AK CURRE E E P P 900 890 850 840
018
800 –40 25 85 125 2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
021
TEMPERATURE (°C)
13366-
VIN (V)
13366- Figure 18. Peak Current Limit vs. Temperature Figure 21. Peak Current Limit vs. VIN Rev. A | Page 10 of 21 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODES PWM Mode Hysteresis Mode Mode Selection OSILLATOR AND SYNCHRONIZATION ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE VOUTOK FUNCTION STOP SWITCHING THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR EFFICIENCY Power Switch Conduction Losses Inductor Losses Driver Losses Transition Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE