Datasheet ADP5303 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | 50 mA/500 mA, Ultralow Power Step-Down Regulator with Battery Voltage Monitor |
| Páginas / Página | 21 / 10 — ADP5303. Data Sheet. 801. 810. 808. ACTIVE TO STANDBY. 806. 800. 804. … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 768 Kb |
| Idioma del documento | Inglés |
ADP5303. Data Sheet. 801. 810. 808. ACTIVE TO STANDBY. 806. 800. 804. STANDBY TO ACTIVE. 802. O 799. DBACK V. 798. F 798. 796. 794. 797. 792. –40. 125
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ADP5303 Data Sheet 801 810 808 ACTIVE TO STANDBY ) ) 806 800 mV mV ( ( E E 804 AG AG STANDBY TO ACTIVE T T L L 802 O 799 O 800 DBACK V DBACK V 798 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)
13444- 13444- Figure 16. Feedback Voltage vs. Temperature, PWM Mode Figure 19. Feedback Voltage vs. Temperature, Hysteresis Mode
800 500 –40ºC –40ºC 700 +25ºC 450 +25ºC +125ºC +125ºC Ω) ) (m 600 (mΩ H 400 ) L N N) (O O S ( D 500 R DS 350 E E R ID D -S H 400 -SI 300 IG W H O L 300 250
7
200
-01
2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5 200
444 020
V 2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
13
IN (V) VIN (V)
13444- Figure 17. High-Side RDS (ON) H vs. VIN Figure 20. Low-Side RDS (ON) L vs. VIN
1090 1200 –40°C 1150 +25°C +125°C 1040 1100 mA) mA) ( ( IT IT 1050 IM 990 IM L L NT NT 1000 940 950 AK CURRE AK CURRE E E P P 900 890 850 840 800 –40 25 85 125
018
2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
021
TEMPERATURE (°C)
13444-
VIN (V)
13444- 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 OSCILLATOR 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 CYCLE OPERATION ACTIVE DISCHARGE VINOK FUNCTION 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 PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE
019
–40 25 85 125
016
–40 25 85 125 TEMPERATURE (°C) TEMPERATURE (°C)
13444- 13444- Figure 16. Feedback Voltage vs. Temperature, PWM Mode Figure 19. Feedback Voltage vs. Temperature, Hysteresis Mode
800 500 –40ºC –40ºC 700 +25ºC 450 +25ºC +125ºC +125ºC Ω) ) (m 600 (mΩ H 400 ) L N N) (O O S ( D 500 R DS 350 E E R ID D -S H 400 -SI 300 IG W H O L 300 250
7
200
-01
2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5 200
444 020
V 2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
13
IN (V) VIN (V)
13444- Figure 17. High-Side RDS (ON) H vs. VIN Figure 20. Low-Side RDS (ON) L vs. VIN
1090 1200 –40°C 1150 +25°C +125°C 1040 1100 mA) mA) ( ( IT IT 1050 IM 990 IM L L NT NT 1000 940 950 AK CURRE AK CURRE E E P P 900 890 850 840 800 –40 25 85 125
018
2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
021
TEMPERATURE (°C)
13444-
VIN (V)
13444- 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 OSCILLATOR 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 CYCLE OPERATION ACTIVE DISCHARGE VINOK FUNCTION 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 PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE