Datasheet ADP2230 (Analog Devices) - 8

ADP2230 Data Sheet 1.24 600 VOUT = 1.2V TA = –40°C fSW = 2MHz TA = +25°C TA = +125°C 500 1.22 ) (V 400 GE N 1.20 A T L DSO O R 300 V S T U 1.18 PMO TP 200 OU IOUT = 1mA 1.16 IOUT = 10mA 100 IOUT = 100mA IOUT = 500mA IOUT = 800mA 1.14 0 2.3 3.3 4.3 5.3 6.3
13 21 1
2.3 3.3 4.3 5.3 6.3
0 5-
INPUT VOLTAGE (V)
0705- 1070
INPUT VOLTAGE (V)
1 Figure 9. Line Regulation, VOUT = 1.2 V, Different Loads Figure 12. PMOS Drain-to-Source On Resistance (RDSON)
3.32 1.60 VOUT = 3.3V V f OUT = 1.2V SW = 2MHz V 1.55 OUT = 1.8V 3.31 VOUT = 3.3V 1.50 A) ( ) 3.3 IT (V IM 1.45 GE L A NT LT 3.29 1.40 O V RRE UT CU 1.35 P 3.28 S T O M OU P 1.30 IOUT = 1mA 3.27 IOUT = 10mA IOUT = 100mA 1.25 IOUT = 500mA IOUT = 800mA 3.26 1.20
4 17 11
3.6 4.1 4.6 5.1 5.6 6.1 2.3 3.3 4.3 5.3 6.3
1 705-
INPUT VOLTAGE (V) INPUT VOLTAGE (V)
0705- 10 1 Figure 10. Line Regulation, VOUT = 3.3 V, Different Loads Figure 13. PMOS Current Limit vs. Input Voltage, Different Output Voltages
600 TA = –40°C TA = +25°C T LOAD CURRENT (50mA/DIV) A = +125°C 500 400 N 4 O DSR300 S O OUTPUT VOLTAGE (50mA/DIV) NM AC-COUPLED 200 1 100
027
0
2 5-
2.3 3.3 4.3 5.3 6.3
02
TIME (40µs/DIV)
1070
INPUT VOLTAGE (V)
705- 10 Figure 11. NMOS Drain-to-Source On Resistance (RDSON) Figure 14. Load Transient Response, VOUT = 1.2 V, Auto Mode, 10 mA to 110 mA Rev. A | Page 8 of 18 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS RECOMMENDED COMPONENT SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OVERVIEW OPERATING CONDITIONS Input Voltage Output Voltage SYNC PIN CONTROL SCHEMES PWM Mode PSM/PWM Automatic Transitioning Mode External Clock Synchronization FEATURES DESCRIPTIONS Precision Enable Quick Output Discharge Output Short-Circuit Protection Undervoltage Lockout Thermal Shutdown Soft Start Current Limit 100% Duty Cycle APPLICATIONS INFORMATION SETTING THE OUTPUT VOLTAGE SELECTING THE INDUCTOR SELECTING THE INPUT AND OUTPUT CAPACITORS Input Capacitor Output Capacitor PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE