Datasheet ADP1882, ADP1883 (Analog Devices) - 8

ADP1882/ADP1883 100 0.820 V 95 DD = 5.5V/VIN = 5.5V (PSM) VDD = 3.6V/VIN = 3.6V 0.818 90 VDD = 5.5V/VIN = 5.5V 0.816 85 0.814 80 ) 0.812 75 V ) ( 0.810 % 70 E ( 0.808 Y V 65 DD = 3.6V/VIN = 13V AG C T L 0.806 60 O IEN VDD = 5.5V/VIN = 16.5V V 0.804 IC 55 F VDD = 5.5V/VIN = 13V UT 0.802 50 P EF 0.800 45 TA = 25°C UT V O OUT = 0.8V, VIN = 5.5V 40 0.798 FSW = 1MHz 35 0.796 V V IN = 5.5V VIN = 13V IN = 16.5V WURTH INDUCTOR: 30 0.794 +125°C +125°C +125°C 744303022, L = 0.22µH, DCR: 0.33mΩ +25°C +25°C +25°C 25 INFINEON MOSFETS: 0.792 –40°C –40°C –40°C BSC042N03MS G (UPPER/LOWER) 20 0.790
10 0
100 1k 10k 100k
13
0 2k 4k 6k 8k 10k 12k 14k 16k
0 1- 1- 90
LOAD CURRENT (mA)
90 08
LOAD CURRENT (mA)
08 Figure 10. Efficiency—1.0 MHz, VOUT = 0.8 V Figure 13. Output Voltage Accuracy—300 kHz, VOUT = 0.8 V
100 V 95 DD = 5.5V/VIN = 5.5V (PSM) VDD = 5.5V/VIN = 5.5V 1.809 V 90 DD = 5.5V/VIN = 13V 85 80 1.804 ) V 75 V ( ) DD = 3.6V/VIN = 16.5V E % 70 ( VDD = 5.5V/VIN = 16.5V AG Y 1.799 65 T C L V N DD = 3.6V/VIN = 13V O 60 IE V T 55 IC U F P 1.794 50 T EF 45 OU TA = 25°C 40 VOUT = 1.8V, VIN = 5.5V FSW = 1MHz 1.789 V V IN = 5.5V VIN = 13V IN = 16.5V 35 WURTH INDUCTOR: +125°C +125°C +125°C 30 744303022, L = 0.22µH, DCR: 0.33mΩ +25°C +25°C +25°C INFINEON MOSFETS: 25 –40°C –40°C –40°C BSC042N03MS G (UPPER/LOWER) 1.784 20
4 11
0 1.5k 3.0k 4.5k 6.0k 7.5k 9.0k 10.5k 12.0k 13.5k 15.0k
01 0
100 1k 10k 100k
1- 1- 90 90
LOAD CURRENT (mA) LOAD CURRENT (mA)
08 08 Figure 11. Efficiency—1.0 MHz, VOUT = 1.8 V Figure 14. Output Voltage Accuracy—300 kHz, VOUT = 1.8 V
100 6.970 V V 95 DD = 3.6V, DD = 5.5V, 6.965 V V V IN = 16.5V IN = 13V DD = 5.5V/VIN = 16.5V (PSM) 90 6.960 +125°C +125°C +25°C +25°C 85 6.955 –40°C –40°C 80 ) V 6.950 ) ( 75 E % 6.945 ( Y 70 VDD = 5.5V/VIN = 16.5V AG C T L 6.940 N 65 O IE V 6.935 IC 60 VDD = 5.5V/VIN = 13V F UT P 6.930 EF 55 UT 6.925 50 T O A = 25°C VOUT = 4V, VIN = 16.5V 45 6.920 F V V SW = 1MHz DD = 5.5V, DD = 3.6V, VIN = 16.5V VIN = 13V 40 WURTH INDUCTOR: 6.915 744318180, L = 1.4µH, DCR: 3.2mΩ +125°C +125°C 35 INFINEON MOSFETS: 6.910 +25°C +25°C BSC042N03MS G (UPPER/LOWER) –40°C –40°C 30 6.905
12
100 1k 10k
15 0
0 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k
0 1- 1- 90 90
LOAD CURRENT (mA) LOAD CURRENT (mA)
08 08 Figure 12. Efficiency—1.0 MHz, VOUT = 4 V Figure 15. Output Voltage Accuracy—300 kHz, VOUT = 7 V Rev. 0 | Page 8 of 40 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS ADP1882/ADP1883 BLOCK DIAGRAM THEORY OF OPERATION STARTUP SOFT START PRECISION ENABLE CIRCUITRY UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN PROGRAMMING RESISTOR (RES) DETECT CIRCUIT VALLEY CURRENT-LIMIT SETTING HICCUP MODE DURING SHORT CIRCUIT SYNCHRONOUS RECTIFIER POWER SAVING MODE (PSM) VERSION (ADP1883) TIMER OPERATION PSEUDO-FIXED FREQUENCY APPLICATIONS INFORMATION FEEDBACK RESISTOR DIVIDER INDUCTOR SELECTION OUTPUT RIPPLE VOLTAGE (ΔVRR) OUTPUT CAPACITOR SELECTION COMPENSATION NETWORK Output Filter Impedance (ZFILT) Error Amplifier Output Impedance (ZCOMP) Error Amplifier Gain (GM) Current-Sense Loop Gain (GCS) Crossover Frequency EFFICIENCY CONSIDERATIONS Channel Conduction Loss MOSFET Driver Loss Switching Loss Diode Conduction Loss Inductor Loss INPUT CAPACITOR SELECTION THERMAL CONSIDERATIONS DESIGN EXAMPLE Input Capacitor Inductor Current Limit Programming Output Capacitor Feedback Resistor Network Setup Compensation Network Loss Calculations EXTERNAL COMPONENT RECOMMENDATIONS LAYOUT CONSIDERATIONS IC SECTION (LEFT SIDE OF EVALUATION BOARD) POWER SECTION DIFFERENTIAL SENSING TYPICAL APPLICATIONS CIRCUITS DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT SINGLE-INPUT, 600 kHz APPLICATIONS CIRCUIT DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT OUTLINE DIMENSIONS ORDERING GUIDE