Datasheet ADP2300, ADP2301 (Analog Devices) - 7

Data Sheet ADP2300/ADP2301 100 0.20 fSW = 1.4MHz f 0.15 SW = 700kHz 90 0.10 ) % 80 ( %) 0.05 ( Y TION C A N 70 0 IE UL G FFIC RE –0.05 E 60 INE L –0.10 50 VOUT = 1.8V –0.15 INDUCTOR: LPS6225-472MLC VOUT = 1.2V DIODE: B230A VOUT = 0.8V 40 –0.20 0 0.2 0.4 0.6 0.8 1.0 1.2 5 8 11 14 17 20
089 068
I V OUT (A) IN (V)
08342- 08342- Figure 10. Efficiency Curve, VIN = 3.3 V with External 5.0 V Bootstrap Bias Figure 13. Line Regulation, VOUT = 3.3 V, IOUT = 500 mA Voltage, fSW = 1.4 MHz
100 1600 VOUT = 1.8V fSW = 1.4MHz VOUT = 1.2V f V SW = 700kHz OUT = 0.8V 90 1400 80 ) 1200 %) ( kHz Y ( C Y N 70 NC 1000 IE UE Q FFIC E 60 RE 800 F 50 600 INDUCTOR: LPS6225-103MLC DIODE: B230A 40 400 0 0.2 0.4 0.6 0.8 1.0 1.2 –50 –20 10 40 70 100 130
066 076
IOUT (A) TEMPERATURE (°C)
08342- 08342- Figure 11. Efficiency Curve, VIN = 3.3 V with External 5.0 V Bootstrap Bias Figure 14. Frequency vs. Temperature Voltage, fSW = 700 kHz
0.20 1600 F f SW = 1.4MHz SW = 1.4MHz F fSW = 700kHz 0.15 SW = 700kHz 1400 0.10 ) % ( ) 1200 0.05 kHz TION ( A Y 0 UL NC 1000 G UE Q –0.05 AD RE RE F 800 O L –0.10 600 –0.15 –0.20 400 0 0.2 0.4 0.6 0.8 1.0 1.2 2 5 8 11 14 17 20
067 077
IOUT (A) VIN (V)
08342- 08342- Figure 12. Load Regulation, VOUT = 3.3 V, VIN = 12 V Figure 15. Frequency vs. VIN Rev. C | Page 7 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown Control Loop Applications Information ADIsimPower Design Tool Programming the Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Considerations Design Example Switching Frequency Selection Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide