Datasheet ADP2300, ADP2301 (Analog Devices) - 8

ADP2300/ADP2301 Data Sheet 40 160 fSW = 1.4MHz fSW = 700kHz 35 140 A) 30 ) 120 µ ( ns ( NT 25 E 100 20 80 N CURRE OFF TIM W M 15 U 60 DO IM IN HUT 10 M S 40 5 TJ = −40°C 20 TJ = +25°C TJ = +125°C 0 0 2 5 8 11 14 17 20 –50 –20 10 40 70 100 130
078 081
VIN (V) TEMPERATURE (°C)
08342- 08342- Figure 16. Shutdown Current vs. VIN Figure 19. Minimum Off Time vs. Temperature
0.804 2.5 0.802 2.0 E (V) G 0.800 A A) ( LT O IT 1.5 IM 0.798 L NT DBACK V 1.0 E E 0.796 F CURRE 8V 0. 0.5 0.794 0.792 0 –50 –20 10 40 70 100 130
079
2 5 8 11 14 17 20
082
TEMPERATURE (°C)
08342-
VIN (V)
08342- Figure 17. 0.8 V Feedback Voltage vs. Temperature Figure 20. Current-Limit Threshold vs. VIN, VBST − VSW = 5.0 V
110 2.5 105 2.0 ) s 100 A) ( IME (n IT 1.5 T IM N 95 L NT M O 1.0 IMU N 90 CURRE MI 0.5 85 80 0 –50 –20 10 40 70 100 130
080
–50 –20 10 40 70 100 130
083
TEMPERATURE (°C) TEMPERATURE (°C)
08342- 08342- Figure 18. Minimum On Time vs. Temperature Figure 21. Current-Limit Threshold vs. Temperature Rev. C | Page 8 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