Datasheet ADP2302, ADP2303 (Analog Devices) - 10

ADP2302/ADP2303 Data Sheet VOUT VOUT 1 IL 1 IL 4 4 EN EN SW SW 3 3 2 2
1
CH1 2.00V BW CH2 10.0V M1.00ms A CH3 6.20V
028
CH1 2.00V BW CH2 10.0V M1.00ms A CH3 3.60V
03 3-
CH3 10.0V B T 20.20%
33-
W CH4 2.00A Ω CH3 10.0V B T 20.20%
88
W CH4 2.00A Ω
0 883 0 Figure 28. Soft Start Without Load, VOUT = 3.3 V, VIN = 12 V Figure 31. Soft Start with Full Load, VOUT = 3.3 V, VIN = 12 V
VOUT (AC) VOUT (AC) 1 1 IO IO 4 4 CH1 500mV BW M200µs A CH4 1.20A
-029 32
CH1 200mV BW M200µs A CH4 1.88A
-0
CH4 2.00A Ω T 20.00%
833 33 8 08
CH4 2.00A Ω T 20.00%
8 0 Figure 29. ADP2303 Load Transient, 0.5 A to 3.0 A, VOUT = 5.0 V, VIN = 12 V, Figure 32. ADP2303 Load Transient, 0.5 A to 3.0 A, VOUT = 3.3 V, VIN = 12 V, L = 4.7 μH, COUT = 47 μF L = 4.7 μH, COUT = 2 × 47 μF
VOUT (AC) VOUT (AC) 1 1 IO IO 4 4 CH1 200mV B
030 033
W M200µs A CH4 1.20A CH1 200mV B
3-
W M200µs A CH4 1.20A
3-
CH4 1.00A Ω T 20.00%
883
CH4 1.00A Ω T 20.00%
883 0 0 Figure 30. ADP2302 Load Transient, 0.5 A to 2.0 A, VOUT = 5.0 V, VIN = 12 V, Figure 33. ADP2302 Load Transient, 0.5 A to 2.0 A, VOUT = 3.3 V, VIN = 12 V, L = 6.8 μH, COUT = 2 × 22 μF L = 6.8 μH, COUT = 2 × 22 μF Rev. A | Page 10 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 (TSD) Overvoltage Protection (OVP) Power Good Control Loop Applications Information ADIsimPower Design Tool Programming Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Consideration Design Example Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide