Datasheet ADP2140 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 3 MHz, 600 mA, Low Quiescent Current Buck with 300 mA LDO Regulator |
| Pages / Page | 32 / 10 — ADP2140. Data Sheet. INPUT VOLTAGE. OUTPUT VOLTAGE. SWITCH NODE. CH1 … |
| Revision | A |
| File Format / Size | PDF / 2.8 Mb |
| Document Language | English |
ADP2140. Data Sheet. INPUT VOLTAGE. OUTPUT VOLTAGE. SWITCH NODE. CH1 1.00V. CH2 50.0mV. M20.0µs. A CH1 4.68V. CH2 20.0mV. CH3 5.00V. T 11.60%
Model Line for this Datasheet
Text Version of Document
ADP2140 Data Sheet
VIN1 = 4 V, VOUT = 1.8 V, IOUT = 10 mA, CIN = COUT = 10 µF, TA = 25°C, unless otherwise noted.
T INPUT VOLTAGE T INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT VOLTAGE 2 2 1 1 SWITCH NODE SWITCH NODE 3 3 CH1 1.00V CH2 50.0mV M20.0µs A CH1 4.68V
022
CH1 1.00V CH2 20.0mV M20.0µs A CH1 4.68V
025
CH3 5.00V T 11.60% CH3 5.00V T 11.60%
07932- 07932- Figure 22. Line Transient, VOUT = 1.2 V, PSM Mode, 50 mA, VIN1 = 4 V to 5 V, Figure 25. Line Transient, VOUT = 3.3 V, PWM Mode, 600 mA, VIN1 = 4 V to 5 V, 4 μs Rise Time 4 μs Rise Time
T INPUT VOLTAGE T SWITCH NODE 3 LOAD CURRENT 2 OUTPUT VOLTAGE 1 1 2 SWITCH NODE OUTPUT VOLTAGE 3 CH1 1.00V CH2 20.0mV M20.0µs A CH1 4.32V
023
CH1 200mA CH2 50.0mV M20.0µs A CH1 288mA
026
CH3 5.00V T 10.80% CH3 5.00V T 10.40%
07932- 07932- Figure 23. Line Transient, VOUT = 1.2 V, PWM Mode, 600 mA, VIN1 = 4 V to 5 V, Figure 26. Load Transient, VOUT = 1.8 V, 200 mA to 600 mA, Load Current Rise 4 μs Rise Time Time = 200 ns
T INPUT VOLTAGE T SWITCH NODE 3 OUTPUT VOLTAGE LOAD OUTPUT 2 1 1 2 SWITCH NODE OUTPUT VOLTAGE 3 CH1 1.00V CH2 50.0mV M20.0µs A CH1 4.68V
024
CH1 100mA CH2 50.0mV M20.0µs A CH1 136mA
027
CH3 5.00V T 11.60% CH3 5.00V T 10.40%
07932- 07932- Figure 24. Line Transient, VOUT = 3.3 V, PSM Mode, 50 mA, VIN1 = 4 V to 5 V, Figure 27. Load Transient, VOUT = 1.8 V, 50 mA to 250 mA, Load Current Rise 4 μs Rise Time Time = 200 ns Rev. A | Page 10 of 32 Document Outline Features Applications General Description Typical Application Circuits Revision History Specifications Recommended Specifications: Capacitors and Inductor Pin Configuration and Function Descriptions Typical Performance Characteristics Buck Output LDO Output Theory of Operation Buck Section Control Scheme PWM Operation PSM Operation Pulse Skipping Threshold Selected Features Short-Circuit Protection Undervoltage Lockout Thermal Protection Soft Start Current Limit Power-Good Pin LDO Section Applications Information Power Sequencing Power-Good Function External Component Selection Selecting the Inductor Output Capacitor Input Capacitor Efficiency Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses Recommended Buck External Components LDO Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties LDO as a Postregulator to Reduce Buck Output Noise Thermal Considerations PCB Layout Considerations Outline Dimensions Ordering Guide
VIN1 = 4 V, VOUT = 1.8 V, IOUT = 10 mA, CIN = COUT = 10 µF, TA = 25°C, unless otherwise noted.
T INPUT VOLTAGE T INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT VOLTAGE 2 2 1 1 SWITCH NODE SWITCH NODE 3 3 CH1 1.00V CH2 50.0mV M20.0µs A CH1 4.68V
022
CH1 1.00V CH2 20.0mV M20.0µs A CH1 4.68V
025
CH3 5.00V T 11.60% CH3 5.00V T 11.60%
07932- 07932- Figure 22. Line Transient, VOUT = 1.2 V, PSM Mode, 50 mA, VIN1 = 4 V to 5 V, Figure 25. Line Transient, VOUT = 3.3 V, PWM Mode, 600 mA, VIN1 = 4 V to 5 V, 4 μs Rise Time 4 μs Rise Time
T INPUT VOLTAGE T SWITCH NODE 3 LOAD CURRENT 2 OUTPUT VOLTAGE 1 1 2 SWITCH NODE OUTPUT VOLTAGE 3 CH1 1.00V CH2 20.0mV M20.0µs A CH1 4.32V
023
CH1 200mA CH2 50.0mV M20.0µs A CH1 288mA
026
CH3 5.00V T 10.80% CH3 5.00V T 10.40%
07932- 07932- Figure 23. Line Transient, VOUT = 1.2 V, PWM Mode, 600 mA, VIN1 = 4 V to 5 V, Figure 26. Load Transient, VOUT = 1.8 V, 200 mA to 600 mA, Load Current Rise 4 μs Rise Time Time = 200 ns
T INPUT VOLTAGE T SWITCH NODE 3 OUTPUT VOLTAGE LOAD OUTPUT 2 1 1 2 SWITCH NODE OUTPUT VOLTAGE 3 CH1 1.00V CH2 50.0mV M20.0µs A CH1 4.68V
024
CH1 100mA CH2 50.0mV M20.0µs A CH1 136mA
027
CH3 5.00V T 11.60% CH3 5.00V T 10.40%
07932- 07932- Figure 24. Line Transient, VOUT = 3.3 V, PSM Mode, 50 mA, VIN1 = 4 V to 5 V, Figure 27. Load Transient, VOUT = 1.8 V, 50 mA to 250 mA, Load Current Rise 4 μs Rise Time Time = 200 ns Rev. A | Page 10 of 32 Document Outline Features Applications General Description Typical Application Circuits Revision History Specifications Recommended Specifications: Capacitors and Inductor Pin Configuration and Function Descriptions Typical Performance Characteristics Buck Output LDO Output Theory of Operation Buck Section Control Scheme PWM Operation PSM Operation Pulse Skipping Threshold Selected Features Short-Circuit Protection Undervoltage Lockout Thermal Protection Soft Start Current Limit Power-Good Pin LDO Section Applications Information Power Sequencing Power-Good Function External Component Selection Selecting the Inductor Output Capacitor Input Capacitor Efficiency Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses Recommended Buck External Components LDO Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties LDO as a Postregulator to Reduce Buck Output Noise Thermal Considerations PCB Layout Considerations Outline Dimensions Ordering Guide
