Datasheet ADP2108 (Analog Devices) - 9

Data Sheet ADP2108 SW SW 4 4 VOUT I 1 L 2 IOUT VOUT 1 2 EN
2
3
-03 035 75- 375 73 07 0
CH1 50mV CH2 50mA Ω M 40µs A CH2 12mA CH1 500mV CH2 500mA M 40µs A CH3 2.1V CH4 2V T 25.4% CH3 5V CH4 5V T 19.80%
Figure 22. Load Transient, VOUT = 1.8 V, 5 mA to 50 mA Figure 25. Start-Up, VOUT = 1.0 V, 600 mA
SW SW 4 4 IL IL 2 2 VOUT V EN OUT EN 1 1 3
3
3
36 -03 0 5- 75 37 073 07
CH1 1V CH2 250mA M 40µs A CH3 2V CH1 2V CH2 250mA M 40µs A CH3 2V CH3 5V CH4 5V T 10.80% CH3 5V CH4 5V T 10.80%
Figure 23. Start-Up, VOUT = 1.8 V, 400 mA Figure 26. Start-Up, VOUT = 3.3 V, 150 mA
SW 4 SW 4 IL 2 IL 2 VOUT EN 1 VOUT 3 1
4 7 -03 03 75- 375 73 07 0
CH1 1V CH2 250mA M 40µs A CH3 2V CH1 50mV CH2 500mA M 2µs A CH4 2.64mA CH3 5V CH4 5V T 10.80% CH4 2V T 20%
Figure 24. Start-Up, VOUT = 1.8 V, 5 mA Figure 27. Typical Power Save Mode Waveform, 50 mA Rev. H | Page 9 of 20 Document Outline Features Applications General Description Typical Applications Circuit Table of Contents Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Control Scheme PWM Mode Power Save Mode Power Save Mode Current Threshold Enable/Shutdown Short-Circuit Protection Undervoltage Lockout Thermal Protection Soft Start Current Limit 100% Duty Operation Applications Information ADIsimPower Design Tool External Component Selection Inductor Output Capacitor Input Capacitor Thermal Considerations PCB Layout Guidelines Evaluation Board Outline Dimensions Ordering Guide