Datasheet ADP2147 (Analog Devices) - 10

ADP2147 T SW T 1 4 IL 2 VOUT 1 2
0
CH1 10.0mVΩ CH2 500mA Ω M 40.0µs A CH4 1.32V CH1 100mV CH2 2.00V M 40.0µs A CH2 1.72V
13 026
CH4 2.00V
85- 85-
T 79.64µs T 50.00%
98 098 0 Figure 27. Typical Waveform, VOUT = 1.8 V, PWM Mode, IOUT = 200 mA Figure 30. VSEL Change Triggering VOUT Transition from 1.275 V to 0.981 V, ILOAD = 10 mA
130 T 1.8V, V 120 IN = 5.5V, AUTO 1.8V, VIN = 3.6V, AUTO 110 1.8V, VIN = 2.3V, AUTO 100 90 1 V) m 80 E ( 70 IPPL 60 R T 50 OUV 40 30 20 2 10
1
0 CH1 100mV CH2 2.00V M 40.0µs A CH2 1.76V
13
0.001 0.01 0.1 1
028 85-
T 50.20% I
098
OUT (A)
885- 09 Figure 28. VOUT Peak-to-Peak Ripple vs. Output Current, VOUT = 1.8 V Figure 31. VSEL Change Triggering VOUT Transition from 0.981 V to1.275 V, ILOAD = 200 mA
T T 1 1 2 2
9 2
CH1 100mV CH2 2.00V M 40.0µs A CH2 1.72V
12
CH1 100mV CH2 2.00V M 40.0µs A CH2 1.76V
13 85- 85-
T –1.966µs
098
T 30.00%
098 Figure 29. VSEL Change Triggering VOUT Transition from 0.981 V to 1.275 V, Figure 32. VSEL Change Triggering VOUT Transition from1.275 V to 0.981 V, ILOAD ILOAD = 10 mA = 200 mA Rev. 0 | Page 10 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATIONS CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA 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 SIMPLE DYNAMIC VOLTAGE SCALING (DVS) SHORT-CIRCUIT PROTECTION UNDERVOLTAGE LOCKOUT THERMAL PROTECTION SOFT START CURRENT LIMIT 100% DUTY OPERATION APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION Inductor Output Capacitor THERMAL CONSIDERATIONS PCB LAYOUT GUIDELINES EVALUATION BOARD EVALUATION BOARD LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE