Datasheet ADP5023 (Analog Devices) - 8

ADP5023 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VIN1 = VIN2 = VIN3 = 3.6 V, TA = 25°C, unless otherwise noted.
3.310 140 –40°C 3.305 120 A) 3.300 +25°C (µ 100 NT 3.295 ) RRE V 80 ( T 3.290 CU OU NT V 60 CE 3.285 +85°C S E UI 40 Q 3.280 20 3.275 0 3.270
8
2.3 2.8 3.3 3.8 4.3 4.8 5.3
139
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
-05 9
INPUT VOLTAGE (V) I
88 09889-
OUT (A)
09 Figure 3. System Quiescent Current vs. Input Voltage, VOUT1 = 3.3 V, Figure 6. BUCK1 Load Regulation Across Temperature, VIN = 4.2 V, VOUT2 = 1.8 V, VOUT3 = 1.2 V, VOUT4 = 3.3 V, All Channels Unloaded VOUT1 = 3.3 V, PWM Mode
1.812 T 1.810 –40°C SW 4 1.808 +25°C IOUT 2 ) V 1.806 ( T OU VOUT V 1.804 1 EN +85°C 1.802 3 1.800 1.798 CH1 2.00V CH2 50.0mA Ω M 40.0µs A CH3 2.2V
7
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CH3 5.00V CH4 5.00V
-021 -05 9
T 11.20% I
88 09889
OUT (A)
09 Figure 4. BUCK1 Startup, VOUT1 = 1.8 V, IOUT1 = 5 mA Figure 7. BUCK2 Load Regulation Across Temperature, VIN = 3.6 V, VOUT2 = 1.8 V, PWM Mode
T 0.808 0.807 SW 4 IOUT 0.806 +25°C 2 –40°C ) V ( T 0.805 OU VOUT V 1 0.804 EN +85°C 0.803 3 CH1 2.00V CH2 50.0mA Ω M 40.0µs A CH3 2.2V 0.802
4
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CH3 5.00V CH4 5.00V
-020 -05 9
T 11.20% I
88 09889
OUT (A)
09 Figure 5. BUCK2 Startup, VOUT2 = 3.3 V, IOUT2 = 10 mA Figure 8. BUCK1 Load Regulation Across Temperature, VIN = 3.6 V, VOUT1 = 0.8 V, PWM Mode Rev. F | Page 8 of 28 Document Outline Features Applications General Description Typical Application Circuit Table of Contents Revision History Specifications General Specifications BUCK1 and BUCK2 Specifications LDO Specifications Input and Output Capacitor, Recommended Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Power Management Unit Thermal Protection Undervoltage Lockout Enable/Shutdown BUCK1 and BUCK2 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs LDO Applications Information Buck External Component Selection Feedback Resistors Inductor Output Capacitor Input Capacitor LDO External Component Selection Feedback Resistors Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Power Dissipation and Thermal Considerations Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature PCB Layout Guidelines Typical Application Schematics Bill of Materials Outline Dimensions Ordering Guide