Datasheet ADP5033 (Analog Devices) - 10

ADP5033 Data Sheet 100 3.3 90 3.2 80 3.1 70 z) %) 3.0 ( 60 Y (MH NCY C 50 2.9 E EN ICI U F 40 F EQ 2.8 E R F 30 2.7 20 T +25°C 2.6 A = +25°C 10 +85°C TA = –40°C –40°C TA = +85°C 0 2.5 0.001 0.01 0.1 1
062
0 0.2 0.4 0.6 0.8 1.0 1.2
040
I I OUT (A) OUT (A)
09788- 09788- Figure 15. BUCK1 Efficiency vs. Load Current, Across Temperature, Figure 18. BUCK2 Switching Frequency vs. Output Current, Across VIN1 = 3.9 V, VOUT1 = 3.3 V, Auto Mode Temperature, VOUT2 = 1.8 V, PWM Mode
100 T 90 VOUT 80 1 70 %) ISW ( 60 NCY 50 2 E ICI F 40 F SW E 30 20 +85°C 10 +25°C 4 –40°C 0 CH2 500mA Ω 0.001 0.01 0.1 1 CH1 50.0mV M 4.00µs A CH2 240mA
063 251
CH4 2.00V IOUT (A) T 28.40%
09788- 09788- Figure 16. BUCK2 Efficiency vs. Load Current, Across Temperature, Figure 19. Typical Waveforms, VOUT1 = 3.3 V, IOUT1 = 30 mA, Auto Mode VOUT2 = 1.8 V, Auto Mode
100 T 90 VOUT 80 1 70 %) ( 60 ISW NCY 50 2 E ICI F 40 F E 30 SW 20 +85°C 10 +25°C 4 –40°C 0 CH1 50.0mV BW CH2 500mA Ω M 4.00µs A CH2 220mA 0.001 0.01 0.1 1
200 250
CH4 2.00V BW IOUT (A) T 28.40%
09788- 09788- Figure 17. BUCK1 Efficiency vs. Load Current, Across Temperature, Figure 20. Typical Waveforms, VOUT2 = 1.8 V, IOUT2 = 30 mA, Auto Mode VOUT1 = 0.8 V, Auto Mode Rev. H | Page 10 of 28 Document Outline Features Applications Typical Application Circuit General Description Revision History Specifications General Specifications BUCK1 and BUCK2 Specifications LDO1 and LDO2 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 PSM PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs LDO1 and LDO2 Applications Information Buck External Component Selection Inductor Output Capacitor Input Capacitor LDO Capacitor Selection 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 Schematic Outline Dimensions Ordering Guide