Datasheet ADP5133 (Analog Devices) - 10

ADP5133 Data Sheet T T VOUT 1 VIN ISW VOUT 2 1 SW SW 43 4 CH1 50mV CH2 500mA M 400ns A CH2 220mA
7
CH1 50.0mV M 1.00ms A CH3 4.80V CH4 2.00V
-02
CH3 1.00V CH4 2.00V
-013 91
T 28.40%
991
T 30.40%
11 119 Figure 21. Typical Waveforms, VOUT1 = 3.3 V, IOUT1 = 30 mA, PWM Mode Figure 24. BUCK2 Response to Line Transient, VIN = 4.5 V to 5.0 V, VOUT2 = 1.8 V, PWM Mode
T T VOUT SW 1 4 ISW 2 VOUT 1 SW IOUT 4 2 CH1 50mV CH2 500mA M 400ns A CH2 220mA
6
CH4 2.00V
-02
CH1 50.0mV CH2 50.0mA M 20.0µs A CH2 356mA
-016 91
T 28.40%
991
CH4 5.00V T 60.000µs
11 119 Figure 22. Typical Waveforms, VOUT2 = 1.8 V, IOUT2 = 30 mA, PWM Mode Figure 25. BUCK1 Response to Load Transient, IOUT1 from 1 mA to 50 mA, VOUT1 = 3.3 V, Auto PWM/PSM Mode
T T SW VIN 4 VOUT VOUT 1 1 SW IOUT 3 2 CH1 50.0mV M 1.00ms A CH3 4.80V CH1 50.0mV CH2 50.0mA M 20.0µs A CH2 379mA
15
CH3 1.00V CH4 2.00V
-012
CH4 5.00V
-0 1 91
T 30.40% T 22.20%
199 119 1 Figure 23. Buck1 Response to Line Transient, Input Voltage from 4.5 V to Figure 26. BUCK2 Response to Load Transient, IOUT2 from 1 mA to 50 mA, 5.0 V, V V OUT1 = 3.3 V, PWM Mode OUT2 = 1.8 V, Auto PWM/PSM Mode Rev. A | Page 10 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS BUCK1 AND BUCK2 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 Auto PSM/PWM Operation PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor POWER DISSIPATION AND THERMAL CONSIDERATIONS BUCK REGULATOR POWER DISSIPATION JUNCTION TEMPERATURE PCB LAYOUT GUIDELINES TYPICAL APPLICATION SCHEMATICS OUTLINE DIMENSIONS ORDERING GUIDE