Datasheet ADP5135 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | Triple 1800 mA Buck Regulators With Precision Enables and Power Good Outputs |
| Páginas / Página | 24 / 10 — ADP5135. Data Sheet. VOUT2. ISW2. VSW2. CH1 50mV. CH2 2.0V. M8.0µs. A CH2 … |
| Formato / tamaño de archivo | PDF / 795 Kb |
| Idioma del documento | Inglés |
ADP5135. Data Sheet. VOUT2. ISW2. VSW2. CH1 50mV. CH2 2.0V. M8.0µs. A CH2 2.20V. M400ns. CH3 500mA. T 10.20%. VOUT3. SW3. VSW3. VIN1. VOUT1. ISW1. VSW1
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ADP5135 Data Sheet T T VOUT2 VOUT2 1 1 ISW2 ISW2 3 3 VSW2 2 2 VSW2 CH1 50mV CH2 2.0V M8.0µs A CH2 2.20V
-021
CH1 50mV CH2 2.0V M400ns A CH2 2.20V
-024
CH3 500mA T 10.20% CH3 500mA T 10.20%
12604 12604 Figure 21. Typical Waveforms, VOUT2 = 1.8 V, Load Current = 50 mA, Figure 24. Typical Waveforms, VOUT2 = 1.8 V, Load Current = 50 mA, Auto Mode PWM Mode
T T VOUT3 VOUT3 1 1 I I SW3 SW3 3 3 VSW3 2 2 VSW3 CH1 50mV CH2 2.0V M8.0µs A CH2 2.20V
-022
CH1 50mV CH2 2.0V M400ns A CH2 2.20V
-025
CH3 500mA T 10.20%
12604
CH3 500mA T 10.20%
12604 Figure 22. Typical Waveforms, VOUT3 = 1.2 V, Load Current = 50 mA, Figure 25. Typical Waveforms, VOUT3 = 1.2 V, Load Current = 50 mA, Auto Mode PWM Mode
T T VIN1 VOUT1 1 ISW1 3 VOUT1 2 VSW1 3 2 VSW1 4 CH1 50mV CH2 2.0V M400ns A CH2 2.20V
-023
CH2 50.0mV M1ms A CH3 5.08V
-026
CH3 500mA T 10.20% CH3 1.0V CH4 2.0V
12604
T 10.10%
12604 Figure 23. Typical Waveforms, VOUT1 = 3.3 V, Load Current = 50 mA, Figure 26. BUCK1 Response to Line Transient, Input Voltage from 4.5 V to PWM Mode 5.5 V, VOUT1 = 3.3 V, Load Current = 50 mA, PWM Mode Rev. 0 | Page 10 of 24 Document Outline Features Applications Typical Application Circuit General Description Revision History Specifications BUCK1, BUCK2, and BUCK3 Input and Output Capacitors, Recommended Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Power Management Unit Power-Good Output Thermal Protection Undervoltage Lockout Precision Enable and Shutdown Control Buck Regulators: BUCK1, BUCK2, AND BUCK3 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Buck Regulator Soft Start Current Limit 100% Duty Operation Active Pull-Down Resistors Applications Information Buck External Component Selection Feedback Resistors Inductor Output Capacitor Input Capacitor Typical Application Schematics Power Dissipation and Thermal Considerations Buck Regulator Power Dissipation Junction Temperature PCB Layout Guidelines Outline Dimensions Ordering Guide
-021
CH1 50mV CH2 2.0V M400ns A CH2 2.20V
-024
CH3 500mA T 10.20% CH3 500mA T 10.20%
12604 12604 Figure 21. Typical Waveforms, VOUT2 = 1.8 V, Load Current = 50 mA, Figure 24. Typical Waveforms, VOUT2 = 1.8 V, Load Current = 50 mA, Auto Mode PWM Mode
T T VOUT3 VOUT3 1 1 I I SW3 SW3 3 3 VSW3 2 2 VSW3 CH1 50mV CH2 2.0V M8.0µs A CH2 2.20V
-022
CH1 50mV CH2 2.0V M400ns A CH2 2.20V
-025
CH3 500mA T 10.20%
12604
CH3 500mA T 10.20%
12604 Figure 22. Typical Waveforms, VOUT3 = 1.2 V, Load Current = 50 mA, Figure 25. Typical Waveforms, VOUT3 = 1.2 V, Load Current = 50 mA, Auto Mode PWM Mode
T T VIN1 VOUT1 1 ISW1 3 VOUT1 2 VSW1 3 2 VSW1 4 CH1 50mV CH2 2.0V M400ns A CH2 2.20V
-023
CH2 50.0mV M1ms A CH3 5.08V
-026
CH3 500mA T 10.20% CH3 1.0V CH4 2.0V
12604
T 10.10%
12604 Figure 23. Typical Waveforms, VOUT1 = 3.3 V, Load Current = 50 mA, Figure 26. BUCK1 Response to Line Transient, Input Voltage from 4.5 V to PWM Mode 5.5 V, VOUT1 = 3.3 V, Load Current = 50 mA, PWM Mode Rev. 0 | Page 10 of 24 Document Outline Features Applications Typical Application Circuit General Description Revision History Specifications BUCK1, BUCK2, and BUCK3 Input and Output Capacitors, Recommended Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Power Management Unit Power-Good Output Thermal Protection Undervoltage Lockout Precision Enable and Shutdown Control Buck Regulators: BUCK1, BUCK2, AND BUCK3 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Buck Regulator Soft Start Current Limit 100% Duty Operation Active Pull-Down Resistors Applications Information Buck External Component Selection Feedback Resistors Inductor Output Capacitor Input Capacitor Typical Application Schematics Power Dissipation and Thermal Considerations Buck Regulator Power Dissipation Junction Temperature PCB Layout Guidelines Outline Dimensions Ordering Guide