Datasheet ADP2138, ADP2139 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | Compact, 800 mA, 3 MHz, Step-Down DC-to-DC Converter with an Internal Discharge Switch |
| Seiten / Seite | 20 / 9 — Data Sheet. ADP2138/ADP2139. VIN. VOUT. IOUT. CH1 100mV. CH2 250mA Ω. M … |
| Revision | C |
| Dateiformat / Größe | PDF / 551 Kb |
| Dokumentensprache | Englisch |
Data Sheet. ADP2138/ADP2139. VIN. VOUT. IOUT. CH1 100mV. CH2 250mA Ω. M 40.0µs A CH2 275mA. CH1 20.0mV. M 40.0µs. A CH3 4.50V. CH4 5.00V
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Textversion des Dokuments
Data Sheet ADP2138/ADP2139 T T SW VIN 4 VOUT 1 IOUT VOUT 1 2 3 CH1 100mV CH2 250mA Ω M 40.0µs A CH2 275mA CH1 20.0mV M 40.0µs A CH3 4.50V
018 021
CH4 5.00V CH3 1.00V T 26.00%
09496-
T –84.0000µs
09496- Figure 21. Response to Load Transient, 150 mA to 500 mA, Figure 24. Response to Line Transient, VOUT = 0.8 V, VOUT = 3.3 V, PWM Mode VIN = 4.0 V to 4.8 V, PWM Mode
T T SW VIN 4 VOUT 1 IOUT VOUT 1 2 3 CH1 100mV CH2 100mA Ω M 40.0µs A CH2 114mA CH1 20.0mV M 40.0µs A CH3 4.50V
019 033
CH4 5.00V CH3 1.00V T 26.00%
09496-
T –84.0000µs
09496- Figure 22. Response to Load Transient, 50 mA to 200 mA, Figure 25. Response to Line Transient, VOUT = 1.8 V, VOUT = 3.3 V, Automatic Mode VIN = 4.0 V to 4.8 V, PWM Mode
T T SW VIN 4 IIN 2 VOUT VOUT 1 1 EN 3 1 3 CH1 20.0mV M 40.0µs A CH3 4.50V
020
CH1 2.00V Ω CH2 500mA Ω M 40.0µs A CH3 2.50V
022
CH3 1.00V CH3 5.00V CH4 5.00V T –84.0000µs
09496-
T 10.40%
09496- Figure 23. Response to Line Transient, VOUT = 3.3 V, VIN = 4.0 V to 4.8 V, Figure 26. Startup, VOUT = 1.8 V, IOUT = 10 mA PWM Mode Rev. C | Page 9 of 20 Document Outline Features Applications General Description Typical Applications Circuit Revision History Table of Contents 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 Control Scheme PWM Mode Power Save Mode Power Save Mode Current Threshold Enable/Shutdown Short-Circuit Protection Undervoltage Lockout Thermal Protection Soft Start Current Limit 100% Duty Operation Discharge Switch Applications Information ADIsimPower Design Tool External Component Selection Inductor Thermal Considerations PCB Layout Guidelines Evaluation Board Evaluation Board Layout Outline Dimensions Ordering Guide
018 021
CH4 5.00V CH3 1.00V T 26.00%
09496-
T –84.0000µs
09496- Figure 21. Response to Load Transient, 150 mA to 500 mA, Figure 24. Response to Line Transient, VOUT = 0.8 V, VOUT = 3.3 V, PWM Mode VIN = 4.0 V to 4.8 V, PWM Mode
T T SW VIN 4 VOUT 1 IOUT VOUT 1 2 3 CH1 100mV CH2 100mA Ω M 40.0µs A CH2 114mA CH1 20.0mV M 40.0µs A CH3 4.50V
019 033
CH4 5.00V CH3 1.00V T 26.00%
09496-
T –84.0000µs
09496- Figure 22. Response to Load Transient, 50 mA to 200 mA, Figure 25. Response to Line Transient, VOUT = 1.8 V, VOUT = 3.3 V, Automatic Mode VIN = 4.0 V to 4.8 V, PWM Mode
T T SW VIN 4 IIN 2 VOUT VOUT 1 1 EN 3 1 3 CH1 20.0mV M 40.0µs A CH3 4.50V
020
CH1 2.00V Ω CH2 500mA Ω M 40.0µs A CH3 2.50V
022
CH3 1.00V CH3 5.00V CH4 5.00V T –84.0000µs
09496-
T 10.40%
09496- Figure 23. Response to Line Transient, VOUT = 3.3 V, VIN = 4.0 V to 4.8 V, Figure 26. Startup, VOUT = 1.8 V, IOUT = 10 mA PWM Mode Rev. C | Page 9 of 20 Document Outline Features Applications General Description Typical Applications Circuit Revision History Table of Contents 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 Control Scheme PWM Mode Power Save Mode Power Save Mode Current Threshold Enable/Shutdown Short-Circuit Protection Undervoltage Lockout Thermal Protection Soft Start Current Limit 100% Duty Operation Discharge Switch Applications Information ADIsimPower Design Tool External Component Selection Inductor Thermal Considerations PCB Layout Guidelines Evaluation Board Evaluation Board Layout Outline Dimensions Ordering Guide