Datasheet ADP2138, ADP2139 (Analog Devices) - 8
| Hersteller | Analog Devices |
| Beschreibung | Compact, 800 mA, 3 MHz, Step-Down DC-to-DC Converter with an Internal Discharge Switch |
| Seiten / Seite | 20 / 8 — ADP2138/ADP2139. Data Sheet. 350. –40°C. +25°C. 300. +125°C. 250. VOUT. … |
| Revision | C |
| Dateiformat / Größe | PDF / 551 Kb |
| Dokumentensprache | Englisch |
ADP2138/ADP2139. Data Sheet. 350. –40°C. +25°C. 300. +125°C. 250. VOUT. Ω) 200. N O DS 150. OUT. 100. CH1 100mV. CH2 250mA Ω. M 40.0µs A CH2 215mA. 2.3
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ADP2138/ADP2139 Data Sheet 350 T –40°C SW +25°C 300 +125°C 4 250 VOUT Ω) 200 (m 1 N O DS 150 I R OUT 100 50 2 0 CH1 100mV CH2 250mA Ω M 40.0µs A CH2 215mA
015
2.3 2.8 3.3 3.8 4.3 4.8 5.3
036
CH4 5.00V INPUT VOLTAGE (V) T 26.00%
09496- 09496- Figure 15. RDSON PFET vs. Input Voltage, Across Temperature Figure 18. Response to Load Transient, 50 mA to 500 mA, VOUT = 1.8 V, Automatic Mode
250 T –40°C +25°C SW +125°C 200 4 150 Ω) VOUT (m 1 N O DS I R 100 OUT 50 2 0 CH1 100mV CH2 250mA Ω M 40.0µs A CH2 215mA 2.3 2.8 3.3 3.8 4.3 4.8 5.3
037 016
CH4 5.00V INPUT VOLTAGE (V)
09496-
T 26.00%
09496- Figure 16. RDSON NFET vs. Input Voltage, Across Temperature Figure 19. Response to Load Transient, 150 mA to 500 mA, VOUT = 0.8 V, PWM Mode
T T SW SW 4 4 VOUT VOUT 1 1 IOUT IOUT 2 2 CH1 100mV CH2 250mA Ω M 40.0µs A CH2 215mA
014
CH1 100mV CH2 100mA Ω M 40.0µs A CH2 134mA
017
CH4 5.00V CH4 5.00V T 26.00%
09496-
T 26.00%
09496- Figure 17. Response to Load Transient, 150 mA to 500 mA, Figure 20. Response to Load Transient, 50 mA to 200 mA, VOUT = 0.8 V, VOUT = 1.8 V, PWM Mode Automatic Mode Rev. C | Page 8 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
015
2.3 2.8 3.3 3.8 4.3 4.8 5.3
036
CH4 5.00V INPUT VOLTAGE (V) T 26.00%
09496- 09496- Figure 15. RDSON PFET vs. Input Voltage, Across Temperature Figure 18. Response to Load Transient, 50 mA to 500 mA, VOUT = 1.8 V, Automatic Mode
250 T –40°C +25°C SW +125°C 200 4 150 Ω) VOUT (m 1 N O DS I R 100 OUT 50 2 0 CH1 100mV CH2 250mA Ω M 40.0µs A CH2 215mA 2.3 2.8 3.3 3.8 4.3 4.8 5.3
037 016
CH4 5.00V INPUT VOLTAGE (V)
09496-
T 26.00%
09496- Figure 16. RDSON NFET vs. Input Voltage, Across Temperature Figure 19. Response to Load Transient, 150 mA to 500 mA, VOUT = 0.8 V, PWM Mode
T T SW SW 4 4 VOUT VOUT 1 1 IOUT IOUT 2 2 CH1 100mV CH2 250mA Ω M 40.0µs A CH2 215mA
014
CH1 100mV CH2 100mA Ω M 40.0µs A CH2 134mA
017
CH4 5.00V CH4 5.00V T 26.00%
09496-
T 26.00%
09496- Figure 17. Response to Load Transient, 150 mA to 500 mA, Figure 20. Response to Load Transient, 50 mA to 200 mA, VOUT = 0.8 V, VOUT = 1.8 V, PWM Mode Automatic Mode Rev. C | Page 8 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