Datasheet ADP2300, ADP2301 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator |
| Seiten / Seite | 28 / 9 — Data Sheet. ADP2300/ADP2301. 700. 3.0. RISING. 2.9. FALLING. 660. 2.8. A) … |
| Revision | C |
| Dateiformat / Größe | PDF / 616 Kb |
| Dokumentensprache | Englisch |
Data Sheet. ADP2300/ADP2301. 700. 3.0. RISING. 2.9. FALLING. 660. 2.8. A) µ. 2.7. D (. 620. 2.6. HO S. CURRE. 2.5. HRE. 580. 2.4. 2.3. 540. 2.2. TJ = −40°C. TJ = +25°C
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Data Sheet ADP2300/ADP2301 700 3.0 RISING 2.9 FALLING 660 2.8 A) µ ) ( V 2.7 NT D ( 620 L 2.6 HO S CURRE 2.5 NT HRE 580 T 2.4 CE O S L E 2.3 UI UV Q 540 2.2 TJ = −40°C TJ = +25°C 2.1 TJ = +125°C 500 2.0 2 5 8 11 14 17 20
084
–50 –20 10 40 70 100 130
087
VIN (V) TEMPERATURE (°C)
08342- 08342- Figure 22. Quiescent Current vs. VIN Figure 25. UVLO Threshold vs. Temperature
900 800 VOUT 700 1 ) Ω IL 600 (m N) O 500 ( DS R SW 400 ET 4 SF 300 MO 200 2 100 VGS = 5V VGS = 4V VGS = 3V 0 B B
024
–50 –20 10 40 70 100 130 CH1 5mV W CH2 5V W M400ns A CH2 7.4V
085
CH4 500mA Ω BW TEMPERATURE (°C)
08342- 08342- Figure 23. MOSFET RDS(ON) vs. Temperature (Pin-to-Pin Measurements) Figure 26. Steady State at Heavy Load, fSW = 1.4 MHz, IOUT = 1 A
1.30 RISING FALLING 1.25 VOUT 1 ) V D ( 1.20 L HO S 1.15 IL HRE 4 T E 1.10 NABL E 1.05 SW 2 1.00 B B
025
–50 –20 10 40 70 100 130 CH1 20mV W CH2 5V W M10µs A CH2 8V
086
CH4 200mA Ω BW
08342-
TEMPERATURE (°C)
08342- Figure 24. Enable Threshold vs. Temperature Figure 27. Steady State at Light Load, fSW = 1.4 MHz, IOUT = 40 mA Rev. C | Page 9 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown Control Loop Applications Information ADIsimPower Design Tool Programming the Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Considerations Design Example Switching Frequency Selection Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide
084
–50 –20 10 40 70 100 130
087
VIN (V) TEMPERATURE (°C)
08342- 08342- Figure 22. Quiescent Current vs. VIN Figure 25. UVLO Threshold vs. Temperature
900 800 VOUT 700 1 ) Ω IL 600 (m N) O 500 ( DS R SW 400 ET 4 SF 300 MO 200 2 100 VGS = 5V VGS = 4V VGS = 3V 0 B B
024
–50 –20 10 40 70 100 130 CH1 5mV W CH2 5V W M400ns A CH2 7.4V
085
CH4 500mA Ω BW TEMPERATURE (°C)
08342- 08342- Figure 23. MOSFET RDS(ON) vs. Temperature (Pin-to-Pin Measurements) Figure 26. Steady State at Heavy Load, fSW = 1.4 MHz, IOUT = 1 A
1.30 RISING FALLING 1.25 VOUT 1 ) V D ( 1.20 L HO S 1.15 IL HRE 4 T E 1.10 NABL E 1.05 SW 2 1.00 B B
025
–50 –20 10 40 70 100 130 CH1 20mV W CH2 5V W M10µs A CH2 8V
086
CH4 200mA Ω BW
08342-
TEMPERATURE (°C)
08342- Figure 24. Enable Threshold vs. Temperature Figure 27. Steady State at Light Load, fSW = 1.4 MHz, IOUT = 40 mA Rev. C | Page 9 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown Control Loop Applications Information ADIsimPower Design Tool Programming the Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Considerations Design Example Switching Frequency Selection Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide