Analog Devices ADP1148-3.3 manuals

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Analog Devices ADP1148-3.3 Manual

16 pages155.17 Kb

a
- IN
- ADP1148, ADP1148-3.3, ADP1148-5
  - Figure 1. High Efficiency Step-Down Converter Figure 2. ADP1148-5 Typical Efficiency
    - ADP1148
- High Efficiency Synchronous Step-Down Switching Regulators
  - FUNCTIONAL BLOCK DIAGRAM
    - ADP1148
  - = 10 V. In shutdown, both MOSFETs are turned off.
    - TYPICAL APPLICATIONS
- 2ADP1148, ADP1148-3.3, ADP1148-5SPECIFICATIONS
  - (08C TA +708C,1 VIN = 10 V, VSHUTDOWN = 0 V, unless otherwise noted. See Figure 17.)
  - ELECTRICAL CHARACTERISTICS
  - 3ADP1148, ADP1148-3.3, ADP1148-5 ELECTRICAL CHARACTERISTICS
    - (408C TA +858C,1 VIN = 10 V, VSHUTDOWN = 0 V, unless otherwise noted. See Figure 17.)
  - 4ADP1148, ADP1148-3.3, ADP1148-5
    - WARNING!
  - 5Typical Performance CharacteristicsADP1148, ADP1148-3.3, ADP1148-5
    - 5
      - Figure 3. Selecting R
      - Figure 10. DC Supply Current
      - Figure 11. Supply Current in Shutdown
        IN
        SENSE
      - vs. Maxi- mum Output Current
      - Figure 6. Typical Efficiency Losses
      - Figure 9. Load Regulation
      - Figure 5. Selecting Minimum Output Capacitor vs. (V
      - V
      - ) and Inductor
      - Figure 8. ADP1148-5 Output Voltage Change vs. Input Voltage
      - Figure 4. Operating Frequency vs. Timing Capacitor Value
      - Figure 7. Efficiency vs. Input Voltage
      - Figure 12. Operating Frequency vs. (V
        IN
      - V
      - )
      - Figure 15. Current Sense Threshold Voltage
      - Figure 13. Gate Charge Supply Current
      - Figure 14. Off Time vs. V
  - 6ADP1148, ADP1148-3.3, ADP1148-5Typical Performance Characteristics
  - 11ADP1148, ADP1148-3.3, ADP1148-5
    - ADP1148-3.3
    - 12Figure 19. ADP1148 Low Dropout, 3.3 V/1 A High Efficiency Regulator
      - ADP1148
    - Figure 20. 4 V to 9 V Input Voltage to 5 V/1.4 A Regulator
    - 1313
      - ADP1148
      - Figure 21. Logic Selectable 5 V/1 A or 3.3 V/2 A High Efficiency Regulator
  - 14ADP1148, ADP1148-3.3, ADP1148-5
    - OUTLINE DIMENSIONS
      - Dimensions shown in inches and (mm).
    - 14-Lead Plastic DIP (N-14)
    - 14-Lead Plastic SO (SO-14)

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