Datasheet ADP3050 (Analog Devices) - 6

ADP3050 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 5.0 2.0 VIN = 10V, NO LOAD VIN = 10V 4.5 1.8 mA) ( 4.0 A) INTO BIAS PIN 1.6 NT ( NT 3.5 1.4 CURRE 3.0 1.2 CURRE ING 2.5 UT P 1.0 RAT E UT P 2.0 O 0.8 O E 1.5 NT 0.6 RAG CE E S 1.0 0.4 E AV UI Q 0.5 INTO IN PIN 0.2
006
0
003
0 –45 –35 –25 –15 –5 5 15 25 35 45 55 65 75 85 –45 –35 –25 –15 –5 5 15 25 35 45 55 65 75 85
00125-
TEMPERATURE (°C)
00125-
TEMPERATURE (°C)
Figure 3. Quiescent Operating Current vs. Temperature Figure 6. Average Output Current Limit vs. Temperature
25 25 V A) IN = 10V µ ( 20 20 NT mA) CURRE 15 ( 15 NT NT CE S E UI 10 CURRE T 10 S N Q O W BO DO 5 5 HUT S 0 0
004
0 5 10 15 20 25 30
007
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 SUPPLY VOLTAGE (V)
00125-
LOAD CURRENT (A)
00125- Figure 4. Shutdown Quiescent Current vs. Supply Voltage Figure 7. Boost Current vs. Load Current
10 100 VIN = 6V BIAS TIED TO VOUT 90 mA) ( 8 80 NT 70 V V CURRE %) IN = 12V IN = 24V 6 ( 60 V V ING VOUT = 5V IN = 18V IN = 30V NCY 50 E RAT E ICI P 4 F 40 F O E NT V 30 OUT = 3.3V CE S 2 L = 33µH E 20 UI CIN = 22µF Q 10 COUT = 100µF 0 0
005
0 5 10 15 20 25 30 0 200 400 600 800 k 1
008
SUPPLY VOLTAGE (V)
00125-
OUTPUT CURRENT (mA)
00125- Figure 5. Quiescent Operating Current vs. Supply Voltage Figure 8. 5 V Output Efficiency Rev. C | Page 6 of 20 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting the Output Voltage Applications Information ADIsimPower Design Tool Inductor Selection Continuous Mode Discontinuous Mode Inductor Core Types and Materials Choosing an Inductor Output Capacitor Selection Choosing an Output Capacitor Catch Diode Selection Choosing a Catch Diode Input Capacitor Selection Discontinous Mode Ringing Setting the Output Voltage Frequency Compensation Current Limit/Frequency Foldback Bias Pin Connection Boosted Drive Stage Start-Up/Minimum Input Voltage Thermal Considerations Board Layout Guidelines Typical Applications 5 V to 3.3 V Buck (Step-Down) Regulator Inverting (Buck Boost) Regulator Dual Output SEPIC Regulator Outline Dimensions Ordering Guide