Datasheet ADP3051 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 500 mA PWM Step-Down DC-DC with Synchronous Rectifier |
| 页数 / 页 | 16 / 6 — ADP3051. TYPICAL PERFORMANCE CHARACTERISTICS. 100. 0.5. 0.4. VIN = 3.6V. … |
| 文件格式/大小 | PDF / 441 Kb |
| 文件语言 | 英语 |
ADP3051. TYPICAL PERFORMANCE CHARACTERISTICS. 100. 0.5. 0.4. VIN = 3.6V. 0.3. VIN = 5.5V. 0.2. VOUT = 2.5V. (%). 0.1. NCY. VOUT = 3.3V. L = 22
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ADP3051 TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, VOUT = 3.3V, circuit of Figure 20, component values of Table 4, TA = 25°C, unless otherwise specified.
100 0.5 0.4 90 VIN = 3.6V 0.3 VIN = 5.5V 0.2 VOUT = 2.5V 80 (%) VIN = 3.6V (%) 0.1 NCY 70 VOUT = 3.3V 0 L = 22
µ
H FFICIE –0.1 UT ACCURACY E 60 –0.2 OUTP –0.3 50 –0.4 40 –0.5 1 10 100 1000 0 100 200 300 400 500 I I LOAD (mA)
04768-0-002
LOAD (mA)
04768-0-005 Figure 3. Output Efficiency vs. Load Current, VOUT = 3.3 V Figure 6. Output Voltage Error vs. Load Current
100 600 90 VIN = 2.7V 580 VIN = 2.7V 80 560 Hz) (%) (k VIN = 5.5V NCY 70 VIN = 3.6V VOUT = 2.5V NCY 540 VIN = 3.6V L = 22
µ
H UE C Q FFICIE OUT = 22
µ
F E 60 520 FRE VIN = 5.5V VOUT = 1.2V ILOAD = 500mA 50 500 40 480 1 10 100 1000 –40 –15 10 35 60 85 I TEMPERATURE (°C) LOAD (mA)
04768-0-003 04768-0-006 Figure 4. Output Efficiency vs. Load Current, VOUT = 2.5 V Figure 7. Oscillator Frequency vs. Temperature
100 600 550 90 VIN = 3.6V 500 Hz) (k 450 80 VIN = 2.5V 400 NCY (%) UE 350 Q NCY 70 VIN = 5.5V VOUT = 1.2V 300 L = 10
µ
H C 250 FFICIE OUT = 22
µ
F E 60 200 CILLATOR FRE 150 50 OS 100 50 40 0 1 10 100 1000 0 100 200 300 400 500 ILOAD (mA)
04768-0-004
ILOAD (mA)
04768-0-007 Figure 5. Output Efficiency vs. Load Current, VOUT = 1.2 V Figure 8. Oscillator Frequency vs. Load Current, VIN = 3.6 V, VOUT = 1.2 V Rev. 0 | Page 6 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIP TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PWM CONTROL MODE TRI-MODE OPERATION 100% DUTY CYCLE OPERATION SHUTDOWN UNDERVOLTAGE LOCKOUT (UVLO) SHORT-CIRCUIT PROTECTION AND RECOVERY APPLICATIONS RECOMMENDED COMPONENTS DESIGN PROCEDURE Setting the Output Voltage Inductor Selection OUTPUT CAPACITOR SELECTION Input Capacitor Selection Compensation Design CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
ADP3051 TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, VOUT = 3.3V, circuit of Figure 20, component values of Table 4, TA = 25°C, unless otherwise specified.
100 0.5 0.4 90 VIN = 3.6V 0.3 VIN = 5.5V 0.2 VOUT = 2.5V 80 (%) VIN = 3.6V (%) 0.1 NCY 70 VOUT = 3.3V 0 L = 22
µ
H FFICIE –0.1 UT ACCURACY E 60 –0.2 OUTP –0.3 50 –0.4 40 –0.5 1 10 100 1000 0 100 200 300 400 500 I I LOAD (mA)
04768-0-002
LOAD (mA)
04768-0-005 Figure 3. Output Efficiency vs. Load Current, VOUT = 3.3 V Figure 6. Output Voltage Error vs. Load Current
100 600 90 VIN = 2.7V 580 VIN = 2.7V 80 560 Hz) (%) (k VIN = 5.5V NCY 70 VIN = 3.6V VOUT = 2.5V NCY 540 VIN = 3.6V L = 22
µ
H UE C Q FFICIE OUT = 22
µ
F E 60 520 FRE VIN = 5.5V VOUT = 1.2V ILOAD = 500mA 50 500 40 480 1 10 100 1000 –40 –15 10 35 60 85 I TEMPERATURE (°C) LOAD (mA)
04768-0-003 04768-0-006 Figure 4. Output Efficiency vs. Load Current, VOUT = 2.5 V Figure 7. Oscillator Frequency vs. Temperature
100 600 550 90 VIN = 3.6V 500 Hz) (k 450 80 VIN = 2.5V 400 NCY (%) UE 350 Q NCY 70 VIN = 5.5V VOUT = 1.2V 300 L = 10
µ
H C 250 FFICIE OUT = 22
µ
F E 60 200 CILLATOR FRE 150 50 OS 100 50 40 0 1 10 100 1000 0 100 200 300 400 500 ILOAD (mA)
04768-0-004
ILOAD (mA)
04768-0-007 Figure 5. Output Efficiency vs. Load Current, VOUT = 1.2 V Figure 8. Oscillator Frequency vs. Load Current, VIN = 3.6 V, VOUT = 1.2 V Rev. 0 | Page 6 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIP TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PWM CONTROL MODE TRI-MODE OPERATION 100% DUTY CYCLE OPERATION SHUTDOWN UNDERVOLTAGE LOCKOUT (UVLO) SHORT-CIRCUIT PROTECTION AND RECOVERY APPLICATIONS RECOMMENDED COMPONENTS DESIGN PROCEDURE Setting the Output Voltage Inductor Selection OUTPUT CAPACITOR SELECTION Input Capacitor Selection Compensation Design CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE