Datasheet ADP5071 (Analog Devices) - 8

制造商Analog Devices
描述2 A/1.2 A DC-to-DC Switching Regulator with Independent Positive and Negative Outputs
页数 / 页27 / 8 — ADP5071. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 1200. 1000. VIN …
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ADP5071. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 1200. 1000. VIN = 3.3V, L = 3.3µH. VIN = 3.3V, L = 4.7µH

ADP5071 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 1200 1000 VIN = 3.3V, L = 3.3µH VIN = 3.3V, L = 4.7µH

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ADP5071 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
Typical performance characteristics are generated using the standard bill of materials for each input/output combination listed in Table 9, Table 10, and Table 11.
1200 1000 VIN = 3.3V, L = 3.3µH VIN = 3.3V, L = 4.7µH VIN = 3.3V, L = 4.7µH VIN = 5V, L = 6.8µH V V 1000 IN = 5V, L = 3.3µH IN = 5V, L = 10µH VIN = 5V, L = 4.7µH 800 VIN = 12V, L = 6.8µH VIN = 12V, L = 10µH VIN = 12V, L = 15µH VIN = 15V, L = 10µH VIN = 15V, L = 10µH 800 V ) ) IN = 3.3V, L = 6.8µH A A VIN = 15V, L = 22µH m 600 m ( ) ( ) X X A 600 A (M (M T T 400 I OU I OU 400 200 200 0 0 0 10 20 30 40 50
03 -0
–40 –30 –20 –10 0
-006
V
069 069
POS (V) V
12
NEG (V)
12 Figure 4. Boost Regulator Maximum Output Current, fSW = 1.2 MHz, Figure 7. Inverting Regulator Maximum Output Current, fSW = 1.2 MHz, TA = 25°C, Based on Target of 70% ILIM (BOOST) TA = 25°C, Based on Target of 70% ILIM (INVERTER)
1000 700 VIN = 3.3V, L = 3.3µH VIN = 3.3V, L = 2.2µH VIN = 3.3V, L = 4.7µH VIN = 5V, L = 3.3µH V 600 IN = 5V, L = 2.2µH VIN = 5V, L = 4.7µH 800 VIN = 5V, L = 4.7µH VIN = 12V, L = 6.8µH VIN = 12V, L = 4.7µH 500 VIN = 15V, L = 10µH V V ) IN = 15V, L = 6.8µH ) IN = 12V, L = 3.3µH A 600 A VIN = 15V, L = 4.7µH m m ( 400 ) ( ) X X A A (M (M T T 300 400 I OU I OU 200 200 100 0 0 0 10 20 30 40 50
04 -0
–40 –30 –20 –10 0
-007
V
069 069
POS (V) V
12
NEG (V)
12 Figure 5. Boost Regulator Maximum Output Current, fSW = 2.4 MHz, Figure 8. Inverting Regulator Maximum Output Current, fSW = 2.4 MHz, TA = 25°C, Based on Target of 70% ILIM (BOOST) TA = 25°C, Based on Target of 70% ILIM (INVERTER)
100 100 80 80 (%) 60 (%) 60 NCY NCY E E ICI ICI F 40 F F 40 F E E 20 20 VIN = 3.3V, 1.2MHz VIN = 3.3V, 1.2MHz VIN = 3.3V, 2.4MHz VIN = 3.3V, 2.4MHz 0
5
0
8
0.001 0.01 0.1 1
00
0.001 0.01 0.1 1
00 9- 9-
LOAD (A)
06 06 12
LOAD (A)
12 Figure 6. Boost Regulator Efficiency vs. Current Load, VIN = 3.3 V, Figure 9. Inverting Regulator Efficiency vs. Current Load, VIN = 3.3 V, VPOS = 5 V, TA = 25°C VNEG = −5 V, TA = 25°C Rev. E | Page 8 of 27 Document Outline Features Applications Typical Application Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation PWM Mode PSM Mode Undervoltage Lockout (UVLO) Oscillator and Synchronization Internal Regulators Precision Enabling Soft Start Slew Rate Control Current-Limit Protection Overvoltage Protection Thermal Shutdown Start-Up Sequence Applications Information ADIsimPower Design Tool Component Selection Feedback Resistors Output Capacitors Input Capacitor VREG Capacitor VREF Capacitor Soft Start Resistor Diodes Inductor Selection for the Boost Regulator Inductor Selection for the Inverting Regulator Loop Compensation Boost Regulator Inverting Regulator Common Applications Super Low Noise With Optional LDOs SEPIC Step-Up/Step-Down Operation Layout Considerations Outline Dimensions Ordering Guide