Datasheet LTC3867 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | Synchronous Step-Down DC/DC Controller with Differential Remote Sense and Nonlinear Control |
| Seiten / Seite | 36 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Load Step-Up (0A to 15A, 15A/µs). … |
| Dateiformat / Größe | PDF / 394 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Load Step-Up (0A to 15A, 15A/µs). (Nonlinear Operation). (Normal Operation)
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LTC3867
TYPICAL PERFORMANCE CHARACTERISTICS Load Step-Up (0A to 15A, 15A/µs) Load Step-Up (0A to 15A, 15A/µs) (Nonlinear Operation) (Normal Operation) Overcurrent Recovery
VOUT V 50mV/DIV 97.5mV OUT V 50mV/DIV 137.5mV OUT 500mV/DIV SW SW IOUT 5V/DIV 5V/DIV 10A/DIV 5µs/DIV 3867 G01 5µs/DIV 3867 G02 200µs/DIV 3867 G03
Efficiency and Output Current and Mode Quiescent Current vs Temperature Pre-Bias Start-Up
100 4.0 4.5 Burst Mode OPERATION 90 DCM 3.5 CCM VOUT 80 200mV/DIV 3.0 4.0 70 POWER LOSS (W) 60 2.5 50 2.0 3.5 TRACK/SS 40 1.5 500mV/DIV EFFICIENCY (%) 30 1.0 3.0 QUIESCENT CURRENT (mA) 20 10ms/DIV 3867 G05 10 0.5 VIN = 12V V 0 OUT = 1.5V 0 2.5 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 LOAD CURRENT (A) TEMPERATURE (°C) 3867 G21 3867 G04
Quiescent Current vs Input Coincident Tracking Master Supply Voltage without EXTVCC INTVCC Line Regulation
3.50 5.5 5.0 MASTER 3.25 SUPPLY 4.5 500mV/DIV 4.0 VOUT 3.00 500mV/DIV VOLTAGE (V) 3.5 CC SUPPLY CURRENT (mA) 2.75 INTV 3.0 10ms/DIV 3867 G06 2.5 2.50 2.0 4 8 12 16 20 24 28 32 36 40 0 5 10 15 20 25 30 35 40 45 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3867 G07 3867 G08 3867f 6 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Load Step-Up (0A to 15A, 15A/µs) Load Step-Up (0A to 15A, 15A/µs) (Nonlinear Operation) (Normal Operation) Overcurrent Recovery
VOUT V 50mV/DIV 97.5mV OUT V 50mV/DIV 137.5mV OUT 500mV/DIV SW SW IOUT 5V/DIV 5V/DIV 10A/DIV 5µs/DIV 3867 G01 5µs/DIV 3867 G02 200µs/DIV 3867 G03
Efficiency and Output Current and Mode Quiescent Current vs Temperature Pre-Bias Start-Up
100 4.0 4.5 Burst Mode OPERATION 90 DCM 3.5 CCM VOUT 80 200mV/DIV 3.0 4.0 70 POWER LOSS (W) 60 2.5 50 2.0 3.5 TRACK/SS 40 1.5 500mV/DIV EFFICIENCY (%) 30 1.0 3.0 QUIESCENT CURRENT (mA) 20 10ms/DIV 3867 G05 10 0.5 VIN = 12V V 0 OUT = 1.5V 0 2.5 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 LOAD CURRENT (A) TEMPERATURE (°C) 3867 G21 3867 G04
Quiescent Current vs Input Coincident Tracking Master Supply Voltage without EXTVCC INTVCC Line Regulation
3.50 5.5 5.0 MASTER 3.25 SUPPLY 4.5 500mV/DIV 4.0 VOUT 3.00 500mV/DIV VOLTAGE (V) 3.5 CC SUPPLY CURRENT (mA) 2.75 INTV 3.0 10ms/DIV 3867 G06 2.5 2.50 2.0 4 8 12 16 20 24 28 32 36 40 0 5 10 15 20 25 30 35 40 45 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3867 G07 3867 G08 3867f 6 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Package Description Typical Application Related Parts