Datasheet LTC3895 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 150V Low IQ, Synchronous Step-Down DC/DC Controller |
| 页数 / 页 | 38 / 8 — Typical perForMance characTerisTics. Shutdown Current. DRVCC Line … |
| 文件格式/大小 | PDF / 2.3 Mb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. Shutdown Current. DRVCC Line Regulation. Shutdown Current vs Temperature. vs Input Voltage
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LTC3895
Typical perForMance characTerisTics Shutdown Current DRVCC Line Regulation Shutdown Current vs Temperature vs Input Voltage
11 20 30 EXTVCC = 0V VIN = 12V DRVSET = INTV 18 CC 10 25 16 14 9 20 12 TAGE (V) NDRV FET 8 10 15 VOL No NDRV FET CC 8 7 DRV 10 6 DRVSET = 0V SHUTDOWN CURRENT (µA) 4 SHUTDOWN CURRENT (µA) VIN = 6.3V 6 5 2 5 0 0 0 15 30 45 60 75 90 105 120 135 150 –75 –50 –25 0 25 50 75 100 125 150 0 15 30 45 60 75 90 105 120 135 150 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3895 G19 3895 G20 3895 G21
Oscillator Frequency SS Pull-Up Current Quiescent Current vs Temperature vs Temperature vs Temperature
100 600 12.0 VIN = 12V 90 BURST MODE OPERATION 11.5 550 80 FREQ = INTVCC 11.0 70 DRVSET = 70kΩ 500 60 10.5 DRVSET = INTVCC 50 450 10.0 40 9.5 DRVSET = 0V FREQUENCY (kHz) 400 30 SS CURRENT (µA) QUIESCENT CURRENT (µA) 9.0 20 350 10 FREQ = 0V 8.5 0 300 8.0 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3895 G22 3895 G23 3895 G24
Boost Charge Pump Voltage BOOST Charge Pump Charging BOOST Charge Pump Charging vs SW Voltage Current vs Frequency Current vs SW Voltage
10 100 100 VBOOST = 16V FREQ = 350kHz 9 90 VSW = 12V 90 8 80 80 7 70 70 TAGE (V) 6 60 60 5 50 50 4 40 40 VBOOST - VSW = 4V 3 150°C 30 30 25°C V (BOOST - SW) VOL BOOST - VSW = 7V 2 –55°C 20 150°C 20 150°C FREQ = 350kHz 1 25°C 10 25°C 10 10MΩ BETWEEN BOOST AND SW CHARGE PUMP CHARGING CURRENT (µA) –55°C CHARGE PUMP CHARGING CURRENT (µA) –55°C 0 0 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 0 100 200 300 400 500 600 700 800 900 1000 0 5 10 15 20 25 30 35 40 45 50 55 60 65 SW VOLTAGE (V) OPERATING FREQUENCY (kHz) SW VOLTAGE (V) 3895 G25 3895 G26 3895 G27 3895fa 8 For more information www.linear.com/LTC3895 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics Shutdown Current DRVCC Line Regulation Shutdown Current vs Temperature vs Input Voltage
11 20 30 EXTVCC = 0V VIN = 12V DRVSET = INTV 18 CC 10 25 16 14 9 20 12 TAGE (V) NDRV FET 8 10 15 VOL No NDRV FET CC 8 7 DRV 10 6 DRVSET = 0V SHUTDOWN CURRENT (µA) 4 SHUTDOWN CURRENT (µA) VIN = 6.3V 6 5 2 5 0 0 0 15 30 45 60 75 90 105 120 135 150 –75 –50 –25 0 25 50 75 100 125 150 0 15 30 45 60 75 90 105 120 135 150 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3895 G19 3895 G20 3895 G21
Oscillator Frequency SS Pull-Up Current Quiescent Current vs Temperature vs Temperature vs Temperature
100 600 12.0 VIN = 12V 90 BURST MODE OPERATION 11.5 550 80 FREQ = INTVCC 11.0 70 DRVSET = 70kΩ 500 60 10.5 DRVSET = INTVCC 50 450 10.0 40 9.5 DRVSET = 0V FREQUENCY (kHz) 400 30 SS CURRENT (µA) QUIESCENT CURRENT (µA) 9.0 20 350 10 FREQ = 0V 8.5 0 300 8.0 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3895 G22 3895 G23 3895 G24
Boost Charge Pump Voltage BOOST Charge Pump Charging BOOST Charge Pump Charging vs SW Voltage Current vs Frequency Current vs SW Voltage
10 100 100 VBOOST = 16V FREQ = 350kHz 9 90 VSW = 12V 90 8 80 80 7 70 70 TAGE (V) 6 60 60 5 50 50 4 40 40 VBOOST - VSW = 4V 3 150°C 30 30 25°C V (BOOST - SW) VOL BOOST - VSW = 7V 2 –55°C 20 150°C 20 150°C FREQ = 350kHz 1 25°C 10 25°C 10 10MΩ BETWEEN BOOST AND SW CHARGE PUMP CHARGING CURRENT (µA) –55°C CHARGE PUMP CHARGING CURRENT (µA) –55°C 0 0 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 0 100 200 300 400 500 600 700 800 900 1000 0 5 10 15 20 25 30 35 40 45 50 55 60 65 SW VOLTAGE (V) OPERATING FREQUENCY (kHz) SW VOLTAGE (V) 3895 G25 3895 G26 3895 G27 3895fa 8 For more information www.linear.com/LTC3895 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts