Datasheet LTC3815 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management |
| 页数 / 页 | 42 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. Valley Current Limit. Current Sense … |
| 修订版 | B |
| 文件格式/大小 | PDF / 3.0 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Valley Current Limit. Current Sense Threshold. Valley Current Limit vs. vs Input Voltage
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LTC3815
TYPICAL PERFORMANCE CHARACTERISTICS Valley Current Limit Current Sense Threshold Valley Current Limit vs vs Input Voltage vs ITH Voltage Temperature
6.4 8 7.0 6.3 6 6.2 4 6.5 6.1 2 6.0 0 6.0 5.9 –2 CURRENT LIMIT (A) CURRENT LIMIT (A) CURRENT LIMIT (A) 5.8 –4 5.5 5.7 –6 5.6 –8 5.0 2 3 4 5 6 0 0.2 0.4 0.6 0.8 1.0 1.2 –50 0 50 100 150 INPUT VOLTAGE (V) ITH VOLTAGE (V) TEMPERATURE (°C) 3815 G10 3815 G11 3815 G12
Oscillator Frequency Oscillator Frequency vs Input Quiescent Current vs Input vs Temperature Voltage Voltage
3 4 10 3 2 8 2 1 TION (%) TION (%) 1 6 ARIA 0 ARIA 0 Y CURRENT (mA) –1 4 –1 SUPPL FREQUENCY V –2 FREQUENCY V –2 2 –50°C –3 25°C 125°C –3 –4 0 –50 0 50 100 150 2 3 4 5 6 2 3 4 5 6 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3815 G13 3815 G14 3815 G15
Shutdown Current vs Input Voltage Standby Current vs Input Voltage Oscillator Frequency vs RT
5 200 3 –50°C 25°C 4 125°C 150 3 1 100 2 ANDBY CURRENT (µA) FREQUENCY (MHz) SHUTDOWN CURRENT (µA) ST 50 1 –50°C 25°C 125°C 0 0 0.2 2 3 4 5 6 2 3 4 5 6 0 20 40 60 80 100 INPUT VOLTAGE (V) INPUT VOLTAGE (V) RT (kΩ) 3815 G16 3815 G17 3815 G18 Rev B For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information PMBus Command Details Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Valley Current Limit Current Sense Threshold Valley Current Limit vs vs Input Voltage vs ITH Voltage Temperature
6.4 8 7.0 6.3 6 6.2 4 6.5 6.1 2 6.0 0 6.0 5.9 –2 CURRENT LIMIT (A) CURRENT LIMIT (A) CURRENT LIMIT (A) 5.8 –4 5.5 5.7 –6 5.6 –8 5.0 2 3 4 5 6 0 0.2 0.4 0.6 0.8 1.0 1.2 –50 0 50 100 150 INPUT VOLTAGE (V) ITH VOLTAGE (V) TEMPERATURE (°C) 3815 G10 3815 G11 3815 G12
Oscillator Frequency Oscillator Frequency vs Input Quiescent Current vs Input vs Temperature Voltage Voltage
3 4 10 3 2 8 2 1 TION (%) TION (%) 1 6 ARIA 0 ARIA 0 Y CURRENT (mA) –1 4 –1 SUPPL FREQUENCY V –2 FREQUENCY V –2 2 –50°C –3 25°C 125°C –3 –4 0 –50 0 50 100 150 2 3 4 5 6 2 3 4 5 6 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3815 G13 3815 G14 3815 G15
Shutdown Current vs Input Voltage Standby Current vs Input Voltage Oscillator Frequency vs RT
5 200 3 –50°C 25°C 4 125°C 150 3 1 100 2 ANDBY CURRENT (µA) FREQUENCY (MHz) SHUTDOWN CURRENT (µA) ST 50 1 –50°C 25°C 125°C 0 0 0.2 2 3 4 5 6 2 3 4 5 6 0 20 40 60 80 100 INPUT VOLTAGE (V) INPUT VOLTAGE (V) RT (kΩ) 3815 G16 3815 G17 3815 G18 Rev B For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information PMBus Command Details Typical Applications Package Description Revision History Typical Application Related Parts