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LTC2913 датащи(PDF) 8 Page - Linear Technology |
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LTC2913 датащи(HTML) 8 Page - Linear Technology |
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8 / 20 page ![]() LTC2995 8 2995f resistor between VPTAT and the load to ensure stability. VPTAT is pulled low when the supply voltage goes below the under voltage lockout threshold. VREF: Voltage Reference Output. VREF provides a 1.8V reference voltage. VREF can drive up to ±200μA of load current and up to 1000pF of capacitive load. For larger load capacitances insert 1kΩ between VREF and the load to ensure stability. Leave VREF open if unused. VT1: Temperature Threshold 1. When VPTAT crosses the voltage on VT1 with a polarity set by the PS pin, TO1 is pulled low. Tie VT1 to GND if unused. VT2: Temperature Threshold 2. When VPTAT crosses the voltage on VT2 with a polarity set by the PS pin, TO2 is pulled low. Tie VT2 to VCC if unused. PIN FUNCTIONS BLOCK DIAGRAM 2995 BD VH1 CH1 CH2 CL2 CT2 CT1 CL1 UVLO 2V VCC VL1 VH2 VL2 VT2 VREF VT1 VPTAT 20 1 2 3 – + – + 1.3MΩ 500k 0.5V 200k 200kΩ 1.2V 1.8V 400k UVLO 11 4 5 8 18 7 D– D+ DS PS GND 6 19 T TO V CONVERTER TO1/TO2 PULSE GENERATOR UV PULSE GENERATOR OSCILLATOR UV VCC 400k TMR OV VCC 400k TO2 VCC 400k TO1 VCC 400k OV PULSE GENERATOR 3 STATE DECODE 17 3 STATE DECODE 12 13 14 15 16 VCC 9 1 |
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