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LTC1649 数据表(PDF) 2 Page - Linear Technology |
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LTC1649 数据表(HTML) 2 Page - Linear Technology |
2 / 16 page 2 LTC1649 LTC1649CS LTC1649IS SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS VIN Minimum Supply Voltage Figure 1 (Note 3) q 2.7 2.7 V VFB Feedback Voltage Figure 1 q 1.25 1.265 1.28 1.23 1.265 1.29 V VCPOUT Charge Pump Output Voltage Figure 1 q 4.8 5 5.2 4.75 5 5.25 V IIN Supply Current (VIN)VSHDN = VCC, ILOAD = 0 q 35 3 5 mA VSHDN = 0V 10 25 10 25 µA IPVCC1, 2 Supply Current (PVCC1, 2)PVCC = 5V, VSHDN = VCC (Note 4) 1.5 1.5 mA VSHDN = 0V 0.1 0.1 µA fCP Internal Charge Pump Frequency ICPOUT = 20mA (Note 5) 700 700 kHz fOSC Internal PWM Oscillator Frequency q 140 200 260 130 200 325 kHz VIH SHDN Input High Voltage q 2.4 2.4 V VIL SHDN Input Low Voltage q 0.8 0.8 V IIN SHDN Input Current q ±0.01 ±1 ±0.01 ±1 µA gmV Error Amplifier Transconductance 650 650 µMho gmI ILIM Amplifier Transconductance (Note 6) 1300 1300 µMho IIMAX IMAX Sink Current VIMAX = VCC q 8 12 16 8 12 17 µA ISS Soft Start Source Current VSS = 0V q –8 –12 –16 –8 –12 –17 µA tr, tf Driver Rise/Fall Time PVCC1 = PVCC2 = 5V (Note 7) 80 250 80 250 ns tNOV Driver Non-Overlap Time PVCC1 = PVCC2 = 5V 25 130 250 25 130 250 ns DCMAX Maximum Duty Cycle VCOMP = VCC 90.5 93 90.5 93 % Supply Voltage VIN ........................................................................................... 6V VCC........................................................................................... 9V PVCC1, 2 ................................................................................ 13V Input Voltage IFB ....................................................................... – 0.3V to 18V C+, C – ................................................ – 0.3V to (VIN + 0.3V) All Other Inputs ....................... – 0.3V to (VCC + 0.3V) Operating Temperature Range LTC1649C ............................................... 0 °C to 70°C LTC1649I ............................................ – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ABSOLUTE MAXIMUM RATINGS TJMAX = 150°C, θJA = 110°C/ W ORDER PART NUMBER LTC1649CS LTC1649IS TOP VIEW S PACKAGE 16-LEAD PLASTIC SO 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 G1 PVCC1 GND FB SHDN SS VIN C– G2 PVCC2 VCC IFB IMAX COMP CPOUT C+ PACKAGE/ORDER INFORMATION ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.3V (Note 2) (Note 1) Consult factory for parts specified with wider operating temperature ranges. |
类似零件编号 - LTC1649 |
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类似说明 - LTC1649 |
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