Datasheet LTC4418 (Linear Technology) - 4
| 制造商 | Linear Technology |
| 描述 | Dual Channel Prioritized PowerPath Controller |
| 页数 / 页 | 30 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.1 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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LTC4418
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, V1 = VS1 = 12V and/or V2 = VS2 = 12V, VOUT = 12V, HYS = GND, CAS = Open, G1 = G2 = Open. (Notes 1, 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS OV, UV Protection Circuitry
VTH OV/UV Comparator Threshold VOUT = 11V, OV Rising, UV Falling l 0.985 1 1.015 V VHYS(INT) OV/UV Comparator Hysteresis VOUT = 11V l 15 30 45 mV ILEAK OV/UV Leakage Current OV = 1.015V, UV = 0.985V l ±10 nA IEXT External Hysteresis Current IHYS = –400nA l 40 50 60 nA Into/Out of UV/OV Pins IHYS = –4µA l 470 500 530 nA VHYS HYS Voltage IHYS = –4µA l 480 500 520 mV
Validation Timer
ITMR TMR Pull-Up Current Timer On, VTMR ≤600mV l –1 –2 –3.5 µA TMR Pull-Down Current Timer On, VTMR >1.6V l 1 2 3.5 µA tVALID OV, UV Validation Time TMR = VINTVCC l 2 3.5 7 µs CTMR = 1nF l 9 16 32 ms tVALID(OFF) VALID Off Delay from OV/UV Fault UV or OV 10% Overdrive, l 2 3.5 7 µs Measure VALID1 or VALID2 Rising Edge VTH(TMROFF) TMR Disable Voltage Threshold Measure VINTVCC-VTMR, Rising Edge l 50 100 180 mV VTH(TMRHYS) TMR Disable Voltage Hysteresis 120 mV
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
Specification represents the diode-OR’d current of V1 or V2 input may cause permanent damage to the device. Exposure to any Absolute supplies. Current is split evenly if both supplies are equal. Maximum Rating condition for extended periods may affect device
Note 4:
UV1 or UV2 driven below VTH. Time is measured from respective reliability and lifetime. rising edge G1 crossing VS1 – 3V or G2 crossing VS2 – 3V to next valid
Note 2:
All currents into pins are positive; all voltages are referenced to priority falling edge G1 crossing VS1 – 3V or G2 crossing VS2 – 3V. GND unless otherwise specified. 4418f 4 For more information www.linear.com/LTC4418 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, V1 = VS1 = 12V and/or V2 = VS2 = 12V, VOUT = 12V, HYS = GND, CAS = Open, G1 = G2 = Open. (Notes 1, 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS OV, UV Protection Circuitry
VTH OV/UV Comparator Threshold VOUT = 11V, OV Rising, UV Falling l 0.985 1 1.015 V VHYS(INT) OV/UV Comparator Hysteresis VOUT = 11V l 15 30 45 mV ILEAK OV/UV Leakage Current OV = 1.015V, UV = 0.985V l ±10 nA IEXT External Hysteresis Current IHYS = –400nA l 40 50 60 nA Into/Out of UV/OV Pins IHYS = –4µA l 470 500 530 nA VHYS HYS Voltage IHYS = –4µA l 480 500 520 mV
Validation Timer
ITMR TMR Pull-Up Current Timer On, VTMR ≤600mV l –1 –2 –3.5 µA TMR Pull-Down Current Timer On, VTMR >1.6V l 1 2 3.5 µA tVALID OV, UV Validation Time TMR = VINTVCC l 2 3.5 7 µs CTMR = 1nF l 9 16 32 ms tVALID(OFF) VALID Off Delay from OV/UV Fault UV or OV 10% Overdrive, l 2 3.5 7 µs Measure VALID1 or VALID2 Rising Edge VTH(TMROFF) TMR Disable Voltage Threshold Measure VINTVCC-VTMR, Rising Edge l 50 100 180 mV VTH(TMRHYS) TMR Disable Voltage Hysteresis 120 mV
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
Specification represents the diode-OR’d current of V1 or V2 input may cause permanent damage to the device. Exposure to any Absolute supplies. Current is split evenly if both supplies are equal. Maximum Rating condition for extended periods may affect device
Note 4:
UV1 or UV2 driven below VTH. Time is measured from respective reliability and lifetime. rising edge G1 crossing VS1 – 3V or G2 crossing VS2 – 3V to next valid
Note 2:
All currents into pins are positive; all voltages are referenced to priority falling edge G1 crossing VS1 – 3V or G2 crossing VS2 – 3V. GND unless otherwise specified. 4418f 4 For more information www.linear.com/LTC4418 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts