Datasheet LT3507 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Triple Monolithic Step-Down Regulator with LDO |
| 页数 / 页 | 30 / 4 — electrical characteristics. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 395 Kb |
| 文件语言 | 英语 |
electrical characteristics. The. denotes the specifications which apply over the full operating
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LT3507
electrical characteristics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN1, VIN2, VIN3 = 12V, VBOOST1, VBOOST2, VBOOST3 = 17V, unless otherwise noted (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Load Regulation IDRIVE from 0.1mA to 10mA 0.005 %/mA DRIVE Output Current Limit l 10 15 22.5 mA Dropout Voltage, VIN1 to DRIVE IDRIVE = 10mA, VIN1 = 5V 1.7 2.0 V Dropout Voltage, BIAS to DRIVE IDRIVE = 10mA, VIN1 = 5V 0.5 0.8 V
Over/Undervoltage Lockout
Undervoltage Lockout Threshold 1.15 1.20 1.25 V Overvoltage Lockout Threshold 1.15 1.20 1.25 V Undervoltage Lockout Hysteresis Current V(UVLO) < 1.2V 7 10 13 µA Overvoltage Lockout Hysteresis Current V(OVLO) > 1.2V –7 –10 –13 µA Input Bias Current (OVLO and UVLO) V(OVLO) = 1.0V, V(UVLO) = 1.5V –100 –200 nA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
Current limit is guaranteed by design and/or correlation to static may cause permanent damage to the device. Exposure to any Absolute test. Slope compensation reduces current limit at higher duty cycles. Maximum Rating condition for extended periods may affect device
Note 4:
This is the minimum voltage across the boost capacitor needed to reliability and lifetime. guarantee full saturation of the internal power switch.
Note 2:
The LT3507E is guaranteed to meet performance specifications
Note 5:
This IC includes overtemperature protection that is intended from 0°C to 125°C junction temperature. Specifications over the –40°C to protect the device during momentary overload conditions. to 125°C operating junction temperature range are assured by design, Junction temperature will exceed the maximum operating range when characterization and correlation with statistical process controls. The overtemperature protection is active. Continuous operation above the LT3507I is guaranteed to meet performance specifications from –40°C specified maximum operating junction temperature may impair device to 125°C junction temperature. The LT3507H is guaranteed over the full reliability. –40°C to 150°C operating junction temperature range. High junction
Note 6:
Positive currents flow into pins, negative currents flow out of pins. temperatures degrade operating lifetimes. Operating lifetime is derated at Minimum and maximum specifications refer to absolute values. junction temperatures greater than 125°C. 3507fb 4 For more information www.linear.com/LT3507
electrical characteristics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN1, VIN2, VIN3 = 12V, VBOOST1, VBOOST2, VBOOST3 = 17V, unless otherwise noted (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Load Regulation IDRIVE from 0.1mA to 10mA 0.005 %/mA DRIVE Output Current Limit l 10 15 22.5 mA Dropout Voltage, VIN1 to DRIVE IDRIVE = 10mA, VIN1 = 5V 1.7 2.0 V Dropout Voltage, BIAS to DRIVE IDRIVE = 10mA, VIN1 = 5V 0.5 0.8 V
Over/Undervoltage Lockout
Undervoltage Lockout Threshold 1.15 1.20 1.25 V Overvoltage Lockout Threshold 1.15 1.20 1.25 V Undervoltage Lockout Hysteresis Current V(UVLO) < 1.2V 7 10 13 µA Overvoltage Lockout Hysteresis Current V(OVLO) > 1.2V –7 –10 –13 µA Input Bias Current (OVLO and UVLO) V(OVLO) = 1.0V, V(UVLO) = 1.5V –100 –200 nA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
Current limit is guaranteed by design and/or correlation to static may cause permanent damage to the device. Exposure to any Absolute test. Slope compensation reduces current limit at higher duty cycles. Maximum Rating condition for extended periods may affect device
Note 4:
This is the minimum voltage across the boost capacitor needed to reliability and lifetime. guarantee full saturation of the internal power switch.
Note 2:
The LT3507E is guaranteed to meet performance specifications
Note 5:
This IC includes overtemperature protection that is intended from 0°C to 125°C junction temperature. Specifications over the –40°C to protect the device during momentary overload conditions. to 125°C operating junction temperature range are assured by design, Junction temperature will exceed the maximum operating range when characterization and correlation with statistical process controls. The overtemperature protection is active. Continuous operation above the LT3507I is guaranteed to meet performance specifications from –40°C specified maximum operating junction temperature may impair device to 125°C junction temperature. The LT3507H is guaranteed over the full reliability. –40°C to 150°C operating junction temperature range. High junction
Note 6:
Positive currents flow into pins, negative currents flow out of pins. temperatures degrade operating lifetimes. Operating lifetime is derated at Minimum and maximum specifications refer to absolute values. junction temperatures greater than 125°C. 3507fb 4 For more information www.linear.com/LT3507