Datasheet LT8618, LT8618-3.3 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | High Efficiency 65V/100mA Synchronous Buck |
| Páginas / Página | 20 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 2.9 Mb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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- LT8618EDDB#TRMPBF LT8618EDDB#TRPBF LT8618EDDB#WTRMPBF LT8618EDDB#WTRPBF LT8618EDDB-3.3#TRMPBF LT8618EDDB-3.3#TRPBF LT8618EDDB-3.3#WTRMPBF LT8618EDDB-3.3#WTRPBF LT8618IDDB#TRMPBF LT8618IDDB#TRPBF LT8618IDDB#WTRMPBF LT8618IDDB#WTRPBF LT8618IDDB-3.3#TRMPBF LT8618IDDB-3.3#TRPBF LT8618IDDB-3.3#WTRMPBF LT8618IDDB-3.3#WTRPBF
Versión de texto del documento
LT8618/LT8618-3.3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Operating Input Voltage l 3.4 60 V Minimum Input Voltage (Note 5) l 2.9 3.4 V VIN Quiescent Current VEN/UV = 0V 1 4 µA VEN/UV = 2V, Not Switching l 1.7 12 µA VIN Current in Regulation VIN = 12V, VOUT = 3.3V, ILOAD = 100µA 56 µA VIN = 12V, VOUT = 3.3V, ILOAD = 1mA 400 µA LT8618 Feedback Reference Voltage VIN = 12V, ILOAD = 100µA l 0.762 0.778 0.798 V LT8618-3.3 Output Voltage VIN = 12V, ILOAD = 100µA l 3.2 3.3 3.4 V FB/OUT Voltage Line Regulation VIN = 4V to 60V l ±0.02 ±0.06 %/V LT8618 FB Pin Input Current VFB = 0.8V l ±20 nA BIAS Pin Current Consumption VBIAS = 3.3V, ILOAD = 30mA, 700kHz 0.8 mA Minimum On-Time l 35 65 ns Minimum Off-Time l 90 120 ns Oscillator Frequency RT = 221k l 140 200 260 kHz RT = 18.2k l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance 3 Ω Top Power NMOS Current Limit l 150 200 250 mA Bottom Power NMOS On-Resistance 1.3 Ω SW Leakage Current VIN = 48V l 15 µA EN/UV Pin Threshold Pin Voltage Rising l 0.98 1.05 1.11 V EN/UV Pin Hysteresis 50 mV EN/UV Pin Current VEN/UV = 2V ±50 nA PG Upper Threshold Offset from VFB/OUT VFB/OUT Rising l 5.0 7.5 10.0 % PG Lower Threshold Offset from VFB/OUT VFB/OUT Falling l –5.0 –7.5 –10.0 % PG Hysteresis 0.5 % PG Leakage VPG = 42V l ±200 nA PG Pull-Down Resistance VPG = 0.1V 550 1200 Ω TR/SS Source Current VTR/SS = 0.1V l 1 2 3.5 µA TR/SS Pull-Down Resistance Fault Condition, VTR/SS = 0.1V 300 900 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
This IC includes overtemperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during overload conditions. Junction temperature will Maximum Rating condition for extended periods may affect device exceed 125°C when overtemperature protection is active. Continuous reliability and lifetime. operation above the specified maximum operating junction temperature
Note 2:
The LT8618E is guaranteed to meet performance specifications will reduce lifetime from 0°C to 125°C junction temperature. Specifications over the –40°C
Note 4:
Absolute maximum voltage at the VIN and EN/UV pins is 65V for to 125°C operating junction temperature range are assured by design, transients, and 60V for continuous operation. characterization and correlation with statistical process controls. The
Note 5:
For the LT8618-3.3, minimum input voltage will be limited by LT8618I is guaranteed over the full –40°C to 125°C operating junction output voltage. temperature range. Rev. 0 For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Pin Functions Block 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. PARAMETER CONDITIONS MIN TYP MAX UNITS
Operating Input Voltage l 3.4 60 V Minimum Input Voltage (Note 5) l 2.9 3.4 V VIN Quiescent Current VEN/UV = 0V 1 4 µA VEN/UV = 2V, Not Switching l 1.7 12 µA VIN Current in Regulation VIN = 12V, VOUT = 3.3V, ILOAD = 100µA 56 µA VIN = 12V, VOUT = 3.3V, ILOAD = 1mA 400 µA LT8618 Feedback Reference Voltage VIN = 12V, ILOAD = 100µA l 0.762 0.778 0.798 V LT8618-3.3 Output Voltage VIN = 12V, ILOAD = 100µA l 3.2 3.3 3.4 V FB/OUT Voltage Line Regulation VIN = 4V to 60V l ±0.02 ±0.06 %/V LT8618 FB Pin Input Current VFB = 0.8V l ±20 nA BIAS Pin Current Consumption VBIAS = 3.3V, ILOAD = 30mA, 700kHz 0.8 mA Minimum On-Time l 35 65 ns Minimum Off-Time l 90 120 ns Oscillator Frequency RT = 221k l 140 200 260 kHz RT = 18.2k l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance 3 Ω Top Power NMOS Current Limit l 150 200 250 mA Bottom Power NMOS On-Resistance 1.3 Ω SW Leakage Current VIN = 48V l 15 µA EN/UV Pin Threshold Pin Voltage Rising l 0.98 1.05 1.11 V EN/UV Pin Hysteresis 50 mV EN/UV Pin Current VEN/UV = 2V ±50 nA PG Upper Threshold Offset from VFB/OUT VFB/OUT Rising l 5.0 7.5 10.0 % PG Lower Threshold Offset from VFB/OUT VFB/OUT Falling l –5.0 –7.5 –10.0 % PG Hysteresis 0.5 % PG Leakage VPG = 42V l ±200 nA PG Pull-Down Resistance VPG = 0.1V 550 1200 Ω TR/SS Source Current VTR/SS = 0.1V l 1 2 3.5 µA TR/SS Pull-Down Resistance Fault Condition, VTR/SS = 0.1V 300 900 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
This IC includes overtemperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during overload conditions. Junction temperature will Maximum Rating condition for extended periods may affect device exceed 125°C when overtemperature protection is active. Continuous reliability and lifetime. operation above the specified maximum operating junction temperature
Note 2:
The LT8618E is guaranteed to meet performance specifications will reduce lifetime from 0°C to 125°C junction temperature. Specifications over the –40°C
Note 4:
Absolute maximum voltage at the VIN and EN/UV pins is 65V for to 125°C operating junction temperature range are assured by design, transients, and 60V for continuous operation. characterization and correlation with statistical process controls. The
Note 5:
For the LT8618-3.3, minimum input voltage will be limited by LT8618I is guaranteed over the full –40°C to 125°C operating junction output voltage. temperature range. Rev. 0 For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts