Datasheet LT8610 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current |
| Seiten / Seite | 22 / 3 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| Dateiformat / Größe | PDF / 308 Kb |
| Dokumentensprache | Englisch |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LT8610
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
Oscillator Frequency RT = 221k, ILOAD = 1A l 180 210 240 kHz RT = 60.4k, ILOAD = 1A l 665 700 735 kHz RT = 18.2k, ILOAD = 1A l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance ISW = 1A 120 mΩ Top Power NMOS Current Limit l 3.5 4.8 5.8 A Bottom Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 65 mΩ Bottom Power NMOS Current Limit VINTVCC = 3.4V 2.5 3.3 4.8 A SW Leakage Current VIN = 42V, VSW = 0V, 42V –1.5 1.5 µA EN/UV Pin Threshold EN/UV Rising l 0.94 1.0 1.06 V EN/UV Pin Hysteresis 40 mV EN/UV Pin Current VEN/UV = 2V –20 20 nA PG Upper Threshold Offset from VFB VFB Falling l 6 9.0 12 % PG Lower Threshold Offset from VFB VFB Rising l –6 –9.0 –12 % PG Hysteresis 1.3 % PG Leakage VPG = 3.3V –40 40 nA PG Pull-Down Resistance VPG = 0.1V l 680 2000 Ω SYNC Threshold SYNC Falling 0.8 1.1 1.4 V SYNC Rising 1.6 2.0 2.4 V SYNC Pin Current VSYNC = 2V –40 40 nA TR/SS Source Current l 1.2 2.2 3.2 µA TR/SS Pull-Down Resistance Fault Condition, TR/SS = 0.1V 230 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperatures greater than 125°C. may cause permanent damage to the device. Exposure to any Absolute
Note 3:
This IC includes overtemperature protection that is intended to Maximum Rating condition for extended periods may affect device protect the device during overload conditions. Junction temperature will reliability and lifetime. exceed 150°C when overtemperature protection is active. Continuous
Note 2:
The LT8610E is guaranteed to meet performance specifications operation above the specified maximum operating junction temperature from 0°C to 125°C junction temperature. Specifications over the –40°C will reduce lifetime. to 125°C operating junction temperature range are assured by design, characterization, and correlation with statistical process controls. The LT8610I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT8610H is guaranteed over the full –40°C to 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction 8610fa For more information www.linear.com/LT8610 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics 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
Oscillator Frequency RT = 221k, ILOAD = 1A l 180 210 240 kHz RT = 60.4k, ILOAD = 1A l 665 700 735 kHz RT = 18.2k, ILOAD = 1A l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance ISW = 1A 120 mΩ Top Power NMOS Current Limit l 3.5 4.8 5.8 A Bottom Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 65 mΩ Bottom Power NMOS Current Limit VINTVCC = 3.4V 2.5 3.3 4.8 A SW Leakage Current VIN = 42V, VSW = 0V, 42V –1.5 1.5 µA EN/UV Pin Threshold EN/UV Rising l 0.94 1.0 1.06 V EN/UV Pin Hysteresis 40 mV EN/UV Pin Current VEN/UV = 2V –20 20 nA PG Upper Threshold Offset from VFB VFB Falling l 6 9.0 12 % PG Lower Threshold Offset from VFB VFB Rising l –6 –9.0 –12 % PG Hysteresis 1.3 % PG Leakage VPG = 3.3V –40 40 nA PG Pull-Down Resistance VPG = 0.1V l 680 2000 Ω SYNC Threshold SYNC Falling 0.8 1.1 1.4 V SYNC Rising 1.6 2.0 2.4 V SYNC Pin Current VSYNC = 2V –40 40 nA TR/SS Source Current l 1.2 2.2 3.2 µA TR/SS Pull-Down Resistance Fault Condition, TR/SS = 0.1V 230 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperatures greater than 125°C. may cause permanent damage to the device. Exposure to any Absolute
Note 3:
This IC includes overtemperature protection that is intended to Maximum Rating condition for extended periods may affect device protect the device during overload conditions. Junction temperature will reliability and lifetime. exceed 150°C when overtemperature protection is active. Continuous
Note 2:
The LT8610E is guaranteed to meet performance specifications operation above the specified maximum operating junction temperature from 0°C to 125°C junction temperature. Specifications over the –40°C will reduce lifetime. to 125°C operating junction temperature range are assured by design, characterization, and correlation with statistical process controls. The LT8610I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT8610H is guaranteed over the full –40°C to 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction 8610fa For more information www.linear.com/LT8610 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts