Datasheet LT8610AC, LT8610AC-1 (Analog Devices) - 3

link to page 2 LT8610AC/LT8610AC-1
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
VIN Current in Regulation VOUT = 0.8V, VIN = 6V, Output Load = 100µA l 30 60 µA VOUT = 0.8V, VIN = 6V, Output Load = 1mA l 225 500 µA Feedback Reference Voltage VIN = 6V, ILOAD = 0.5A 0.794 0.800 0.806 V VIN = 6V, ILOAD = 0.5A l 0.788 0.800 0.812 V Feedback Voltage Line Regulation VIN = 4.0V to 42V, ILOAD = 1A l 0.004 0.02 %/V Feedback Pin Input Current VFB = 1V –20 20 nA INTVCC Voltage ILOAD = 0mA, VBIAS = 0V 3.23 3.4 3.57 V ILOAD = 0mA, VBIAS = 3.3V 3.25 3.29 3.35 V INTVCC Undervoltage Lockout 2.37 2.47 2.57 V BIAS Pin Current Consumption VBIAS = 3.3V, ILOAD = 1A, 2MHz 9.2 mA Minimum On-Time ILOAD = 1A, SYNC = 0V l 15 30 45 ns ILOAD = 1A, SYNC = 3.3V l 15 30 45 ns Minimum Off-Time 95 125 ns Oscillator Frequency RT = 221k, ILOAD = 1A (LT8610AC Only) l 180 210 240 kHz RT = 60.4k, ILOAD = 1A (LT8610AC Only) l 665 700 735 kHz RT = 18.2k, ILOAD = 1A (LT8610AC/LT8610AC-1) l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance ISW = 1A 120 mΩ Top Power NMOS Current Limit l 5 6.7 8 A Bottom Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 65 mΩ Bottom Power NMOS Current Limit VINTVCC = 3.4V 3.4 4.3 5.4 A SW Leakage Current VIN = 42V, VSW = 0V, 42V –1.5 1.5 µA EN/UV Pin Threshold EN/UV Rising l 0.955 1.015 1.075 V EN/UV Pin Hysteresis 50 mV EN/UV Pin Current VEN/UV = 2V –20 20 nA PG Upper Threshold Offset from VFB VFB Falling l 5 8.0 11 % PG Lower Threshold Offset from VFB VFB Rising l –11 –8.0 –5 % PG Hysteresis 0.4 % 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 TR/SS Source Current l 1.0 2.0 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 operating junction temperature range. The LT8610ACH/LT8610ACH-1 is may cause permanent damage to the device. Exposure to any Absolute guaranteed over the full –40°C to 150°C operating junction temperature Maximum Rating condition for extended periods may affect device range. High junction temperatures degrade operating lifetimes. Operating reliability and lifetime. lifetime is derated at junction temperatures greater than 125°C.
Note 2:
The LT8610ACE/LT8610ACE-1 is guaranteed to meet performance
Note 3:
This IC includes overtemperature protection that is intended to specifications from 0°C to 125°C junction temperature. Specifications over protect the device during overload conditions. Junction temperature will the –40°C to 125°C operating junction temperature range are assured by exceed 150°C when overtemperature protection is active. Continuous design, characterization, and correlation with statistical process controls. operation above the specified maximum operating junction temperature The LT8610ACI/LT8610ACI-1 is guaranteed over the full –40°C to 125°C will reduce lifetime. Rev. B For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts