Datasheet LT8636, LT8637 (Analog Devices) - 3

LT8636/LT8637
ORDER INFORMATION PACKAGE MSL PART NUMBER PART MARKING* FINISH CODE PAD FINISH TYPE** RATING TEMPERATURE RANGE AUTOMOTIVE PRODUCTS***
LT8636EV#WPBF –40°C to 125°C LT8636JV#WPBF –40°C to 150°C 8636 LT8636JV#WTRPBF –40°C to 150°C e4 Au (RoHS) LQFN (Laminate Package LT8636HV#WPBF with QFN Footprint) 3 –40°C to 150°C LT8637EV#WPBF –40°C to 125°C 8637 LT8637JV#WPBF –40°C to 150°C • Contact the factory for parts specified with wider operating temperature • Recommended PCB Assembly and Manufacturing Procedures ranges. *Device temperature grade is identified by a label on the • Package and Tray Drawings shipping container. • Pad finish code is per IPC/JEDEC J-STD-609. Parts ending with PBF are RoHS and WEEE compliant. **The LT8636/LT8637 package has the same dimensions as a standard 4mm × 3mm QFN package.
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Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.
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
Minimum Input Voltage l 3.0 3.4 V VIN Quiescent Current in Shutdown VEN/UV = 0V 1 3 µA l 1 10 µA LT8636 VIN Quiescent Current in Sleep VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V 1.7 4 µA (Internal Compensation) l 1.7 10 µA LT8637 VIN Quiescent Current in Sleep VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V, VBIAS = 0V 230 290 µA (External Compensation) l 230 340 µA VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V, VBIAS = 5V 19 25 µA LT8637 BIAS Quiescent Current in Sleep VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V, VBIAS = 5V 200 260 µA LT8636 VIN Current in Regulation VOUT = 0.97V, VIN = 6V, ILOAD = 1mA, VSYNC = 0 220 390 µA Feedback Reference Voltage VIN = 6V 0.966 0.970 0.974 V VIN = 6V l 0.956 0.970 0.982 V Feedback Voltage Line Regulation VIN = 4.0V to 36V l 0.004 0.02 %/V Feedback Pin Input Current VFB = 1V –20 20 nA LT8637 Error Amp Transconductance VC = 1.25V 1.7 mS LT8637 Error Amp Gain 260 LT8637 VC Source Current VFB = 0.77V, VC = 1.25V 350 µA LT8637 VC Sink Current VFB = 1.17V, VC = 1.25V 350 µA LT8637 VC Pin to Switch Current Gain 5 A/V LT8637 VC Clamp Voltage 2.6 V BIAS Pin Current Consumption VBIAS = 3.3V, fSW = 2MHz 14 mA Rev. C For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Applications Related Parts