Product Summary
The LT1317BCMS8#TRis a micropower, fixed frequency step-up DC/DC converter that operate over a wide input voltage range of 1.5V to 12V. The LT1317BCMS8#TR features automatic shifting to power saving Burst ModeTM operation at light loads. High efficiency is maintained over a broad 300mA to 200mA load range. Peak switch current during Burst Mode operation is kept below 250mA for most operating conditions which results in low output ripple voltage, even at high input voltages. Applications are (1)Cellular telephones; (2)Cordless telephones; (3)Pagers; (4)GPS receivers; (5)Battery backup; (6)Portable electronic equipment; (7)Glucose meters; (8)Diagnostic medical instrumentation.
Parametrics
LT1317BCMS8#TR absolute maximum ratings:(1)VIN, LBO Voltage: 12V; (2)SW Voltage: –0.4V to 30V; (3)FB Voltage: VIN + 0.3V; (4)VC Voltage: 2V; (5)LBI Voltage: 0V ≤ VLBI ≤ 1V; (6)SHDN Voltage: 6V; (7)Junction Temperature: 125°C; (8)Operating Temperature Range Commercial : 0°C to 70°C; (9)Industrial: –40°C to 85°C; (10)Storage Temperature Range: –65°C to 150°C; (11)Lead Temperature (Soldering, 10 sec): 300°C.
Features
LT1317BCMS8#TR features: (1)100mA Quiescent Current; (2)Operates with VIN as Low as 1.5V; (3)600kHz Fixed Frequency Operation; (4)Starts into Full Load; (5)Low-Battery Detector Active iShutdown; (6)Automatic Burst Mode Operatioat Light Load (LT1317); (7)Continuous Switching at Light Loads (LT1317B); (8)Low VCESAT Switch: 300mV at 500mA; (9)Pifor PiCompatible with the LT1307/LT1307B.
Diagrams

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![]() IC REG BOOST ADJ 0.5A 8MSOP |
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![]() LT1317BCMS8#TRPBF |
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![]() IC REG BOOST ADJ 0.5A 8MSOP |
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(China (Mainland))









