(China (Mainland))
Product Summary
The LT1173 is a versatile micropower DC-DC converter.It requires only three external components to deliver a fixed output of 5V or 12V. Supply voltage ranges from 2.0V to 12V in step-up mode and to 30V in step-down mode. The LT1173 functions equally well in step-up, stepdown
or inverting applications.It consumes just 110mA supply current at standby, making it ideal for applications where low quiescent current is important. The device can deliver 5V at 80mA from a 3V input in step-up mode or 5V at 200mA from a 12V input in step-down mode.Switch current limit can be programmed with a single resistor. An auxiliary gain block can be configured as a low battery detector, linear post regulator, under voltage lockout circuit or error amplifier.For input sources of less than 2V, use the LT1073.
Parametrics
Absolute Maximum Ratings:
(1)Supply Voltage (VIN):36V;
(2)SW1 Pin Voltage (VSW1):50V;
(3)SW2 Pin Voltage (VSW2):-0.5V to VIN;
(4)Feedback Pin Voltage (LT1173):5V;
(5)Sense Pin Voltage (LT1173, -5, -12):36V;
(6)Maximum Power Dissipation:500mW;
(7)Maximum Switch Current:1.5A;
(8)Operating Temperature Range:0℃ to 70℃;
(9)Storage Temperature Range:-65℃ to 150℃;
(10)Lead Temperature, (Soldering, 10 sec.):300℃
Features
(1)Operates at Supply Voltages From 2.0V to 30V;
(2)Consumes Only 110mA Supply Current;
(3)Works in Step-Up or Step-Down Mode;
(4)Only Three External Components Required;
(5)Low Battery Detector Comparator On-Chip;
(6)User-Adjustable Current Limit;
(7)Internal 1A Power Switch;
(8)Fixed or Adjustable Output Voltage Versions;
(9)Space Saving 8-Pin MiniDIP or SO8 Package
Diagrams
<IMG border=0 src="http://www.seekic.com/uploadfile/ic-mfg/20128402352306.jpg">
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 LT1173CS8 |
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IC REG BUCK BOOST INV ADJ 8SOIC |
Data Sheet |
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LT1173CS8#PBF |
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IC REG BUCK BOOST INV ADJ 8SOIC |
Data Sheet |
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LT1173CS8#TR |
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IC REG BUCK BOOST INV ADJ 8SOIC |
Data Sheet |
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LT1173CS8#TRPBF |
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IC REG BUCK BOOST INV ADJ 8SOIC |
Data Sheet |
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LT1173CS8-12#PBF |
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IC REG BUCK BOOST INV 12V 8SOIC |
Data Sheet |
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LT1173CS8-12 |
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IC REG BUCK BOOST INV 12V 8SOIC |
Data Sheet |
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LT1173CS8-12#TR |
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IC REG BUCK BOOST INV 12V 8SOIC |
Data Sheet |
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LT1173CS8-12#TRPBF |
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IC REG BUCK BOOST INV 12V 8SOIC |
Data Sheet |
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