LTC1643AHCGN#TRPBF Linear Technology, LTC1643AHCGN#TRPBF Datasheet
LTC1643AHCGN#TRPBF
Specifications of LTC1643AHCGN#TRPBF
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LTC1643AHCGN#TRPBF Summary of contents
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... Available in a Narrow 16-Lead SSOP Package U APPLICATIO S ■ PCI-Based Servers ■ CompactPCI Compliant Boards , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Hot Swap is a registered trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. U TYPICAL APPLICATION SYSTEM ...
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LTC1643AL LTC1643AL-1/LTC1643AH ABSOLUTE MAXIMUM (Note 1) Supply Voltages 12V ................................................................ 13. .............................................................. –13.2V EEIN Input Voltage (Pin 5) ................ – 0.3V to (12V Output Voltages (Pins 6, 7) ...... – 0.3V to (12V Analog Voltages ...
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DC ELECTRICAL CHARACTERISTICS The denotes specifications which apply over the full operating temperature range, otherwise specifications are 25°C. ● 12V – 12V 3.3V, V 12VIN EEIN 3VIN SYMBOL PARAMETER V Power-Good ...
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LTC1643AL LTC1643AL-1/LTC1643AH W U TYPICAL PERFORMANCE CHARACTERISTICS Timer Current vs Temperature 23.5 23.0 22.5 22.0 21.5 21.0 20.5 20.0 19.5 –50 – 100 125 TEMPERATURE (°C) 1643A G04 Power Good Threshold Voltage vs Temperature (12V ) ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Circuit Breaker Trip Filter Time vs Temperature 15.50 15.25 15.00 14.75 14.50 14.25 14.00 –50 – 100 125 TEMPERATURE (°C) 1643A G13 V Supply Current EEIN vs Temperature 0.90 0.89 0.88 ...
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LTC1643AL LTC1643AL-1/LTC1643AH W U TYPICAL PERFORMANCE CHARACTERISTICS 3V Undervoltage Lockout IN vs Temperature 2.454 2.452 2.450 2.448 2.446 2.444 2.442 –50 – 100 125 TEMPERATURE (°C) 1643A G21 V Current Foldback EE vs Temperature 600 500 ...
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PIN FUNCTIONS the ON pin pulled low, the GATE pin is pulled high by a 62µA current source and the internal 12V and – 12V switches are turned on. When the ON pin is pulled low or ...
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LTC1643AL LTC1643AL-1/LTC1643AH PIN FUNCTIONS V (Pin 15): –12V Supply Output. A 1.2Ω switch is EEOUT connected between V and V EEIN exceed –10.8V before the PWRGD signal can go high on the LTC1643AH and LTC1643AL. W BLOCK ...
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U U APPLICATIONS INFORMATION LTC1643A FEATURE SUMMARY 1. Allows safe board insertion and removal from either a motherboard (LTC1643AH) or CompactPCI board (LTC1643AL/LTC1643AL-1). 2. Controls all four PCI supplies: –12V, 12V, 3.3V and 5V. 3. Programmable foldback current limit: a ...
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LTC1643AL LTC1643AL-1/LTC1643AH U U APPLICATIONS INFORMATION SYSTEM POWER SUPPLY 10k PCI 6 POWER SYSTEM R4 CONTROLLER 10k 7 RESET ON 10V/DIV TIMER 10V/DIV GATE 10V/DIV 12V OUT 5V/DIV 5V OUT 5V/DIV 3V OUT 5V/DIV V ...
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U U APPLICATIONS INFORMATION Timer During a power-up sequence, a 22µA current source is connected to the TIMER pin (Pin 4) and current limit faults are ignored until the voltage ramps to within 0.9V of 12V (Pin 1). This feature ...
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LTC1643AL LTC1643AL-1/LTC1643AH U U APPLICATIONS INFORMATION ON 10V/DIV TIMER 10V/DIV GATE 10V/DIV 12V OUT 5V/DIV 3V OUT 5V/DIV 5V OUT 5V/DIV V EEOUT 5V/DIV FAULT 10V/DIV PWRGD 10V/DIV 20ms/DIV Figure 4. Power-Up into a Short on 3.3V Output 5V 3.3V ...
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U U APPLICATIONS INFORMATION MED 5V MED 3.3V R11 † 10Ω V(I/ 12V 1.2k 0.1µF 5% 12V R12 3Ω 5% –12V BD_SEL# V(I/O) V(I/O) R13 D2* 2k R10 2k 5% 12V 5% HEALTHY# ...
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LTC1643AL LTC1643AL-1/LTC1643AH U U APPLICATIONS INFORMATION Increasing 12V and – 12V Current Capability for PCI Applications The internal switches of the LTC1643A are designed for up to 500mA loads on 12V and 200mA on –12V. If more current is needed, ...
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... R4 10k 7 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights Package 16-Lead Plastic SSOP (Narrow .150 Inch) (Reference LTC DWG # 05-08-1641) .045 ± ...
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... Operation, Multifunction Current Control – 20V to –80V Supplies, Active Current Limiting –15V Minimum Floating Supply, Active Current Limiting Floating Supply, Power Good, Active Current Limiting LT/LWI 1006 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2002 LONG 3.3V IN 1643afb ...