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dc1555cfd

DEMO MANUAL DC1555C

operating principles

The LTC4365/LTC4365-1 monitors the input rail voltage 

and disconnects downstream circuits when the input volt-

age is too low, too high or negative. The LTC4365 provides 

accurate overvoltage and undervoltage comparators to 

ensure that power is applied to the system only if the input 

supply is within the allowable voltage window. Reverse 

supply protection circuit automatically isolates the load 

from negative input voltages.
During normal operation, a high voltage charge pump 

enhances the gate of external N-channel power MOSFETs. 
The controller consumes 10µA during shutdown and 

125µA while operating.

Summary of Contents for LTC4365

Page 1: ...e and the delay from turn off to low power operation These delays are 36ms typ both fortheLTC4365 whiletheyare1msand0 7ms respectively for the LTC4365 1 The DC1555C includes the controller two back to back connected power MOSFETs three jumpers and three LEDs to indicate the input and output voltages and the FAULT pin signal Design files for this circuit board are available at http www linear com d...

Page 2: ...rvoltage and undervoltage comparators to ensure that power is applied to the system only if the input supply is within the allowable voltage window Reverse supply protection circuit automatically isolates the load from negative input voltages During normal operation a high voltage charge pump enhances the gate of external N channel power MOSFETs The controller consumes 10µA during shutdown and 125...

Page 3: ...ltageisbetween0Vand 0 5V all LEDs are off and the input current is 1 8mA FET leakage or other board leakage paths can pull VOUT slightly negative but it will be clamped by the internal protection diode 7 Ramp supply back to 0V Undervoltage Overvoltage Test Figure 1a 8 Reversethepolarityofpowersupplyconnectionacross VIN to GND connect positive rail to VIN and negative rail to GND 9 Ramp supply up t...

Page 4: ...4 dc1555cfd DEMO MANUAL DC1555C quick start procedure Figure 1a Undervoltage Overvoltage Measurement Figure 1b Reverse Voltage Measurement ...

Page 5: ...Milpitas CA 95035 Phone 408 432 1900 1630 McCarthy Blvd LTC CONFIDENTIAL FOR CUSTOMER USE ONLY CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER SUPPLIED SPECIFICATIONS HOWEVER IT REMAINS THE CUSTOMER S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICA...

Page 6: ...ATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE EXCEPT TO THE EXTENT OF THIS INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES The user assumes all responsibility and liability for proper and safe handling of the goods Further the user releases LTC from all claims arising from the handling or us...

Page 7: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1555C B DC1555C A ...

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