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dc1555af

DEMO MANUAL DC1555A

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 representation 
that the interconnection of its circuits as described herein will not infringe on existing patent rights.

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Summary of Contents for DC1555A

Page 1: ...wo 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 demo SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input Voltage Range 40 60 V VIN UVLO Input Supply Undervoltage Lockout VIN Rising 1 8 2 2 2 4 V IVIN Input Supply Current SHDN 0V SHDN 2 ...

Page 2: ...ltage is between 0V and 0 5V all LEDs are off and input current is 1 8mA FET leakage or other board leakage paths can pull VOUT slightly nega tive but it will be clamped by the internal protection diode 7 Ramp supply back to 0V QUICK START PROCEDURE protection circuits automatically isolates the load from negative input voltages During normal operation a high voltage charge pump enhances the gate ...

Page 3: ...5af DEMO MANUAL DC1555A 0V TO 20V dc1555a F01a POWER SUPPLY 0V TO 30V LOAD dc1555a F01b R POWER SUPPLY QUICK START PROCEDURE Figure 1a Reverse Voltage Measurement Figure 1b Undervoltage Overvoltage Measurement ...

Page 4: ...F 10 0 D7 OPT Zener Diode 40V POWERDI 123 Diodes Inc DFLT40A PbF 11 4 E1 E2 E6 E7 Turret Testpoint 0 094 Mill Max 2501 2 00 80 00 00 07 0 12 4 E3 E4 E5 E8 Turret Testpoint 0 063 Mill Max 2308 2 00 80 00 00 07 0 13 3 JP1 JP2 JP3 Headers Sgl Row 3 Pins 2mm Ctrs Samtec TMM 103 02 L S 14 1 Q1 Dual N Channel 30V SO 8 Vishay SI4230DY T1 GE3 15 0 Q2 OPT Dual N Channel Low Current SOT 563 Diodes Inc 2N700...

Page 5: ... 5 3523 5 1 5 23 5 7 21 1 7 78 33 7 21 20321 17 68 67 787 21 1 35 17 5 8 7 2 5 287 0 6 1 17 7 5 8 7 3 5 250 1 25 5 7 217 7 1 5 7 12 2 33 7 216 1 1 5 1 25 66 67 1 7 6 5 8 7 6 35235 7 5 72 1 5 7 12 2 1 6 0 7 6833 25 86 7 1 5 7 12 2 3 576 6 121 www linear com 02 5 8 7 7KXUVGD HFHPEHU 92 7 1 7 5 9 5 89 29 1 1 7 76 5 Dilian R 5 9 56 6833 3527 7 21 6 7 12 5 9 6 7 2 7 7 APPROVALS 3 6 33 1 TECHNOLOGY D 0L...

Page 6: ...LUDING 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 use of the go...

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