Programming Ethernet Jack electric circuit board STEF12PUR Enable / Fault functions
STEF12PUR
Electronic fuse for 12 V line
Features
■ Continuous current (typ): 3.6 A
■ N-channel on-resistance (typ): 53 mΩ
■ Enable/Fault functions
■ Output clamp voltage (typ):15 V
■ Undervoltage lockout
■ Short-circuit limit
■ Overload current limit
■ Controlled output voltage ramp
■ Thermal latch (typ): 165 °C
■ Uses tiny capacitors
■ Operating junction temp. - 40 °C to 125 °C
■ Available in DFN10 (3 x 3 mm) package
Applications
■ Hard disk drives
■ Solid state drives (SSD)
■ Hard disk and SSD arrays
■ Set-top boxes
■ DVD and Blu-Ray disc drivers
Description
The STEF12 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 12 V rail, it is capable of protecting the electronic circuitry on its output from overcurrent and overvoltage. The device has a controlled delay and turn-on time. When an overload condition occurs, the STEF12 limits the output current to a predefined safe value. If the anomalous overload condition persists it goes into an open state, disconnecting the load from the power supply. If a continuous short-circuit is present on the board, when power is re-applied the E-fuse initially limits the output current to a safe value and then again goes into an open state. The device is equipped with a thermal protection circuit. The intervention of the thermal protection is signalled to the board monitoring circuits through a signal on the Fault pin. Unlike the mechanical fuses, which must be physically replaced after a single event, the Efuse does not degrade in its performance after short-circuit/thermal protection interventions and it is reset either by recycling the supply voltage or using the Enable pin. The companion chip for the 5 V power rails is also available with part number STEF05.
A part of stock list
| TRANS STW34NM60ND |
ST |
319 |
TO-247 |
| C.I LF444CMX |
TI |
JC91AD/JC92AB |
SOP-14 |
| DIODO STTH12R06D |
TI |
315 |
TO-220AC |
| C.I UC3525ADWTR |
TI |
5AZ129V |
SOP-16 |
| C.I UC3845AD8TR |
TI |
56MAOD6 |
SOP-8 |
| C.I TC4423COE |
MICROCHIP |
0838OTA |
SOP-16 |
| C.I TC4424COE |
MICROCHIP |
1209448 |
SOP-16 |
| C.I SN74LVC06AD |
MICROCHIP |
9AD6T5K |
SOP-14 |
| DIODO 1N4756A |
SEMTECH |
SL0C2P0629Z200G/SL0C2P0509Z006G |
DO-41 |
| C.I ICL7660CBAZ |
INTERSIL |
V1608BA |
SOP-8 |
| C.I MM74HC164MX |
FSC |
P0548AD/PF8AD |
SOP-14 |
| C.I SN74LS373N |
TI |
62C068K |
DIP-20 |
| C.I TL074CN |
TI |
65A3QQM |
DIP-14 |
| C.I DG529CJ |
INTERSIL |
413 |
DIP-18 |
| CAP 0603 1,5NF 50V X7R 5% 06035C152JAT2A |
AVX |
1638 |
SMD0603 |
| CAP 0805 10UF 16V X5R CL21A106KOQNNNE |
SAMSUNG |
ACAHOSH |
SMD0805 |
| DIODO BAV99 |
|
1626/A7W |
SOT-23 |
| C.I TLC072CDGNR |
TI |
TI4C/ADV |
MSOP-8 |
| C.I LM2936Z-5,0 |
NSC |
81AX |
TO-92 |
| C.I TLC072CDGNR |
TI |
TI4C/ADV |
MSOP-8 |
| C.I TL074CN |
TI |
65A3QQM/67ALGQM |
DIP-14 |
| C.I CD4093BM96 |
TI |
1631+5/68AG96K |
SOP-14 |
| C.I SN7407N |
TI |
5CAQ63K |
DIP-14 |
| BD9876EFJ-E2 |
ROHM |
3472 |
HTSOP-8 |
| LD1086V33 |
ST |
833 |
TO-220 |
| 74LVC07AD |
|
1607 |
SOP-14 |
| CAT811STBI-GT3 |
ON |
VEAL |
SOT-143 |
| ACOPLADOR 4N37 |
FSC |
513Q |
DIP-6 |
| C.I 74LVC04AD |
|
1433 |
SOP-14 |
| C.I 74LVC86AD |
|
0303+ |
SOP-14 |
