MFG:36 Package Cooled:SIEMENS
MFG: 36
Package Cooled: SIEMENS
Description: The TLE 4287 G is a monolithic integrated 5-V voltage regulator in P-DSO-14-4 package. It supplies an output current...
The TLE 4287 G is a monolithic integrated 5-V voltage regulator in P-DSO-14-4 package. It supplies an output current IQ > 250 mA. The IC is short circuit proof and incorporates temperature protection that disables it at overtemperature.
The input voltage VI is regulated in the range of 7.5 V < VI < 40 V to VQrated = 5 V. Therefore a reference voltage, which is kept highly accurate by resistance adjustment, is compared via a control amplifier to a voltage that is proportional to the output voltage. The control amplifier drives the base of the series transistor by a buffer.
A comparator in the reset-generator block compares a reference voltage that is independent of the input voltage to the scaled-down output voltage. In the case of an output voltage VQ < 4.5 V the reset delay capacitor is discharged and a reset signal is generated by setting the reset output LOW. The reset delay time can be set by an external capacitor within a wide range. When the output voltage rises above VQ 4.5 V the reset delay capacitor is charged again. As soon as the delay capacitor voltage reaches the upper switching threshold the reset output pin is set HIGH again.
| 40 °C < Tj < 150 °C | |||||
| Parameter | Symbol | Limit Values | Unit | Remarks | |
| Input I | |||||
| Voltage | VI | 0.5 | 42 | V | - |
| Current | II | - | mA | internally limited | |
| Output Q | |||||
| Voltage | VQ | 0.3 | 7 | V | - |
| Current | IQ | - | - | internally limited | |
| Reset Output R | |||||
| Voltage | VR | 0.3 | 7 | V | - |
| Current | Ir | - | - | - | internally limited |
| Reset Delay | |||||
| Voltage | Vd | -0.3 | 42 | V | - |
| Current | Id | - | - | - | - |
| Enable | |||||
| Voltage | VEN | -42 | 42 | V | - |
| Current | IEN | -5 | 5 | mA | t 400 ms |
| Hold | |||||
| Voltage | VH | -2 | 7 | V | - |
| Current | IH | - | - | - | internally limited |
TLE4287G
PDF/DataSheet Download
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