TLE4287G .. ,Voltage RegulatorFeatures• Output voltage tolerance ≤ ± 2% Very low standby current consumption Input voltage up t ..
TLE4290G ,5-V Low-Drop Voltage Regulatorapplications, where a stabilized 5 V voltage isrequired. Data Sheet Rev. 1.4 1 2001-10-18TLE 4290Po ..
TLE4295GV30 ,Low-Drop Voltage Regulatorapplications. Therefore the device is equipped withadditional protection functions against over loa ..
TLE4295GV33 ,Low-Drop Voltage RegulatorFunctional DescriptionThe TLE 4295 G is a monolithic integrated low-drop voltage regulator in the v ..
TLE4295GV50 ,Low-Drop Voltage RegulatorFeatures• Three versions: 3.0 V, 3.3 V, 5.0 V Output voltage tolerance 4% Very low drop volta ..
TLE4296-2GV50 , Low Drop Voltage Regulator Two versions: 3.3 V, 5.0 V
TMP87C847U , CMOS 8-BIT MICROCONTROLLER
TMP87CH40F , CMOS 8-Bit Microcontroller
TMP87CH40N , CMOS 8-Bit Microcontroller
TMP87CH47U , CMOS 8-BIT MICROCONTROLLER
TMP87CH75F , CMOS 8-BIT MICROCONTROLLER
TMP87CK38N , CMOS 8-BIT MICROCONTROLLER
TLE4287G-TLE4287G .-TLE4287G ..
Voltage Regulator
5-V Voltage Regulator TLE 4287 G
FeaturesOutput voltage tolerance ≤ ± 2%Very low standby current consumptionInput voltage up to 42VReset function down to 1 V output voltageESD protection up to 2000 VAdjustable reset timeOn/Off logicOvertemperature protectionReverse polarity protectionShort-circuit proofVery wide temperature rangeVery small output capacitor New type
Functional DescriptionThe
TLE 4287 G is a monolithic integrated 5V voltage regulator in
P-DSO-14-8package. It supplies an output current IQ > 250mA. The IC is short circuit proof and
incorporates temperature protection which turns off the device at overtemperature.
The input voltage VI is regulated in the range of 7.5V < VI < 40V to VQ,nom =5V.
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 < 4.5V 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 choosing
the external capacitor over a wide range. When the output voltage rises above VQ≥4.5V the reset delay capacitor is charged again. As soon as the delay capacitor
The device has two logic inputs, EN and H. It is turned ON by a voltage >4V at EN, for
example by the ignition and remains active in case H is set LOW, even if the voltage at
EN goes LOW. This makes it possible to implement a self-holding circuit without external
components. When the device is turned OFF, the output voltage drops to 0V and current
consumption tends towards 0μA. (Please see following truth table).
Design Notes for External ComponentsThe input capacitor CI is necessary for compensation line influences. The resonant
circuit consisting of lead inductance and input capacitance can be damped by a resistor
of approx. 1 Ω in series with CI. The output capacitor is necessary for the stability of the
regulating circuit. Stability is guaranteed for CQ≥100nF within the operating
temperature range.
State Table for Turn-On/Turn-Off Logic
Figure1Pin Configuration (top view)
Pin Definitions and Functions
Figure2Block Diagram
Absolute Maximum Ratings
Input I
Output Q
Reset Output RO
Reset Delay D
Enable EN
Hold H
Note:Maximum ratings are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Note:ESD-Protection according to MIL Std. 883: 2kV.
Ground GND
Temperatures
Operating Range
Thermal ResistancesPackage mounted on PCB 80×80×1.5mm3; 35μ Cu; 5μ Sn; Footprint only; zero airflow.
Absolute Maximum Ratings (cont’d)
Electrical Characteristics7.5V≤VI≤40 V; –40°C
4V (unless otherwise specified)
Reset Generator
