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Infineon Technologies Electronic Components Datasheet

TLE7270 Datasheet

5-V Low Drop Voltage Regulator

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5-V Low Drop Voltage Regulator
TLE 7270
Features
www.DOatuaStphueett4vUo.lntaetge 5 V ±2%
• Ultra low current consumption: typ. 20µA
• 300 mA current capability
• Reset Feature
• Very low-drop voltage
• Short-circuit-proof
• Suitable for use in automotive electronics
P-TO252-5-1
Functional Description
The TLE 7270 is a monolithic integrated low-drop
voltage regulator which can supply loads up to 300 mA.
An input voltage up to 42 V is regulated to VQ,nom = 5.0 V
with a precision of ±2%. Due to its integrated reset
circuitry featuring a 2-step adjustable power on timing
and output voltage monitoring the IC is well suited for
µ-controller supplies. The sophisticated design allows to
P-TO263-5-1
achieve stable operation even with ceramic output
capacitors down to 470 nF. The device is designed for
the harsh environment of automotive applications. Therefore it is protected against
overload, short circuit and overtemperature conditions. Of course the TLE 7270 can be
used also in all other applications, where a stabilized 5 V voltage is required. Due to its
ultra low current consumption the TLE 7270 is dedicated for use in applications
permanently connected to VBAT. An integrated output sink current circuitry keeps the
voltage at the Output pin Q below 5.5 V even when reverse currents are applied. Thus
connected devices are protected from overvoltage damage. For applications requiring
extremely low noise levels the Infineon voltage regulator family TLE 42XY and
TLE 44XY is more suited than the TLE 7270. A mV-range output noise on the TLE 7270
caused by the charge pump operation is unavoidable due to the ultra low quiescent
current concept.
Type
TLE 7270 D
TLE 7270 G
Ordering Code
Q67006-A9670
on request
Package
P-TO252-5-1
P-TO263-5-1
Data Sheet
1 Rev. 1.03, 2004-10-14


Infineon Technologies Electronic Components Datasheet

TLE7270 Datasheet

5-V Low Drop Voltage Regulator

No Preview Available !

TLE 7270
Reset
The Reset pin informs e.g. the microcontroller in case the output voltage has fallen below
the lower threshold VRT of typ. 4.65 V. The hysteresis is typically 100mV. Connecting the
regulator to a battery voltage at first the reset signal remains LOW. When the output
voltage has reached the reset threshold VRT the reset output RO remains still LOW for
the reset delay time trd adjustable in 2 steps via the DT Pin. Afterwards the reset output
turns HIGH.
I1
Bandgap
Reference
TLE 7270
Overtemperature
Shutdown
1
5Q
Reset
Generator
with
Selectable
Timing
2 RO
4 DT
Charge
Pump
3
GND
AEB03520.VSD
Figure 1 Block Diagram
Data Sheet
2 Rev. 1.03, 2004-10-14


Part Number TLE7270
Description 5-V Low Drop Voltage Regulator
Maker Infineon Technologies
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TLE7270 Datasheet PDF






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