TLE4275QKVURQ1 Datasheet, PDF (1/22 Pages) Texas Instruments – 5-V LOW-DROPOUT VOLTAGE REGULATOR

TLE4275-Q1
www.ti.com
SLVS647H – AUGUST 2006 – REVISED MARCH 2013
5-V LOW-DROPOUT VOLTAGE REGULATOR
Check for Samples: TLE4275-Q1
FEATURES
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• Qualified for Automotive Applications
• Output Voltage 5 V ± 2%
• Very Low Current Consumption
• Power-On and Undervoltage Reset
• Reset Low-Level Output Voltage < 1 V
• Very Low Dropout Voltage
• Short-Circuit Proof
• Reverse-Polarity Proof
KTT (TO-263-5) Package
(Top View)
KVU (TO-252-5) Package
(Top View)
PWP (HTSSOP) Package
(Top View)
5
OUT
4
DELAY
3
GND
2
RESET
1
IN
5
OUT
4
DELAY
3 GND
2
RESET
1
IN
RESET
1
20
NC
NC
2
19
IN
DELAY
3
18
NC
OUT
4
17
NC
NC
5
Thermal
16
NC
NC
6
Pad
15
NC
NC
7
14
NC
GND
8
13
NC
NC
9
12
NC
NC
10
11
NC
DESCRIPTION
The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. The device
regulates an input voltage up to 45 V to V_OUT = 5 V (typ). The device can drive loads up to 450 mA and is short-
circuit proof. At overtemperature, the incorporated temperature protection turns off the TLE4275. The device
generates a reset signal for an output voltage, V_OUT,rt, of 4.65 V (typ). By the use of an external delay capacitor,
one can program the reset delay time.
The input capacitor, C_IN, compensates for line fluctuation. Using a resistor of approximately 1 Ω in series with C_IN
dampens the oscillation of input inductance and input capacitance. The output capacitor, C_OUT, stabilizes the
regulation circuit. The specification for stability is at C_OUT ≥ 22 μF and ESR ≤ 5 Ω, within the operating
temperature range. Stability for electrolytic capacitors specifically is at C_OUT ≥ 68 µF within the operating
temperature range. See the application report on low-temperature stability, SLVA501, for further details.
The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and
drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents
any oversaturation of the power element. The device also incorporates a number of internal circuits for protection
against:
• Overload
• Overtemperature
• Reverse polarity
ORDERING INFORMATION
For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or see the TI Web site at www.ti.com.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
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necessarily include testing of all parameters.
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