TLE4275-Q1 Datasheet, PDF (1/12 Pages) Texas Instruments – 5-V LOW-DROPOUT VOLTAGE REGULATOR

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FEATURES
• 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
• ESD Protection > 6 kV
TLE4275-Q1
5-V LOW-DROPOUT VOLTAGE REGULATOR
SLVS647 – AUGUST 2006
KTT PACKAGE
(TOP VIEW)
5
OUT
4
DELAY
3
GND
2
RESET
1
IN
DESCRIPTION/ORDERING INFORMATION
The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. An input
voltage up to 45 V is regulated to V_OUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit
proof. At overtemperature, the TLE4275 is turned off by the incorporated temperature protection. A reset signal
is generated for an output voltage, V_OUT,rt, of 4.65 V (typ). The reset delay time can be programmed by the
external delay capacitor.
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 inductivity and input capacitance. The output capacitor, C_OUT, stabilizes the
regulation circuit. Stability is specified at C_OUT ≥ 22 µF and ESR ≤ 5 Ω, within the operating temperature range.
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
T_J
–40°C to 150°C
PACKAGE ⁽¹⁾
TO-263 – KTT
Reel of 500
ORDERABLE PART NUMBER
TLE4275QKTTRQ1
TOP-SIDE MARKING
TLE4275Q1
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
TERMINAL FUNCTIONS
NO.
NAME
DESCRIPTION
1
IN
Input. Connect to ground as close to device as possible, through a ceramic capacitor.
2
RESET Reset output. Open-collector output.
3
GND Ground. Internally connected to heatsink.
4
DELAY Reset delay. Connect to ground with a capacitor to set delay time.
5
OUT Output. Connect to ground with ≥22-µF capacitor, ESR < 5 Ω at 10 kHz.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated