TPS7B4250-Q1_15 Datasheet, PDF (1/23 Pages) Texas Instruments – TPS7B4250-Q1 Low-Dropout Voltage-Tracking LDO

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TPS7B4250-Q1
SLVSCA0B – OCTOBER 2013 – REVISED JULY 2015
TPS7B4250-Q1 Low-Dropout Voltage-Tracking LDO
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 3A
– Device CDM ESD Classification Level C6
• –20-V to 45-V Wide, Maximum Input Voltage
Range
• Output Current, 50 mA
• Very-Low Output-Tracking Tolerance,
5 mV (max)
• 150-mV Low Dropout Voltage When
I_OUT = 10 mA
• Combined Reference and Enable Input
• 40-µA Low Quiescent Current at Light Load
• Extreme, Wide ESR Range.
– Stable with 1-µF to 50-µF Ceramic Output
Capacitor, ESR 1 mΩ to 20 Ω
• Reverse Polarity Protection
• Overtemperature Protection
• Output Short-Circuit Proof to Ground and Supply
• SOT-23 Package
2 Applications
• Off-board Sensor Supply
• High-Precision Voltage Tracking
3 Description
The TPS7B4250-Q1 device is a monolithic, integrated
low-dropout voltage tracker. The device is available in
a SOT-23 package. The TPS7B4250-Q1 device is
designed to supply off-board sensors in an
automotive environment. The IC has integrated
protection for overload, over temperature, reverse
polarity, and output short-circuit to the battery and
ground.
A reference voltage applied at the adjust-input pin,
ADJ, regulates supply voltages up to V_IN = 45 V with
high accuracy and loads up to 50 mA.
By setting the adjust/enable input pin, ADJ/EN, to
low, the TPS7B4250-Q1 device switches to standby
mode which reduces the quiescent current to the
minimum value.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7B4250-Q1
SOT-23 (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Output Equal to Reference Voltage
V_bat
V_IN ^TPS7B4250-Q1 VOUT
V_reg
1 µF
2.2 µF
Output Lower than Reference Voltage
V_bat
V_IN ^TPS7B4250-Q1 VOUT
V_reg
1 µF
2.2 µF
ADJ/EN
V_ref
GND
V_ref
ADJ/EN
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.