TPS7B4250-Q1 Datasheet, PDF (1/17 Pages) Texas Instruments – Low-Dropout Voltage-Tracking LDO

TPS7B4250-Q1
www.ti.com
SLVSCA0A – OCTOBER 2013 – REVISED NOVEMBER 2013
Low-Dropout Voltage-Tracking LDO
Check for Samples: TPS7B4250-Q1
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 H2
– Device CDM ESD Classification Level C4
• –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
• SOT23 Package
APPLICATIONS
• Automotive
• Off-board Sensor Supply
• High-Precision Voltage Tracking
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 VIN = 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.
V_bat
V_IN ^TPS7B4250-Q1 VOUT
V_reg
1 µF
2.2 µF
V_bat
V_IN ^TPS7B4250-Q1 VOUT
V_reg
1 µF
2.2 µF
ADJ/EN
V_ref
GND
V_ref
ADJ/EN
GND
Figure 1. Typical Application Schematic of
TPS7B4250
Figure 2. Output Lower than Reference Voltage
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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 © 2013, Texas Instruments Incorporated