Infineon Technologies TLT807B0EPVXUMA1

Overview

TLT807B0EPVXUMA1 from Infineon is an automotive-grade adjustable low-dropout linear voltage regulator in PG-TSDSO-14 package, delivering up to 70 mA output current with ±2% output voltage accuracy, 36 µA quiescent current, and 42 V max input voltage. It serves as a standby power supply for battery-permanently connected systems in harsh truck and off-road vehicle environments.

For engineers reviewing the TLT807B0EPVXUMA1 datasheet, TLT807B0EPVXUMA1 pinout, TLT807B0EPVXUMA1 application, or TLT807B0EPVXUMA1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, reverse polarity protection, overvoltage tolerance up to 58 V (≤400 ms), and thermal shutdown behavior under sustained overload.

Technical Context

The device implements a bandgap-referenced feedback loop where the ADJ pin senses a resistive divider from the Q output to set regulated voltage; internal pass transistor drive responds to error between ADJ voltage and 1.25 V reference. Regulation remains stable across -40°C to 150°C junction temperature with proper CQ (≥1 µF, ESR ≤4 Ω) and CI decoupling.

Enable logic is active-high with integrated pull-down; EN high enables regulation, EN low disables output and reduces current draw to <1 µA. Protection functions operate autonomously: current limiting activates at ~120 mA (typ), thermal shutdown triggers at ~175°C (junction), and overvoltage clamping engages above 58 V for transient suppression.

Key Specifications

Pinout & Package

TLT807B0EPVXUMA1 uses the PG-TSDSO-14 surface-mount package with exposed thermal pad (EP) for enhanced heat dissipation. Pin 1 is I (input), Pin 4 is EN (active-high enable), Pin 7 is GND, Pin 11 is ADJ (voltage setting node), and Pin 14 is Q (regulated output). Pins 2,3,5,6,8,9,10,12,13 are no-connect.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable LDO regulator applications.

Compared with TLF35584ESV33HTSA1 and MAX17651ATP+, the TLT807B0EPVXUMA1 uniquely balances adjustability, ultra-low IQ, reverse polarity immunity, and full AEC-Q100 Grade 1 compliance - making it optimal for cost-sensitive, battery-critical truck and off-highway applications requiring design-in longevity.

Availability

TLT807B0EPVXUMA1 is available at Aetrix Electronics and suitable for truck ECUs, construction vehicle instrument clusters, and x-EV BMS auxiliary power rails requiring stable component supply across extended automotive lifecycles.

Supply support for TLT807B0EPVXUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and automotive qualification infrastructure.

The OPTIREG™ Linear product line delivers robust, AEC-Q100-qualified voltage regulators optimized for permanent battery connection in commercial vehicles, addressing cold-crank, load-dump, and long-term reliability demands.

FAQ

What is the minimum input voltage required for regulation?

The minimum input voltage is the greater of 4.7 V or V_OUT + V_DR, where V_DR is the dropout voltage. For a 3.3 V output, this ensures regulation initiates above ~4.7 V during cold-crank events, consistent with ISO 16750-2 requirements for 24 V systems.

Can the TLT807B0EPVXUMA1 be used without the ADJ resistor divider?

No - the ADJ pin must be connected to a resistive divider from Q to GND to establish feedback. Leaving ADJ floating or shorting it to GND disables regulation; the device requires the external network to define output voltage and maintain loop stability.

How does the overvoltage protection behave during sustained 58 V exposure?

The 58 V overvoltage protection is rated for ≤400 ms per ISO 7637-2 Pulse 5a. Sustained exposure beyond this duration risks thermal overstress and permanent damage, as protection is intended for transient suppression-not continuous operation.

Is the exposed pad (EP) electrically connected to GND internally?

Yes - the exposed pad is internally tied to GND and must be soldered to a PCB GND plane. This connection provides both low-impedance grounding and thermal conduction to the board, critical for achieving the specified R_thJC = 14 K/W and reliable 150°C junction operation.