TLE42694GMXUMA2 - 5V 100mA LDO Auto Reg | Infineon
MPN: TLE42694GMXUMA2 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.79 | $1.79 |
| 10 | $1.61 | $16.10 |
| 100 | $1.43 | $143.00 |
| 500 | $1.25 | $625.00 |
| 1,000 | $1.1 | $1,100.00 |
TLE42694GMXUMA2 Overview
An LDO (low-dropout) linear regulator is a member of the linear regulator family inside the broader voltage regulator / power management IC hierarchy. Unlike a switching converter, an LDO burns the excess input-to-output voltage as heat and therefore requires a small dropout margin between VIN and VOUT. Its key engineering value is ultra-clean output, very low quiescent current, and a minimal external BOM β qualities that make LDOs the preferred post-regulator for noise-sensitive rails.
Key features of the TLE42694GMXUMA2 include integrated over-temperature shutdown, output current limitation (short-circuit protection), a reset/watchdog output for microcontroller supervision, and an enable input for power sequencing. According to the manufacturer datasheet, the part is qualified for automotive use, supports an operating junction temperature up to 150 Β°C, and offers very low quiescent current in standby β making it well-suited to always-on ECU rails that must remain alive in key-off conditions.
Architecturally, the regulator uses a PNP pass element topology optimized for low dropout and low Iq. The integrated reset circuit monitors the 5 V output and asserts a reset signal to the host MCU if VOUT falls below a defined threshold β a critical function in automotive microcontrollers where uncontrolled code execution during a brown-out is unacceptable.
Typical applications include automotive body and powertrain ECUs, instrument clusters, HVAC control modules, sensor power, and any 12 V/24 V automotive subsystem that needs a clean, supervised 5 V rail. Industrial PLCs, white-goods control boards, and battery-powered telemetry nodes with wide-input requirements also benefit from this part.
When designing with the TLE42694GMXUMA2, follow Infineon's automotive EMC layout guidelines: place input/output capacitors close to the IC, keep the thermal pad soldered to a sufficient copper pour, and verify reset-timing capacitor selection against your MCU's reset-pulse-width requirement.
This page synthesizes distributor pricing across DigiKey and Mouser, drop-in same-family and cross-brand alternatives, and practical design notes not aggregated on the manufacturer datasheet.
Drop-in alternatives for TLE42694GMXUMA2 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLE42694GMXUMA2 (same form factor and footprint) β differing in Package, RoHS Status, Input Voltage Range, Output Type, Output Voltage.
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Request AlternativesTLE42694GMXUMA2 Maximum Ratings & Electrical Characteristics
| Regulator Type | LDO, Positive Fixed |
| Output Voltage | 5.0 V (fixed) |
| Output Current (datasheet) | 100 mA (continuous) |
| Output Current (family maximum) | 150 mA |
| Input Voltage Range | 5.5 V to 45 V |
| Output Tolerance | Β±2% (typical for family) |
| Operating Temperature Range | -40 Β°C to +150 Β°C (TJ) |
| Reset Output | Integrated (active-low) |
| Enable Input | Yes |
| Protection Features | Short-circuit current limit, Overtemperature shutdown |
| Package | PG-DSO-14 (DSO-14, 14-pin SOIC with thermal pad) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Automotive Qualified | Yes (AEC-Q100, per family datasheet) |
TLE42694GMXUMA2 Pin Configuration
| Pin 1 | VIN β Input voltage supply (5.5 V to 45 V) |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable input |
| Pin 4 | RESET β Reset output (active-low) |
| Pin 5 | RADJ β Reset delay timing capacitor |
| Pin 6 | NC β Not connected |
| Pin 7 | NC β Not connected |
| Pin 8 | VOUT β Regulated 5 V output |
| Pin 9 | VOUT β Regulated 5 V output |
| Pin 10 | NC β Not connected |
| Pin 11 | NC β Not connected |
| Pin 12 | NC β Not connected |
| Pin 13 | NC β Not connected |
| Pin 14 | TAB β Thermal pad / exposed pad (connect to GND) |
Typical Applications
TLE42694GMXUMA2 is suitable for 6 applications: Automotive Body Control Module (BCM) 5V Rail, Instrument Cluster Power Supply, HVAC Control Module 5V Supply, Automotive Sensor Power Supply, Industrial PLC Logic Supply, Battery-Powered Telemetry / Always-On ECU Rails.
Automotive Body Control Module (BCM) 5V Rail
The TLE42694GMXUMA2 fits automotive body control modules because it delivers a clean, supervised 5 V rail from a 12 V or 24 V bus with up to 45 V load-dump tolerance. Its 100 mA continuous output is sufficient to power small MCUs, CAN transceivers, and relay drivers typical in BCM designs. The integrated reset output ensures the host microcontroller starts in a defined state after power-up and during brown-out events. AEC-Q100 qualification and -40 Β°C to +150 Β°C junction temperature support under-hood and cabin ECUs. Compared to discrete resistor-transistor regulators, this part reduces PCB area while improving reliability.
Recommended
Instrument Cluster Power Supply
Instrument clusters require a stable 5 V rail to drive microcontroller logic, LCD/LED backlight drivers, and stepper-motor gauge drivers. The TLE42694GMXUMA2's low quiescent current preserves battery life during key-off standby, while its low-dropout architecture minimizes heat dissipation in the confined dashboard environment. The reset output supervises the cluster MCU during cold-crank voltage dips on the 12 V bus. The PG-DSO-14 package with thermal pad handles moderate dissipation with minimal copper area. This combination makes the TLE42694GMXUMA2 a strong fit for digital instrument clusters and hybrid analog-digital dashboards.
Recommended
HVAC Control Module 5V Supply
HVAC control modules integrate temperature sensors, blower-motor drivers, and a microcontroller on a single PCB that sees wide temperature swings and 12 V bus transients. The TLE42694GMXUMA2 handles the supply side by accepting up to 45 V input and delivering a regulated 5 V output with short-circuit and overtemperature protection. The reset output ensures the HVAC MCU boots cleanly after cold starts or voltage interruptions. Its automotive qualification suits under-dash mounting where ambient temperatures can reach 85 Β°C or higher. The part's small PG-DSO-14 footprint supports compact HVAC module designs.
Recommended
Automotive Sensor Power Supply
Automotive sensors β including oxygen sensors, MAP sensors, and position sensors β require clean, low-noise power to deliver accurate analog or digital outputs to the ECU. The TLE42694GMXUMA2's LDO topology produces a low-noise 5 V rail that does not introduce switching ripple into sensitive analog signal paths. Its 100 mA output can power multiple sensors plus their signal-conditioning circuitry on a shared harness. The wide input range accepts cold-crank and load-dump transients on the 12 V automotive bus. Integrated thermal shutdown and current limit protect against harness faults.
Recommended
Industrial PLC Logic Supply
Industrial PLCs and machine controllers often run on 24 V DC rails with significant noise and transient content. The TLE42694GMXUMA2 accepts up to 45 V input, providing headroom for 24 V bus transients while delivering a clean 5 V rail to logic ICs, optocouplers, and communication transceivers. The integrated reset signal supervises PLC processors during brown-out events, preventing undefined operation. Although primarily automotive-targeted, the part's specifications β wide VIN, integrated protection, and reset β make it a robust choice for industrial control where reliability is paramount. Its operating temperature range suits unconditioned factory environments.
Recommended
Battery-Powered Telemetry / Always-On ECU Rails
Always-on automotive systems β keyless entry, telematics control units, and alarm systems β must maintain a 5 V rail while drawing minimal current from the 12 V battery during vehicle standby. The TLE42694GMXUMA2's low quiescent current minimizes parasitic drain, extending the time a parked vehicle can sit before the battery needs recharging. Its low-dropout architecture continues to regulate when the battery voltage sags during cranking. The reset output is not strictly required for always-on logic, but it adds robustness for the cold-boot sequence. The automotive qualification and wide temperature range suit under-body or trunk-mounted telematics modules.
Recommended
Recommended Products Summary
Engineering reference data for TLE42694GMXUMA2 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE42694GMXUMA1 | TLE4269GMXUMA1 | TLS810A1LDV33XUMA1 |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | PG-DSO-14 | PG-DSO-14 - same | PG-DSO-14 - same | PG-DSO-14 - same |
| Output Voltage | 5.0 V (fixed) | 5.0 V | 5.0 V | 3.3 V |
| Output Current | 100 mA | 100 mA | 150 mA | 250 mA |
| Reset Output | Yes (active-low) | Yes | Yes | No |
| Automotive Qualified | Yes (AEC-Q100) | Yes | Yes | Yes |
Key Differentiators
- Integrated reset output for MCU supervision (vs TLS810A1LDV33XUMA1)
- Wider input voltage range (45 V vs typical 42 V competitors) (vs TLE4269GMXUMA1)
- Automotive grade with full AEC-Q100 qualification (vs Generic 5V LDO regulators)
Design Notes
Estimated: at VIN = 14 V (typical 12 V automotive bus), VOUT = 5 V, and IOUT = 100 mA, power dissipation is approximately (14 - 5) V Γ 0.1 A = 0.9 W. With the PG-DSO-14 thermal pad properly soldered to a 1 square-inch copper pour, theta_JA is approximately 50 Β°C/W, yielding a 45 Β°C junction temperature rise above 85 Β°C ambient. This is well within the 150 Β°C TJ limit. For sustained high-load operation, verify thermal performance in your specific PCB layout.
Place input and output capacitors as close as possible to the IC pins to minimize parasitic inductance. The TLE42694 family datasheet recommends a minimum 1 Β΅F ceramic capacitor on the input and 1 Β΅F to 10 Β΅F on the output. Connect the exposed thermal pad (TAB, pin 14) to a grounded copper pour for optimal heat spreading. Avoid routing noisy digital or switching traces directly under the LDO input capacitor.
Do not exceed the absolute maximum input voltage of 45 V, even briefly β load-dump pulses on automotive buses can exceed this. Add a transient suppressor (TVS) on the input if the application sees extreme transients. The reset output requires an external capacitor on RADJ to set the reset delay β omitting this capacitor or selecting an incorrect value can cause the MCU to enter unintended reset loops. Verify reset timing against your MCU's minimum reset-pulse-width requirement.
Compliance Information
AEC-Q100 qualified per Infineon family datasheet. RoHS compliant. Lead-free. Halogen-free status not explicitly stated in verified web data β set to unknown.
