TPS74801QDRCRQ1 - 1.5A Low-VIN Automotive LDO | TI
MPN: TPS74801QDRCRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1 | $1.00 |
| 10 | $1 | $10.00 |
| 100 | $1 | $100.00 |
| 500 | $1 | $500.00 |
| 1,000 | $1 | $1,000.00 |
Drop-in alternatives for TPS74801QDRCRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS74801TDRCRQ1
β Drop-Inπ Reference alternative (not in catalog)
TPS74801DRCR
β Drop-Inβ In Stock
$1.05 / Unit
View Datasheet βTPS74401DRCR
β Drop-Inπ Reference alternative (not in catalog)
TPS74901DRCR
β Drop-Inπ Reference alternative (not in catalog)
TPS74801QDRCRQ1 Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable positive |
| Maximum Output Current | 1.5 A |
| Minimum Input Voltage | 0.8 V |
| Output Voltage Range | [DATA_NEEDED: output voltage range] |
| Dropout Voltage | [DATA_NEEDED: dropout voltage] |
| Quiescent Current | [DATA_NEEDED: quiescent current] |
| Power Good Output | Yes |
| Enable Pin | Yes |
| Soft-Start | Programmable via external capacitor |
| Number of Outputs | 1 |
| Package | VSON-10 (DRC) 3x3 mm |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified (Q1) |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
| Regulator Topology | LDO (linear regulator) |
TPS74801QDRCRQ1 Pin Configuration
| Pin 1 | IN β Input supply (0.8 V minimum) |
| Pin 2 | EN β Enable input for power sequencing |
| Pin 3 | SS β Soft-start programming capacitor |
| Pin 4 | PG β Power-good output (open-drain) |
| Pin 5 | FB β Feedback for adjustable output divider |
| Pin 6 | OUT β Regulated output |
| Pin 7 | OUT β Regulated output |
| Pin 8 | GND β Ground |
| Pin 9 | GND β Ground |
| Pin 10 | GND/Pad β Ground / exposed thermal pad |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS74801QDRCRQ1 is suitable for 6 applications: Automotive ADAS Processor Core Power, FPGA I/O and Core Rails, Infotainment and Display Power, Point-of-Load Post-Regulation, Industrial Control and Robotics, Camera and Sensor Module Supplies.
Automotive ADAS Processor Core Power
The TPS74801QDRCRQ1 fits ADAS SoC and microcontroller core rails because its 0.8-V minimum input permits post-regulation of already-low DC-DC outputs, and its 1.5-A rating covers typical core loads. Used after a buck converter, the LDO strips switching ripple without adding noise; the programmable soft-start limits inrush into large core decoupling, and the power-good flag gates downstream sequencing for safe processor power-up.
Recommended
FPGA I/O and Core Rails
FPGAs require tightly regulated, sequenced rails; the TPS74801-Q1 delivers 1.5 A with adjustable output for VCCO/VCCAUX-class supplies. The enable pin allows rail ordering with system sequencing logic, while power-good signals completion to the FPGA configuration controller. Placing the LDO after a switching pre-regulator yields low output ripple; the trade-off is dissipation proportional to VIN-VOUT, so thermal margin must be verified at full load.
Recommended
Infotainment and Display Power
In automotive infotainment head units, the TPS74801QDRCRQ1 post-regulates display, audio, and connectivity supply rails where noise from switching converters degrades performance. Its low-VIN operation suits the 1.0-1.8 V intermediate rails common in these systems, and the compact 3x3 mm DRC package fits dense PCBs behind displays. The power-good output simplifies fault reporting to the body controller via ISO transceivers.
Recommended
Point-of-Load Post-Regulation
Distributed power architectures generate low intermediate buses with buck modules and then post-regulate locally. The TPS74801-Q1 is designed for exactly this: 0.8-V minimum input, adjustable output, and fast transient response for point-of-load rails feeding ASICs and memories. Unlike a second switching stage, the LDO adds no switching noise and needs only small ceramic capacitors; efficiency loss is the price of the cleanest possible rail.
Recommended
Industrial Control and Robotics
Industrial drives and robotics controllers use multiple low-voltage rails for DSPs, gate drivers, and sensing. The TPS74801QDRCRQ1's enable and power-good features integrate into supply-sequencing state machines, and the AEC-Q100 grade provides robustness margins valued in harsh factory environments. Its 1.5-A capacity covers DSP core supplies such as those of C2000-family controllers used in motor control.
Recommended
Camera and Sensor Module Supplies
Automotive camera and radar sensor modules require low-noise analog rails for image sensors and AFEs. The TPS74801-Q1 supplies these rails from low intermediate voltages with the adjustable output set precisely by resistor divider; soft-start prevents voltage overshoot that could stress sensitive sensor inputs. The 3x3 mm package suits the tight board space typical of camera modules mounted behind windshields.
Recommended
Recommended Products Summary
Engineering reference data for TPS74801QDRCRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS74801TDRCRQ1 | TPS74801DRCR | TPS74401DRCR | TPS74901DRCR |
|---|---|---|---|---|---|
| Package | VSON-10 (DRC) 3x3 mm | VSON-10 (DRC) 3x3 mm - same | VSON-10 (DRC) 3x3 mm - same | VSON-10 (DRC) 3x3 mm - same | VSON-10 (DRC) 3x3 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 1.5 A | 1.5 A | 1.5 A | 1.5 A | Higher (family high-current variant) |
| Minimum Input Voltage | 0.8 V | 0.8 V | 0.8 V | [DATA_NEEDED] | [DATA_NEEDED] |
| Automotive Grade (Q1) | Yes (AEC-Q100) | Yes (AEC-Q100) | No | No (EP variant available) | No |
| Power Good | Yes | Yes | Yes | [DATA_NEEDED] | [DATA_NEEDED] |
| Soft-Start | Programmable (SS pin) | Programmable (SS pin) | Programmable (SS pin) | [DATA_NEEDED] | [DATA_NEEDED] |
| Adjustable Output | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Automotive AEC-Q100 qualification in a compact 3x3 mm footprint (vs TPS74801DRCR)
- 35% smaller footprint than the RGW variant (vs TPS74801QRGWRQ1)
- 0.8-V low-VIN operation enables single-stage post-regulation (vs TPS74401DRCR)
Design Notes
At 1.5 A with a large VIN-VOUT differential (e.g., 3.3 V to 1.2 V at 1.5 A = 3.15 W), the 3x3 mm VSON package relies heavily on the exposed thermal pad. Connect the pad to a solid ground plane with a via array (minimum 5x5 grid of thermal vias) per TI datasheet layout guidelines. Calculate junction temperature using theta-JA from the datasheet thermal table for your board stack-up before finalizing the layout.
Place the input and output ceramic capacitors (typically 10 uF class, per datasheet stability requirements) within 2-3 mm of the IN and OUT pins. Keep the FB divider trace short and away from switching-node traces to avoid coupling ripple into the feedback loop, which degrades transient response and output accuracy.
Do not let the input fall below 0.8 V, the TPS74801-Q1 minimum supply, during cold-crank or load-dump transients in automotive systems - verify against your supply's transient profile. Ensure the PG pin has an appropriate pull-up (to a valid rail, not an unpowered one), and size the SS capacitor so inrush current into downstream bulk capacitance stays below the 1.5-A limit.
Compliance Information
AEC-Q100 automotive qualified (Q1 grade per ordering part number). RoHS/lead-free status typical of TI DRC-package LDOs; REACH and halogen details not present in provided data.
