TPS7B8750QDDARQ1 - 500mA 40V AEC-Q100 LDO w/ PG | HSOIC-8
N.º de pieza: TPS7B8750QDDARQ1 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.78 | $2,78 |
| 10 | $2.45 | $24,50 |
| 100 | $2.08 | $208,00 |
| 500 | $1.74 | $870,00 |
| 1.000 | $1.42 | $1.420,00 |
TPS7B8750QDDARQ1 Descripción general
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. LDOs sit within the broader hierarchy of linear regulators, which themselves are a category of voltage regulator ICs inside the wider power management IC (PMIC) semiconductor family. Compared to switching converters, LDOs trade conversion efficiency for ultra-low output noise and simple peripheral requirements, typically needing only input and output ceramic capacitors. The "low-dropout" descriptor refers to the small VIN-to-VOUT differential required to maintain regulation, often below a few hundred millivolts at full current. This makes LDOs ideal for post-regulating the output of a switching converter or for cleaning up a noisy battery rail.
Key specifications of the TPS7B8750QDDARQ1 include a fixed 5.0-V output, 500-mA continuous load capability, a wide 3-V to 40-V operating input range with 40-V absolute maximum, a low quiescent current optimized for always-on body modules, an integrated open-drain PG output with programmable delay or fixed threshold, and AEC-Q100 Grade 1 qualification for harsh automotive environments. The HSOIC-8 PowerPAD package provides an exposed thermal pad that must be soldered to a sufficient copper pour to achieve the rated thermal resistance; otherwise the LDO can enter thermal shutdown prematurely at high VIN-VOUT differential.
Architecturally, the TPS7B8750QDDARQ1 uses a high-side P-channel MOSFET pass element, an internal bandgap reference, an error amplifier, and a PG comparator that monitors VOUT with a defined threshold window. The PG de-asserts during dropout, thermal shutdown, or current-limit events, giving a microcontroller reset or sequencer a clean digital view of rail health. The integrated reverse-current blocking and short-circuit protection make the device robust to the negative-voltage transients defined in ISO 7637-2 load-dump and jump-start test pulses.
Typical applications include automotive body control modules (BCM), instrument cluster supplies, ADAS sensor rails, CAN/LIN transceiver power, and 12-V/24-V industrial battery-powered systems that need to survive load-dump transients. The PG pin can be wired to a microcontroller reset input for rail-sequencing or fault monitoring, while the wide 40-V input directly addresses ISO 7637-2 pulse and 24-V jump-start stress.
When designing with this part, place input and output ceramic capacitors as close as possible to the IC pins to minimize parasitic inductance, and never omit the PowerPAD land pattern. Always verify the PG pull-up rail does not exceed the PG pin's absolute maximum, and confirm worst-case power dissipation at 24-V jump-start versus 12-V cranking. This page synthesizes distributor pricing, drop-in alternatives (same-package TPS7B86xx-Q1 TI variants plus pin-compatible cross-brand equivalents), and practical design notes not found in the TI datasheet alone.
Alternativas directas para TPS7B8750QDDARQ1 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
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TPS7B8650DQDDARQ1
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TPS7B8750QDDARQ1 Valores máximos y características eléctricas
| Manufacturer | Texas Instruments |
| Product Family | TPS7B87-Q1 |
| Regulator Type | LDO (Low-Dropout) Linear Regulator |
| Configuración de salida | Positive, Fixed |
| Tensión de salida | 5.0 V (fixed) |
| Corriente de salida (máx.) | 500 mA |
| Rango de tensión de entrada | 3 V to 40 V |
| Input Voltage Absolute Max | 40 V |
| Salida Power Good | Open-drain, integrated |
| Rango de temperatura de funcionamiento | -40 C to +150 C |
| Automotive Qualification | AEC-Q100 Grade 1 |
| Encapsulado | 8-pin HSOIC PowerPAD (DDA) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| Lead-Free | Yes |
Configuración de pines de TPS7B8750QDDARQ1
| Pin 1 | IN — Input voltage supply (3 V to 40 V) |
| Pin 2 | IN — Input voltage supply (pin 2 typically tied to IN) |
| Pin 3 | EN — Enable input (active-high) |
| Pin 4 | PG — Power-good open-drain output |
| Pin 5 | OUT — Regulated 5.0-V output |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | GND — Ground |
| Pin 8 | NC — Not connected (per datasheet) |
Aplicaciones típicas
TPS7B8750QDDARQ1 es adecuado para 6 aplicacións: Automotive Body Control Module (BCM), ADAS Sensor Power Rail, Industrial 24V Battery-Powered System, Instrument Cluster Power Supply, CAN/LIN Transceiver 5V Rail, Automotive Lighting LED Driver Front-End.
Automotive Body Control Module (BCM)
Why the TPS7B8750QDDARQ1 fits BCM: the 3-V-to-40-V input directly absorbs 12-V cranking dips and 24-V jump-start spikes, while the integrated power-good output gives the BCM MCU a clean reset signal at startup. Circuit role: place the LDO between the battery rail and 5-V logic, with 1-uF ceramic at the input and 10-uF ceramic at the output. Performance note: at 14-V input to 5-V output at 500 mA, dissipation approaches 4.5 W, so the PowerPAD needs at least 1 square inch of copper to stay in regulation under hood at +125 C.
Recomendado
ADAS Sensor Power Rail
Why the TPS7B8750QDDARQ1 fits ADAS: the AEC-Q100 Grade 1 qualification and 72-dB-class PSRR reject upstream switching noise that would otherwise couple into radar/LiDAR signal chains. Circuit role: typically post-regulated from a primary 12-V to 24-V buck converter to a clean 5-V for sensors and SERDES. Performance note: the PG pin can enable a downstream MCU reset on any dropout or fault event, supporting ASIL-B functional safety stacks.
Recomendado
Industrial 24V Battery-Powered System
Why the TPS7B8750QDDARQ1 fits industrial 24V: the 40-V absolute maximum input rides through motor back-EMF and load-dump pulses seen on construction and agricultural equipment. Circuit role: convert the 24-V industrial battery to a clean 5-V supply for sensors, displays, and gateway MCUs. Performance note: thermal dissipation at 36-V input to 5-V at 500 mA is 15.5 W, which mandates the PowerPAD copper and possibly forced-air cooling for continuous full-load operation at high ambient.
Recomendado
Instrument Cluster Power Supply
Why the TPS7B8750QDDARQ1 fits instrument clusters: it provides a clean 5-V rail for backlight drivers, gauge stepper motors, and CAN transceivers while riding through cranking transients. Circuit role: inserted between the ignition-switched 12-V battery rail and the cluster MCU plus display drivers. Performance note: PG output can signal a watchdog MCU to inhibit unsafe cluster states on power loss during cranking events.
Recomendado
CAN/LIN Transceiver 5V Rail
Why the TPS7B8750QDDARQ1 fits CAN/LIN transceivers: the fixed 5-V output matches the VIO supply of standard CAN/LIN transceivers, and the wide input enables direct operation from the 12-V/24-V automotive battery. Circuit role: powers the VCC pin of a CAN or LIN transceiver, providing both in-rush current limiting and reverse-battery protection on the load-dump pulse. Performance note: the integrated PG can flag a microcontroller when the bus rail is healthy, supporting robust network management.
Recomendado
Automotive Lighting LED Driver Front-End
Why the TPS7B8750QDDARQ1 fits lighting front-ends: the 40-V input withstands load-dump and jump-start on the headlamp or tail-lamp harness, while the fixed 5-V output feeds an LED driver controller or constant-current regulator. Circuit role: pre-regulator between the lamp harness and the LED driver, providing PG visibility for the lamp MCU. Performance note: 500-mA continuous output supports multi-channel LED drivers for daytime running lights and turn indicators.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TPS7B8750QDDARQ1 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TPS7B8750QKVURQ1 | TPS7B8650DQDDARQ1 | TPS7B7702QPWPRQ1 |
|---|---|---|---|---|
| Package | HSOIC-8 (DDA PowerPAD) | TO-252 (KVU) - different | HSOIC-8 (DDA PowerPAD) - same | HTSSOP-14 (PWP) - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 5.0 V fixed | 5.0 V fixed | Lower fixed-voltage variant | Dual 5.0 V fixed |
| Output Current | 500 mA | 500 mA | 500 mA | 500 mA per channel |
| Input Voltage Range | 3 V to 40 V | 3 V to 40 V | 3 V to 40 V | 3 V to 40 V |
| Power-Good Output | Yes (open-drain) | Yes (open-drain) | Yes (open-drain) | Yes (open-drain, dual) |
| AEC-Q100 Qualification | Grade 1 (-40 C to +150 C) | Grade 1 | Grade 1 | Grade 1 |
| Channels | 1 | 1 | 1 | 2 |
Diferenciadores clave
- Integrated Power-Good output enables rail sequencing without extra supervisor IC (frente a TPS7A5301RPST)
- HSOIC-8 PowerPAD for direct thermal attachment to ground copper (frente a TPS7B8750QKVURQ1 (TO-252 KVU))
- 40-V continuous input handles 24-V jump-start and load-dump in one device (frente a TPS7B7702QPWPRQ1 (dual 500-mA))
Notas de diseño
Estimated thermal check: at 14-V input, 5-V output, and 500 mA, dissipation is 4.5 W; the HSOIC-8 PowerPAD is rated at ~30 C/W theta_JC on at least 1 sq-in of top-side copper. Without that copper, junction temperature can exceed +150 C and trigger thermal shutdown in under-hood environments. For 24-V jump-start with 500 mA, dissipation jumps to ~9.5 W; forced-air cooling or downgrade to 200 mA is recommended.
Place a 1-uF X7R 50-V ceramic capacitor as close as possible to the IN pin and a 10-uF X7R 10-V ceramic as close as possible to the OUT pin. Use a Star-ground topology with a single GND via stitching pattern under the PowerPAD to reduce ground bounce. Keep noisy traces (CAN, switching nodes) away from the PG pull-up to avoid false de-assertion events during load steps.
Three pitfalls seen in field designs: (1) The PG pull-up voltage must NOT exceed the PG pin's absolute maximum (typically 7 V) - never tie it directly to a 12-V battery rail. (2) The EN pin must be driven above the logic-HIGH threshold before applying VIN above 35 V; otherwise the part may misbehave in start-up. (3) The HSOIC-8 PowerPAD must be soldered - dry-jointed pads lead to thermal runaway under high VIN-VOUT differential.
Información de cumplimiento
AEC-Q100 Grade 1 qualified per the TI datasheet family. RoHS and lead-free per TI product page. Halogen-free and conflict-minerals status should be confirmed through the manufacturer declaration.
