TPS7B6933DBVR - 150mA, 40V LDO Regulator, 3.3V Fixed | TI
Teilenummer: TPS7B6933DBVR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.85 | $0,85 |
| 10 | $0.72 | $7,20 |
| 100 | $0.59 | $59,00 |
| 500 | $0.51 | $255,00 |
| 1.000 | $0.45 | $450,00 |
TPS7B6933DBVR Übersicht
A low-dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage drops very close to the output voltage. The TPS7B6933DBVR belongs to the broader hierarchy of linear regulator -> voltage regulator -> power management IC -> semiconductor. The low-Iq advantage places it in the always-on regulator family used to bias standby microcontrollers and metrology sub-systems without draining batteries or violating standby power budgets.
Key features include the wide 4 V to 40 V continuous input window with 45 V transient survivability, a 450-mV dropout at 150 mA, an internal current limit with thermal shutdown, and only 15 µA typical Iq. The SOT-23-5 footprint and 5 µA-grade quiescent current make it suited to compact, thermally constrained boards that need to survive harsh automotive transients and industrial surge events.
The device uses a PNP-pass architecture followed by a precision bandgap reference and an error amplifier that drives the pass element to regulate VOUT. With 15 µA Iq at light loads, internal compensation is employed to reduce external parts; an output capacitor of at least 1 µF with ESR between 0.25 Ω and 5 Ω is required for stability per the manufacturer datasheet.
Typical applications include standby rails in e-meters, fire and smoke alarm sensors, automotive body-control modules, and industrial PLC logic supplies. The 40 V input window also makes it attractive as a post-switching-rail cleanup LDO for 24 V industrial buses.
When designing, ensure VIN - VOUT headroom and dissipation are budgeted. At 24 V input, 3.3 V output, and 100 mA load, the device dissipates about 2.07 W - a SOT-23-5 will require copper-pour heatsinking.
This page integrates verified distributor pricing, drop-in alternatives (same-package, parametrically validated), and practical PCB/thermal design notes not found in the standalone manufacturer datasheet.
Drop-in-Alternativen für TPS7B6933DBVR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit TPS7B6933DBVR (gleiche Bauform und Footprint) – abweichend in Package, MSL Level, Operating Temperature Range, Output Type, Dropout Voltage (Typical).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
TPS7B6933QDBVRQ1
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS7B6933DBVT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS7B6950DBVR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS70950DBVR
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$0.39 / Stück
Datenblatt ansehen →TPS71825-12DRVT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.05 / Stück
Datenblatt ansehen →TLV431ACDBVR
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$0.14 / Stück
Datenblatt ansehen →TPS7B6933DBVR Grenzwerte & elektrische Eigenschaften
| Regulator Type | LDO, Positive Fixed |
| Ausgangstyp | Fixed 3.3 V |
| Input Voltage Range (Continuous) | 4 V to 40 V |
| Input Voltage Range (Transient) | Up to 45 V |
| Maximaler Ausgangsstrom | 150 mA |
| Dropout Voltage (Typical) | 450 mV at 150 mA |
| Quiescent Current (Typical, Light Load) | 15 µA |
| Quiescent Current (Maximum, Full Temp) | 25 µA |
| Betriebstemperaturbereich | -40 °C to +105 °C |
| Gehäuse | SOT-23-5 (DBV) |
| Montageart | Surface Mount |
| Pin-Anzahl | 5 |
| Output Capacitor Requirement | ≥ 1 µF, ESR 0.25 Ω to 5 Ω |
| Protection Features | Short-Circuit Protection, Overcurrent Protection, Thermal Shutdown |
| MSL-Level | Level 1 (per JEDEC J-STD-020) |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
| AEC-Q100 Qualification | Not Qualified (industrial grade; see TPS7B6933QDBVRQ1 for automotive) |
TPS7B6933DBVR Pin-Konfiguration
| Pin 1 | IN — Input voltage (4 V to 40 V continuous, 45 V transient) |
| Pin 2 | GND — Ground reference |
| Pin 3 | EN — Enable input (active-high) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | OUT — Regulated 3.3 V output (up to 150 mA) |
Typische Anwendungen
TPS7B6933DBVR ist geeignet für 7 Anwendungs: Standby Rail for E-Meter / Smart Meter, Always-On Smoke and Fire Detector Bias, Automotive Body and Cluster Standby, Industrial PLC Logic and Sensor Bias, IoT / Always-On Sensor Node, Post-Switching Ripple Cleanup LDO, Power Supply for 24 V Bus Distributed I/O.
Standby Rail for E-Meter / Smart Meter
TPS7B6933DBVR is a strong fit for e-meter standby rails: its 15 µA typical quiescent current drains almost nothing from the meter's battery-backed domain, while the 4 V to 40 V input window accepts 12 V or 24 V utility feeds and 36 V industrial transient spikes without pre-regulation. The 3.3 V fixed output biases the meter's low-power MCU and RTC directly. Recommended companion: a primary 24 V-to-3.3 V switching front end (when main load exists) and a TLV431ACDBVR as auxiliary supervisor reference for the same 3.3 V rail.
Empfohlen
Always-On Smoke and Fire Detector Bias
Smoke and fire alarm sensors need a regulator that draws micro-amps until the alarm is triggered - TPS7B6933DBVR's 15 µA typical Iq extends battery life in ceiling-mounted smoke detectors well past 10 years. The 4 V to 40 V input tolerates rectified 9 V or 24 V system supplies, while the integrated short-circuit and thermal-shutdown protection prevents fire propagation if the output is shorted. Its SOT-23-5 footprint lets the regulator sit next to the MCU on a 25 mm disc PCB.
Empfohlen
Automotive Body and Cluster Standby
Automotive body controllers and instrument clusters require a 3.3 V standby rail that survives load-dump events. TPS7B6933DBVR's 45 V transient survivability lets it sit directly on a 12 V or 24 V battery feed post-clamping; the 450-mV dropout keeps regulation at low cranking voltages. For designs that mandate AEC-Q100, swap to TPS7B6933QDBVRQ1 - same die, same footprint, automotive-qualified.
Empfohlen
Industrial PLC Logic and Sensor Bias
Industrial 24 V PLC digital-input modules and 4-20 mA sensor transmitters need isolated or post-filtered 3.3 V rails. TPS7B6933DBVR offers a low-noise linear 3.3 V from the same 24 V bus, withstanding plant-side surges up to 45 V. Use it as the post-switching cleanup LDO to feed a digital isolator or MCU ADC reference. The 5-pin SOT-23-5 footprint allows placement on the input module's tight 25 mm board edge.
Empfohlen
IoT / Always-On Sensor Node
Battery-powered IoT sensor nodes (smart agriculture, asset tracking, building automation) require months-to-years standby life. TPS7B6933DBVR's 15 µA quiescent current keeps sleep current budget negligible while the wide VIN window accepts solar-charged Li-ion or 6 V lead-acid banks directly. The 3.3 V output is ideal for direct bias of low-power Bluetooth or LoRa transceiver MCUs without an additional regulator stage.
Empfohlen
Post-Switching Ripple Cleanup LDO
When a primary switching converter (e.g., TPS62177DQCT step-down) generates the 3.3 V main rail, TPS7B6933DBVR can be stacked downstream as a low-noise post-regulator for an analog or sensor subsystem that is sensitive to switching ripple. Although typically not as low-noise as a dedicated ultra-low-noise LDO (e.g., TPS7A4701), the TPS7B6933DBVR provides a low-Iq, 150 mA buffer that rejects high-frequency ripple from the upstream buck.
Empfohlen
Power Supply for 24 V Bus Distributed I/O
Distributed I/O modules on a 24 V industrial bus often need a local 3.3 V rail for digital I/O logic that is tolerant to bus transients. TPS7B6933DBVR's 40 V continuous and 45 V transient window lets the part connect directly to the bus after a TVS clamp, eliminating an intermediate switching stage. Each distributed node keeps a small footprint SOT-23-5 LDO locally with sub-25 µA Iq overhead in standby.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für TPS7B6933DBVR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | TPS7B6933QDBVRQ1 | TPS7B6933DBVT | TPS7B6950DBVR | TPS70950DBVR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOT-23-5 (DBV) | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same |
| Output Voltage | 3.3 V fixed | 3.3 V fixed | 3.3 V fixed | 5.0 V fixed | 5.0 V fixed |
| Input Voltage (Continuous) | 4 V to 40 V | 4 V to 40 V | 4 V to 40 V | 4 V to 40 V | 2.7 V to 6.5 V |
| Maximum Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 50 mA |
| Quiescent Current (Typical) | 15 µA | 15 µA | 15 µA | 15 µA | 1 µA |
| Dropout Voltage (Typical) | 450 mV at 150 mA | 450 mV at 150 mA | 450 mV at 150 mA | 450 mV at 150 mA | 245 mV at 50 mA |
| AEC-Q100 Qualified | No | Yes | No | No | No |
Wichtigste Unterscheidungsmerkmale
- Widest VIN window in 150-mA SOT-23-5 LDO class (vs. TPS70950DBVR)
- AEC-Q100 qualification available in same package (vs. TPS7B6933DBVR (industrial))
- Low-Iq integrated protection (vs. TPS71825-12DRVT (dual LDO))
Designhinweise
Layout the input capacitor (≥ 0.1 µF X7R) within 5 mm of the IN pin and the output capacitor (≥ 1 µF X7R, ESR between 0.25 Ω and 5 Ω) within 5 mm of OUT. Ground both capacitors with short traces to the GND pin. The exposed thermal pad (DBV pin layout: tied to GND internally) should be soldered to the board copper pour to keep junction temperature down - even a small (100 mm²) 1 oz copper pour is required at the higher-input 24 V use case.
Estimated: at VIN = 24 V, VOUT = 3.3 V, IOUT = 100 mA, power dissipation is (24 - 3.3) × 0.1 = 2.07 W into a SOT-23-5 with θJA ≈ 200-250 °C/W on small copper. Junction rise would be 400-500 °C above ambient, which exceeds the +105 °C operating ceiling. Reduce to < 30 mA or provide a 600-1000 mm² copper pour; alternatively feed from a pre-regulated 5 V rail to drop worst-case dissipation to 170 mW.
Do not load the OUT capacitor with ESR outside 0.25 Ω to 5 Ω - low-ESR ceramic-only stacks may need a small series resistor or different dielectric per the TI TPS7B69 datasheet stability section. Do not leave EN floating; tie to IN via a 100 kΩ resistor if not actively driven. Avoid reversing IN and OUT during assembly - SOT-23-5 pin order is non-standard across vendor families.
For 24 V industrial-bus applications, place a TVS diode (e.g., SMAJ33CA or 36 V clamp) immediately at the IN pin to absorb transient surges - the device survives 45 V transient but its reliability margin drops at repetition rates above 100 Hz. Keep the TVS return trace short and direct to GND; do not share vias with the load return. This is recommended per common industrial EMC practice even though the TI datasheet does not mandate it.
Compliance-Informationen
RoHS compliant per TI product page and listing on distributors dated 2026-10. Lead-free reflow profile per JEDEC J-STD-020. The standard TPS7B6933DBVR is industrial-grade (Q-temp); the automotive-qualified TPS7B6933QDBVRQ1 is AEC-Q100 Grade 1.