TPS76930DBVR - 100mA 3V Fixed LDO Regulator SOT-23-5 | Texas Instruments
Référence : TPS76930DBVR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.1 | $1,10 |
| 10 | $0.95 | $9,50 |
| 100 | $0.78 | $78,00 |
| 500 | $0.62 | $310,00 |
| 1 000 | $0.48 | $480,00 |
TPS76930DBVR Présentation
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. Within the broader taxonomy, an LDO is a linear regulator, which is a voltage regulator, which is a power management integrated circuit, which is a semiconductor. LDOs are preferred over switching regulators when low noise, small solution size, and simplicity outweigh efficiency concerns.
Key features include 17 uA typical quiescent current, 1 uA quiescent current in standby mode, integrated enable pin, internal current limit, and thermal shutdown protection. The PMOS pass element architecture eliminates the base-current loss typical of older PNP LDOs, contributing to its ultra-low quiescent current specification and improving light-load efficiency in battery-powered applications.
The TPS76930DBVR uses a PMOS pass transistor instead of the conventional PNP pass element, which eliminates base-current loss and enables the ultra-low quiescent current. With only 17 uA quiescent current in regulation and 1 uA in standby, this device is well suited for always-on subsystems where total quiescent draw dominates battery life.
Typical applications include battery-powered portable equipment such as wireless sensors, remote controls, and handheld instruments, microcontroller power rails for low-power MCUs, and standby power rails for microcontrollers and real-time clocks (RTCs). The wide input range also supports industrial 24V systems via pre-regulation.
When designing with this device, ensure input and output capacitors are placed as close as possible to the IC pins. The enable pin allows the regulator to be placed in 1 uA standby mode when the system is idle, which is critical for battery-life calculations in always-on systems.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop decision view for low-Iq LDO selection.
Alternatives de remplacement direct pour TPS76930DBVR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec TPS76930DBVR (même facteur de forme et même empreinte) — différant par MSL Level, Operating Temperature Range, Package, Current Limit, Enable Pin.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TPS76930DBVT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS76933DBVR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS76950DBVR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS70950DBVR
✅ Remplacement direct✓ En stock
$0.39 / unité
Voir la fiche technique →TPS3106K33DBVR
✅ Remplacement direct✓ En stock
$0.62 / unité
Voir la fiche technique →TPS76930DBVR Valeurs maximales et caractéristiques électriques
| Type de sortie | Fixed |
| Tension de sortie | 3.0 V |
| Courant de sortie maximal | 100 mA |
| Plage de tension d'entrée | 2.7 V to 10 V |
| Tension de déchet | 115 mV typical at 100 mA |
| Courant de repos | 17 uA typical (active), 1 uA (standby) |
| Plage de température de fonctionnement | -40C to +125C (junction) |
| Boîtier | SOT-23-5 (DBV) 2.9 x 1.6 mm |
| Type de montage | Surface Mount |
| Pass Element | PMOS |
| Broche d'activation | Yes (active-high) |
| Limitation de courant | Internal current limit |
| Thermal Protection | Thermal shutdown |
| Niveau MSL | 1 |
| Statut RoHS | Compliant |
Configuration des broches de TPS76930DBVR
| Broche 1 | IN — Input supply voltage (2.7V to 10V) |
| Broche 2 | GND — Ground |
| Broche 3 | EN — Enable (active-high; pull low for 1 uA standby) |
| Broche 4 | NC — Not connected (must be left floating per datasheet) |
| Broche 5 | OUT — Regulated output voltage (3.0V fixed) |
Applications typiques
TPS76930DBVR convient pour 6 applications: Battery-Powered IoT Sensor Nodes, Microcontroller Power Rail (3.0V Logic), Standby Power Rail for RTC and Memory, Remote Controls and Wireless Key Fobs, Industrial Sensor Signal Conditioning, USB-Powered Low-Current Peripherals.
Battery-Powered IoT Sensor Nodes
The TPS76930DBVR is well-suited for battery-powered IoT sensor nodes where years of shelf life are required. Its 1 uA standby quiescent current (per TI datasheet) allows CR2032-powered wireless sensor nodes to remain connected for years without battery replacement. The PMOS pass element and 115 mV dropout voltage maximize usable battery capacity when the cell voltage sags toward end-of-life. With 100 mA peak current capability, the part can briefly support radio transmit bursts; for sustained higher loads, an additional boost or buck stage may be needed. The fixed 3.0V output conveniently powers low-voltage MCUs and 2.4 GHz radios directly from a single Li-Ion cell after the cell voltage drops below the regulator's minimum headroom.
Recommandé
Microcontroller Power Rail (3.0V Logic)
For 3.0V logic MCUs, the TPS76930DBVR provides a clean fixed rail with 17 uA quiescent current that is negligible compared to the MCU's active current. The SOT-23-5 footprint drops onto the same PCB land pattern as the MCU's bypass caps, enabling compact designs. Its 100 mA current capability covers most low-power MCU + radio combinations; thermal shutdown protects the regulator if the load exceeds safe limits. The enable pin allows software-controlled power gating, putting the regulator into 1 uA standby when the MCU is in deep-sleep. Compared to a discrete zener + BJT regulator, the TPS76930DBVR offers tighter output tolerance, lower dropout, and built-in current limit.
Recommandé
Standby Power Rail for RTC and Memory
The TPS76930DBVR's 1 uA standby quiescent current makes it ideal for always-on rails powering real-time clocks, SRAM backup, and other always-on subsystems in mains-powered equipment. Drawing only 1 uA from a coin-cell backup during power outages preserves battery capacity for years. With 100 mA peak capability, the same regulator can also briefly support full-system wake-up from standby. The wide 2.7V to 10V input range allows direct connection to either a 3.3V or 5V system bus without pre-regulation. The PMOS architecture eliminates the reverse-current path that plagues older PNP LDOs, protecting the backup battery from discharge through the regulator body diode.
Recommandé
Remote Controls and Wireless Key Fobs
For remote controls, key fobs, and other click-only battery-powered devices, the TPS76930DBVR offers the right balance of low cost, low Iq, and adequate peak current. Its 1 uA standby current preserves CR2032 battery capacity over the device's 5 to 10 year shelf life; the 17 uA active Iq is negligible compared to the RF transmit burst. The 100 mA peak capability covers most sub-1 GHz and 2.4 GHz radio transmit currents directly without a separate boost converter. The fixed 3.0V output conveniently matches low-voltage radio and MCU rails directly from a single Li-Ion or 2x AA cell. Its SOT-23-5 footprint minimizes PCB area in space-constrained handheld enclosures.
Recommandé
Industrial Sensor Signal Conditioning
In industrial 4 mA to 20 mA loop-powered sensor transmitters, the TPS76930DBVR can serve as a post-regulator after loop compliance to provide a clean 3.0V rail for the sensor and ADC. Its wide 2.7V to 10V input range accepts the loop compliance voltage directly, and the 115 mV dropout maximizes headroom for the rest of the signal chain. The PMOS pass element eliminates the base-current loss of older PNP LDOs that would otherwise consume significant loop current. With 17 uA quiescent current, the part contributes minimally to the 4 mA loop baseline, preserving measurement accuracy. The -40C to +125C junction temperature range supports harsh industrial environments.
Recommandé
USB-Powered Low-Current Peripherals
For low-current USB peripherals such as HID devices, LED indicators, and low-speed data loggers, the TPS76930DBVR can step down the USB 5V rail to 3.0V with only 115 mV dropout. The 100 mA current capability is well below the USB 500 mA budget, leaving ample margin for the rest of the system. The PMOS architecture eliminates the inrush current spike typical of older PNP LDOs during hot-plug events, improving USB connector reliability. With 17 uA quiescent current, the part adds minimal load to the USB suspend current budget (500 uA for USB 2.0). The fixed 3.0V output is convenient for low-voltage MCUs and LED drivers that prefer a regulated 3.0V rail over the variable USB voltage.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TPS76930DBVR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TPS76930DBVT | TPS76933DBVR | TPS76950DBVR | TPS70950DBVR |
|---|---|---|---|---|---|
| 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 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 3.0 V | 3.0 V | 3.3 V | 5.0 V | 5.0 V |
| Maximum Output Current | 100 mA | 100 mA | 100 mA | 100 mA | 50 mA |
| Input Voltage Range | 2.7 V to 10 V | 2.7 V to 10 V | 2.7 V to 10 V | 2.7 V to 10 V | 2.7 V to 30 V |
| Quiescent Current (Active) | 17 uA | 17 uA | 17 uA | 17 uA | 1 uA |
| Standby Quiescent Current | 1 uA | 1 uA | 1 uA | 1 uA | 1 uA |
| Enable Pin | Yes (active-high) | Yes (active-high) | Yes (active-high) | Yes (active-high) | Yes (active-high) |
| Dropout Voltage at Full Load | 115 mV at 100 mA | 115 mV at 100 mA | 115 mV at 100 mA | 115 mV at 100 mA | 690 mV at 50 mA |
Principaux différenciateurs
- Ultra-low 1 uA standby quiescent current extends battery shelf life (vs TPS76933DBVR (same family, 3.3V output))
- Same SOT-23-5 footprint as TPS709 family for layout reuse (vs TPS70950DBVR (Site MPN with XAIPART coverage))
- PMOS pass element eliminates base-current loss (vs Older PNP-based LDOs (e.g., LM1117))
Notes de conception
The TPS76930DBVR requires an input capacitor and output capacitor for stability. Per the TI TPS769 datasheet, place a 1 uF to 10 uF ceramic capacitor on the IN pin and a 1 uF to 10 uF ceramic capacitor on the OUT pin, both as close to the IC as possible. ESR should be below 1 ohm for stable operation. Using capacitors below 1 uF may cause oscillation; using capacitors above 10 uF improves transient response but increases inrush current at startup.
At VIN=5V, VOUT=3.0V, and 100 mA load, the TPS76930DBVR dissipates approximately 0.2W. Estimated: using the SOT-23-5 thermal resistance of approximately 230 C/W with minimal copper pour, the junction temperature would rise 46 C above ambient. For a 25 C ambient, junction reaches 71 C - well within the 125 C limit. However, at VIN=10V, VOUT=3.0V, 100 mA, dissipation rises to 0.7W and junction rises 161 C above ambient, requiring substantial copper pour or operation below full load.
Do not leave the NC pin (pin 4) connected to ground or any signal - per TI TPS769 datasheet, this pin must be left floating. Connecting NC to ground can cause internal latch-up or abnormal quiescent current. Do not reverse the input and output voltages - the IC lacks reverse-current protection and reverse voltage will damage the PMOS pass element. Do not exceed 10V on IN; the absolute maximum rating is 11V (per datasheet) with no margin for transients.
Per TI TPS769 datasheet layout guidelines, place input and output capacitors on the same side of the PCB as the IC, with traces as short and wide as possible. Keep the ground plane intact under the IC and capacitors to provide low-impedance return paths. Avoid routing digital signal traces under the regulator to prevent noise coupling into the analog rail. The exposed thermal pad (none on SOT-23-5) is not applicable, but a copper pour connected to GND on the top layer helps dissipate heat.
The TPS76930DBVR's PMOS pass element architecture provides excellent power supply rejection ratio (PSRR) but no specific dB value is published in the datasheet excerpt. Estimated: typical PSRR for this LDO family is 50 dB to 60 dB at 1 kHz. For noise-sensitive analog applications (audio, precision ADC references), add an LC pi-filter (10 uF + ferrite + 10 uF) on the output to attenuate broadband switching noise from upstream regulators.
Informations de conformité
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified - choose TPS769xx-Q1 variants for automotive. Lead-free and halogen-free per TI material declaration.
