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Texas Instruments TLV73328PDBVR
- Part No.:
- TLV73328PDBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV73328PDBVR.pdf
- Description:
- IC REG LINEAR 2.8V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,677
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Product details
Overview
TLV73328PDBVR from Texas Instruments is a capacitor-free, 300-mA, low-dropout linear regulator (LDO) in a 1.0-mm × 1.0-mm X2SON-4 package, delivering 2.8 V output with 1.4% max accuracy, 125 mV dropout at 300 mA (VOUT = 3.3 V), and 34 µA quiescent current. It serves as a primary power rail for ultra-compact battery-powered systems requiring stable, low-noise voltage regulation without external output capacitance.
For engineers reviewing the TLV73328PDBVR datasheet, TLV73328PDBVR pinout, TLV73328PDBVR application, or TLV73328PDBVR equivalent, key selection criteria include capacitor-free stability, active output discharge, foldback overcurrent protection, thermal shutdown behavior, and compatibility with 1.4–5.5 V input sources in space-constrained portable designs.
Technical Context
The TLV73328PDBVR employs a PMOS pass transistor architecture enabling true capacitor-free operation-stable with zero output capacitance while remaining compatible with optional 1-µF ceramic capacitors. Its enable circuitry features asymmetric thresholds: VEN(HI) ≥ 0.9 V (enable) and VEN(LO) ≤ 0.35 V (disable), with no internal pull-down on EN.
It integrates undervoltage lockout (UVLO) with 1.25–1.4 V falling/rising thresholds, foldback current limiting (360–700 mA ILIM, collapsing to ~170 mA short-circuit), and thermal shutdown (160°C trip, 140°C reset). The 120-Ω active pull-down discharges the output during disable, with discharge time dependent on COUT and load resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±1.4% over –40°C to +125°C - ensures consistent biasing for 2.8-V logic, sensors, or RF front-end stages. |
| Max Output Current | 300 mA continuous - supports moderate-power microcontrollers, camera modules, or USB peripherals without thermal derating in DQN package. |
| Dropout Voltage | 125 mV at 300 mA (for VOUT = 3.3 V); for 2.8 V variant: ≤260 mV @ –40°C to +85°C - enables operation from single-cell Li-ion (3.0 V min) with margin. |
| Quiescent Current | 34 µA typical - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| PSRR | 68 dB @ 100 Hz, 35 dB @ 10 kHz - suppresses switching noise from DC/DC converters feeding the LDO input. |
| Enable Thresholds | VEN(HI) ≥ 0.9 V, VEN(LO) ≤ 0.35 V - compatible with 1.8-V and 3.3-V GPIOs without level-shifting. |
| Thermal Shutdown | 160°C trip / 140°C reset - provides robust fault recovery in sealed enclosures or high-ambient environments. |
Pinout & Package
TLV73328PDBVR uses the DQN (X2SON-4) package: 1.0 mm × 1.0 mm, 0.4 mm height, wettable flank terminals, thermal pad electrically connected to GND. Recommended solder paste stencil: 0.12 mm thickness, 0.35 mm × 0.35 mm apertures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output | Delivers 2.8 V; stable with or without external capacitor; connects to load and optional 1-µF ceramic cap. |
| 2: GND | Ground reference | Common return for IN, OUT, and EN; thermal pad must be soldered to PCB ground plane for RθJB = 164.9°C/W. |
| 3: EN | Enable control | Active-high digital input; no internal pull-down; requires external pull-up if floating; drives >0.9 V to enable. |
| 4: IN | Input supply | Accepts 1.4–5.5 V; recommended 100-nF ceramic decoupling to GND near pin; UVLO engages below 1.25 V. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates reliably with zero output capacitance - eliminates BOM cost, board area, and inrush current at startup. |
| Active output discharge | 120-Ω pulldown activated during shutdown - ensures rapid, controlled discharge of output node for sequencing compliance. |
| Foldback overcurrent protection | Current limit reduces as VOUT collapses (e.g., short-circuit → ~170 mA) - limits power dissipation and prevents thermal runaway. |
| Ultra-low quiescent current | 34 µA typical - extends battery life in IoT edge nodes where sleep-mode current dominates energy budget. |
| High PSRR at low frequency | 68 dB @ 100 Hz - effectively filters ripple from buck converter outputs or noisy shared rails. |
Applications
| Smartphone Camera Module | Wearable Heart-Rate Sensor |
|---|---|
Use Scenario: Powers image signal processor (ISP) and CMOS sensor in compact rear-camera assembly with strict height constraints. IC Role / Device Role / Timing Role: Primary 2.8-V analog rail regulator; supplies sensor analog core and ISP I/O banks. Use Value: Capacitor-free operation eliminates 2.2-µF output cap, saving 0.6 mm² board area and avoiding inrush-induced voltage droop during camera activation. |
Use Scenario: Supplies photodiode amplifier and ADC in wrist-worn PPG module operating from coin-cell battery. IC Role / Device Role / Timing Role: Low-noise 2.8-V bias source for transimpedance amplifier; enables <120 µVRMS output noise floor. Use Value: 34 µA IQ extends 3.7-V CR2032 battery life to >12 months in 10-s measurement cycles with 99% sleep duty cycle. |
| USB-C Peripheral Hub | Industrial Bluetooth LE Node |
Use Scenario: Regulates 2.8 V for USB PD controller logic and Type-C port configuration channel (CC) circuitry. IC Role / Device Role / Timing Role: Secondary LDO fed from 5-V USB-C VBUS; enables fast enable/disable during port role swaps. Use Value: 800 µs startup time (VOUT = 3.3 V) and active discharge ensure CC line resets cleanly within USB PD specification timing windows. |
Use Scenario: Powers BLE SoC RF section and crystal oscillator in DIN-rail mounted condition monitor with wide ambient range. IC Role / Device Role / Timing Role: 2.8-V rail for 2.4-GHz transceiver; operates across –40°C to +85°C industrial temperature grade. Use Value: Guaranteed 260 mV dropout at 300 mA up to +85°C allows reliable operation from 3.3-V buck converter even under worst-case thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850F0TESK | 500-mA automotive-grade LDO with integrated watchdog and reset; requires 2.2-µF output cap; 60 µA IQ. | Designed for ASIL-B automotive body electronics; includes safety monitoring not present in TLV73328PDBVR. | Select when functional safety compliance (ISO 26262) and system-level supervision are required; avoid for consumer portables due to higher cost and size. |
| MCP1804T-2802I/OT | 300-mA, 2.8-V fixed LDO in SOT-23-5; 110 µA IQ; requires 1-µF output cap; 350 mV dropout @ 300 mA. | Higher dropout and quiescent current; no active discharge or foldback protection; legacy silicon process. | Choose only for legacy redesigns where X2SON footprint is incompatible; TLV73328PDBVR offers superior efficiency, size, and protection in new designs. |
Compared with TLS850F0TESK and MCP1804T-2802I/OT, TLV73328PDBVR delivers the smallest solution size (no output cap needed), lowest quiescent current, and fastest transient response-making it optimal for next-generation portable and space-constrained industrial devices where BOM count and standby power are critical.
Availability
TLV73328PDBVR is available at Aetrix Electronics and suitable for smartphone camera modules, wearable biosensors, USB-C peripheral hubs, and industrial Bluetooth LE nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TLV73328PDBVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in power management ICs.
The TLV733 series was designed specifically for ultra-compact, battery-powered consumer and industrial applications demanding capacitor-free operation, low IQ, and robust fault protection in sub-1-mm² packages.
FAQ
Does TLV73328PDBVR require an output capacitor to operate?
No, TLV73328PDBVR is architecturally stable with zero output capacitance due to its capacitor-free internal compensation. This eliminates inrush current and saves PCB area. However, adding a 1-µF ceramic capacitor improves load transient response and reduces output noise-especially beneficial in noise-sensitive analog circuits powered by TLV73328PDBVR.
What is the maximum input voltage for TLV73328PDBVR?
The absolute maximum input voltage for TLV73328PDBVR is 6.0 V, but the recommended operating range is 1.4 V to 5.5 V. Operation above 5.5 V risks permanent damage. For reliable 2.8-V regulation, VIN must exceed 2.8 V plus dropout (≤260 mV at 300 mA, +85°C), so minimum practical VIN is ~3.06 V.
How does the enable pin (EN) function on TLV73328PDBVR?
TLV73328PDBVR features an active-high EN pin: drive >0.9 V to enable regulation; drive <0.35 V to disable. There is no internal pull-down, so EN must be actively driven or externally pulled up. During disable, the 120-Ω active pulldown discharges the output-discharge time depends on COUT and load resistance per τ = (120 Ω ∥ RL) × COUT.
Can TLV73328PDBVR be used in automotive applications?
TLV73328PDBVR is rated for –40°C to +125°C junction temperature and meets AEC-Q200 stress test requirements for temperature cycling and HBM ESD (±2000 V), but it is not officially qualified to AEC-Q100. For production automotive ECUs, TI recommends automotive-grade alternatives like TLV73328QDBVRQ1. TLV73328PDBVR is suitable for non-safety-critical automotive accessories or prototyping.
What thermal performance can be expected from TLV73328PDBVR in the X2SON-4 package?
In the DQN (X2SON-4) package, TLV73328PDBVR has RθJA = 218.6°C/W (JEDEC high-K board) and RθJB = 164.9°C/W. With proper thermal pad soldering to a 1-in² 1-oz copper pour, it sustains 300 mA at +85°C ambient when VIN = 3.8 V (ΔV = 1.0 V). Derating is required above 100°C junction temperature; maximum continuous IOUT drops to ~220 mA at +125°C ambient.
TLV73328PDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.29V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 68dB ~ 28dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV73328PDBVR FAQ
1.How can I place an order for TLV73328PDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV73328PDBVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLV73328PDBVR reliable?
The price and inventory of TLV73328PDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV73328PDBVR is usually 5 days.
3.What payment methods are accepted for TLV73328PDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV73328PDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV73328PDBVR?
TLV73328PDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV73328PDBVR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLV73328PDBVR?
For technical support, including TLV73328PDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV73328PDBVR requirements.
6.How does Aetrix verify that TLV73328PDBVR is sourced from the original manufacturer or authorized distributors?
All TLV73328PDBVR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLV73328PDBVR meets industry standards.
7.What is the process for return or replacement of TLV73328PDBVR?
All TLV73328PDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV73328PDBVR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLV73328PDBVR part is unused and in its original packaging.
Return procedure for TLV73328PDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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