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Texas Instruments TLV74330PDQNR
- Part No.:
- TLV74330PDQNR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
TLV74330PDQNR.pdf
- Description:
- IC REG LINEAR 3V 300MA 4X2SON
- Quantity:
- Payment:
- Shipping:
Inventory:8,881
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Product details
Overview
TLV74330PDQNR from Texas Instruments is a 300-mA, fixed 3.3-V output low-dropout linear regulator (LDO) in a 4-pin X2SON package. It operates from 1.4 V to 5.5 V input, delivers 1% typical output accuracy, achieves 125 mV dropout at 300 mA, and features active output discharge with a 120-Ω pulldown resistor-ideal for battery-powered portable electronics requiring fast shutdown and low quiescent current.
For engineers reviewing the TLV74330PDQNR datasheet, TLV74330PDQNR pinout, TLV74330PDQNR application, or TLV74330PDQNR equivalent, key selection criteria include its ultra-low IQ (34 µA), stable operation with only 1-µF ceramic output capacitor, foldback overcurrent protection, thermal shutdown (160°C), and enable-controlled sequencing in space-constrained mobile and embedded designs.
Technical Context
The TLV74330PDQNR uses a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking. Its internal bandgap reference, error amplifier, and UVLO circuit ensure regulation stability across –40°C to +125°C junction temperature while maintaining <25 mV load regulation (300 mA, DBV package) and 50 dB PSRR at 1 kHz.
Functional modes include normal regulation, dropout (VIN < VOUT + VDO), and disabled state-triggered by EN < 0.35 V, VIN < 1.25 V (UVLO fall), or TJ > 160°C. During disable, the integrated 120-Ω pulldown rapidly discharges COUT, supporting clean power-rail sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.4% (max) over –40°C to +125°C - ensures stable core/peripheral rail for SoCs and sensors. |
| Max Output Current | 300 mA continuous - supports moderate-power subsystems like camera modules or WLAN ICs. |
| Dropout Voltage | 125 mV at 300 mA (TJ ≤85°C) - enables high-efficiency operation even with tight VIN–VOUT margins (e.g., 3.425 V input). |
| Quiescent Current | 34 µA typical - extends battery life in always-on or low-duty-cycle applications. |
| PSRR | 50 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Enable Threshold | VEN(HI) = 0.9 V min, VEN(LO) = 0.35 V max - compatible with 1.8-V and 3.3-V GPIO logic without level-shifting. |
| Thermal Shutdown | 160°C activation / 140°C reset - provides self-protecting cyclic recovery under sustained overload or poor PCB thermal design. |
Pinout & Package
TLV74330PDQNR is housed in a 1.00 mm × 1.00 mm, 4-pin X2SON (DQN) package with an exposed thermal pad electrically tied to GND. The compact footprint supports high-density layouts in smartphones, wearables, and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output | Delivers stable 3.3 V; requires ≥1-µF ceramic capacitor to GND for stability and transient response. |
| 2 (GND) | Ground reference | Common return path; thermal pad must be soldered to PCB GND plane for optimal thermal performance (RθJB = 164.9°C/W). |
| 3 (EN) | Active-high enable | Drives >0.9 V to enable; <0.35 V to disable; no internal pull-down - external bias required if not controlled by MCU GPIO. |
| 4 (IN) | Input supply | Accepts 1.4–5.5 V; recommended 1-µF ceramic capacitor to GND minimizes input ripple and improves PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with 1-µF ceramic COUT | Eliminates need for larger, costly tantalum or electrolytic capacitors-reducing BOM count and board area. |
| Foldback overcurrent protection | Reduces output current as VOUT collapses (e.g., short-circuit), limiting power dissipation and preventing thermal runaway. |
| Active output discharge | 120-Ω internal pulldown discharges VOUT rapidly on disable-prevents floating rails and ensures deterministic power-down sequencing. |
| Ultra-low quiescent current | 34 µA IQ enables >1-year battery life in coin-cell–powered devices operating at µA-average current. |
| High PSRR at 1 kHz | 50 dB attenuation of DC/DC switching noise allows clean analog/digital supply separation without additional filtering. |
Applications
| Smartphone Power Management | Wearable Sensor Subsystem |
|---|---|
Use Scenario: Supplying 3.3-V I/O rails for image signal processors and touch controllers during active display mode and deep-sleep states. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering stable voltage with fast enable/disable control synchronized to application processor power states. Use Value: 34 µA quiescent current extends standby battery life; 125 mV dropout enables use of partially depleted Li-ion cells (down to ~3.425 V). |
Use Scenario: Powering MEMS accelerometers and environmental sensors in fitness trackers with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Always-on LDO providing regulated 3.3 V during sensor sampling bursts, then rapidly discharged via EN control between measurements. Use Value: Active 120-Ω pulldown reduces VOUT decay time to <1 ms (with 1 µF COUT), eliminating residual voltage that could cause sensor latch-up or false wake events. |
| Industrial IoT Edge Node | USB-C Peripheral Module |
Use Scenario: Generating 3.3-V logic supply for microcontrollers and wireless transceivers in battery- or energy-harvesting–powered gateways. IC Role / Device Role / Timing Role: Input-tolerant LDO accepting wide-range input (e.g., 2.5–5.5 V from buck converter or supercapacitor) while maintaining tight output regulation. Use Value: 1.4 V minimum VIN allows operation directly from single-cell LiFePO₄ (2.5–3.65 V) or two-series NiMH (2.4–2.8 V) without intermediate conversion. |
Use Scenario: Providing isolated 3.3-V supply for USB-C PD controller and Type-C port logic in docking stations or monitors. IC Role / Device Role / Timing Role: Secondary LDO decoupling noisy 5-V USB-C VBUS-derived rails to meet USB-IF EMI and noise requirements for CC logic. Use Value: 50 dB PSRR at 1 kHz suppresses 100-kHz–1-MHz switching artifacts from upstream buck converters, ensuring reliable CC line signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC76033DBVR | 300 mA, 3.3 V, SOT-23-5 package; higher IQ (75 µA); no active discharge; 200 mV dropout at 300 mA. | Lacks pulldown circuit-requires external discharge FET or resistor for sequencing; larger footprint than X2SON. | Select when board space permits SOT-23 and active discharge is unnecessary; verify thermal derating with RθJA = 228.4°C/W. |
| MCP1703-3302E/MB | 250 mA, 3.3 V, SOT-23-3; 4 µA IQ; no enable pin; 600 mV dropout at 250 mA. | Fixed-on operation only; unsuitable for dynamic power gating; higher dropout limits usable input range. | Choose only for always-on, ultra-low-IQ applications where enable control and low dropout are not required. |
Compared with TLC76033DBVR and MCP1703-3302E/MB, TLV74330PDQNR offers superior combination of ultra-small X2SON footprint, active discharge, lowest dropout (125 mV), and balanced IQ (34 µA)-making it optimal for space- and efficiency-critical portable designs requiring precise power sequencing.
Availability
TLV74330PDQNR is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor subsystems, industrial IoT edge nodes, and USB-C peripheral modules requiring stable component supply with full traceability and lifecycle support.
Supply support for TLV74330PDQNR 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 specializing in analog and embedded processing technologies, with leadership in power management ICs for consumer, industrial, and automotive markets.
The TLV743P family was designed to address ultra-low-power, small-footprint LDO needs in portable electronics-emphasizing minimal external components, fast transient response, and robust protection features for battery-sensitive applications.
FAQ
What is the minimum input voltage required for TLV74330PDQNR to regulate 3.3 V output?
The TLV74330PDQNR requires a minimum input voltage of 1.4 V to operate, but to maintain regulation at 3.3 V output, VIN must exceed VOUT + VDO. At 300 mA and TJ ≤85°C, VDO is 125 mV, so minimum functional VIN is 3.425 V. Below this, the device enters dropout mode with reduced transient performance.
Does TLV74330PDQNR require an external pull-down resistor on the EN pin?
No. TLV74330PDQNR has no internal pull-down on the EN pin, but external bias is only needed if the controlling GPIO cannot guarantee a defined low state. When unused, EN may be tied directly to IN for always-on operation-no external resistor is required for basic functionality.
Can TLV74330PDQNR safely drive a 1-µF ceramic output capacitor?
Yes. TLV74330PDQNR is explicitly characterized and stabilized for use with ≥1-µF ceramic output capacitors-no ESR requirements or damping networks needed. This simplifies layout and reduces cost versus older LDOs requiring tantalum or aluminum electrolytics.
What happens to the output when TLV74330PDQNR is disabled via the EN pin?
When TLV74330PDQNR is disabled (EN < 0.35 V), the internal 120-Ω pulldown resistor connects OUT to GND, actively discharging the output capacitor. Discharge time depends on COUT and parallel load resistance; with 1 µF and no load, VOUT falls to <10% in under 1 ms.
Is TLV74330PDQNR suitable for automotive applications?
TLV74330PDQNR is specified for –40°C to +125°C junction temperature and includes thermal shutdown (160°C) and foldback current limiting-features aligned with AEC-Q100 stress testing. However, it is not AEC-Q100 qualified; for automotive use, TI recommends the pin-compatible TLV74333PDBVR (SOT-23) or automotive-grade alternatives.
TLV74330PDQNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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):
- 3V
- 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:
- Current Limit, Thermal Shutdown, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-X2SON (1x1)
TLV74330PDQNR FAQ
1.How can I place an order for TLV74330PDQNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV74330PDQNR 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 TLV74330PDQNR reliable?
The price and inventory of TLV74330PDQNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV74330PDQNR is usually 5 days.
3.What payment methods are accepted for TLV74330PDQNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV74330PDQNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV74330PDQNR?
TLV74330PDQNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV74330PDQNR 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 TLV74330PDQNR?
For technical support, including TLV74330PDQNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV74330PDQNR requirements.
6.How does Aetrix verify that TLV74330PDQNR is sourced from the original manufacturer or authorized distributors?
All TLV74330PDQNR 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 TLV74330PDQNR meets industry standards.
7.What is the process for return or replacement of TLV74330PDQNR?
All TLV74330PDQNR units undergo pre-shipment inspection (PSI). If there is an issue with TLV74330PDQNR, 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 TLV74330PDQNR part is unused and in its original packaging.
Return procedure for TLV74330PDQNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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