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Texas Instruments TLV74012PDQNR
- Part No.:
- TLV74012PDQNR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
TLV74012PDQNR.pdf
- Description:
- IC REG LIN 1V 300MA 4X2SON
- Quantity:
- Payment:
- Shipping:
Inventory:36,475
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Product details
Overview
TLV74012PDQNR from Texas Instruments is a 300mA, fixed 1.2V output low-dropout linear regulator with foldback current limit, active output discharge, and 1% output accuracy. It operates from 1.4V to 5.5V input, delivers 460mV dropout at full load, and consumes only 50µA quiescent current - optimized for battery-powered portable media players and streaming devices.
For engineers reviewing the TLV74012PDQNR datasheet, TLV74012PDQNR pinout, TLV74012PDQNR application, or TLV74012PDQNR equivalent, key selection criteria include its X2SON-4 package footprint, foldback overcurrent protection behavior, thermal shutdown threshold (158°C), UVLO hysteresis, and compatibility with 1µF ceramic output capacitance for stability.
Technical Context
The TLV74012PDQNR implements a CMOS-based LDO architecture with an integrated foldback-brickwall hybrid current limiter, where brickwall limiting applies above 0.95×VOUT (1.14V) and foldback scaling activates below that threshold. Its enable-controlled active pulldown circuit provides 120Ω discharge resistance to ground when disabled.
It features undervoltage lockout with rising/falling thresholds (1.25V/1.275V typical at 25°C), thermal shutdown with 18°C hysteresis (158°C trip / 140°C reset), and high PSRR of 65dB at 1kHz under 150mA load - all while maintaining ±1% output accuracy across –40°C to +85°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.2V ±1% over temperature and line/load - ensures stable core or I/O rail for low-voltage SoCs. |
| Max output current | 300mA continuous - supports moderate-power peripherals without external heat sinking in compact layouts. |
| Dropout voltage | 460mV at 300mA (VOUT = 1.2V) - enables regulation from 1.66V input, critical for single-cell Li-ion or coin-cell systems. |
| Quiescent current | 50µA typical - extends battery life in always-on or standby modes of portable electronics. |
| PSRR | 65dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Enable threshold | VEN(HI) = 1.0V min, VEN(LO) = 0.4V max - compatible with 1.2V/1.8V GPIOs and supports simple pull-up enable control. |
| Active discharge | 120Ω pulldown resistor - discharges 10µF output cap to <10% VOUT in <1.2ms, preventing backfeed or latch-up in multi-rail systems. |
Pinout & Package
TLV74012PDQNR is packaged in a 1mm × 1mm, 4-pin X2SON (DQN) with exposed thermal pad electrically tied to GND - enabling efficient heat dissipation in space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output | Delivers stable 1.2V; requires ≥1µF ceramic capacitor to ground for stability and transient response. |
| 2: GND | Ground reference & thermal path | Common return for IN/OUT circuits; thermal pad must be soldered to large GND plane for RθJB = 164.6°C/W. |
| 3: EN | Active-high enable | Drives high (>1.0V) to enable regulation; drives low (<0.4V) to disable and activate output discharge. |
| 4: IN | Input supply | Accepts 1.4V–5.5V; requires ≥1µF ceramic capacitor close to pin to minimize impedance and improve transient immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Foldback current limit | Transitions from 360mA brickwall limit above 1.14V to scaled foldback down to 40mA short-circuit current - protects against sustained overload without thermal runaway. |
| Active output discharge | Integrated 120Ω pulldown activated on disable - eliminates need for external bleed resistors and ensures fast, controlled power-down sequencing. |
| UVLO with hysteresis | Rising threshold 1.25V, falling threshold 1.275V - prevents oscillation during brownout and ensures clean startup from weak or decaying sources. |
| Low-noise operation | 65µVRMS output noise (100Hz–100kHz) - suitable for noise-sensitive analog rails like ADC references or RF bias supplies. |
| Thermal shutdown | 158°C trip with 18°C hysteresis - autonomously disables regulator during sustained overload or poor PCB thermal design, then recovers without external intervention. |
Applications
| Portable Media Players | Streaming Media Players |
|---|---|
Use Scenario: Powering audio DAC, display interface, and microcontroller in handheld music/video players with single-cell Li-ion battery. IC Role / Device Role: Primary 1.2V core supply for SoC and peripheral logic, replacing less efficient switching solutions where low noise and small size are critical. Use Value: 50µA IQ extends playback time by >15% vs. comparable LDOs; 460mV dropout enables full 300mA delivery down to 1.66V battery voltage. |
Use Scenario: Regulating 1.2V supply for HDMI PHY, video decoder, and Wi-Fi SoC in compact set-top boxes and dongles. IC Role / Device Role: Low-noise post-regulator cleaning switched DC/DC output, ensuring clean power for high-speed digital interfaces. Use Value: 65dB PSRR at 1kHz attenuates DC/DC ripple before it couples into sensitive video timing paths, reducing jitter and pixel errors. |
| Home Printers | STB and DVR |
Use Scenario: Supplying 1.2V to print controller MCU and sensor interface ICs in low-cost inkjet printers with intermittent duty cycles. IC Role / Device Role: Always-on system rail with enable control synchronized to print job initiation - minimizing standby power loss. Use Value: Active discharge ensures rapid rail collapse between jobs, preventing phantom power draw and meeting ENERGY STAR standby requirements. |
Use Scenario: Providing regulated 1.2V to tuner demodulator, MPEG decoder, and Ethernet PHY in cable/satellite receivers. IC Role / Device Role: Secondary LDO delivering clean, sequenced power to mixed-signal subsystems after main 3.3V/5V rails are established. Use Value: Foldback current limit prevents catastrophic failure during tuner short-circuit faults, improving field reliability without fuse or current-sense overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850F0TESK | 500mA rated, 200mV dropout at 500mA, no active discharge, 2.5V–42V input range | Designed for automotive 12V systems; lacks foldback limit and UVLO optimized for battery inputs | Choose TLS850F0TESK only for 12V automotive environments requiring higher current and wide-input tolerance - not drop-in for TLV74012PDQNR's portable use cases. |
| MCP1703T-1202E/MB | 250mA rated, 600mV dropout at 250mA, 1.2V fixed, no enable or active discharge, SOT-23-3 package | Lacks enable control, foldback, and discharge - simpler but less feature-rich for dynamic power management | Select MCP1703T-1202E/MB for cost-sensitive, static 1.2V rail designs where enable sequencing and fault recovery are unnecessary. |
Compared with TLS850F0TESK and MCP1703T-1202E/MB, TLV74012PDQNR uniquely combines ultra-small X2SON-4 footprint, foldback current limiting, and active discharge - making it optimal for space-constrained, battery-operated systems requiring robust fault handling and fast power-state transitions.
Availability
TLV74012PDQNR is available at Aetrix Electronics and suitable for portable media players, streaming media players, and home printers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TLV74012PDQNR 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 leader specializing in analog, embedded processing, and power management technologies, with decades of LDO design expertise and broad automotive, industrial, and consumer market presence.
The TLV740P series was developed specifically for ultra-low-power, space-constrained portable electronics - emphasizing minimal quiescent current, fast transient response, and integrated protection features like foldback current limit and active discharge.
FAQ
What is the maximum input voltage rating for TLV74012PDQNR?
The absolute maximum input voltage for TLV74012PDQNR is 6.0V, but the recommended operating range is 1.4V to 5.5V. Exceeding 5.5V may trigger internal protection or degrade long-term reliability, even if within absolute ratings. Operation above 5.5V is not supported per TI's Recommended Operating Conditions table.
Does TLV74012PDQNR require an external pull-up resistor on the EN pin?
No - TLV74012PDQNR does not require an external pull-up on EN. The datasheet explicitly states that if enable functionality is unused, EN should be connected directly to IN. An internal pulldown ensures safe default-disable behavior, eliminating need for external components in simple always-on configurations.
Can TLV74012PDQNR operate with a 1µF ceramic output capacitor?
Yes - TLV74012PDQNR is designed for stability with ≥1µF effective ceramic output capacitance (X7R/X5R/C0G dielectrics). The datasheet specifies 1µF as the minimum for stability and recommends placing it as close as possible to the OUT and GND pins to ensure adequate phase margin and transient response.
What is the thermal shutdown behavior of TLV74012PDQNR?
TLV74012PDQNR triggers thermal shutdown at 158°C (typical) and resets at 140°C (typical), providing 18°C hysteresis. During shutdown, the pass transistor turns off and output is actively discharged. If the fault persists, the device cycles between shutdown and restart - a behavior confirmed in Section 6.3.6 of the official datasheet.
Is TLV74012PDQNR pin-compatible with other TLV740P variants?
Yes - all TLV740P variants in the DQN (X2SON-4) package share identical pinout: Pin 1 = OUT, Pin 2 = GND, Pin 3 = EN, Pin 4 = IN. This allows direct substitution across output voltages (1.0V–3.3V) without PCB layout changes, provided input/output capacitors and load requirements remain compatible.
TLV74012PDQNR 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-X2SON (1x1)
TLV74012PDQNR FAQ
1.How can I place an order for TLV74012PDQNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV74012PDQNR 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 TLV74012PDQNR reliable?
The price and inventory of TLV74012PDQNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV74012PDQNR is usually 5 days.
3.What payment methods are accepted for TLV74012PDQNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV74012PDQNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV74012PDQNR?
TLV74012PDQNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV74012PDQNR 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 TLV74012PDQNR?
For technical support, including TLV74012PDQNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV74012PDQNR requirements.
6.How does Aetrix verify that TLV74012PDQNR is sourced from the original manufacturer or authorized distributors?
All TLV74012PDQNR 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 TLV74012PDQNR meets industry standards.
7.What is the process for return or replacement of TLV74012PDQNR?
All TLV74012PDQNR units undergo pre-shipment inspection (PSI). If there is an issue with TLV74012PDQNR, 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 TLV74012PDQNR part is unused and in its original packaging.
Return procedure for TLV74012PDQNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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