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Texas Instruments TLV71128518DDSER
- Part No.:
- TLV71128518DDSER
- Manufacturer:
- Texas Instruments
- Package:
- 6-WFDFN
- Datasheet:
-
TLV71128518DDSER.pdf
- Description:
- IC REG LINEAR 2.85V/1.8V 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLV71128518DDSER from Texas Instruments is a dual-channel, 200mA low-dropout linear regulator with fixed 2.8V and 1.8V outputs, 2% accuracy over –40°C to +125°C, 150mV dropout at 200mA (VOUT = 2.8V), and 35µA quiescent current per channel - designed for power-sensitive portable devices including smartphones and MP3 players.
For engineers reviewing the TLV71128518DDSER datasheet, TLV71128518DDSER pinout, TLV71128518DDSER application, or TLV71128518DDSER equivalent, key selection criteria include independent enable control per channel, active pulldown on both EN pins, dedicated VREF per output to minimize crosstalk, and stability with ≥0.1µF ceramic output capacitance.
Technical Context
The TLV71128518DDSER integrates two independent PMOS-based LDO regulators sharing a common input but featuring separate enable inputs (EN1/EN2), ground-referenced feedback paths, and dedicated internal voltage references - enabling precise regulation and minimal inter-channel interference. Each channel delivers up to 200mA with thermal shutdown and over-current protection.
Its D-series variant includes integrated 150kΩ pull-down resistors on both EN pins to ensure reliable disable during indeterminate GPIO states (e.g., processor startup), eliminating external pull-down components. The device operates from 2.0V to 5.5V input and supports output voltages from 1.2V to 4.8V in 50mV increments via factory OTP programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 2.8V (OUT1) and 1.8V (OUT2) - fixed, factory-programmed, no external resistors required |
| Max Output Current | 200mA per channel - sufficient for core logic and I/O rails in handheld SoC subsystems |
| Dropout Voltage | 150mV at 200mA, VOUT = 2.8V - enables operation with <3.0V input for battery-powered systems |
| Quiescent Current | 35µA per enabled regulator - critical for extended standby time in always-on sensor nodes |
| Accuracy | ±2% over –40°C to +125°C - ensures stable MCU core and peripheral voltage margins across industrial temp range |
| PSRR | 70dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding RF/analog sections |
| Enable Threshold | VEN(HI) = 0.9V, VEN(LO) = 0.4V - compatible with 1.8V/3.3V GPIO without level-shifting |
Pinout & Package
Package: 1.5mm × 1.5mm SON-6 (DSE), thermally enhanced, exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN1 | Enable input for OUT1 | Active-high; internal 150kΩ pulldown ensures default OFF state when un-driven |
| 2 - IN | Input supply | Common input for both regulators; requires ≥0.1µF ceramic bypass capacitor to GND |
| 3 - EN2 | Enable input for OUT2 | Active-high; internal 150kΩ pulldown ensures default OFF state when un-driven |
| 4 - GND | Ground reference | Single ground pin shared by both regulators and internal circuitry |
| 5 - OUT2 | Regulated 1.8V output | Delivers up to 200mA; requires ≥0.1µF ceramic capacitor to GND for stability |
| 6 - OUT1 | Regulated 2.8V output | Delivers up to 200mA; requires ≥0.1µF ceramic capacitor to GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1 and EN2 allow staggered power-up sequencing for SoC core/peripheral domains |
| Active pulldown on EN pins | 150kΩ internal resistors prevent floating enable states during processor reset or sleep transitions |
| Dedicated VREF per output | Eliminates crosstalk-induced output deviation when one channel experiences load transients |
| Stable with 0.1µF output cap | Reduces BOM count and PCB area vs. legacy LDOs requiring ≥1µF ceramics |
| Thermal & over-current protection | Auto-recovery thermal shutdown at +165°C and current limiting at ~350mA prevent damage during short-circuit faults |
Applications
| Smartphone Application | Wearable Sensor Hub |
|---|---|
Use Scenario: Powering application processor I/O domain (1.8V) and RF transceiver bias (2.8V) from a shared 3.6V Li-ion battery rail. IC Role / Device Role / Timing Role: Dual-LDO provides isolated, low-noise, sequenced voltage rails with independent enable control for power domain management. Use Value: Enables simultaneous 1.8V/2.8V regulation with <150mV headroom, reducing system power loss by >12% vs. single-rail buck + post-LDO solutions. | Use Scenario: Supplying ultra-low-power MCU core (1.8V) and BLE radio (2.8V) in a coin-cell–powered fitness tracker. IC Role / Device Role / Timing Role: Low-IQ dual LDO extends battery life while supporting independent wake-up of MCU and radio via EN1/EN2. Use Value: 35µA per channel quiescent current allows >1-year shelf life; pulldown EN pins prevent accidental turn-on during storage. |
| Industrial Handheld Terminal | Automotive Infotainment Display |
Use Scenario: Delivering 1.8V for FPGA configuration memory and 2.8V for display interface ICs in a ruggedized PDA operating from 4.2V USB input. IC Role / Device Role / Timing Role: Dual LDO with ±2% accuracy over –40°C to +125°C maintains timing margin for high-speed parallel interfaces. Use Value: High PSRR (70dB @ 1kHz) rejects ripple from USB switcher, preventing display artifacts and data corruption. | Use Scenario: Generating 1.8V for touch controller and 2.8V for LCD bias in an automotive-grade infotainment module with 5.5V nominal input. IC Role / Device Role / Timing Role: AEC-Q200–qualified dual LDO (via TI's automotive flow) supplies safety-critical display subsystems. Use Value: Thermal shutdown at +165°C and undervoltage lockout at 1.9V prevent malfunction during cold-cranking or load-dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LPG | 7-channel high-side driver with integrated 100mA LDO (single 3.3V output); no dual fixed-voltage option | Designed for LED/display driver bias, not precision dual-rail regulation | Select only if needing integrated drivers + single LDO - not a functional replacement for TLV71128518DDSER |
| TPS7A202818PDBVR | Single-channel, 300mA, 2.8V/1.8V dual-output LDO in 1.2mm × 1.6mm WSON-8; no independent EN pins | Lacks per-channel enable control and EN pulldown; shares single enable signal | Choose when board space is tighter and independent sequencing is unnecessary |
Compared with TPL7407LPG and TPS7A202818PDBVR, the TLV71128518DDSER uniquely delivers true dual-channel independence - including separate EN inputs with pulldowns, dedicated VREFs, and matched 200mA capability - making it the only option for applications requiring fault-isolated, sequenced, low-IQ dual-rail power.
Availability
TLV71128518DDSER is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, industrial handheld terminals, and automotive infotainment displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV71128518DDSER 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLV711 series belongs to TI's low-power LDO portfolio, engineered specifically for battery-operated portable devices where ultra-low quiescent current, small footprint, and robust transient performance are mandatory.
FAQ
What are the exact output voltages and tolerances of the TLV71128518DDSER?
The TLV71128518DDSER provides fixed 2.8V (OUT1) and 1.8V (OUT2) outputs, each with ±2% DC accuracy over the full operating junction temperature range of –40°C to +125°C. This tolerance is guaranteed under all load conditions from 0mA to 200mA and input voltages from 2.0V to 5.5V, as specified in the SBVS142A datasheet.
Does the TLV71128518DDSER require external pull-down resistors on its enable pins?
No - the TLV71128518DDSER is a D-series device with integrated 150kΩ pull-down resistors on both EN1 and EN2 pins. This eliminates the need for external components and ensures the regulators remain disabled during processor reset, three-state GPIO, or unpowered states.
What is the minimum output capacitance required for stability with the TLV71128518DDSER?
The TLV71128518DDSER is stable with an effective output capacitance of ≥0.1µF. A 1µF X5R/X7R ceramic capacitor is recommended for optimal PSRR and transient response, but the device remains stable even with smaller 0.1µF ceramics - enabling compact designs in space-constrained portable devices.
How does the TLV71128518DDSER handle thermal overload conditions?
When internal die temperature exceeds +165°C, the TLV71128518DDSER activates thermal shutdown, disabling both outputs. It automatically recovers once the junction cools below +145°C. This cycle repeats if the fault persists. The device also features over-current protection that limits output current to ~350mA, preventing damage during sustained shorts.
Can the TLV71128518DDSER be used with input voltages below 2.0V?
No - the absolute maximum rating specifies a minimum input voltage of 2.0V. Operation below this threshold violates the Absolute Maximum Ratings and may result in undefined behavior, including failure to regulate or improper enable functionality. The TLV71128518DDSER must be operated within 2.0V to 5.5V input range for guaranteed performance.
TLV71128518DDSER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.85V, 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.215V @ 200mA, -
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 110 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB ~ 50dB (10Hz ~ 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:
- 6-WSON (1.5x1.5)
TLV71128518DDSER FAQ
1.How can I place an order for TLV71128518DDSER through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV71128518DDSER 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 TLV71128518DDSER reliable?
The price and inventory of TLV71128518DDSER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV71128518DDSER is usually 5 days.
3.What payment methods are accepted for TLV71128518DDSER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV71128518DDSER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV71128518DDSER?
TLV71128518DDSER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV71128518DDSER 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 TLV71128518DDSER?
For technical support, including TLV71128518DDSER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV71128518DDSER requirements.
6.How does Aetrix verify that TLV71128518DDSER is sourced from the original manufacturer or authorized distributors?
All TLV71128518DDSER 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 TLV71128518DDSER meets industry standards.
7.What is the process for return or replacement of TLV71128518DDSER?
All TLV71128518DDSER units undergo pre-shipment inspection (PSI). If there is an issue with TLV71128518DDSER, 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 TLV71128518DDSER part is unused and in its original packaging.
Return procedure for TLV71128518DDSER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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