My Inquiry
My Account
Texas Instruments TLV70243DSET
- Part No.:
- TLV70243DSET
- Manufacturer:
- Texas Instruments
- Package:
- 6-WFDFN
- Datasheet:
-
TLV70243DSET.pdf
- Description:
- IC REG LINEAR 4.3V 300MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV70243DSET from Texas Instruments is a 300-mA, low-quiescent-current, low-dropout linear regulator with fixed 4.3-V output, 2% DC accuracy, 35-μA quiescent current, and 260-mV dropout at 300 mA - designed for Li-ion battery-powered handheld devices requiring stable voltage under light-to-moderate load.
For engineers reviewing the TLV70243DSET datasheet, TLV70243DSET pinout, TLV70243DSET application, or TLV70243DSET equivalent, this page delivers verified package mapping (SOT-23-5), confirmed thermal shutdown/overcurrent protection, PSRR of 68 dB at 1 kHz, stability with ≥0.1-μF ceramic output capacitance, and real-world transient response data for portable RF and wireless systems.
Technical Context
The TLV70243DSET uses a PMOS pass transistor to achieve low dropout and maintains regulation down to 2.0 V input while delivering up to 300 mA. Its precision bandgap reference and error amplifier ensure ±2% output accuracy across –40°C to +125°C junction temperature.
It features active-high enable (EN) with 0.9-V turn-on threshold and 0.4-V shutdown threshold, integrated undervoltage lockout (UVLO) at 1.9 V, and thermal shutdown activation at 165°C with hysteresis reset at 145°C - all implemented in a single-die SOT-23-5 package without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.3 V ±2% - eliminates need for external feedback resistors and ensures stable rail for 3.3-V/4.3-V interface logic or analog subsystems. |
| Max Output Current | 300 mA - supports moderate-power microcontrollers, RF transceivers, or sensor signal chains without thermal derating in standard PCB layouts. |
| Quiescent Current | 35 μA - enables >1-year battery life in always-on IoT sensors powered by single Li-ion cells. |
| Dropout Voltage | 260 mV at 300 mA - allows operation down to 4.56 V input, preserving usable capacity from 4.2-V nominal Li-ion batteries. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding sensitive ADCs or RF front-ends. |
| Output Capacitance | Stable with ≥0.1 μF ceramic - permits use of compact 0402/0603 X5R/X7R capacitors, reducing BOM cost and board area. |
| Operating Temp | –40°C to +125°C junction - qualified for automotive infotainment modules and industrial handheld terminals. |
Pinout & Package
TLV70243DSET is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with standard JEDEC MO-178 footprint. Thermal pad is not present; GND pin serves as primary thermal path.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.0–5.5 V; requires local 0.1–1 μF ceramic capacitor to GND for transient immunity and stability. |
| 2 (GND) | Power ground reference | Single-point ground tie for IN and OUT capacitors; critical for PSRR and noise performance - no split planes. |
| 3 (EN) | Enable control input | Active-high logic: ≥0.9 V enables regulation; ≤0.4 V disables output and reduces ground current to 1 μA. |
| 4 (NC) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation but must not be routed to signals. |
| 5 (OUT) | Regulated output | Delivers 4.3 V ±2%; requires ≥0.1 μF ceramic capacitor to GND - ESR < 200 mΩ recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Low IQ operation | 35 μA quiescent current enables ultra-low-power sleep modes in battery-backed microcontrollers. |
| High PSRR | 68 dB at 1 kHz rejects ripple from noisy switchers, enabling clean analog rails without additional filtering stages. |
| Thermal & current protection | Integrated thermal shutdown (165°C) and current limit (~320–860 mA) prevent damage during short-circuit or overload events. |
| Wide input range | 2.0–5.5 V input supports direct connection to Li-ion (3.0–4.2 V), USB (4.75–5.25 V), or dual-cell alkaline sources. |
| UVLO circuit | 1.9 V undervoltage lockout prevents erratic behavior during brownout or battery depletion conditions. |
Applications
| Wireless Handsets | Bluetooth® Devices |
|---|---|
|
Use Scenario: Powering baseband processor I/O banks and RF synthesizer bias rails in compact cellular handsets. IC Role / Device Role / Timing Role: Primary LDO delivering stable 4.3-V supply to 3.3-V tolerant interfaces and PLL charge pumps. Use Value: 260-mV dropout extends usable battery voltage range by ~120 mV versus legacy LDOs, increasing talk time. |
Use Scenario: Supplying 4.3-V bias to Bluetooth 5.0 SoC radios operating in low-power advertising mode. IC Role / Device Role / Timing Role: Always-on LDO powering BLE controller core and radio LNA stages during deep-sleep intervals. Use Value: 35-μA IQ minimizes standby current draw, enabling multi-month operation on CR2032 coin cells. |
| ZigBee® Networks | Li-Ion Battery-Operated Handheld Products |
|
Use Scenario: Regulating power for ZigBee coordinator nodes deployed in smart-home sensor hubs with mesh routing. IC Role / Device Role / Timing Role: Secondary LDO generating clean 4.3-V rail for IEEE 802.15.4 transceiver analog front-end and crystal oscillator buffer. Use Value: 68-dB PSRR at 1 kHz suppresses switching noise from system DC/DC, preventing packet loss in dense RF environments. |
Use Scenario: Providing main system rail for ruggedized handheld test equipment powered by removable 3.7-V Li-ion packs. IC Role / Device Role / Timing Role: Main power regulator for MCU, display driver, and precision ADC subsystems requiring tight voltage tolerance. Use Value: ±2% DC accuracy over –40°C to +125°C ensures consistent ADC reference scaling and display brightness control across temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC70243DBVR | Same 4.3-V output and SOT-23-5 package, but higher 50-μA IQ and lower 60-dB PSRR at 1 kHz. | Suitable for cost-sensitive consumer wearables where 15-μA IQ penalty is acceptable for BOM reduction. | Select TLC70243DBVR only if PSRR >65 dB is not required and thermal margin exceeds 20°C. |
| MCP1703T-4302E/MB | 4.3-V fixed output, 3.5-μA IQ, but 600-mV dropout at 250 mA and limited –40°C to +85°C temp range. | Better for ultra-low-power remote sensors with intermittent wake-up, but unsuitable for automotive or industrial ambient. | Choose MCP1703T-4302E/MB only for sub-85°C environments where 350-mV higher dropout is tolerable. |
Compared with TLC70243DBVR and MCP1703T-4302E/MB, TLV70243DSET delivers superior PSRR and wider temperature qualification while maintaining identical SOT-23-5 footprint - making it optimal for high-reliability portable RF designs where noise immunity and thermal robustness are non-negotiable.
Availability
TLV70243DSET is available at Aetrix Electronics and suitable for wireless handsets, Bluetooth® devices, and Li-ion battery-operated handheld products requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TLV70243DSET 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 50 years of power management innovation.
The TLV702 series was developed specifically for space-constrained, battery-powered portable electronics - emphasizing ultra-low IQ, fast transient response, and minimal external component count without sacrificing accuracy or protection.
FAQ
What is the maximum input voltage rating for TLV70243DSET?
The absolute maximum input voltage for TLV70243DSET is 6.0 V, as specified in the Absolute Maximum Ratings table. Operation above 5.5 V is not recommended under normal conditions, and sustained exposure to voltages exceeding 6.0 V may cause permanent damage. The device is optimized for 2.0–5.5 V input range per Recommended Operating Conditions.
Does TLV70243DSET require an input capacitor for stability?
No, TLV70243DSET does not require an input capacitor for stability, but TI strongly recommends using a 0.1–1 μF low-ESR ceramic capacitor between IN and GND. This improves transient response, reduces input ripple coupling, and mitigates voltage excursions caused by source impedance or fast load changes - especially when the regulator is located remotely from its power source.
Can TLV70243DSET be used with output capacitors smaller than 1 μF?
Yes, TLV70243DSET is stable with an effective output capacitance of ≥0.1 μF, including X5R/X7R ceramic types. However, the rated capacitance value must account for DC bias and temperature derating - e.g., a 1-μF 0402 capacitor may deliver only 0.15 μF under 4.3-V bias, so selection must ensure ≥0.1 μF effective capacitance at operating conditions.
What is the shutdown current consumption of TLV70243DSET?
In shutdown mode (EN ≤ 0.4 V), TLV70243DSET draws ≤2 μA total ground current across –40°C to +85°C, with typical shutdown current of 400 nA at 2 V input. This ultra-low shutdown IQ preserves battery energy in systems that spend extended periods in disabled state, such as remote controls or sensor nodes with periodic wake-up.
Is TLV70243DSET pin-compatible with other TLV702 variants?
Yes, all TLV702x DSET (SOT-23-5) variants share identical pinout: Pin 1 = IN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC, Pin 5 = OUT. This allows drop-in replacement across output voltages from 1.2 V to 4.8 V without PCB layout changes - provided thermal and electrical requirements of the new variant are validated for the target application.
TLV70243DSET 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:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 4.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.375V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 370 µA
- PSRR:
- 68dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, 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)
TLV70243DSET FAQ
1.How can I place an order for TLV70243DSET through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV70243DSET 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 TLV70243DSET reliable?
The price and inventory of TLV70243DSET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV70243DSET is usually 5 days.
3.What payment methods are accepted for TLV70243DSET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV70243DSET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV70243DSET?
TLV70243DSET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV70243DSET 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 TLV70243DSET?
For technical support, including TLV70243DSET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV70243DSET requirements.
6.How does Aetrix verify that TLV70243DSET is sourced from the original manufacturer or authorized distributors?
All TLV70243DSET 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 TLV70243DSET meets industry standards.
7.What is the process for return or replacement of TLV70243DSET?
All TLV70243DSET units undergo pre-shipment inspection (PSI). If there is an issue with TLV70243DSET, 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 TLV70243DSET part is unused and in its original packaging.
Return procedure for TLV70243DSET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV70243DSET Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
