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Texas Instruments TPS728185315DRVT
- Part No.:
- TPS728185315DRVT
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS728185315DRVT.pdf
- Description:
- IC REG LIN 1.85/3.15V 200MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
TPS728185315DRVT from Texas Instruments is a 200mA low-dropout linear regulator with pin-selectable dual-output voltages (1.85V and 3.15V), 230mV typical dropout at full load, ±3% output accuracy over load/line/temperature, and stable operation with 1.0μF ceramic output capacitance. It serves as a power-management IC in portable memory card interfaces requiring dynamic voltage scaling between programming and operational modes.
For engineers reviewing the TPS728185315DRVT datasheet, TPS728185315DRVT pinout, TPS728185315DRVT application, or TPS728185315DRVT equivalent, key selection criteria include dual-voltage toggle timing (<40μs), ultra-low quiescent current (50μA active / 0.1μA shutdown), thermal shutdown at +160°C, PSRR of 65dB at 1kHz, and compatibility with 0.9V–3.6V EEPROM-programmable output ranges.
Technical Context
The TPS728185315DRVT implements a PMOS pass transistor architecture with factory-EEPROM-programmed dual output levels (VOUT1 = 1.85V, VOUT2 = 3.15V), selected via the VSET pin logic threshold (VLO ≤ 0.4V, VHI ≥ 1.2V). Its internal bandgap reference and error amplifier deliver 3% DC accuracy across –40°C to +125°C junction temperature.
It features active pulldown circuitry for fast output discharge during shutdown, undervoltage lockout (UVLO) with 2.51V nominal turn-on and 230mV hysteresis, and thermal protection that disables output above +160°C and re-enables at +140°C. The device operates with input voltage from 2.7V to 6.5V and supports stable regulation down to zero load current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Levels | 1.85V (VSET low) and 3.15V (VSET high); factory-programmed, non-adjustable |
| Max Output Current | 200mA continuous; internally current-limited to 240–575mA depending on conditions |
| Dropout Voltage | 230mV typical at 200mA; enables operation with minimal VIN–VOUT headroom |
| Quiescent Current | 50μA active mode; 0.1μA shutdown mode - critical for battery-powered standby |
| PSRR @ 1kHz | 65dB - suppresses ripple from noisy system rails feeding memory controllers |
| Accuracy | ±3% over full temperature, load, and line range - ensures reliable EEPROM programming margin |
| Startup Time | 160μs to 97% of nominal VOUT - supports fast wake-up in DVS applications |
Pinout & Package
TPS728185315DRVT uses the DRV package: 2mm × 2mm WSON-6 with exposed thermal pad (pin 6). Thermal pad must be connected to GND for thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.7V–6.5V input; requires local 0.1–1.0μF bypass capacitor for transient immunity |
| 2 (GND) | Power ground reference | Common return for IN, OUT, EN, VSET; thermal pad (pin 6) must connect here |
| 3 (EN) | Enable control input | Active-high TTL/CMOS-compatible; <0.4V = shutdown (100nA IQ), >1.2V = active |
| 4 (OUT) | Regulated output | Delivers 1.85V or 3.15V; requires 1.0μF X5R/X7R ceramic capacitor to GND for stability |
| 5 (VSET) | Voltage level select | Drives low (≤0.4V) for 1.85V output, high (≥1.2V) for 3.15V output; no external pull required |
| 6 (Thermal Pad) | Thermal and electrical ground | Exposed copper pad; soldered to PCB GND plane to dissipate heat and reduce θJA by ~45°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Dual-pin-selectable output | VSET toggles between 1.85V (memory operating) and 3.15V (EEPROM programming) without external resistors |
| Ultra-low IQ in active mode | 50μA typical - extends battery life in always-on memory card host devices |
| Fast VSET toggle response | <40μs transition time (1.85V ↔ 3.15V at 1–10mA load) - enables rapid DVS state changes |
| Stable with minimal capacitance | Guaranteed stability with 1.0μF ceramic output cap - reduces BOM count and board area |
| Integrated thermal shutdown | +160°C trip / +140°C reset - protects against sustained overload without external circuitry |
Applications
| SD/MMC Memory Card Interface | Mobile Processor Core Power |
|---|---|
Use Scenario: Supplies regulated voltage to SDHC/SDXC cards during initialization, programming, and read/write cycles. IC Role / Device Role / Timing Role: Dual-voltage LDO providing 3.15V for NAND flash programming and 1.85V for low-power data transfer. Use Value: Eliminates need for discrete switching or second regulator; meets JEDEC JESD84-A44 timing requirements for VCC ramp and level hold. | Use Scenario: Powers CPU I/O or subsystem rails in smartphones where dynamic voltage scaling reduces leakage in 65nm/45nm SoCs. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO delivering 1.85V core voltage during active mode and stepping to 3.15V only during boot/firmware update. Use Value: Achieves >50% reduction in static power vs. fixed 3.15V rail; startup time <160μs satisfies ARM Cortex-A series wake latency specs. |
| eMMC Embedded Storage | Wireless Handset Baseband |
Use Scenario: Regulates power to eMMC 5.1 devices supporting HS400 mode, requiring precise VCCQ switching between 1.8V and 3.3V-equivalent levels. IC Role / Device Role / Timing Role: Pin-configurable LDO generating 1.85V (VCCQ active) and 3.15V (VCCQ programming) under host processor control via GPIO-driven VSET. Use Value: Matches eMMC VCCQ tolerance (±3%) and transition slew rate limits; avoids timing violations during UHS-I mode switching. | Use Scenario: Supplies auxiliary voltage to RF transceiver bias circuits and audio codec I/O in GSM/WCDMA handsets. IC Role / Device Role / Timing Role: Low-PSRR, low-noise LDO decoupling noisy PMIC outputs to ensure clean 1.85V/3.15V for analog front-end stages. Use Value: 65dB PSRR at 1kHz suppresses switching noise from adjacent DC/DC converters; 75×VOUT μVRMS noise preserves SNR in 24-bit audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS728180285YZUT | Same dual-output (1.80V/2.85V), but in YZU WCSP-5 package (1.2mm × 0.8mm); no thermal pad; 85°C/W θJA | Targeted for space-constrained wearables; lacks thermal pad for high-current thermal management | Select when board area <1.0mm² is critical and peak load ≤150mA; verify thermal margin at +85°C ambient |
| TPS728120150DRVT | Different output pair (1.20V/1.50V); identical DRV package, pinout, and electrical specs otherwise | Suitable for low-voltage logic rails (e.g., 1.2V core + 1.5V I/O) rather than memory programming interfaces | Choose only if system requires sub-1.8V dual-rail support; not functionally interchangeable with TPS728185315DRVT |
Compared with TPS728185315DRVT, the YZUT alternative trades thermal performance for miniaturization, while the DRVT variant offers different voltage pairing - neither provides pin-to-pin or functional equivalence for 1.85V/3.15V memory card use cases.
Availability
TPS728185315DRVT is available at Aetrix Electronics and suitable for SD card interface design, eMMC power sequencing, and mobile baseband subsystems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS728185315DRVT 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 over 50 years of innovation in high-reliability IC design.
The TPS728xx series was developed specifically for dynamic voltage scaling in nanoscale memory systems, enabling dual-rail operation without external components while maintaining precision, low noise, and thermal robustness across –40°C to +125°C.
FAQ
What are the exact factory-programmed output voltages for TPS728185315DRVT?
The TPS728185315DRVT is factory-programmed with two precise output voltages: 1.85V when VSET is driven low (≤0.4V), and 3.15V when VSET is driven high (≥1.2V). These values are laser-trimmed during manufacturing and are not adjustable; the part number encoding "185315" directly reflects these nominal voltages.
Does TPS728185315DRVT require an input capacitor for stability?
No, the TPS728185315DRVT does not require an input capacitor for stability, but TI recommends a 0.1μF–1.0μF low-ESR ceramic capacitor near the IN pin to improve transient response and noise rejection. This is especially important when the device is remote from the main power source or subject to fast load transients.
Can TPS728185315DRVT operate with input voltage below 2.7V?
No - the absolute minimum input voltage for TPS728185315DRVT is 2.7V per the datasheet's operating conditions. Below this, UVLO prevents regulation, and the device remains in shutdown. For 1.85V output, VIN must be ≥2.7V (i.e., ≥0.85V headroom); dropout voltage rises significantly below spec limits.
How is thermal management handled on the DRV package of TPS728185315DRVT?
The TPS728185315DRVT in DRV package features an exposed thermal pad (pin 6) that must be soldered to a PCB ground plane. TI specifies RθJA = 65°C/W on high-K board; omitting thermal pad connection degrades θJA by >30°C/W and risks thermal shutdown above 150mW dissipation at +70°C ambient.
Is TPS728185315DRVT compatible with automatic optical inspection (AOI) after reflow?
Yes - the TPS728185315DRVT DRV package (2mm × 2mm WSON-6) has fully exposed top-side markings and coplanar leads suitable for standard AOI systems. Its NIPDAUAG lead finish and Level-1 MSL rating support single-reflow assembly without moisture sensitivity concerns.
TPS728185315DRVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.85V, 3.15V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 120 µA
- PSRR:
- 65dB ~ 40dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS728185315DRVT FAQ
1.How can I place an order for TPS728185315DRVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS728185315DRVT 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 TPS728185315DRVT reliable?
The price and inventory of TPS728185315DRVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS728185315DRVT is usually 5 days.
3.What payment methods are accepted for TPS728185315DRVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS728185315DRVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS728185315DRVT?
TPS728185315DRVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS728185315DRVT 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 TPS728185315DRVT?
For technical support, including TPS728185315DRVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS728185315DRVT requirements.
6.How does Aetrix verify that TPS728185315DRVT is sourced from the original manufacturer or authorized distributors?
All TPS728185315DRVT 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 TPS728185315DRVT meets industry standards.
7.What is the process for return or replacement of TPS728185315DRVT?
All TPS728185315DRVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS728185315DRVT, 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 TPS728185315DRVT part is unused and in its original packaging.
Return procedure for TPS728185315DRVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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