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Texas Instruments LP5904TMX-2.8/NOPB
- Part No.:
- LP5904TMX-2.8/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 4-WFBGA, DSBGA
- Datasheet:
-
LP5904TMX-2.8/NOPB.pdf
- Description:
- IC REG LINEAR 2.8V 200MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,168
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Product details
Overview
LP5904TMX-2.8/NOPB from Texas Instruments is an ultra-low-noise, 200 mA linear regulator optimized for RF/analog circuits, delivering 2.8 V output with ±2% tolerance, 6.5 µVRMS output noise at 200 mA, 78 dB PSRR at 1 kHz, and 95 mV typical dropout - deployed in cellular phones and wireless LAN devices where clean power is critical.
For engineers reviewing the LP5904TMX-2.8/NOPB datasheet, LP5904TMX-2.8/NOPB pinout, LP5904TMX-2.8/NOPB application, or LP5904TMX-2.8/NOPB equivalent, this page provides verified technical context, validated pin functions, confirmed remote capacitor capability, exact DSBGA package dimensions (0.815 mm × 0.815 mm), and real-world selection guidance against alternatives.
Technical Context
The LP5904TMX-2.8/NOPB uses a proprietary low-noise bandgap reference and integrated noise-filtering architecture that eliminates the need for an external bypass capacitor while maintaining 6.5 µVRMS noise performance. Its active pulldown circuit (280 Ω internal resistor from VOUT to GND) ensures rapid output discharge during disable.
Designed for stable operation with only 1.0 µF ceramic input and output capacitors, it supports remote output capacitor placement up to 10 cm from the IC - enabled by robust phase margin control and low-ESR stability across 5–500 mΩ - and operates across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% - ensures precise biasing for RF transceivers and analog signal chains without external feedback. |
| Max Output Current | 200 mA - sufficient to power baseband processors, RF front-end ICs, or high-speed ADCs in portable systems. |
| Output Noise | 6.5 µVRMS (BW: 10 Hz–100 kHz, IOUT = 200 mA) - enables direct powering of sensitive VCOs and LNAs without added filtering. |
| PSRR | 78 dB at 1 kHz - suppresses switching noise from PMICs or DC/DC converters upstream of the LDO. |
| Dropout Voltage | 95 mV typ at 200 mA - allows operation from single-cell Li-ion (3.0 V min) while maintaining regulation down to 2.895 V input. |
| Quiescent Current | 11 µA (enabled), <1 µA (disabled) - extends battery life in always-on sensor or standby RF modules. |
| Enable Threshold | VIH = 1.2 V, VIL = 0.4 V - compatible with 1.8 V and 3.3 V GPIO logic without level-shifting. |
Pinout & Package
LP5904TMX-2.8/NOPB uses a 4-bump, lead-free DSBGA package (YFQ0004AAA), measuring 0.815 mm × 0.815 mm × 0.600 mm, with bottom-side solder balls and no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | VIN | Main input supply pin; requires ≥1.0 µF ceramic capacitor placed ≤1 cm from pin to minimize inductance and ensure transient stability. |
| A2 | VOUT | Regulated 2.8 V output; supports remote capacitor placement (up to 10 cm) due to internal compensation; includes 280 Ω pulldown to GND when disabled. |
| B1 | VEN | Logic-enable input with 1 MΩ internal pulldown; asserts enable at ≥1.2 V, disables at ≤0.4 V; draws <0.001 µA when pulled low. |
| B2 | GND | Common ground reference for VIN, VOUT, and VEN; must connect to low-impedance analog ground plane to preserve PSRR and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| No noise bypass capacitor required | Integrated filter architecture achieves 6.5 µVRMS noise without external CBYPASS, reducing BOM count and PCB area in space-constrained RF modules. |
| Remote output capacitor support | Stable operation with 1.0 µF ceramic cap placed up to 10 cm from VOUT pin - eliminates need for local decoupling near IC, simplifying layout in multi-rail systems. |
| Fast startup time | 85 µs to 95% of 2.8 V - meets timing requirements for burst-mode RF transmission and wake-from-standby sequences. |
| Thermal & short-circuit protection | Internally limits power dissipation and output current (220–450 mA short-circuit limit); shuts down at 150°C junction temp with 15°C hysteresis. |
| Ultra-low quiescent current | 11 µA operating IQ enables >1-year battery life in IoT sensors powered by coin cells or energy harvesters. |
Applications
| Cellular Phone Front-End | Wireless LAN Transceiver Bias |
|---|---|
|
Use Scenario: Powering RF power amplifier (PA) bias rails and LNA stages in 4G/5G handset designs. IC Role / Device Role / Timing Role: Low-noise voltage source for analog RF blocks requiring minimal phase noise contribution. Use Value: 6.5 µVRMS noise and 78 dB PSRR prevent AM-to-PM distortion and adjacent-channel interference in transmit paths. |
Use Scenario: Supplying clean 2.8 V to WLAN SoC analog sections (e.g., DACs, PLLs, receivers) in smartphones and tablets. IC Role / Device Role / Timing Role: Primary post-regulator for noise-sensitive RF subsystems downstream of buck converters. Use Value: Remote capacitor capability allows shared bulk capacitance with main SoC rail, reducing total capacitor count by one per RF domain. |
| PDA Baseband Processor Core | IoT Sensor Node Analog Subsystem |
|
Use Scenario: Delivering regulated 2.8 V to ARM-based baseband processor I/O or memory interface circuits. IC Role / Device Role / Timing Role: Low-dropout supply enabling operation from aging Li-ion batteries (down to 3.0 V). Use Value: 95 mV dropout ensures >200 mA delivery even at end-of-life battery voltages, sustaining full processing throughput. |
Use Scenario: Powering precision analog front-ends (e.g., instrumentation amplifiers, ADC references) in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Always-on, low-IQ regulator maintaining accuracy during long sleep intervals. Use Value: <1 µA shutdown current extends 10-year deployment cycles on primary lithium thionyl chloride cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F12-DBVR | Fixed 1.2 V output; 150 mA max; 4.5 µVRMS noise; requires 0.1 µF output cap; SOT-23-5 package. | Not suitable for 2.8 V systems; smaller footprint but lower current and fixed voltage incompatible with LP5904TMX-2.8/NOPB's target rail. | Select only if system requires 1.2 V and space constraints outweigh current/noise trade-offs. |
| MCP1703T-2802E/MB | 2.8 V output; 250 mA max; 30 µVRMS noise; 65 dB PSRR at 1 kHz; SOT-23-5 package; needs bypass cap. | Higher noise and lower PSRR degrade RF signal integrity; larger package increases board area vs. DSBGA. | Acceptable for cost-sensitive industrial controls where RF performance is non-critical, but not for cellular/WLAN. |
Compared with TPL720F12-DBVR and MCP1703T-2802E/MB, LP5904TMX-2.8/NOPB uniquely combines 2.8 V regulation, 200 mA capability, ultra-low 6.5 µVRMS noise, and DSBGA packaging - making it the only option qualified for noise-limited RF analog supply in miniaturized mobile platforms.
Availability
LP5904TMX-2.8/NOPB is available at Aetrix Electronics and suitable for cellular phone front-end modules, wireless LAN transceiver biasing, and IoT sensor node analog subsystems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LP5904TMX-2.8/NOPB 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 digital signal technologies, with over 50 years of innovation in power management ICs.
The LP5904 series was designed specifically for RF/analog power integrity - targeting noise-sensitive applications like cellular handsets and wireless infrastructure where traditional LDOs introduce unacceptable phase noise or require excessive external components.
FAQ
What is the maximum input voltage rating for LP5904TMX-2.8/NOPB?
The absolute maximum input voltage for LP5904TMX-2.8/NOPB is 6.0 V, but the recommended operating range is 2.2 V to 5.5 V per the datasheet. Exceeding 5.5 V may trigger internal protection or cause permanent damage, especially under sustained conditions or elevated temperatures.
Does LP5904TMX-2.8/NOPB require an external bypass capacitor?
No, LP5904TMX-2.8/NOPB does not require an external noise bypass capacitor - its integrated filter architecture delivers 6.5 µVRMS output noise at 200 mA without one. This is a key differentiator versus conventional LDOs and is explicitly validated in the SNVS637G datasheet.
Can the output capacitor be placed remotely from LP5904TMX-2.8/NOPB?
Yes, LP5904TMX-2.8/NOPB supports remote output capacitor placement up to 10 cm from the VOUT pin, enabled by its internal compensation design. The 1.0 µF ceramic capacitor must still meet ESR (5–500 mΩ) and tolerance (±30%) specs, and PCB traces should minimize inductance (<35 nH).
What is the shutdown current of LP5904TMX-2.8/NOPB when disabled?
When disabled (VEN ≤ 0.4 V), LP5904TMX-2.8/NOPB draws less than 1 µA total supply current - measured as <0.2 µA to 1.0 µA across temperature - enabling ultra-low-power operation in battery-backed or energy-harvesting systems.
Is LP5904TMX-2.8/NOPB compatible with standard reflow profiles?
Yes, LP5904TMX-2.8/NOPB is rated MSL Level-1 (260°C peak reflow, unlimited floor life) with SnAgCu lead finish, fully compliant with IPC/JEDEC J-STD-020D. It supports standard Pb-free reflow profiles without special prebake or moisture sensitivity handling.
LP5904TMX-2.8/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.15V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- 230 µA
- PSRR:
- 88dB ~ 30dB (100Hz ~ 2Mhz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA
LP5904TMX-2.8/NOPB FAQ
1.How can I place an order for LP5904TMX-2.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5904TMX-2.8/NOPB 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 LP5904TMX-2.8/NOPB reliable?
The price and inventory of LP5904TMX-2.8/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5904TMX-2.8/NOPB is usually 5 days.
3.What payment methods are accepted for LP5904TMX-2.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5904TMX-2.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5904TMX-2.8/NOPB?
LP5904TMX-2.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5904TMX-2.8/NOPB 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 LP5904TMX-2.8/NOPB?
For technical support, including LP5904TMX-2.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5904TMX-2.8/NOPB requirements.
6.How does Aetrix verify that LP5904TMX-2.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5904TMX-2.8/NOPB 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 LP5904TMX-2.8/NOPB meets industry standards.
7.What is the process for return or replacement of LP5904TMX-2.8/NOPB?
All LP5904TMX-2.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5904TMX-2.8/NOPB, 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 LP5904TMX-2.8/NOPB part is unused and in its original packaging.
Return procedure for LP5904TMX-2.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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