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Texas Instruments LP5900TLX-2.65/NOPB
- Part No.:
- LP5900TLX-2.65/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 4-WFBGA, DSBGA
- Datasheet:
-
LP5900TLX-2.65/NOPB.pdf
- Description:
- IC REG LINEAR 2.65V 150MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,044
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Product details
Overview
LP5900TLX-2.65/NOPB from Texas Instruments is a 150-mA ultra-low-noise LDO voltage regulator designed for RF and analog circuits, delivering 2.65 V output with ±2% tolerance, 80 mV typical dropout, 6.5 μVRMS output noise, and 75 dB PSRR at 1 kHz. It operates from 2.5 V to 5.5 V input and requires only 0.47-μF ceramic input/output capacitors-no noise bypass capacitor needed.
For engineers reviewing the LP5900TLX-2.65/NOPB datasheet, LP5900TLX-2.65/NOPB pinout, LP5900TLX-2.65/NOPB application, or LP5900TLX-2.65/NOPB equivalent, key selection criteria include low-noise power for sensitive RF stages, minimal external component count, thermal shutdown behavior, enable control thresholds (VIL = 0.4 V, VIH = 1.2 V), and compatibility with DSBGA-4 (YZR) packaging in space-constrained portable designs.
Technical Context
The LP5900TLX-2.65/NOPB employs an internal low-pass RC filter on its reference voltage path to suppress noise without requiring an external bypass capacitor. Its enable logic includes a 1-MΩ internal pull-down resistor, ensuring default-off operation when EN is floating.
Stability is guaranteed with 0.47-μF ±30% X7R/X5R ceramic capacitors on both input and output, supporting operation across −40°C to +125°C junction temperature. The device features thermal shutdown activation at ~160°C with ~20°C hysteresis and short-circuit current limiting at 300 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.65 V ±2% - ensures precise biasing for RF transceivers and ADC references. |
| Max Output Current | 150 mA - sufficient for powering single RF ICs or analog sensor signal chains. |
| Dropout Voltage | 80 mV typ. at 150 mA - enables high-efficiency regulation even with tight VIN–VOUT margins (e.g., 3.3 V → 2.65 V). |
| Output Noise | 6.5 μVRMS (10 Hz–100 kHz) - meets stringent phase noise requirements in cellular front-ends and PLL supplies. |
| PSRR | 75 dB at 1 kHz - rejects switching noise from adjacent DC/DC converters in mixed-signal systems. |
| Quiescent Current | 25 μA enabled / <1 μA disabled - extends battery life in always-on wireless sensor nodes. |
| Enable Thresholds | VIL ≤ 0.4 V, VIH ≥ 1.2 V - compatible with 1.8-V and 3.3-V GPIO control without level-shifting. |
Pinout & Package
LP5900TLX-2.65/NOPB is packaged in a 4-pin DSBGA (YZR) with 1.108 mm × 1.083 mm body size and exposed thermal pad. The package supports ultra-thin mobile applications and requires PCB thermal vias under the pad for reliable power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (A2) | Input voltage supply | Accepts 2.5–5.5 V; must be decoupled with ≥0.47-μF ceramic capacitor within 1 cm of pin. |
| EN (A1) | Logic-controlled enable | Pulled down internally by 1-MΩ resistor; drives high (>1.2 V) to enable, low (<0.4 V) to disable regulator. |
| GND (B1) | Power ground reference | Common return for input/output paths; connects to PCB ground plane and thermal pad. |
| OUT (B2) | Regulated output | Delivers stable 2.65 V; requires ≥0.47-μF ceramic capacitor with ESR 5–500 mΩ directly at pin. |
| Thermal Pad | Thermal conduction path | Must be soldered to PCB copper area with ≥4 thermal vias to inner ground layers; improves θJA from 177.7°C/W to ~35.6°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| No-bypass-capacitor noise suppression | Internal RC filtering eliminates need for dedicated 10-nF noise capacitor-reduces BOM count and board area. |
| Ultra-low quiescent current | 25 μA active / <1 μA shutdown - enables >1-year battery life in BLE/Wi-Fi IoT endpoints with periodic wake-up. |
| Stable with miniature ceramics | Guaranteed stability using 0.47-μF X7R/X5R caps - avoids larger, costlier tantalum or electrolytic alternatives. |
| Fast enable response | 150 μs turn-on time to 95% VOUT - supports rapid power sequencing in multi-rail RF modules. |
| Robust protection suite | Thermal shutdown (160°C), short-circuit limit (300 mA), and reverse-current blocking - prevents damage during fault conditions. |
Applications
| Cellular Transceiver Power | RF Front-End Biasing |
|---|---|
Use Scenario: Powers LTE/5G transceiver ICs in smartphone mainboards where supply ripple directly impacts EVM and ACLR performance. IC Role / Device Role / Timing Role: Primary low-noise LDO supplying VCC_RF and VCC_SYNTH rails. Use Value: 6.5 μVRMS noise and 75 dB PSRR prevent LO phase noise degradation and maintain >30 dB ACLR margin. | Use Scenario: Supplies bias voltage to GaAs pHEMT amplifiers and RF switches in Wi-Fi 6E access points. IC Role / Device Role / Timing Role: Clean local power source for high-gain RF stages sensitive to supply-induced gain compression. Use Value: 80 mV dropout allows efficient 3.3 V → 2.65 V conversion while maintaining headroom for transient load steps up to 150 mA. |
| Portable Audio Codec Supply | Low-Power Sensor Signal Chain |
Use Scenario: Provides analog supply to stereo audio codecs in Bluetooth headphones, minimizing hiss and crosstalk. IC Role / Device Role / Timing Role: Dedicated LDO for DAC/ADC analog core and reference buffers. Use Value: ±2% output tolerance and <110 mV load transient undershoot ensure THD+N remains <0.005% across volume changes. | Use Scenario: Powers MEMS accelerometers and ultra-low-power ADCs in wearable health monitors. IC Role / Device Role / Timing Role: Always-on regulated supply enabling sub-10 μA system sleep current. Use Value: <1 μA shutdown IQ and fast 150 μs startup allow microsecond-level wake-from-sleep latency without sacrificing battery longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F12-DBVR | Fixed 1.2 V output; 200 mA rating; 50 μVRMS noise; requires 1-μF output cap. | Targeted at digital core rails (e.g., MCU I/O), not RF/analog due to higher noise and lower PSRR (60 dB @ 1 kHz). | Select only if 1.2 V output and higher current are required; not suitable for noise-sensitive analog loads. |
| MCP1700T-2602E/MB | 2.6 V output; 250 mA; 30 μVRMS noise; needs 1-μF ceramic cap; no thermal shutdown. | Designed for general-purpose microcontroller peripherals-not qualified for RF linearity-critical use. | Use where cost is primary constraint and noise/PSRR specs are relaxed; verify thermal management externally. |
Compared with LP5900TLX-2.65/NOPB, TPL720F12-DBVR offers higher current but fails to meet RF-grade noise and PSRR requirements, while MCP1700T-2602E/MB lacks thermal protection and delivers 4.6× higher output noise-making neither a drop-in replacement for analog/RF biasing.
Availability
LP5900TLX-2.65/NOPB is available at Aetrix Electronics and suitable for cellular transceivers, RF front-ends, portable audio codecs, and low-power sensor signal chains requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LP5900TLX-2.65/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 connectivity technologies, with over 90 years of innovation in power management and signal chain solutions.
The LP5900 product line was engineered specifically for noise-sensitive RF and analog subsystems in portable wireless devices, prioritizing ultra-low noise, minimal external components, and robust thermal behavior in ultra-compact packages.
FAQ
What is the minimum input voltage required for LP5900TLX-2.65/NOPB to regulate 2.65 V output?
The LP5900TLX-2.65/NOPB requires a minimum input voltage of 2.5 V to power internal circuitry, but stable regulation at 2.65 V demands VIN ≥ VOUT + VDO. With 80 mV typical dropout, VIN must be ≥2.73 V. At 150 mA load and elevated temperature, dropout rises to 150 mV, so VIN ≥2.80 V is recommended for full-spec operation across temperature.
Can LP5900TLX-2.65/NOPB operate without an output capacitor?
No. LP5900TLX-2.65/NOPB requires a minimum 0.47-μF ceramic output capacitor with ESR between 5 mΩ and 500 mΩ for stability. Operation without COUT causes oscillation and unregulated output. The device remains stable with no load, but the capacitor is mandatory for closed-loop control and transient response integrity.
Does LP5900TLX-2.65/NOPB support reverse current blocking?
Yes. LP5900TLX-2.65/NOPB integrates reverse current blocking, preventing current flow from OUT to IN when VIN falls below VOUT. This protects upstream power sources (e.g., batteries or DC/DC converters) during brownout or shutdown sequences and avoids unintended discharge paths in multi-rail systems.
What is the thermal pad connection requirement for LP5900TLX-2.65/NOPB in the YZR package?
The thermal pad on LP5900TLX-2.65/NOPB (DSBGA-4 YZR) must be soldered to a PCB copper area tied to ground potential. TI recommends ≥4 thermal vias (0.3-mm diameter) connecting the pad to inner ground planes. Floating or non-ground connections risk thermal runaway; connection to any voltage other than GND violates absolute maximum ratings and may cause permanent damage.
How does the enable pin behavior affect system power sequencing in LP5900TLX-2.65/NOPB?
LP5900TLX-2.65/NOPB's EN pin has a 1-MΩ internal pull-down, ensuring default-off state. To sequence power correctly, EN must be driven above 1.2 V after VIN stabilizes. Driving EN before VIN reaches 2.5 V risks delayed start-up (seconds), as the internal POR circuit requires full VIN. For fixed-on operation, tie EN directly to IN-ensuring VIN settles within 500 μs.
LP5900TLX-2.65/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.65V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.15V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- 230 µA
- PSRR:
- 85dB ~ 40dB (100Hz ~ 100kHz)
- 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 (1x1)
LP5900TLX-2.65/NOPB FAQ
1.How can I place an order for LP5900TLX-2.65/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5900TLX-2.65/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 LP5900TLX-2.65/NOPB reliable?
The price and inventory of LP5900TLX-2.65/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5900TLX-2.65/NOPB is usually 5 days.
3.What payment methods are accepted for LP5900TLX-2.65/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5900TLX-2.65/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5900TLX-2.65/NOPB?
LP5900TLX-2.65/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5900TLX-2.65/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 LP5900TLX-2.65/NOPB?
For technical support, including LP5900TLX-2.65/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5900TLX-2.65/NOPB requirements.
6.How does Aetrix verify that LP5900TLX-2.65/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5900TLX-2.65/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 LP5900TLX-2.65/NOPB meets industry standards.
7.What is the process for return or replacement of LP5900TLX-2.65/NOPB?
All LP5900TLX-2.65/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5900TLX-2.65/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 LP5900TLX-2.65/NOPB part is unused and in its original packaging.
Return procedure for LP5900TLX-2.65/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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