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Texas Instruments LP5900TLX-2.6/NOPB
- Part No.:
- LP5900TLX-2.6/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 4-WFBGA, DSBGA
- Datasheet:
-
LP5900TLX-2.6/NOPB.pdf
- Description:
- IC REG LINEAR 2.6V 150MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,072
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Product details
Overview
LP5900TLX-2.6/NOPB from Texas Instruments is a 150-mA ultra-low-noise LDO regulator designed for RF and analog circuits, delivering 2.6 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 supports stable regulation with only 0.47-μF ceramic input/output capacitors-no noise bypass capacitor required.
For engineers reviewing the LP5900TLX-2.6/NOPB datasheet, LP5900TLX-2.6/NOPB pinout, LP5900TLX-2.6/NOPB application, or LP5900TLX-2.6/NOPB equivalent, key selection criteria include low-noise power delivery for sensitive RF front-ends, minimal external component count in space-constrained portable designs, thermal performance under 150-mA load, and enable-controlled power sequencing in battery-powered systems.
Technical Context
The LP5900TLX-2.6/NOPB employs an innovative internal RC-filtered reference architecture that suppresses bandgap noise before amplification, eliminating the need for an external noise-bypass capacitor. Its low-quiescent-current design (25 μA enabled, <1 μA disabled) integrates a 1-MΩ internal pull-down on the EN pin for fail-safe shutdown.
Stability is guaranteed with 0.47-μF ±30% X7R/X5R ceramic capacitors on both IN and OUT pins, with ESR between 5 mΩ and 500 mΩ. The device features thermal shutdown 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 2.6 V ±2% - ensures precise biasing for RF ICs and ADC references without external feedback. |
| Max Output Current | 150 mA - sufficient for powering RF transceivers, PLLs, or low-power analog signal chains. |
| Dropout Voltage | 80 mV typ. at 150 mA - enables operation from single-cell Li-ion (3.0 V min) while maintaining regulation down to 2.68 V input. |
| Output Noise | 6.5 μVRMS (10 Hz–100 kHz) - minimizes phase noise in VCOs and jitter in clock buffers. |
| PSRR | 75 dB at 1 kHz - rejects switching noise from adjacent DC/DC converters feeding the LDO input. |
| Quiescent Current | 25 μA (enabled), <1 μA (disabled) - extends battery life in always-on sensor nodes and standby modes. |
| Enable Thresholds | VIL ≤ 0.4 V, VIH ≥ 1.2 V - compatible with 1.8-V and 3.3-V logic without level-shifting. |
Pinout & Package
LP5900TLX-2.6/NOPB is packaged in a 4-pin DSBGA (YZR) with 1.108 mm × 1.083 mm body size and an exposed thermal pad on the bottom. The package requires connection of the thermal pad to PCB ground via thermal vias for optimal thermal performance.
| 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. |
| OUT (B2) | Regulated output | Delivers fixed 2.6 V; requires 0.47-μF ceramic capacitor with 5–500 mΩ ESR for stability. |
| GND (B1) | Power ground reference | Common return path for input, output, and internal circuitry; connects to thermal pad potential. |
| EN (A1) | Logic-controlled enable | Active-high input with 1-MΩ internal pull-down; drives high (>1.2 V) to enable, low (<0.4 V) to disable. |
| Thermal Pad | Thermal conduction path | Exposed copper pad on package underside; must be soldered to PCB ground plane with ≥4 thermal vias for RθJB = 35.6°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| No external noise bypass capacitor | Internal RC-filtered reference eliminates need for dedicated 10-nF bypass cap-reduces BOM count and board area. |
| Ultra-low output noise | 6.5 μVRMS enables clean power for RF synthesizers and high-resolution ADCs without post-regulation filtering. |
| Stable with minimal capacitance | Guaranteed stability with 0.47-μF ceramic caps (X7R/X5R) - avoids costly tantalum or large MLCCs. |
| Low dropout & high PSRR | 80-mV dropout + 75-dB PSRR at 1 kHz allows co-location with noisy DC/DC converters in compact RF modules. |
| Thermal and short-circuit protection | 160°C thermal shutdown with 20°C hysteresis and 300-mA short-circuit limit ensure robustness in field-deployed devices. |
Applications
| Cellular Front-End Power | Wireless LAN RFIC Bias |
|---|---|
Use Scenario: Powering RF power amplifier (PA) bias rails and low-noise amplifier (LNA) supplies in 4G LTE handsets. IC Role / Device Role / Timing Role: Low-noise LDO providing clean 2.6 V bias to PA driver stage, minimizing AM-to-PM distortion and spectral regrowth. Use Value: 6.5 μVRMS noise prevents degradation of EVM and ACLR; 150-mA capability supports multi-stage PA biasing. | Use Scenario: Supplying VDD to 2.4 GHz/5 GHz WLAN transceiver ICs in smartphones and IoT gateways. IC Role / Device Role / Timing Role: Primary analog supply for RF synthesizer and mixer blocks, rejecting noise from shared system DC/DC. Use Value: 75 dB PSRR at 1 kHz suppresses switching ripple from 2-MHz buck converter; 0.47-μF cap fit enables 1.1-mm footprint. |
| PDA Baseband Core Supply | Portable Medical Sensor Analog Rail |
Use Scenario: Delivering regulated 2.6 V to baseband processor analog peripherals (ADC, DAC, audio codec) in legacy PDA platforms. IC Role / Device Role / Timing Role: Low-quiescent LDO enabling always-on sensor monitoring with fast 150-μs startup upon wake-up interrupt. Use Value: 25 μA IQ preserves battery life; 150-μs turn-on time meets real-time response requirements for touch and motion sensing. | Use Scenario: Powering precision analog front-end (AFE) of wearable ECG/PPG sensors requiring sub-10-μV noise floor. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply for instrumentation amplifier and sigma-delta ADC reference chain. Use Value: 6.5 μVRMS noise directly translates to <0.1 LSB noise in 16-bit ADCs; no bypass cap simplifies medical-grade layout. |
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 | Not suitable for 2.6 V rail; higher noise limits use in RF/analog circuits | Select only if target voltage is 1.2 V and noise budget permits >7× increase over LP5900TLX-2.6/NOPB |
| MCP1700-2602E/TO | 2.6 V output, 250-mA rating, 30 μVRMS noise, 6-μF min output cap, SOT-23-3 package | Larger footprint, higher noise, and larger capacitor requirement reduce suitability for space-constrained RF layouts | Consider only when DSBGA assembly is unavailable and 30-μV noise is acceptable for non-RF analog loads |
Compared with TPL720F12-DBVR and MCP1700-2602E/TO, LP5900TLX-2.6/NOPB uniquely delivers 2.6 V at 6.5 μVRMS noise in a 1.1-mm² DSBGA with zero-bypass-capability-making it the only option meeting stringent RF power integrity requirements in ultra-compact form factors.
Availability
LP5900TLX-2.6/NOPB is available at Aetrix Electronics and suitable for cellular front-end power, wireless LAN RFIC bias, and portable medical sensor analog rails requiring stable component supply across production lifecycles.
Supply support for LP5900TLX-2.6/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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and high-reliability ICs.
The LP5900 product line was engineered specifically for ultra-low-noise, low-ESR-capacitor LDO applications in RF and precision analog subsystems-targeting cellular, WLAN, and portable medical equipment where power integrity directly impacts signal fidelity.
FAQ
What is the minimum input voltage required for LP5900TLX-2.6/NOPB to regulate at 2.6 V?
The LP5900TLX-2.6/NOPB requires a minimum input voltage of 2.5 V to power internal circuitry, but full regulation at 2.6 V demands VIN ≥ VOUT + VDO. With 80 mV typical dropout, LP5900TLX-2.6/NOPB maintains regulation down to 2.68 V input at 150 mA. Below this, output voltage drops linearly with input.
Can LP5900TLX-2.6/NOPB operate without an output capacitor?
No. LP5900TLX-2.6/NOPB requires a minimum 0.47-μF ceramic output capacitor with ESR between 5 mΩ and 500 mΩ for stability. Operation without COUT risks oscillation and loss of regulation. The datasheet explicitly states stability is guaranteed only with ≥0.47-μF X7R/X5R ceramics.
Does LP5900TLX-2.6/NOPB require a noise bypass capacitor?
No. LP5900TLX-2.6/NOPB uses an internal first-order RC filter on its reference voltage to suppress noise, eliminating the need for an external 10-nF noise bypass capacitor. This reduces component count and PCB area-confirmed in the device description, features list, and simplified schematic.
What is the thermal pad connection requirement for LP5900TLX-2.6/NOPB?
The exposed thermal pad on LP5900TLX-2.6/NOPB must be soldered to a PCB ground plane using ≥4 thermal vias. TI specifies connecting the pad to the same ground potential as pin 3 (GND); floating or connecting to other potentials violates thermal and electrical specifications and may cause instability or damage.
How does the enable pin of LP5900TLX-2.6/NOPB behave when left unconnected?
LP5900TLX-2.6/NOPB has a 1-MΩ internal pull-down resistor on the EN pin (pin A1). When left unconnected, EN is pulled to GND (<0.4 V), placing the device in disabled state with <1 μA quiescent current. To enable, an external logic signal ≥1.2 V must drive the pin-no external pull-up is needed.
LP5900TLX-2.6/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-WFBGA, DSBGA
- 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):
- 2.6V
- 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-2.6/NOPB FAQ
1.How can I place an order for LP5900TLX-2.6/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5900TLX-2.6/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-2.6/NOPB reliable?
The price and inventory of LP5900TLX-2.6/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-2.6/NOPB is usually 5 days.
3.What payment methods are accepted for LP5900TLX-2.6/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5900TLX-2.6/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5900TLX-2.6/NOPB?
LP5900TLX-2.6/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5900TLX-2.6/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-2.6/NOPB?
For technical support, including LP5900TLX-2.6/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5900TLX-2.6/NOPB requirements.
6.How does Aetrix verify that LP5900TLX-2.6/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5900TLX-2.6/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-2.6/NOPB meets industry standards.
7.What is the process for return or replacement of LP5900TLX-2.6/NOPB?
All LP5900TLX-2.6/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5900TLX-2.6/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-2.6/NOPB part is unused and in its original packaging.
Return procedure for LP5900TLX-2.6/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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