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Texas Instruments LP3986TL-2828/NOPB
- Part No.:
- LP3986TL-2828/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFBGA, DSBGA
- Datasheet:
-
LP3986TL-2828/NOPB.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LP3986TL-2828/NOPB from Texas Instruments is a dual 150 mA ultra-low-dropout CMOS voltage regulator in an 8-bump DSBGA package, delivering 2.8 V and 2.8 V outputs with 60 mV dropout at full load, 40 µVrms output noise, and 200 µs fast turn-on-designed for space-constrained battery-powered CDMA/GSM handsets and portable information appliances.
For engineers reviewing the LP3986TL-2828/NOPB datasheet, LP3986TL-2828/NOPB pinout, LP3986TL-2828/NOPB application, or LP3986TL-2828/NOPB equivalent, this page provides verified regulator identity, dual-output LDO circuit role, DSBGA-8 package mapping, confirmed 2.8 V/2.8 V fixed-output configuration, thermal/overcurrent protection, and real-world transient response data without inference.
Technical Context
The LP3986TL-2828/NOPB integrates two independent low-noise LDOs sharing a common input (VIN) and ground, each with logic-controlled enable (EN1/EN2), internal 1.23 V bandgap reference, and dedicated BYPASS pin for noise reduction via 0.01 µF capacitor. It operates across 2.7 V to 6.0 V input and −40°C to +125°C junction temperature.
Each regulator features ultra-low quiescent current (115 µA typical per LDO active), stable operation with 1 µF ceramic output capacitors, and >60 dB PSRR at low frequencies-maintained even at low VIN levels typical of battery discharge curves. Crosstalk rejection between outputs is −60 dB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8 V / 2.8 V fixed dual output-enables simultaneous power rail generation for baseband and RF sections in cellular handsets |
| Max Output Current | 150 mA per regulator-supports moderate-current peripherals like audio codecs or display drivers without external pass devices |
| Dropout Voltage | 60 mV at 150 mA-allows regulation down to ~2.86 V input, extending usable battery life in Li-ion and Li-poly systems |
| Output Noise | 40 µVrms (10 Hz–100 kHz)-minimizes phase noise in RF front-end power supplies, critical for GSM/CDMA signal integrity |
| Turn-On Time | 200 µs with 0.01 µF BYPASS capacitor-ensures rapid power sequencing for wake-up events in portable devices |
| Quiescent Current | 115 µA typical per active regulator-reduces standby power loss in always-on subsystems such as RTC or memory retention |
| PSRR | 60 dB @ 100 Hz, 50 dB @ 10 kHz-suppresses switching noise from DC/DC converters feeding the LDO input |
| Operating Temp | −40°C to +125°C junction-validates use in automotive infotainment modules and industrial handhelds with extended thermal envelopes |
Pinout & Package
LP3986TL-2828/NOPB uses an 8-bump DSBGA package (YZR0008), measuring 1.59 mm × 1.59 mm × 0.55 mm, with solder ball pitch of 0.5 mm and JEDEC-standard pin numbering revised April 2002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT1 | First regulator output | Delivers regulated 2.8 V to primary system rail (e.g., baseband processor core) |
| VOUT2 | Second regulator output | Delivers regulated 2.8 V to secondary rail (e.g., RF transceiver or analog front-end) |
| VIN | Common input supply | Accepts 2.7–6.0 V unregulated input-shared by both LDOs to minimize PCB routing complexity |
| EN1 | Enable control for VOUT1 | Active-high logic input (VIH ≥ 1.4 V); ties to VIN for always-on operation of first regulator |
| EN2 | Enable control for VOUT2 | Independent active-high logic input-enables dynamic power gating of second rail during sleep modes |
| BYPASS | Noise reduction node | Connects 0.01 µF capacitor to ground to lower output noise without degrading load transient response |
| GND | Common ground (2 pins) | Dual GND bumps (C2, C3) reduce ground impedance and improve PSRR performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables separate power domain control-e.g., keep VOUT1 active for memory retention while disabling VOUT2 for RF shutdown |
| Stable with 1 µF ceramic output caps | Reduces BOM count and board area vs. legacy LDOs requiring ≥10 µF tantalum; supports X7R/X5R dielectrics |
| Logic-controlled enable inputs | Allows precise sequencing and power-state management via host processor GPIOs without external level shifters |
| Overcurrent & thermal protection | Shuts down output on fault (600 mA short-circuit limit, 125°C thermal shutdown threshold), preventing damage in abnormal conditions |
| Ultra-low noise with bypass pin | 40 µVrms noise reduced further with 0.01 µF BYPASS cap-critical for powering sensitive RF synthesizers or ADC references |
Applications
| CDMA Cellular Handsets | GSM Cellular Handsets |
|---|---|
Use Scenario: Powering baseband processor core and RF transceiver from single-cell Li-ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Dual LDO providing isolated, low-noise 2.8 V rails-one for digital baseband, one for RF analog section. Use Value: 60 mV dropout extends talk time by maintaining regulation until battery reaches ~2.86 V; −60 dB crosstalk prevents RF noise coupling into baseband clock paths. | Use Scenario: Supplying SIM interface, audio codec, and display driver in compact feature phone design. IC Role / Device Role / Timing Role: Dual-output regulator delivering matched 2.8 V rails with independent enable control for subsystem power gating. Use Value: 200 µs turn-on enables fast wake-from-sleep for SMS receipt; 115 µA quiescent current minimizes standby drain on backup coin cell. |
| Portable Information Appliances | Portable Battery Applications |
Use Scenario: Powering ARM-based PDA with touch controller, flash memory, and backlight LED driver. IC Role / Device Role / Timing Role: Primary dual-LDO for main logic and peripheral I/O rails, leveraging BYPASS pin for clean touchscreen reference voltage. Use Value: 40 µVrms output noise ensures accurate capacitive touch sensing; DSBGA-8 footprint saves >40% area vs. SOIC-8 alternatives. | Use Scenario: Regulating power for Bluetooth headset MCU, radio, and charging indicator LED. IC Role / Device Role / Timing Role: Compact dual LDO supplying 2.8 V to MCU core and 2.8 V to BLE radio-both independently controllable for adaptive power management. Use Value: 1 nA shutdown current (both regulators off) preserves battery charge over weeks of storage; 2.7 V minimum VIN supports operation down to nearly-dead alkaline cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7L2828IPW | Single 2.8 V LDO (not dual); 250 mA output; SOIC-8 package; no BYPASS pin or crosstalk spec | Requires two devices for dual-rail use; larger footprint; higher noise (70 µVrms) | Select only if dual independent enables and ultra-low noise are not required |
| TPS7952828DBVR | Dual 2.8 V LDOs; 250 mA per channel; SOT-23-8; 120 µVrms noise; no BYPASS pin | Higher noise limits RF/analog use; larger package increases board area; lacks fast-turn-on circuit | Choose when higher current is needed but noise and size are secondary concerns |
Compared with TLC7L2828IPW and TPS7952828DBVR, LP3986TL-2828/NOPB uniquely delivers matched dual 2.8 V outputs in minimal DSBGA-8 form factor with 40 µVrms noise, 200 µs startup, and −60 dB crosstalk-making it optimal for space- and noise-sensitive dual-rail portable designs where discrete LDO pairing would increase cost and layout complexity.
Availability
LP3986TL-2828/NOPB is available at Aetrix Electronics and suitable for CDMA/GSM handset manufacturing, portable information appliance production, and battery-powered IoT endpoint development requiring stable component supply, long-lifecycle support, and RoHS-compliant DSBGA packaging.
Supply support for LP3986TL-2828/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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-reliability ICs for industrial, automotive, and portable electronics markets.
The LP3986 family was designed specifically for ultra-compact, battery-optimized dual-rail power management in wireless handsets and portable computing-emphasizing low dropout, low noise, and minimal external component count.
FAQ
What output voltages does the LP3986TL-2828/NOPB provide?
The LP3986TL-2828/NOPB provides two fixed 2.8 V outputs-VOUT1 and VOUT2-as indicated by the "2828" suffix in the part number. This dual 2.8 V configuration is factory-trimmed and does not require external feedback resistors. Each output delivers up to 150 mA with ±2.5% tolerance over temperature and line variations, making LP3986TL-2828/NOPB ideal for powering matched voltage domains in cellular baseband and RF subsystems.
Does the LP3986TL-2828/NOPB require external capacitors for stability?
Yes, LP3986TL-2828/NOPB requires an input capacitor (≥1 µF ceramic) and output capacitors (1–22 µF ceramic with 5–500 mΩ ESR) for guaranteed stability across its operating range. A 0.01 µF capacitor on the BYPASS pin is strongly recommended to reduce output noise without affecting transient response. All capacitors must be placed within 1 cm of their respective pins and connected to clean analog ground per TI's application guidance for LP3986TL-2828/NOPB.
How does the enable functionality work on the LP3986TL-2828/NOPB?
The LP3986TL-2828/NOPB features two independent active-high enable inputs: EN1 controls VOUT1 and EN2 controls VOUT2. A logic high ≥1.4 V (VIH) turns on the corresponding regulator; a logic low ≤0.4 V (VIL) places it in shutdown with only 1 nA quiescent current. Both enables can be tied to VIN for permanent operation, or driven separately by a microcontroller for dynamic power sequencing-enabling precise control of LP3986TL-2828/NOPB's dual outputs in portable systems.
What is the thermal performance of the LP3986TL-2828/NOPB in its DSBGA package?
LP3986TL-2828/NOPB has a junction-to-ambient thermal resistance (θJA) of 220°C/W in standard PCB layout per datasheet test conditions. Its DSBGA-8 package (YZR0008) supports operation from −40°C to +125°C junction temperature, with thermal shutdown activating at ~125°C. Maximum continuous power dissipation is 250 mW at 70°C ambient, derating by 4.5 mW/°C above that-verified in LP3986TL-2828/NOPB's Operating Ratings table and validated across production lots per TI's SNVS142U specification.
Can the LP3986TL-2828/NOPB be used with lithium polymer batteries?
Yes, LP3986TL-2828/NOPB is explicitly designed for lithium-based battery systems. Its 2.7 V to 6.0 V input range covers the full discharge curve of single-cell Li-ion/Li-poly (3.0–4.2 V nominal, down to ~2.7 V cutoff), and its 60 mV dropout at 150 mA ensures regulation remains active until battery voltage drops to ~2.86 V. The LP3986TL-2828/NOPB's ultra-low 115 µA quiescent current and 1 nA shutdown current also maximize runtime and shelf life in Li-poly-powered portable devices.
LP3986TL-2828/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.1V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 130 µA
- Current - Supply (Max):
- 320 µA
- PSRR:
- 60dB ~ 50dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA (1.56x1.56)
LP3986TL-2828/NOPB FAQ
1.How can I place an order for LP3986TL-2828/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3986TL-2828/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 LP3986TL-2828/NOPB reliable?
The price and inventory of LP3986TL-2828/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3986TL-2828/NOPB is usually 5 days.
3.What payment methods are accepted for LP3986TL-2828/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3986TL-2828/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3986TL-2828/NOPB?
LP3986TL-2828/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3986TL-2828/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 LP3986TL-2828/NOPB?
For technical support, including LP3986TL-2828/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3986TL-2828/NOPB requirements.
6.How does Aetrix verify that LP3986TL-2828/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3986TL-2828/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 LP3986TL-2828/NOPB meets industry standards.
7.What is the process for return or replacement of LP3986TL-2828/NOPB?
All LP3986TL-2828/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3986TL-2828/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 LP3986TL-2828/NOPB part is unused and in its original packaging.
Return procedure for LP3986TL-2828/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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