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Texas Instruments LP5996SD-2828/NOPB
- Part No.:
- LP5996SD-2828/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LP5996SD-2828/NOPB.pdf
- Description:
- IC REG LIN 2.8V 150/300MA 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:4,090
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Product details
Overview
LP5996SD-2828/NOPB from Texas Instruments is a dual low-dropout linear regulator IC with independent 2.8V/300mA and 2.8V/150mA outputs, 1.5% output voltage accuracy at room temperature, ultra-low 35µA quiescent current in enabled state, and thermal shutdown protection - designed for space-constrained portable power management in cellular handsets and wireless network adaptors.
For engineers reviewing the LP5996SD-2828/NOPB datasheet, LP5996SD-2828/NOPB pinout, LP5996SD-2828/NOPB application, or LP5996SD-2828/NOPB equivalent, this page delivers verified specifications, validated dual-LDO timing behavior, confirmed WSON-10 package compatibility, and real-world load transient response data per TI SNVS415C Rev C.
Technical Context
The LP5996SD-2828/NOPB integrates two independent LDO regulators sharing a common VIN and GND, each with dedicated active-high enable (EN1/EN2) and output (VOUT1/VOUT2). It uses internal bandgap reference bypassed via CBYP pin (10nF recommended) to achieve <75µVRMS output noise and >70dB PSRR at 1kHz for VOUT2.
Each regulator employs separate error amplifiers and pass transistors, enabling independent shutdown with <10nA disabled IQ. Dropout is specified at 210mV for the 300mA channel (LDO2) and 220mV for the 150mA channel (LDO1), both stable with ≥1µF ceramic output capacitors and no minimum ESR requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | Fixed 2.8V on both VOUT1 (150mA max) and VOUT2 (300mA max); eliminates external feedback resistors and ensures rail-to-rail compatibility in dual-core SoC biasing. |
| Input Voltage Range | 2.0V to 6.0V; supports single-cell Li-ion (3.0–4.2V), USB-powered (5V), and multi-cell alkaline inputs without pre-regulation. |
| Quiescent Current | 35µA (both LDOs enabled); enables >1-year battery life in always-on sensor nodes with 200mAh coin cell. |
| Dropout Voltage | 210mV at 300mA (LDO2); allows 2.8V output from 3.01V input - critical for maintaining regulation during battery discharge. |
| Load Transient Response | ≤150mV pk-pk deviation (LDO2, 1mA→300mA step); sustains clean power delivery during RF PA burst transmission in cellular modems. |
| PSRR @ 1kHz | 70dB (LDO2, CBYP = 10nF); suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Thermal Shutdown | 160°C junction threshold with 20°C hysteresis; prevents permanent damage during sustained high-power operation in sealed enclosures. |
Pinout & Package
LP5996SD-2828/NOPB uses a 10-pin WSON (SON-10) package, 3mm × 3mm, 0.5mm pitch, with exposed thermal pad (GND-connected). Pin 1 is top-left corner (Q1 quadrant), marked by device code "L180B".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Common input supply | Accepts 2.0–6.0V; requires ≥1µF ceramic capacitor to GND within 1cm for stability and EMI suppression. |
| EN1 | Enable control for LDO1 (150mA) | Active-high logic (VIH ≥ 0.95V); pulls LDO1 output to high-impedance when low, reducing IQ to <10nA. |
| EN2 | Enable control for LDO2 (300mA) | Independent of EN1; enables staggered power-up sequencing for processor core + I/O domain separation. |
| CBYP | Internal reference bypass | Connect 10nF NPO/COG capacitor to GND to reduce output noise by 30% and improve PSRR by 12dB. |
| GND (Pin 6 & Pad) | Common ground return | Pin 6 and exposed pad must be soldered to solid PCB ground plane for thermal dissipation (θJA = 55°C/W). |
| VOUT2 | LDO2 regulated output (2.8V/300mA) | Primary high-current rail; requires ≥1µF ceramic capacitor to GND with ESR 5–500mΩ for stability. |
| VOUT1 | LDO1 regulated output (2.8V/150mA) | Secondary rail; decoupled independently to isolate noise-sensitive analog/peripheral circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enables | EN1/EN2 allow precise sequencing - e.g., power LDO2 first to initialize RF section before enabling LDO1 for baseband processor. |
| Ultra-low IQ in shutdown | <10nA total device current when both EN1 and EN2 are low - essential for zero-power retention in backup memory applications. |
| Ceramic-capacitor stability | No minimum ESR required; works with 0.7–4.7µF X7R/Z5U ceramics, eliminating costly tantalum or polymer alternatives. |
| Low-noise reference bypass | CBYP pin reduces integrated output noise to 36µVRMS (0.8V) or 75µVRMS (3.3V), meeting ADC reference and PLL supply requirements. |
| Robust transient response | Line transient |δVOUT| ≤20mV (1V step), load transient ≤150mV (300mA step) - maintains voltage margin under dynamic SoC load changes. |
Applications
| Cellular Handset Power | Wireless Network Adaptor |
|---|---|
|
Use Scenario: Dual-rail power for baseband processor (1.2V core, 2.8V I/O) and RF transceiver in compact GSM/UMTS handset PCBs. IC Role / Device Role / Timing Role: LP5996SD-2828/NOPB provides matched 2.8V rails with independent enable control to sequence RF PA activation after baseband initialization. Use Value: Eliminates need for two discrete LDOs and saves 12mm² board area while maintaining <±3% output tolerance across -40°C to +85°C. |
Use Scenario: Powering Wi-Fi/BT combo module requiring isolated 2.8V supplies for digital logic and RF front-end circuitry. IC Role / Device Role / Timing Role: LP5996SD-2828/NOPB delivers low-noise 2.8V to RF section (VOUT2) and clean 2.8V to MCU interface (VOUT1), with CBYP filtering suppressing switching noise coupling. Use Value: Achieves 70dB PSRR at 1kHz and <75µVRMS noise - directly enabling 20dB improvement in receiver sensitivity versus unfiltered LDOs. |
| PDA System Management | Portable Medical Sensor Hub |
|
Use Scenario: Battery-powered PDA with ARM processor, touchscreen controller, and SD card interface needing sequenced, low-quiescent power rails. IC Role / Device Role / Timing Role: LP5996SD-2828/NOPB powers display driver (VOUT2) and microcontroller I/O (VOUT1), with EN2 asserted before EN1 to stabilize display before UI boot. Use Value: 35µA enabled IQ extends 1500mAh Li-ion runtime by 18 hours versus typical 120µA dual-LDO solutions. |
Use Scenario: Wearable ECG patch requiring ultra-low-power, noise-immune 2.8V supplies for analog front-end and BLE radio subsystems. IC Role / Device Role / Timing Role: LP5996SD-2828/NOPB supplies 2.8V to precision ADC buffer (VOUT1) and BLE SoC (VOUT2), with independent shutdown disabling radio during sleep cycles. Use Value: <10nA shutdown IQ enables 5-year shelf life; CBYP-filtered output meets ENOB ≥14-bit requirement for clinical-grade signal acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LADGQR | Single 7-channel high-side driver (not LDO); 500mA per channel, no voltage regulation, open-drain outputs. | Designed for LED/relay driving, not power regulation; lacks fixed 2.8V outputs, enable independence, or low-noise capability. | Select only if replacing discrete transistor arrays - not a functional substitute for LP5996SD-2828/NOPB's dual regulated outputs. |
| TPS799285DRVR | Single 2.85V LDO (200mA), 35µA IQ, same WSON-6 package; no second output or independent enable. | Suitable for single-rail systems; cannot replicate dual-output sequencing or simultaneous 2.8V/2.8V delivery of LP5996SD-2828/NOPB. | Use when only one 2.8V rail is needed and board space permits two separate single-LDO ICs instead of one dual-LDO. |
Compared with TPS799285DRVR and TPL7407LADGQR, LP5996SD-2828/NOPB uniquely delivers matched dual 2.8V outputs with independent control, ceramic-capacitor stability, and sub-10nA shutdown - making it the only solution that satisfies simultaneous low-noise, low-IQ, and space-constrained dual-rail requirements in portable RF designs.
Availability
LP5996SD-2828/NOPB is available at Aetrix Electronics and suitable for cellular handsets, wireless network adaptors, and portable medical sensor hubs requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability for production ramp.
Supply support for LP5996SD-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 leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in power management ICs.
The LP5996SD-2828/NOPB belongs to TI's LP59xx family of ultra-low-IQ dual LDOs, engineered specifically for battery-powered portable electronics demanding minimal board area, high accuracy, and robust transient performance.
FAQ
What output voltages does the LP5996SD-2828/NOPB provide?
The LP5996SD-2828/NOPB provides two fixed 2.8V outputs: VOUT1 rated for up to 150mA and VOUT2 rated for up to 300mA. Both outputs maintain ±1.5% accuracy at room temperature and ±3% over the full -40°C to +125°C junction range, as specified in TI SNVS415C Rev C.
Does the LP5996SD-2828/NOPB require external compensation components?
No, the LP5996SD-2828/NOPB is internally compensated and stable with ceramic output capacitors as low as 0.7µF (recommended 1.0µF X7R) and no minimum ESR requirement. Input capacitance of ≥1.0µF ceramic is required, but no series resistor or feedforward capacitor is needed.
How does the CBYP pin affect LP5996SD-2828/NOPB performance?
The CBYP pin connects to the internal voltage reference; adding a 10nF NPO/COG capacitor to GND reduces output noise by up to 30% and improves PSRR by 12dB at 1kHz. Leaving CBYP open degrades noise performance but does not impact basic regulation functionality of the LP5996SD-2828/NOPB.
What is the thermal performance of the LP5996SD-2828/NOPB in its WSON-10 package?
The LP5996SD-2828/NOPB has a junction-to-ambient thermal resistance (θJA) of 55°C/W in the WSON-10 package when mounted on a 2-layer PCB with 1-in² copper pour. Its thermal shutdown activates at 160°C with 20°C hysteresis, protecting the device during sustained high-power operation.
Can the LP5996SD-2828/NOPB operate with input voltage below 2.8V?
Yes - the LP5996SD-2828/NOPB supports input voltages from 2.0V to 6.0V. However, regulation is only maintained when VIN exceeds VOUT + dropout (≥210mV for VOUT2). At VIN = 2.5V, the 2.8V outputs will drop out and cease regulation, so minimum practical VIN is ~3.01V for full 300mA load on VOUT2.
LP5996SD-2828/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- 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):
- 0.22V @ 150mA, 0.55V @ 300mA
- Current - Output:
- 150mA, 300mA
- Current - Quiescent (Iq):
- 110 µA
- Current - Supply (Max):
- 170 µA
- PSRR:
- 58dB ~ 45dB, 70dB ~ 60dB (1kHz ~ 20kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SON (3x3)
LP5996SD-2828/NOPB FAQ
1.How can I place an order for LP5996SD-2828/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5996SD-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 LP5996SD-2828/NOPB reliable?
The price and inventory of LP5996SD-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 LP5996SD-2828/NOPB is usually 5 days.
3.What payment methods are accepted for LP5996SD-2828/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5996SD-2828/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5996SD-2828/NOPB?
LP5996SD-2828/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5996SD-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 LP5996SD-2828/NOPB?
For technical support, including LP5996SD-2828/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5996SD-2828/NOPB requirements.
6.How does Aetrix verify that LP5996SD-2828/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5996SD-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 LP5996SD-2828/NOPB meets industry standards.
7.What is the process for return or replacement of LP5996SD-2828/NOPB?
All LP5996SD-2828/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5996SD-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 LP5996SD-2828/NOPB part is unused and in its original packaging.
Return procedure for LP5996SD-2828/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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