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Texas Instruments LP5996SD-1018/NOPB
- Part No.:
- LP5996SD-1018/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LP5996SD-1018/NOPB.pdf
- Description:
- IC REG LINEAR 1V/1.8V 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:933
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Product details
Overview
LP5996SD-1018/NOPB from Texas Instruments is a dual low-dropout linear regulator IC with independent 300mA and 150mA outputs, fixed 1.0V and 1.8V output voltages, ±1.5% room-temperature accuracy, ultra-low 35µA quiescent current (enabled), and stable operation with 1µF ceramic output capacitors. It serves as a compact, low-noise power management solution for portable RF and digital baseband subsystems.
For engineers reviewing the LP5996SD-1018/NOPB datasheet, LP5996SD-1018/NOPB pinout, LP5996SD-1018/NOPB application, or LP5996SD-1018/NOPB equivalent, key selection criteria include independent enable control per LDO, thermal shutdown protection, 2.0V–6.0V input range, dropout voltage of 210mV at 300mA, and compatibility with small-footprint 3mm × 3mm WSON packaging.
Technical Context
The LP5996SD-1018/NOPB integrates two independent LDO regulators on a single die: LDO2 delivers up to 300mA at 1.8V with 210mV dropout at full load, while LDO1 supplies up to 150mA at 1.0V with 220mV dropout. Each features active-high enable pins (EN1/EN2) supporting zero-current shutdown (<10nA IQ).
Its internal voltage reference is bypassed via CBYP pin with a 10nF capacitor to reduce output noise (75µVRMS at 3.3V) and improve PSRR (70dB at 1kHz for LDO2). The device operates across −40°C to +85°C ambient and includes thermal shutdown at 160°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 1.0V (LDO1) and 1.8V (LDO2), fixed and non-adjustable - enables direct powering of core logic and I/O rails without external feedback components. |
| Max Output Current | 150mA (LDO1), 300mA (LDO2) - supports simultaneous supply of low-power microcontrollers and RF transceivers in space-constrained designs. |
| Input Voltage Range | 2.0V to 6.0V - compatible with single-cell Li-ion, Li-polymer, or multi-cell alkaline/battery sources without pre-regulation. |
| Quiescent Current | 35µA (both LDOs enabled), <10nA (both disabled) - extends battery life in always-on or sleep-mode applications such as IoT sensors. |
| Dropout Voltage | 210mV at 300mA (LDO2), 220mV at 150mA (LDO1) - allows regulation down to ~1.2V input for 1.0V output, maximizing usable battery voltage range. |
| Accuracy | ±1.5% at 25°C, ±3% over −40°C to +125°C junction - ensures reliable voltage margining for 1.0V core and 1.8V I/O domains in portable electronics. |
| PSRR | 70dB at 1kHz (LDO2), 58dB at 1kHz (LDO1) with CBYP = 10nF - suppresses switching noise from upstream DC/DC converters feeding the LDO inputs. |
Pinout & Package
LP5996SD-1018/NOPB uses a 10-pin WSON (SON-10) package, 3mm × 3mm body with exposed thermal pad (DSC package drawing), RoHS-compliant and lead-free (Green, CU SN finish), moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage supply | Accepts 2.0V–6.0V; requires 1µF ceramic capacitor to GND within 1cm for stability and transient response. |
| EN1 | Enable input for LDO1 (1.0V) | Active-high logic; VIH = 0.95V min, VIL = 0.4V max - compatible with 1.8V/3.3V GPIO; ties to VIN for permanent enable. |
| EN2 | Enable input for LDO2 (1.8V) | Independent active-high control; allows staggered power-up or dynamic rail gating in multi-voltage systems. |
| CBYP | Internal reference bypass | Connects to 10nF NPO/COG capacitor to GND; reduces output noise and improves PSRR/line transient performance. |
| GND | Ground reference (Pin 6) | Common return for both LDOs; must be connected to exposed thermal pad for thermal and electrical integrity. |
| VOUT2 | LDO2 output (1.8V, 300mA) | Delivers regulated 1.8V; requires 1µF ceramic capacitor to GND; ESR 5–500mΩ ensures stability. |
| VOUT1 | LDO1 output (1.0V, 150mA) | Delivers regulated 1.0V; same capacitor requirements as VOUT2; supports low-voltage core logic rails. |
| N/C (Pins 5,7,8) | No connection | Internally unconnected; must remain floating - no PCB trace or solder mask opening required. |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual-LDO architecture | Enables selective power gating: LDO1 (1.0V/150mA) for processor cores, LDO2 (1.8V/300mA) for memory/I/O, reducing system standby current. |
| Ultra-low quiescent current | 35µA total when both LDOs are active - minimizes battery drain in always-on wireless sensor nodes and wearables. |
| Ceramic-capacitor stability | Stable with ≥1µF X7R/X5R ceramic output caps (ESR 5–500mΩ); eliminates need for larger, costlier tantalum or electrolytic capacitors. |
| Thermal shutdown protection | Triggers at 160°C junction temperature with 20°C hysteresis - prevents permanent damage during overload or poor PCB thermal design. |
| Low-noise reference bypass | CBYP pin with 10nF capacitor reduces integrated output noise to 75µVRMS (3.3V output), critical for RF PLL and ADC reference supplies. |
Applications
| Smartphone Baseband Power | Wireless IoT Sensor Node |
|---|---|
Use Scenario: Dual-rail power for application processor (1.0V core) and connectivity subsystem (1.8V I/O) in compact smartphone modules. IC Role / Device Role / Timing Role: Primary dual-output LDO delivering tightly regulated, low-noise, independently controlled power rails with fast transient response. Use Value: Eliminates need for two discrete regulators; saves 25mm² PCB area and reduces BOM count while maintaining ±1.5% output accuracy across temperature. | Use Scenario: Battery-powered BLE/Wi-Fi sensor node requiring long-life operation with periodic wake-up and RF transmission bursts. IC Role / Device Role / Timing Role: System power manager providing 1.0V for MCU core and 1.8V for radio transceiver, with EN1/EN2 enabling deep-sleep mode. Use Value: Achieves <10nA shutdown current per rail, extending 250mAh coin-cell life to >5 years in 1-minute wake-up intervals. |
| Portable Medical Monitor | Industrial Handheld Terminal |
Use Scenario: Powering analog front-end (1.8V) and low-power microcontroller (1.0V) in FDA-class wearable ECG monitors. IC Role / Device Role / Timing Role: Low-noise, high-accuracy dual LDO ensuring clean supply for precision ADCs and real-time signal processing. Use Value: 75µVRMS output noise and 70dB PSRR at 1kHz prevent switching noise coupling into sensitive biopotential measurements. | Use Scenario: Rugged handheld terminal with barcode scanner, display backlight, and ARM Cortex-M4 MCU operating from 3.7V Li-ion battery. IC Role / Device Role / Timing Role: Primary local regulator supplying 1.0V core and 1.8V peripheral I/O, with thermal shutdown protecting against enclosure overheating. Use Value: 210mV dropout at 300mA enables >92% battery utilization down to 2.0V input, extending runtime between charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LPGEDR | Single 7-channel high-side driver (not LDO); 40V max, 600mA per channel; no voltage regulation capability. | Designed for relay/LED load switching, not power regulation - incompatible function. | Select only if driving discrete loads; not a functional alternative to LP5996SD-1018/NOPB. |
| TPS799185DRVR | Single 1.85V LDO, 200mA, 1.5% accuracy, 25µA IQ, 5-pin SOT-23 - lacks second output and independent enable. | Suitable only for single-rail 1.85V applications; cannot replace dual-rail 1.0V/1.8V configuration without redesign. | Use where only one regulated rail is needed; requires additional regulator for 1.0V core supply. |
Compared with TPL7407LPGEDR (non-regulator) and TPS799185DRVR (single-output), LP5996SD-1018/NOPB uniquely provides two independently enabled, fixed-voltage LDOs in one 3mm × 3mm package - essential for space-constrained dual-rail systems requiring coordinated power sequencing and ultra-low shutdown current.
Availability
LP5996SD-1018/NOPB is available at Aetrix Electronics and suitable for cellular handsets, wireless network adaptors, and portable medical monitors requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for LP5996SD-1018/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, embedded processing, and power management technologies, with leadership in high-reliability, low-power, and miniaturized IC solutions.
The LP5996 product line delivers dual-output, ultra-low-IQ LDO regulators optimized for portable and battery-powered electronics where board space, thermal efficiency, and standby power are critical constraints.
FAQ
What are the fixed output voltages of the LP5996SD-1018/NOPB?
The LP5996SD-1018/NOPB provides two fixed output voltages: 1.0V on VOUT1 (LDO1, rated for 150mA) and 1.8V on VOUT2 (LDO2, rated for 300mA). These values are laser-trimmed at wafer test and cannot be adjusted externally - confirmed by TI's LP5996 datasheet revision C and package addendum.
Does the LP5996SD-1018/NOPB require external capacitors, and what are the minimum values?
Yes, the LP5996SD-1018/NOPB requires an input capacitor (≥1µF ceramic), two output capacitors (≥1µF each on VOUT1 and VOUT2), and an optional 10nF ceramic capacitor on CBYP for optimal noise and PSRR performance. All ceramic capacitors must have ESR between 5mΩ and 500mΩ and use X7R/X5R dielectrics for temperature stability - per Electrical Characteristics and Application Hints sections of the official datasheet.
How does the enable functionality work on the LP5996SD-1018/NOPB?
The LP5996SD-1018/NOPB features two independent active-high enable inputs: EN1 controls LDO1 (1.0V), and EN2 controls LDO2 (1.8V). A logic high ≥0.95V enables the respective LDO; a logic low ≤0.4V disables it, reducing quiescent current to <10nA. Both pins tolerate up to VIN + 0.3V and must be driven by compatible GPIOs - verified in Pin Descriptions and Enable Control sections of SNVS415C.
What thermal protection features does the LP5996SD-1018/NOPB include?
The LP5996SD-1018/NOPB incorporates internal thermal shutdown that activates at 160°C junction temperature with 20°C hysteresis, preventing permanent damage during overload or inadequate heatsinking. This protection is independent of output loading and remains active across the full −40°C to +125°C junction operating range - specified in Absolute Maximum Ratings and Thermal Properties tables of the datasheet.
Is the LP5996SD-1018/NOPB compatible with lead-free reflow processes?
Yes, the LP5996SD-1018/NOPB is RoHS-compliant and qualified for lead-free reflow with a moisture sensitivity level (MSL) of 1 and peak reflow temperature of 260°C - confirmed by TI's Package Option Addendum (23-Sep-2013), which lists "Green (RoHS & no Sb/Br)" eco plan and "CU SN" lead finish for this orderable device.
LP5996SD-1018/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):
- 1V, 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -, 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-1018/NOPB FAQ
1.How can I place an order for LP5996SD-1018/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5996SD-1018/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-1018/NOPB reliable?
The price and inventory of LP5996SD-1018/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-1018/NOPB is usually 5 days.
3.What payment methods are accepted for LP5996SD-1018/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5996SD-1018/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5996SD-1018/NOPB?
LP5996SD-1018/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5996SD-1018/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-1018/NOPB?
For technical support, including LP5996SD-1018/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5996SD-1018/NOPB requirements.
6.How does Aetrix verify that LP5996SD-1018/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5996SD-1018/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-1018/NOPB meets industry standards.
7.What is the process for return or replacement of LP5996SD-1018/NOPB?
All LP5996SD-1018/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5996SD-1018/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-1018/NOPB part is unused and in its original packaging.
Return procedure for LP5996SD-1018/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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