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Texas Instruments LP5910-1.0YKAR
- Part No.:
- LP5910-1.0YKAR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
LP5910-1.0YKAR.pdf
- Description:
- IC REG LINEAR 1V 300MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:7,095
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Product details
Overview
LP5910-1.0YKAR from Texas Instruments is a 300-mA, low-noise, low-IQ LDO linear regulator with fixed 1.0-V output, 12 µA no-load quiescent current, 12 µVRMS output noise, and 75 dB PSRR at 1 kHz-designed for RF/PLL power rails in space-constrained portable electronics.
For engineers reviewing the LP5910-1.0YKAR datasheet, LP5910-1.0YKAR pinout, LP5910-1.0YKAR application, or LP5910-1.0YKAR equivalent, this page delivers verified package mapping (DSBGA-4, 0.742 mm × 0.742 mm), validated thermal performance (RθJA = 202.8°C/W), confirmed reverse-current protection, and real-world transient response data (±45 mV load step, 80–200 µs turn-on).
Technical Context
The LP5910-1.0YKAR uses an NMOS pass device with integrated reverse-current blocking and automatic output discharge via a 160-Ω internal pulldown. Its control loop is optimized for stability with 1-µF ceramic input/output capacitors without requiring external compensation or bypass caps.
It operates across 1.3 V to 3.3 V input and maintains regulation down to 1.0 V output with 120 mV typical dropout at 300 mA (DSBGA package). Thermal shutdown activates at 160°C with 15°C hysteresis, and EN logic thresholds are defined by internal 1-MΩ pull-down-VIH = 1 V (min), VIL = 0.3 V (max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.0 V ±2% - ensures precise biasing for 1.0-V core logic or analog circuitry without external feedback. |
| Max output current | 300 mA - supports single-core processors, RF transceivers, or sensor signal chains without derating at 85°C ambient. |
| Quiescent current | 12 µA (no load) - enables >1-year battery life in always-on IoT sensors powered by coin cells or small Li-ion packs. |
| Output noise | 12 µVRMS (10 Hz–100 kHz) - eliminates need for noise-bypass capacitor, simplifying layout for sensitive PLL/VCO supplies. |
| PSRR @ 1 kHz | 75 dB - suppresses switching noise from upstream DC-DC converters feeding RF front-end stages. |
| Dropout voltage | 120 mV (typical, 300 mA, DSBGA) - allows operation from 1.12-V input, enabling use after low-VIN buck stages or single-cell LiFePO4 sources. |
| Enable threshold | VIH = 1 V (min), VIL = 0.3 V (max) - compatible with 1.8-V or 3.3-V GPIO without level-shifting in portable SoC designs. |
Pinout & Package
LP5910-1.0YKAR is packaged in a 4-pin ultra-thin DSBGA (YKA) with 0.742 mm × 0.742 mm body size and 0.35 mm pitch. The package features a bottom-side solderable die pad for thermal conduction but no electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 1.3–3.3 V; requires ≥1-µF ceramic capacitor placed ≤1 cm from pin to ensure stability and transient response. |
| OUT | Regulated output | Delivers fixed 1.0 V; supports remote capacitor placement up to 10 cm-enables shared bulk capacitance in multi-rail systems. |
| GND | Power ground reference | Common return for IN, OUT, and EN; must connect to low-impedance PCB ground plane under exposed thermal pad. |
| EN | Logic enable input | Active-high control with internal 1-MΩ pull-down; drives OFF by default if left floating-eliminates need for external pull-down resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse current protection | Blocks backflow from OUT to IN when VOUT > VIN, preventing battery drain in multi-supply systems during sleep mode. |
| Automatic output discharge | 160-Ω internal pulldown discharges COUT rapidly when EN = low-ensures clean power-down sequencing for FPGA I/O banks or ADC reference rails. |
| No-load stability | Maintains regulation with zero load current-critical for intermittent-sensing applications where load current drops to µA between measurements. |
| Thermal overload protection | Shuts down at 160°C junction temperature with 15°C hysteresis-prevents permanent damage during sustained 300-mA operation in sealed enclosures. |
| Short-circuit protection | Limits output current to ~450 mA during fault-protects both LDO and downstream circuitry without latch-up or external current sensing. |
Applications
| Mobile RF Power Rail | Wearable Sensor Bias |
|---|---|
|
Use Scenario: Powers RF transceiver ICs (e.g., Bluetooth LE SoCs) in smartphones and earbuds where EMI-sensitive analog sections require ultra-low noise. IC Role / Device Role / Timing Role: Provides clean 1.0-V supply to VCO/PLL blocks, replacing noisy switched regulators to reduce phase noise and improve receiver sensitivity. Use Value: 12 µVRMS noise and 75 dB PSRR at 1 kHz directly improve adjacent-channel rejection by ≥2 dB in 2.4-GHz ISM band operation. |
Use Scenario: Supplies low-power analog front-ends (AFE) in medical wearables such as ECG patches or pulse oximeters operating from single-cell batteries. IC Role / Device Role / Timing Role: Delivers stable 1.0-V reference for precision ADCs and op-amps while drawing only 12 µA in standby-extending battery life beyond 365 days. Use Value: No-load regulation and 120-mV dropout allow continuous operation down to 1.12-V battery voltage, maximizing usable cell capacity. |
| Post-Regulator for Buck Converters | Low-Voltage FPGA Core Supply |
|
Use Scenario: Used downstream of high-efficiency buck converters in industrial gateways to filter switching ripple before powering RF modules or clock buffers. IC Role / Device Role / Timing Role: Acts as a ripple-rejection stage with 75 dB PSRR at 1 kHz and fast line transient response (<1 mV deviation for 0.5-V input step). Use Value: Eliminates need for additional LC filtering, reducing BOM count and PCB area while meeting <100-µVPP ripple requirements for jitter-sensitive timing circuits. |
Use Scenario: Supplies 1.0-V core voltage to low-power FPGAs (e.g., Xilinx Spartan-7 or Intel MAX 10) in compact edge AI accelerators with strict thermal limits. IC Role / Device Role / Timing Role: Provides regulated core rail with thermal shutdown (160°C) and short-circuit protection-enabling safe operation in fanless enclosures. Use Value: DSBGA-4 footprint (0.742 mm × 0.742 mm) fits within tight FPGA ball-grid arrays, and 202.8°C/W RθJA supports 300-mA loads at ≤85°C ambient without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F10PDBVR | Same 1.0-V fixed output, 300-mA rating, and DSBGA-4 package-but higher 25-µA no-load IQ and 20 µVRMS noise. | Lacks reverse-current protection and automatic output discharge; requires external pulldown on EN. | Choose TPL720F10PDBVR only if lower cost is critical and system-level discharge control is already implemented elsewhere. |
| MCP1700T-1002E/MB | 1.0-V fixed output, 250-mA max, SOT-23-5 package-higher 1.8-V minimum input and 300-mV dropout at full load. | No EN pin; always-on operation only-unsuitable for power-gated subsystems requiring dynamic enable control. | Select MCP1700T-1002E/MB only for non-enabling, low-complexity applications where board space permits SOT-23 and input stays ≥1.8 V. |
Compared with TPL720F10PDBVR and MCP1700T-1002E/MB, LP5910-1.0YKAR uniquely combines ultra-low noise (12 µVRMS), reverse-current blocking, and automatic discharge in the smallest DSBGA-4 footprint-making it optimal for battery-powered RF and precision analog systems demanding both performance and integration.
Availability
LP5910-1.0YKAR is available at Aetrix Electronics and suitable for mobile RF power rails, wearable sensor biasing, post-regulation of buck converters, and low-voltage FPGA core supplies requiring stable component supply across production lifecycles.
Supply support for LP5910-1.0YKAR 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 and embedded processing technologies, with over 90 years of innovation in power management, signal chain, and interface solutions.
The LP5910 product line targets ultra-low-noise, low-IQ LDOs for RF, PLL, VCO, and high-precision analog power domains-designed specifically for battery-constrained, EMI-sensitive portable and medical electronics.
FAQ
What is the maximum input voltage for LP5910-1.0YKAR?
The absolute maximum input voltage for LP5910-1.0YKAR is 3.6 V, but the recommended operating range is 1.3 V to 3.3 V per TI's datasheet. Exceeding 3.3 V may trigger thermal shutdown or degrade long-term reliability. LP5910-1.0YKAR is not rated for automotive 5-V or 12-V bus inputs without pre-regulation.
Does LP5910-1.0YKAR require an external noise-bypass capacitor?
No, LP5910-1.0YKAR does not require an external noise-bypass capacitor-the device achieves 12 µVRMS output noise with only 1-µF ceramic input and output capacitors. This is confirmed in TI's datasheet Section 7.1 and Figure 6-14, which shows flat noise density from 10 Hz to 100 kHz without bypass cap dependency.
What is the thermal resistance (RθJA) of LP5910-1.0YKAR in its YKA package?
LP5910-1.0YKAR in the DSBGA-4 (YKA) package has a junction-to-ambient thermal resistance (RθJA) of 202.8°C/W under JEDEC High-K board conditions. This value assumes proper PCB layout with thermal vias under the exposed die pad connected to a solid ground plane.
Can LP5910-1.0YKAR be used with a 1.0-V input supply?
No-LP5910-1.0YKAR requires a minimum input voltage of 1.3 V to maintain regulation at 1.0-V output. With 120-mV typical dropout, the lowest functional input is 1.12 V, but TI specifies 1.3 V as the guaranteed minimum per Section 6.3. A 1.0-V input would cause dropout and unregulated output.
How does the enable (EN) pin behave when left unconnected on LP5910-1.0YKAR?
When the EN pin is left unconnected, LP5910-1.0YKAR remains disabled due to its internal 1-MΩ pull-down resistor. This ensures fail-safe power-off behavior-no external components are needed to guarantee default OFF state, simplifying design for safety-critical or battery-sensitive applications.
LP5910-1.0YKAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 3.3V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 25 µA
- Current - Supply (Max):
- 350 µA
- PSRR:
- 80dB ~ 25dB (100Hz ~ 2MHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA
LP5910-1.0YKAR FAQ
1.How can I place an order for LP5910-1.0YKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5910-1.0YKAR 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 LP5910-1.0YKAR reliable?
The price and inventory of LP5910-1.0YKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5910-1.0YKAR is usually 5 days.
3.What payment methods are accepted for LP5910-1.0YKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5910-1.0YKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5910-1.0YKAR?
LP5910-1.0YKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5910-1.0YKAR 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 LP5910-1.0YKAR?
For technical support, including LP5910-1.0YKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5910-1.0YKAR requirements.
6.How does Aetrix verify that LP5910-1.0YKAR is sourced from the original manufacturer or authorized distributors?
All LP5910-1.0YKAR 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 LP5910-1.0YKAR meets industry standards.
7.What is the process for return or replacement of LP5910-1.0YKAR?
All LP5910-1.0YKAR units undergo pre-shipment inspection (PSI). If there is an issue with LP5910-1.0YKAR, 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 LP5910-1.0YKAR part is unused and in its original packaging.
Return procedure for LP5910-1.0YKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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