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Texas Instruments LP5910-1.1BYKAT
- Part No.:
- LP5910-1.1BYKAT
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
LP5910-1.1BYKAT.pdf
- Description:
- IC REG LINEAR 1.1V 300MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,730
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Product details
Overview
LP5910-1.1BYKAT from Texas Instruments is a 300-mA, low-noise, low-IQ LDO regulator with fixed 1.1-V output, designed for RF and analog power rails. It operates from 1.3 V to 3.3 V input, delivers ±2% output voltage tolerance, achieves 75 dB PSRR at 1 kHz, and maintains stability with only 1-µF ceramic input and output capacitors - no bypass capacitor required. It serves as a post-DC/DC regulator in mobile and portable medical devices.
For engineers reviewing the LP5910-1.1BYKAT datasheet, LP5910-1.1BYKAT pinout, LP5910-1.1BYKAT application, or LP5910-1.1BYKAT equivalent, this page provides verified package mapping (YKA DSBGA), confirmed thermal performance (RθJA = 202.8°C/W), validated reverse current protection, automatic output discharge functionality, and real-world transient response data for fast-turnoff and noise-sensitive designs.
Technical Context
The LP5910-1.1BYKAT implements a PMOS pass transistor architecture with integrated bandgap reference, error amplifier, and current-limit circuitry. Its enable logic includes a 1-MΩ internal pulldown resistor and defined VIH/VIL thresholds (0.3 V / 1 V) for reliable digital control across –40°C to 125°C junction temperature.
It features active reverse current protection that blocks conduction from OUT to IN when VOUT > VIN, and an internal 160-Ω pulldown resistor for automatic output discharge during shutdown - both confirmed in electrical characteristics and functional block diagram.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.1 V ±2% - ensures stable bias for 1.1-V core logic or RF VCOs without external feedback. |
| Max output current | 300 mA - supports single-core processors, sensor signal chains, or dual-band RF front-ends. |
| Dropout voltage | 120 mV (typical at 300 mA) - enables operation with ≤1.22 V input, suitable for single-cell Li-ion or Li-poly systems. |
| Quiescent current | 12 µA (no load, enabled) - extends battery life in always-on sensor nodes or standby audio subsystems. |
| Output noise | 12 µVRMS (10 Hz–100 kHz) - meets stringent phase noise requirements for PLLs and clock generators. |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuits. |
| Input voltage range | 1.3 V to 3.3 V - compatible with buck converter outputs, multi-cell batteries, and wide-input industrial rails. |
Pinout & Package
The LP5910-1.1BYKAT uses the YKA package: a 4-pin ultra-thin DSBGA with 0.742 mm × 0.742 mm body size and 0.35 mm pitch. The package has no exposed thermal pad and requires no NC connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 1.3–3.3 V; requires ≥1-µF ceramic capacitor within 1 cm for stability and EMI suppression. |
| OUT | Regulated output | Delivers fixed 1.1 V; supports remote capacitor placement up to 10 cm - simplifies layout in space-constrained modules. |
| GND | Ground reference | Common return path for IN, OUT, and EN; must be connected to low-impedance system ground plane. |
| EN | Enable control input | Logic-high (≥1 V) enables regulation; logic-low (≤0.3 V) disables output and activates 160-Ω discharge path. |
Key Features
| Feature | Design Value |
|---|---|
| No-bypass-capacitor low-noise operation | 12 µVRMS noise achieved without external bypass cap - reduces BOM count and PCB area in compact wearables. |
| Reverse current protection | Blocks <0.05 µA reverse current when VOUT > VIN - prevents backfeeding into weak or disconnected sources. |
| Automatic output discharge | 160-Ω internal pulldown discharges COUT rapidly on disable - eliminates residual voltage that could delay system reset. |
| Thermal and short-circuit protection | Shuts down at 160°C junction temp with 15°C hysteresis; limits output to 450 mA - protects against sustained overload or board-level faults. |
| Ultra-low IQ in shutdown | 0.02 µA typical IQ(SD) - enables true zero-power sleep modes in battery-powered IoT endpoints. |
Applications
| Mobile Power Rail | RF VCO Supply |
|---|---|
|
Use Scenario: Powers application processor cores or modem baseband ICs in smartphones and tablets where input is derived from a 1.8-V buck converter. IC Role / Device Role / Timing Role: Post-regulator providing clean, low-noise 1.1-V supply to avoid digital switching noise coupling into analog sections. Use Value: Enables stable core voltage under dynamic load (0–300 mA) with <±2% tolerance and <1 mV line transient deviation. |
Use Scenario: Supplies local bias to voltage-controlled oscillators in 5G mmWave transceivers requiring ultra-low phase noise. IC Role / Device Role / Timing Role: Low-noise LDO delivering 1.1 V to VCO tuning circuitry, directly impacting integrated phase jitter performance. Use Value: 12 µVRMS noise and 75 dB PSRR at 1 kHz suppress power rail-induced jitter, improving EVM in high-order QAM schemes. |
| Portable Medical Sensor | IP Camera Image Signal Chain |
|
Use Scenario: Powers ADC front-end and low-power microcontroller in handheld ECG or pulse oximeter units powered by coin-cell or small Li-ion. IC Role / Device Role / Timing Role: Primary voltage regulator enabling long battery life and precise analog measurement accuracy. Use Value: 12 µA no-load IQ extends operating time beyond 72 hours on a CR2032; ±2% output tolerance ensures consistent ADC reference scaling. |
Use Scenario: Supplies image sensor analog core and ISP processing block in compact IP cameras with tight thermal envelopes. IC Role / Device Role / Timing Role: Dedicated low-noise rail isolating sensor analog domain from noisy digital video processing subsystems. Use Value: Remote capacitor support allows shared bulk capacitance near sensor, reducing component count while maintaining 12 µVRMS noise floor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F11PDBVR | 1.1-V fixed output, 200-mA rating, 25 µVRMS noise, 1.2-V min input - higher noise, lower current, wider dropout. | Not suitable for 300-mA loads or sub-1.2-V input systems; lacks remote capacitor capability. | Select only if cost sensitivity outweighs noise and current requirements. |
| MCP1700T-1102E/TT | 1.1-V fixed output, 250-mA rating, 60 dB PSRR @ 1 kHz, 17 µVRMS noise, SOT-23-5 package - larger footprint, lower PSRR, no reverse current protection. | Requires external reverse-blocking diode; unsuitable for high-PSRR RF supply or space-constrained layouts. | Consider only for non-RF, low-density boards where SOT-23 thermal performance is acceptable. |
Compared with TPL720F11PDBVR and MCP1700T-1102E/TT, the LP5910-1.1BYKAT uniquely combines 300-mA capability, 12 µVRMS noise, reverse current blocking, and remote capacitor support in a 0.74-mm² DSBGA - making it the only option qualified for high-density, noise-critical, battery-operated RF subsystems.
Availability
LP5910-1.1BYKAT is available at Aetrix Electronics and suitable for mobile phones, portable medical equipment, and IP camera designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.
Supply support for LP5910-1.1BYKAT 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 and embedded processing technologies with over 90 years of innovation in power management and signal chain solutions.
The LP5910 product line was engineered specifically for noise-sensitive RF and analog power domains - delivering class-leading low-noise, low-IQ, and fast transient response in ultra-small packages for next-generation portable and wireless systems.
FAQ
What is the maximum input voltage for LP5910-1.1BYKAT?
The absolute maximum input voltage for LP5910-1.1BYKAT is 3.6 V, but the recommended operating range is 1.3 V to 3.3 V per TI's SNVSA91F datasheet. Exceeding 3.3 V may degrade long-term reliability or trigger overvoltage protection in adjacent circuitry. Always maintain VIN ≤ 3.3 V during normal operation to ensure specified PSRR, dropout, and noise performance for LP5910-1.1BYKAT.
Does LP5910-1.1BYKAT require an external bypass capacitor?
No, LP5910-1.1BYKAT does not require an external noise bypass capacitor. Its internal design achieves 12 µVRMS output noise (10 Hz–100 kHz) without one - a key differentiator confirmed in Section 1 (Features) and Section 7.3.1 of the datasheet. This eliminates BOM cost and PCB area typically needed for bypass caps in competing LDOs, simplifying layout for LP5910-1.1BYKAT implementations.
What package type is used for LP5910-1.1BYKAT?
LP5910-1.1BYKAT uses the YKA package: a 4-pin ultra-thin DSBGA with 0.742 mm × 0.742 mm body size and 0.35 mm pitch. This is explicitly stated in the "Added new package, YKA0004-C01" revision note and confirmed in Figure 5-1/5-2 of the SNVSA91F datasheet. Unlike the WSON (DRV) variant, YKA has no exposed thermal pad or NC pins - critical for correct thermal modeling and layout of LP5910-1.1BYKAT.
How does the enable pin (EN) function on LP5910-1.1BYKAT?
The EN pin on LP5910-1.1BYKAT is a logic-controlled input with a built-in 1-MΩ pulldown resistor. A voltage ≥1 V (VIH) enables regulation; ≤0.3 V (VIL) disables it and activates the 160-Ω internal pulldown to discharge the output. If left floating, the internal pulldown ensures default OFF state - a safety feature confirmed in Table 5-1 and Section 7.4.1. This behavior is fully characterized across –40°C to 125°C for LP5910-1.1BYKAT.
Is LP5910-1.1BYKAT stable with 1-µF ceramic capacitors?
Yes, LP5910-1.1BYKAT is explicitly designed and tested for stability with 1-µF ceramic input and output capacitors - no minimum ESR requirement. This is stated in Section 3 (Description), Section 8.2.2.2–8.2.2.3, and verified in Figure 8-1. Using X7R-type 1-µF ceramics ensures ±15% capacitance retention over temperature, meeting stability criteria without added components for LP5910-1.1BYKAT.
LP5910-1.1BYKAT 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):
- 1.1V
- 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
LP5910-1.1BYKAT FAQ
1.How can I place an order for LP5910-1.1BYKAT through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5910-1.1BYKAT 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 LP5910-1.1BYKAT reliable?
The price and inventory of LP5910-1.1BYKAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5910-1.1BYKAT is usually 5 days.
3.What payment methods are accepted for LP5910-1.1BYKAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5910-1.1BYKAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5910-1.1BYKAT?
LP5910-1.1BYKAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5910-1.1BYKAT 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 LP5910-1.1BYKAT?
For technical support, including LP5910-1.1BYKAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5910-1.1BYKAT requirements.
6.How does Aetrix verify that LP5910-1.1BYKAT is sourced from the original manufacturer or authorized distributors?
All LP5910-1.1BYKAT 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 LP5910-1.1BYKAT meets industry standards.
7.What is the process for return or replacement of LP5910-1.1BYKAT?
All LP5910-1.1BYKAT units undergo pre-shipment inspection (PSI). If there is an issue with LP5910-1.1BYKAT, 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 LP5910-1.1BYKAT part is unused and in its original packaging.
Return procedure for LP5910-1.1BYKAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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