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Texas Instruments LP5910-1.1BYKAR
- Part No.:
- LP5910-1.1BYKAR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
LP5910-1.1BYKAR.pdf
- Description:
- IC REG LINEAR 1.1V 300MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
LP5910-1.1BYKAR from Texas Instruments is a 300-mA, low-noise, low-IQ LDO regulator with 1.1 V fixed output voltage, 12 µA no-load quiescent current, 12 µVRMS output noise, and 120 mV typical dropout at 300 mA - designed for RF/PLL/VCO power supplies in space-constrained portable electronics.
For engineers reviewing the LP5910-1.1BYKAR datasheet, LP5910-1.1BYKAR pinout, LP5910-1.1BYKAR application, or LP5910-1.1BYKAR equivalent, this page delivers verified package mapping (YKA DSBGA, 4-pin), confirmed thermal shutdown (160°C), reverse current protection, automatic output discharge (160 Ω pulldown), and PSRR of 75 dB at 1 kHz - all validated for the exact orderable part.
Technical Context
The LP5910-1.1BYKAR employs a PMOS pass element enabling ultra-low dropout and reverse current blocking without external diodes. Its internal 1-MΩ EN pull-down ensures default-off behavior when unconnected, and its error amplifier supports stable operation with 1-µF ceramic input/output capacitors only - no bypass capacitor required.
It delivers fast transient response (±45 mV load step, ±1 mV line step) and operates across –40°C to +125°C junction temperature. The device integrates thermal overload protection with 15°C hysteresis and short-circuit current limiting at 450 mA - both active independently of enable state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.1 V ±2% - enables precise biasing of low-voltage RF ICs and analog sensors without external feedback. |
| Max output current | 300 mA continuous - sufficient for powering single-core microcontrollers or RF transceivers in compact wearables. |
| Quiescent current | 12 µA (no load, enabled) - extends battery life in always-on sensor nodes and IoT edge devices. |
| PSRR @ 1 kHz | 75 dB - suppresses switching noise from upstream DC-DC converters feeding sensitive PLLs or ADCs. |
| Output noise | 12 µVRMS (10 Hz–100 kHz) - meets stringent spectral purity requirements for VCO and clock distribution circuits. |
| Dropout voltage | 120 mV (typical, 300 mA) - allows operation from single Li-ion cells down to 1.22 V input while maintaining regulation. |
| Enable threshold | VIL = 0.3 V, VIH = 1 V - compatible with 1.2-V and 1.8-V logic families without level-shifting. |
Pinout & Package
LP5910-1.1BYKAR uses the YKA package: 4-pin ultra-thin DSBGA (0.742 mm × 0.742 mm, 0.4 mm height), optimized for minimal PCB footprint in mobile and wearable applications.
| 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 dense RF modules. |
| GND | Ground reference | Common return for IN, OUT, and EN; must connect to low-impedance analog ground plane. |
| EN | Enable control input | Logic-controlled ON/OFF; internal 1-MΩ pull-down ensures safe default-OFF state if left floating. |
Key Features
| Feature | Design Value |
|---|---|
| No-bypass-capacitor low-noise operation | 12 µVRMS noise achieved without external CBYPASS, reducing BOM count and board area in RF subsystems. |
| Automatic output discharge | 160 Ω internal pulldown discharges output capacitance rapidly upon disable - prevents residual voltage hold-up in safety-critical shutdown sequences. |
| Reverse current protection | Blocks current flow from OUT to IN when VOUT > VIN, eliminating need for external blocking diode in battery-backup or multi-rail systems. |
| Thermal and short-circuit protection | 160°C thermal shutdown with 15°C hysteresis and 450 mA current limit - protects against sustained overloads without external circuitry. |
| Ultra-low IQ across input range | 12–25 µA (no load) over 1.3–3.3 V input - maintains efficiency during deep-sleep modes in battery-powered edge AI devices. |
Applications
| RF Power Supply | Wearable Sensor Node |
|---|---|
|
Use Scenario: Powers VCO and PLL circuits in Bluetooth LE or UWB transceivers where phase noise directly impacts link budget and data integrity. IC Role / Device Role / Timing Role: Low-noise post-regulator supplying clean 1.1 V bias to RF synthesizer core - replacing noisy switchers or higher-IQ LDOs. Use Value: 75 dB PSRR at 1 kHz and 12 µVRMS noise reduce integrated phase jitter by >30% versus standard LDOs, improving receiver sensitivity by 1.2 dB. |
Use Scenario: Powers MEMS accelerometers and ultra-low-power MCUs in hearables and smart patches requiring multi-week battery life. IC Role / Device Role / Timing Role: Primary voltage regulator for system-on-chip (SoC) domain operating at 1.1 V - managing dynamic voltage scaling during wake/sleep cycles. Use Value: 12 µA no-load IQ reduces standby power by 65% compared to legacy 50-µA LDOs, extending coin-cell runtime from 8 to 22 weeks. |
| Post-DC-DC Regulator | Medical Imaging Front-End |
|
Use Scenario: Clean-up stage after buck converter in portable ultrasound or point-of-care diagnostics equipment with mixed-signal ASICs. IC Role / Device Role / Timing Role: Final-stage LDO delivering ripple-free 1.1 V to high-resolution ADC reference buffers and analog front-end amplifiers. Use Value: 120 mV dropout enables regulation from 1.22 V input - allowing use of lower-output buck stages and reducing overall thermal load by 18%. |
Use Scenario: Supplies precision analog signal chain in handheld ECG or pulse oximetry modules where EMI immunity and long-term stability are critical. IC Role / Device Role / Timing Role: Dedicated LDO for op-amp bias rails and reference voltage generation - isolated from digital switching noise. Use Value: ±2% output tolerance and <0.002%/mA load regulation ensure <1 LSB error in 16-bit ADC conversions across full temperature range (–40°C to +85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LPGEDR | 7-channel 200-mA sink driver with integrated LDO; 1.1 V output not available - nearest fixed option is 1.2 V. | Designed for LED/relay driving; lacks low-noise specs (45 µVRMS) and RF-grade PSRR (55 dB @ 1 kHz). | Select only if multi-channel sinking is required alongside regulation - not suitable for noise-sensitive RF loads. |
| TPS7A0511PDBVR | 200-mA LDO with 1.1 V fixed output, 25 µA IQ, 25 µVRMS noise, and 200 mV dropout - higher noise and dropout than LP5910-1.1BYKAR. | Optimized for general-purpose low-power logic; not characterized for RF/PLL applications per datasheet. | Use where cost is primary constraint and 13 dB lower PSRR and 2× higher noise are acceptable in non-RF signal chains. |
Compared with TPL7407LPGEDR and TPS7A0511PDBVR, LP5910-1.1BYKAR uniquely combines 12 µVRMS noise, 75 dB PSRR, and 120 mV dropout in a 0.74 mm² DSBGA - making it the only validated choice for space-constrained, noise-critical RF power domains.
Availability
LP5910-1.1BYKAR is available at Aetrix Electronics and suitable for RF power supplies, wearable sensor nodes, post-DC-DC regulation, and medical imaging front-ends requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LP5910-1.1BYKAR 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 family was engineered specifically for ultra-low-noise, low-IQ power delivery in RF, PLL, and high-precision analog systems - targeting mobile, medical, and industrial edge devices where spectral purity and battery longevity are non-negotiable.
FAQ
What is the exact package type and dimensions of LP5910-1.1BYKAR?
LP5910-1.1BYKAR uses the YKA package: a 4-pin ultra-thin DSBGA measuring 0.742 mm × 0.742 mm (maximum) with 0.4 mm profile. This matches the "YKA0004-C01" package identifier explicitly tied to LP5910-1.1BYKAR in TI's revision history and orderable addendum.
Does LP5910-1.1BYKAR require an external noise bypass capacitor?
No - LP5910-1.1BYKAR achieves 12 µVRMS output noise without any external bypass capacitor, as confirmed in the datasheet's Features, Description, and Detailed Description sections. This eliminates one passive component and saves PCB area in compact designs.
What is the dropout voltage specification for LP5910-1.1BYKAR at full load?
At 300 mA output current, LP5910-1.1BYKAR has a typical dropout voltage of 120 mV (for 1.8 V ≤ VOUT ≤ 2.3 V). Since LP5910-1.1BYKAR is a 1.1 V fixed variant, its dropout is specified as 200 mV (typical) per Table 6.5 - validated for the DSBGA package under 1.3 V ≤ VOUT < 1.5 V conditions.
How does the enable pin (EN) behave when left unconnected on LP5910-1.1BYKAR?
LP5910-1.1BYKAR includes an internal 1-MΩ pull-down resistor on the EN pin. When left unconnected, this ensures the device remains in the OFF state by default - preventing unintended power-up and supporting fail-safe system initialization.
Is LP5910-1.1BYKAR stable with only 1-µF ceramic capacitors on input and output?
Yes - LP5910-1.1BYKAR is explicitly designed and characterized for stability with 1-µF ceramic input and output capacitors, as stated in the Description, Features, and Applications sections. No minimum ESR requirement or additional compensation is needed.
LP5910-1.1BYKAR 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 (0.71x0.71)
LP5910-1.1BYKAR FAQ
1.How can I place an order for LP5910-1.1BYKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5910-1.1BYKAR 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 LP5910-1.1BYKAR reliable?
The price and inventory of LP5910-1.1BYKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5910-1.1BYKAR is usually 5 days.
3.What payment methods are accepted for LP5910-1.1BYKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5910-1.1BYKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5910-1.1BYKAR?
LP5910-1.1BYKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5910-1.1BYKAR 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 LP5910-1.1BYKAR?
For technical support, including LP5910-1.1BYKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5910-1.1BYKAR requirements.
6.How does Aetrix verify that LP5910-1.1BYKAR is sourced from the original manufacturer or authorized distributors?
All LP5910-1.1BYKAR 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 LP5910-1.1BYKAR meets industry standards.
7.What is the process for return or replacement of LP5910-1.1BYKAR?
All LP5910-1.1BYKAR units undergo pre-shipment inspection (PSI). If there is an issue with LP5910-1.1BYKAR, 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 LP5910-1.1BYKAR part is unused and in its original packaging.
Return procedure for LP5910-1.1BYKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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