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Texas Instruments LP5910-1.725YKAR
- Part No.:
- LP5910-1.725YKAR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
LP5910-1.725YKAR.pdf
- Description:
- 300-MA, LOW-NOISE, LOW-IQ, LOW-D
- Quantity:
- Payment:
- Shipping:
Inventory:2,146
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Product details
Overview
LP5910-1.725YKAR from Texas Instruments is a 300-mA, low-noise, low-IQ LDO linear regulator with fixed 1.725 V output, 12 µA no-load quiescent current, 12 µVRMS output noise, and 75 dB PSRR at 1 kHz-designed for RF/PLL/VCO power supplies in space-constrained portable electronics.
For engineers reviewing the LP5910-1.725YKAR datasheet, LP5910-1.725YKAR pinout, LP5910-1.725YKAR application, or LP5910-1.725YKAR 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 LP5910-1.725YKAR uses an NMOS pass transistor architecture with integrated bandgap reference and error amplifier, enabling stable regulation down to 1.3 V input while maintaining 120 mV typical dropout at 300 mA for 1.725 V output. Its internal 1-MΩ EN pull-down resistor ensures default-off behavior when unconnected.
It implements automatic output discharge via a 160 Ω internal pulldown during disable, supports remote capacitor placement up to 10 cm from OUT, and achieves low-noise operation without external bypass capacitors-enabled by proprietary noise-suppression circuitry verified across –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.725 V ±2% - eliminates external feedback network; matches common core logic and RF bias rails. |
| Max output current | 300 mA - sufficient for powering single-core processors, RF transceivers, or high-speed ADCs in portable systems. |
| Quiescent current | 12 µA (no load) - enables >1-year battery life in always-on sensor nodes or wearable standby modes. |
| PSRR @ 1 kHz | 75 dB - suppresses switching noise from upstream DC-DC converters feeding sensitive analog/RF circuits. |
| Output noise | 12 µVRMS (10 Hz–100 kHz) - meets stringent phase noise requirements for VCOs and PLLs without added filtering. |
| Dropout voltage | 120 mV (typical, 300 mA) - allows operation from single Li-ion cell (3.0–4.2 V) or post-buck rail as low as 1.845 V. |
| Input voltage range | 1.3 V to 3.3 V - compatible with dual-cell NiMH, single-cell LiFePO4, or regulated intermediate rails. |
Pinout & Package
LP5910-1.725YKAR 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 bottom-side solder balls and requires PCB thermal pad connection to ground for optimal thermal performance (RθJB = 36.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | Accepts 1.3–3.3 V supply; requires ≥1 µF ceramic capacitor within 1 cm for stability and EMI suppression. |
| OUT | Regulated output | Delivers fixed 1.725 V; supports remote capacitor placement up to 10 cm-enables layout flexibility in dense RF sections. |
| GND | Reference ground | Common return path for IN, OUT, and EN; must connect to low-impedance analog ground plane. |
| EN | Enable control | Active-high logic input (VIH ≥ 1 V); internal 1-MΩ pull-down ensures safe default-OFF state if left floating. |
Key Features
| Feature | Design Value |
|---|---|
| No external noise bypass capacitor required | Enables BOM reduction and PCB area savings in compact mobile designs without sacrificing 12 µVRMS noise performance. |
| Automatic output discharge | 160 Ω internal pulldown discharges output capacitance rapidly on disable-prevents residual voltage from interfering with system sequencing. |
| Reverse current protection | Blocks backflow from OUT to IN when VOUT > VIN, eliminating need for external blocking diode in battery-backup or hot-swap applications. |
| Stable with 1 µF ceramic capacitors | Reduces component count and cost vs. traditional LDOs requiring larger or higher-ESR output caps; supports X7R/X5R dielectrics. |
| Thermal and short-circuit protection | Shuts down at 160°C junction temperature with 15°C hysteresis; limits output current to ~450 mA to prevent damage during overload. |
Applications
| RF Power Supply | Portable Medical Sensor |
|---|---|
|
Use Scenario: Powers VCO and PLL circuitry in Bluetooth/Wi-Fi SoCs where phase noise directly impacts link margin and data integrity. IC Role / Device Role / Timing Role: Ultra-low-noise post-regulator supplying clean 1.725 V bias to RF synthesizer blocks. Use Value: 12 µVRMS noise and 75 dB PSRR at 1 kHz minimize jitter-induced bit errors and adjacent-channel interference. |
Use Scenario: Supplies analog front-end (AFE) and low-power microcontroller in handheld ECG or pulse oximeter units. IC Role / Device Role / Timing Role: Primary power source for signal-chain components requiring stable, low-drift voltage under varying battery conditions. Use Value: 12 µA IQ extends single-CR2032 battery life beyond 18 months in intermittent-sampling mode. |
| Mobile Camera Module | IP Camera Image Sensor |
|
Use Scenario: Provides regulated 1.725 V to CMOS image sensor and ISP in smartphone rear cameras with strict EMI constraints. IC Role / Device Role / Timing Role: Low-noise LDO placed near sensor die to reject digital switching noise from baseband processor. Use Value: Remote capacitor capability allows shared bulk decoupling with other camera subsystems-reducing total capacitor count by 30%. |
Use Scenario: Delivers clean power to high-resolution image sensors and video encoders in outdoor IP cameras operating across –40°C to 85°C ambient. IC Role / Device Role / Timing Role: Post-DC-DC regulator ensuring stable 1.725 V under dynamic load steps caused by auto-exposure and motion detection. Use Value: ±45 mV load transient response and 120 mV dropout enable reliable operation from 12 V PoE-derived 3.3 V rail even at full frame rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F17-DBVR | Same 1.7 V output, 200 mA rating, 15 µA IQ, but only 60 dB PSRR at 1 kHz and requires 2.2 µF output cap. | Limited to lower-current analog rails; unsuitable for 300 mA RF loads or noise-sensitive PLLs. | Select only if board space permits larger output capacitor and system PSRR budget allows 15 dB degradation. |
| MCP1700T-1702E/TT | 1.7 V output, 250 mA, 1.6 µA IQ, but 250 mV dropout at 250 mA and no reverse-current protection. | Better for ultra-low-power MCU cores; cannot support RF loads or battery-backed configurations requiring backflow blocking. | Prefer for sub-200 mA logic rails where quiescent current dominates over noise or dropout; avoid for RF/analog supply. |
Compared with TPL720F17-DBVR and MCP1700T-1702E/TT, LP5910-1.725YKAR uniquely balances 300 mA drive, 12 µVRMS noise, reverse-current blocking, and 120 mV dropout-making it the only option qualified for high-fidelity RF power delivery in miniaturized portable systems.
Availability
LP5910-1.725YKAR is available at Aetrix Electronics and suitable for RF power supplies, portable medical sensors, and IP camera image sensors requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for LP5910-1.725YKAR 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 focused on analog and embedded processing technologies, with leadership in power management ICs and high-reliability signal-chain solutions.
The LP5910 product line was engineered specifically for noise-sensitive RF and analog subsystems in battery-powered devices-emphasizing ultra-low noise, minimal quiescent current, and robust transient response without external compensation.
FAQ
What is the maximum input voltage for LP5910-1.725YKAR?
The absolute maximum input voltage for LP5910-1.725YKAR is 3.6 V, but the recommended operating range is 1.3 V to 3.3 V per the datasheet. Exceeding 3.3 V may degrade long-term reliability or trigger overvoltage protection in some batch variants. LP5910-1.725YKAR maintains regulation and specified PSRR performance only within the 1.3–3.3 V window.
Does LP5910-1.725YKAR require an external bypass capacitor for noise reduction?
No, LP5910-1.725YKAR does not require an external noise bypass capacitor. Its internal architecture achieves 12 µVRMS output noise (10 Hz–100 kHz) without one-verified across all operating conditions in the official TI datasheet SNVSA91F. This eliminates BOM cost and PCB area typically needed for 10-nF to 100-nF ceramic bypass caps.
What is the thermal shutdown threshold of LP5910-1.725YKAR?
LP5910-1.725YKAR activates thermal shutdown at a junction temperature of 160°C (typical), with 15°C hysteresis-meaning it resumes regulation once TJ falls to approximately 145°C. This protection is implemented independently of load current and remains active across the full –40°C to 125°C ambient range specified for LP5910-1.725YKAR.
Can LP5910-1.725YKAR be used with a 0.8 V input supply?
No, LP5910-1.725YKAR cannot operate with a 0.8 V input. Its minimum recommended input voltage is 1.3 V, and the dropout voltage at 300 mA is 120 mV-so the lowest functional input is 1.845 V (1.725 V + 0.12 V). Attempting 0.8 V input will result in complete loss of regulation and undefined behavior in LP5910-1.725YKAR.
Is LP5910-1.725YKAR pin-compatible with other LP5910 variants?
Yes, all LP5910 variants-including LP5910-1.725YKAR-in the YKA (DSBGA-4) package share identical pinout (IN, OUT, GND, EN) and footprint. Output voltage is set internally, so swapping fixed-voltage versions requires no PCB changes, though system-level validation of load transient response and thermal margin is recommended for each specific VOUT.
LP5910-1.725YKAR 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):
- 1.725V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.235V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 25 µA
- Current - Supply (Max):
- 350 µA
- PSRR:
- 80dB ~ 25dB (100Hz ~ 2MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA
LP5910-1.725YKAR FAQ
1.How can I place an order for LP5910-1.725YKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5910-1.725YKAR 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 LP5910-1.725YKAR reliable?
The price and inventory of LP5910-1.725YKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5910-1.725YKAR is usually 5 days.
3.What payment methods are accepted for LP5910-1.725YKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5910-1.725YKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5910-1.725YKAR?
LP5910-1.725YKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5910-1.725YKAR 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 LP5910-1.725YKAR?
For technical support, including LP5910-1.725YKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5910-1.725YKAR requirements.
6.How does Aetrix verify that LP5910-1.725YKAR is sourced from the original manufacturer or authorized distributors?
All LP5910-1.725YKAR 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 LP5910-1.725YKAR meets industry standards.
7.What is the process for return or replacement of LP5910-1.725YKAR?
All LP5910-1.725YKAR units undergo pre-shipment inspection (PSI). If there is an issue with LP5910-1.725YKAR, 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 LP5910-1.725YKAR part is unused and in its original packaging.
Return procedure for LP5910-1.725YKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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