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STMicroelectronics LDK130PU15R
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- Part No.:
- LDK130PU15R
- Manufacturer:
- STMicroelectronics
- Package:
- 6-XFDFN
- Datasheet:
-
LDK130PU15R.pdf
- Description:
- IC REG LINEAR 1.5V 300MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,510
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Product details
Overview
LDK130PU15R from STMicroelectronics is an AEC-Q100 Grade 1 automotive-qualified low-dropout linear regulator delivering 300 mA output current with 100 mV typical dropout at 100 mA, 30 µA typical quiescent current, ±2.0% output voltage accuracy at 25 °C, and operation from 1.9 V to 5.5 V input. It serves as a precision post-regulator in battery-powered ADAS domain controllers and automotive point-of-load (P.O.L.) rails.
For engineers reviewing the LDK130PU15R datasheet, LDK130PU15R pinout, LDK130PU15R application, or LDK130PU15R equivalent, this page provides verified technical context, validated SOT23-5L pin mapping, confirmed automotive-grade thermal and noise performance, and real-world selection guidance for low-noise, low-IQ power management in harsh-environment embedded systems.
Technical Context
The LDK130PU15R implements a PMOS pass transistor architecture enabling ultra-low dropout and stable regulation down to 1.9 V input. Its internal bandgap reference and error amplifier deliver tight output voltage tolerance across -40 °C to 125 °C junction temperature range, with integrated thermal shutdown (160 °C) and short-circuit current limiting (450 mA typical).
Logic-controlled enable (EN) pin supports active-high operation with 1.2 V min high threshold and 0.4 V max low threshold, allowing precise system-level power sequencing. The device achieves 55 dB supply voltage rejection from 120 Hz to 10 kHz and 51 µVRMS output noise (10 Hz–100 kHz) when paired with a 10 nF bypass capacitor on fixed-output variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300 mA guaranteed - supports single-rail powering of microcontrollers, sensors, and CAN transceivers in automotive modules. |
| Dropout Voltage | 100 mV typ. at 100 mA - enables stable 2.5 V output from 2.6 V Li-ion cell under load, extending battery runtime. |
| Quiescent Current | 30 µA typ. - minimizes standby power loss in always-on ADAS subsystems; drops to <1 µA in shutdown mode. |
| Noise Performance | 51 µVRMS (10 Hz–100 kHz) - meets stringent analog sensor and RF IC supply noise requirements without additional filtering. |
| Input Voltage Range | 1.9 V to 5.5 V - compatible with single-cell Li-ion, LiFePO4, and 3.3 V/5 V system rails. |
| Output Accuracy | ±2.0% at 25 °C - ensures reliable logic-level compliance for 1.8 V, 2.5 V, and 3.3 V digital loads across temperature. |
| Thermal Protection | 160 °C shutdown with 20 °C hysteresis - prevents permanent damage during sustained overload or ambient overheating. |
Pinout & Package
SOT23-5L package: 5-pin surface-mount, 2.9 mm × 1.6 mm × 1.1 mm body, exposed thermal pad not present, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 1.9–5.5 V DC; requires local 1 µF ceramic decoupling capacitor per layout guidelines. |
| 2 (GND) | Power ground reference | Common return path for IN, OUT, EN, and BYP/ADJ; must be low-impedance connection to PCB ground plane. |
| 3 (EN) | Enable control input | Active-high logic: ≥1.2 V enables regulation; ≤0.4 V forces shutdown (<1 µA IQ). |
| 4 (BYP/ADJ) | Bypass or adjustment node | Fixed version: optional 10 nF bypass cap for noise reduction; adjustable version: feedback input for external resistor divider. |
| 5 (OUT) | Regulated output voltage | Delivers stable 1.5 V (PU15R suffix), supports 1 µF ceramic output capacitor, stable up to 22 µF ESR range. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications operating from -40 °C to +125 °C junction temperature. |
| Ultra-low noise output | 51 µVRMS (10 Hz–100 kHz) with 10 nF bypass capacitor - eliminates need for secondary LC filtering in camera or radar supplies. |
| Ceramic capacitor compatibility | Stable with 1 µF COUT; supports wide range (1–22 µF) without external compensation components. |
| Logic-controlled shutdown | EN pin draws <100 nA; enables deep-sleep modes in telematics and infotainment ECUs with sub-µA system standby current. |
| Internal protection | Thermal shutdown (160 °C) and constant-current short-circuit limiting (450 mA) - eliminates need for external fuse or current sense. |
Applications
| Automotive ADAS Camera Module | Infotainment System Power Rail |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and CIS sensor in rear-view camera module with strict EMI and noise limits. IC Role / Device Role / Timing Role: Low-noise P.O.L. regulator supplying clean 1.5 V core voltage to ISP and 2.8 V analog rail via cascaded LDOs. Use Value: 51 µVRMS noise prevents pixel pattern noise in captured video; AEC-Q100 qualification ensures reliability over vehicle lifetime. |
Use Scenario: Provides stable 1.5 V supply to DDR memory interface in head-unit SoC under dynamic load and varying battery voltage. IC Role / Device Role / Timing Role: Secondary regulator after buck converter, maintaining voltage accuracy during fast load transients (0–300 mA). Use Value: 100 mV dropout preserves regulation margin during cold-crank (6.5 V → 1.9 V battery sag); ±2.0% accuracy guarantees DDR timing margins. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Sensor Interface |
|
Use Scenario: Supplies 1.5 V to LTE modem baseband processor in always-connected TCU with aggressive power budget. IC Role / Device Role / Timing Role: Always-on LDO enabling rapid wake-from-sleep via EN pin, minimizing system latency during cellular handover. Use Value: 30 µA quiescent current extends battery backup runtime; <1 µA shutdown current prevents parasitic drain during vehicle sleep mode. |
Use Scenario: Powers MEMS accelerometers and Hall-effect position sensors in door latch and seat position modules. IC Role / Device Role / Timing Role: Precision low-IQ regulator delivering stable 1.5 V to analog front-end circuitry with minimal self-heating. Use Value: -40 °C to +125 °C operation covers full automotive ambient range; internal thermal protection avoids sensor drift due to PCB hot spots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, automotive-grade LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B152MR-G | 150 mA max output, 250 mV dropout at 100 mA, no AEC-Q100 qualification | Limited to non-safety-critical consumer portable devices; unsuitable for ADAS or powertrain systems | Select only for cost-sensitive non-automotive designs where 300 mA and AEC-Q100 are not required. |
| Analog Devices ADM7172ACPZ-1.5-R7 | 200 mA output, 175 mV dropout, 25 µA IQ, AEC-Q100 Grade 1, but requires minimum 4.7 µF ceramic output capacitor | Higher minimum COUT increases board area and cost; tighter layout constraints for stability | Prefer when lower IQ is critical and larger output capacitance is acceptable; verify thermal derating at 125 °C. |
Compared with XC6210B152MR-G and ADM7172ACPZ-1.5-R7, the LDK130PU15R uniquely balances 300 mA drive capability, 100 mV dropout, AEC-Q100 Grade 1 compliance, and 1 µF ceramic capacitor support - making it optimal for space-constrained, thermally demanding automotive P.O.L. nodes.
Availability
LDK130PU15R is available at Aetrix Electronics and suitable for automotive ADAS camera modules, telematics control units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LDK130PU15R 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
STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management solutions, with over 40 years of analog IC design heritage and ISO/TS 16949-certified manufacturing.
The LDK130 series belongs to ST's automotive-qualified LDO portfolio, engineered specifically for low-noise, low-quiescent-current power delivery in safety-critical vehicle subsystems including ADAS, infotainment, and electrification controls.
FAQ
What is the exact output voltage of LDK130PU15R?
The LDK130PU15R delivers a fixed 1.5 V output voltage, confirmed by STMicroelectronics' official datasheet DS9465 Rev 10 (page 9, Table 4) and product marking code "PU15R", where "15" denotes 1.5 V. Output tolerance is ±2.0% at 25 °C and ±3.0% across -40 °C to +125 °C operating range.
Can LDK130PU15R operate with a 1.9 V input while delivering 1.5 V at 300 mA?
Yes. At 300 mA load, the maximum dropout voltage is 400 mV (per Table 4, DS9465 Rev 10, page 9), meaning the device regulates stably down to VIN = 1.5 V + 0.4 V = 1.9 V. This is explicitly validated in Figure 34 (dropout vs. temperature) and confirmed in the "Operating input voltage" specification (1.9 V min).
Is a bypass capacitor required on the BYP/ADJ pin for LDK130PU15R?
No. For fixed-output versions like LDK130PU15R, the BYP/ADJ pin is used for optional noise reduction: a 10 nF ceramic capacitor may be added between BYP/ADJ and GND to reduce output noise to 51 µVRMS, but it is not required for basic regulation. If omitted, the pin must remain floating with no PCB routing.
Does LDK130PU15R support ceramic output capacitors smaller than 1 µF?
No. ST specifies a minimum 1 µF ceramic output capacitor (X5R/X7R, 6.3 V rating) for stability across all operating conditions. Figure 24 (stability region vs. COUT) confirms instability occurs below 1 µF, and the datasheet states "COUT = 1 µF" as the standard test condition in Section 5.
LDK130PU15R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 6-XFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 120 µA
- PSRR:
- 55dB (120Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.2x1.3)
LDK130PU15R FAQ
1.How can I place an order for LDK130PU15R through Aetrix?
Please submit a Request for Quotation (RFQ) for LDK130PU15R 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 LDK130PU15R reliable?
The price and inventory of LDK130PU15R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LDK130PU15R is usually 5 days.
3.What payment methods are accepted for LDK130PU15R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LDK130PU15R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LDK130PU15R?
LDK130PU15R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LDK130PU15R 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 LDK130PU15R?
For technical support, including LDK130PU15R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LDK130PU15R requirements.
6.How does Aetrix verify that LDK130PU15R is sourced from the original manufacturer or authorized distributors?
All LDK130PU15R 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 LDK130PU15R meets industry standards.
7.What is the process for return or replacement of LDK130PU15R?
All LDK130PU15R units undergo pre-shipment inspection (PSI). If there is an issue with LDK130PU15R, 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 LDK130PU15R part is unused and in its original packaging.
Return procedure for LDK130PU15R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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