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STMicroelectronics L5150GJ
- Part No.:
- L5150GJ
- Manufacturer:
- STMicroelectronics
- Package:
- PowerSSO-12
- Datasheet:
-
L5150GJ.pdf
- Description:
- IC REG LIN 5V 150MA POWERSSO-12
- Quantity:
- Payment:
- Shipping:
Inventory:2,673
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Product details
Overview
L5150GJ from STMicroelectronics is an AEC-Q100 qualified automotive-grade 5 V low-dropout linear voltage regulator with integrated microprocessor supervisory functions: power-on reset, low-voltage reset, early warning, and enable control. It delivers up to 150 mA output current, maintains ±2% output accuracy over −40 °C to +150 °C junction temperature, and operates from 5.6 V to 40 V input supply - used in engine control units, body control modules, and ADAS domain controllers.
For engineers reviewing the L5150GJ datasheet, L5150GJ pinout, L5150GJ application, or L5150GJ equivalent, key selection criteria include its programmable reset delay (via external capacitor), adjustable reset threshold down to 3.5 V, 5 µA quiescent current in disabled state, thermal shutdown at 150 °C, and compatibility with low-value ceramic output capacitors (≥220 nF) for stability.
Technical Context
The L5150GJ integrates a p-channel MOSFET pass element enabling dropout voltage as low as 500 mV at 150 mA while supporting wide input range (5.6–40 V). Its internal bandgap reference and on-chip trimming ensure ±2% output voltage accuracy across line, load, and temperature variations.
Supervisory circuitry includes three independent functional blocks: a reset generator with externally adjustable threshold (via Res_Adj pin and voltage divider), an early warning comparator monitoring VS through EWi/EWo pins, and an enable input (En) with hysteresis (500 mV) for noise-immune on/off control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 5.0 V ±2% - guaranteed over −40 °C to +150 °C, 5.6–31 V input, 0.1–150 mA load |
| Max input voltage | 40 V DC - supports 24 V automotive systems and transient ride-through per ISO 7637-2 |
| Dropout voltage | ≤500 mV at 150 mA - enables stable regulation even during cold-crank (6.5 V min battery) |
| Quiescent current | 5 µA (disabled), 55 µA (enabled, light load) - meets ultra-low-power requirements for always-on domains |
| Reset threshold | Adjustable from 3.5 V to Vo × 10% via external resistor divider on Res_Adj pin |
| Early warning | Detects input voltage drop before reset activation; outputs open-drain signal on EWo pin |
| Thermal protection | Shuts down at Tj = 150 °C with 10 °C hysteresis - prevents latch-up in high-ambient under-hood environments |
Pinout & Package
Package: PowerSSO-12 (exposed substrate tab), thermally enhanced surface-mount package with 12 terminals and integrated heatsink capability. Rthj-amb = 52 °K/W on 2 cm² copper area (FR4, double-layer).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Res_Adj | Reset threshold adjust | Connects to external voltage divider to set reset point down to 3.5 V; grounded if unused |
| 2 Res | Open-drain reset output | Pulled low when Vo drops below threshold; 20 kΩ internal pull-up to Vo |
| 3 Vcr | Reset timing capacitor | External capacitor sets reset delay time (2–11 ms typical with 1000 pF) |
| 4 GND | Ground reference | Main return path for regulator, reset, and early warning circuits |
| 5 NC | No connect | Not bonded; must remain unconnected on PCB |
| 6 Vo | Regulated 5 V output | Requires ≥220 nF ceramic capacitor to GND for stability |
| 7 VS | Input supply | Accepts 5.6–40 V; requires local bypass capacitor directly to GND |
| 8 NC | No connect | Not bonded; must remain unconnected on PCB |
| 9 En | Enable control input | High (>3 V) enables regulator; hysteresis improves noise immunity |
| 10 EWi | Early warning input | Monitors VS via external resistor divider; triggers EWo when below 2.35–2.65 V |
| 11 NC | No connect | Not bonded; must remain unconnected on PCB |
| 12 EWo | Early warning output | Open-drain output pulled low when EWi falls below threshold; 20 kΩ internal pull-up to Vo |
| TAB | Substrate connection | Internally connected to die substrate; recommended to connect to GND for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for operation from −40 °C to +150 °C ambient, meeting automotive reliability standards |
| Programmable reset delay | Set by external capacitor on Vcr pin (2–11 ms range), eliminating need for external timer ICs |
| Very wide stability margin | Stable with ≥220 nF ceramic output capacitor - reduces BOM cost and board space vs. electrolytic solutions |
| Early warning function | Provides pre-reset alert via EWo pin, enabling graceful system shutdown before brownout |
| Ultra-low quiescent current | 5 µA in disabled state supports >10-year battery life in always-on vehicle modules |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface circuitry in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 5 V supply with integrated reset supervision and early warning for safe engine shutdown during voltage collapse. Use Value: Maintains ±2% regulation during cold-crank (6.5 V) and load dump (40 V), preventing MCU lockup or false resets. |
Use Scenario: Supplies power and reset signaling to door module MCUs, window lift drivers, and lighting controllers. IC Role / Device Role / Timing Role: Regulator + supervisor providing coordinated power-on reset, brownout detection, and wake-up readiness. Use Value: Adjustable reset threshold ensures reliable reset across varying battery states; 55 µA light-load IQ extends sleep-mode battery life. |
| ADAS Domain Controller | Infotainment Head Unit |
|
Use Scenario: Powers vision processor I/O rails and camera interface logic in front-camera or radar fusion units. IC Role / Device Role / Timing Role: Low-noise 5 V source with PSRR >48 dB at 100 Hz and early warning for predictive power sequencing. Use Value: Thermal shutdown at 150 °C protects against under-hood overheating; PowerSSO-12 package enables efficient heat dissipation. |
Use Scenario: Supplies auxiliary 5 V rail to USB host controllers, display timing ICs, and audio codecs in dashboard systems. IC Role / Device Role / Timing Role: Enables/disables subsystems via En pin and provides synchronized reset to multiple ICs using Res output. Use Value: Programmable reset delay avoids race conditions during multi-rail power-up; 20 kΩ internal pull-ups reduce external component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator with reset functions applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST50T3G | Fixed 5 V output, no reset/early warning features, 1.2 A max current, TO-220 package | Requires external reset IC and discrete enable logic; unsuitable for AEC-Q100 systems without additional qualification | Select only for non-automotive, cost-sensitive 5 V regulation where supervisory functions are handled elsewhere |
| TLV73350PDBVR | 5 V fixed LDO, 300 mA, 50 µA IQ, no reset, SOT-23-5 package, not AEC-Q100 qualified | Lacks reset, early warning, and enable inputs; limited thermal performance (Rthj-amb >100 °K/W) | Use only in consumer-grade or non-safety-critical industrial applications requiring minimal footprint and low IQ |
Compared with NCP1117ST50T3G and TLV73350PDBVR, the L5150GJ uniquely integrates AEC-Q100-compliant reset, early warning, and enable functionality in a thermally robust PowerSSO-12 package - eliminating external components and qualification overhead in automotive ECUs and BCMs.
Availability
L5150GJ is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS domain controllers requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 compliance.
Supply support for L5150GJ 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 ICs, with manufacturing and design centers across Europe, Asia, and the Americas.
The L5150GJ belongs to ST's automotive power management portfolio, designed specifically for robust, integrated voltage regulation and system supervision in harsh-temperature vehicle subsystems.
FAQ
What is the minimum input voltage required for regulation at full 150 mA load?
The L5150GJ maintains regulation down to 5.6 V input at 150 mA load, corresponding to a maximum dropout of 500 mV. This allows operation during automotive cold-crank events where battery voltage may dip to 6.5 V, ensuring uninterrupted MCU power and reset integrity.
Can the reset threshold be set below 4.5 V?
Yes - the reset threshold is adjustable from 3.5 V to 10% below nominal Vo (i.e., down to 4.5 V) using an external resistor divider on the Res_Adj pin. The internal reference is trimmed to 2.5 V ±0.15 V, enabling precise sub-4.5 V brownout detection.
Is the TAB (substrate) pin electrically isolated or tied to GND internally?
The TAB is connected to the silicon substrate and is not internally tied to any signal pin. ST recommends connecting it to GND for optimal thermal performance and EMI suppression. Leaving it floating degrades Rthj-amb by ~15 °K/W and increases radiated emissions.
Does the L5150GJ support reverse-battery protection?
No - the L5150GJ lacks integrated reverse-polarity protection. External protection (e.g., series Schottky diode or ideal diode controller) is required if reverse-battery transients (>−18 V) are possible in the application, as absolute maximum rating for VS is −0.3 V.
L5150GJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- PowerSSO-12
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 4.2 mA
- PSRR:
- 48dB (100Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerSSO-12
L5150GJ FAQ
1.How can I place an order for L5150GJ through Aetrix?
Please submit a Request for Quotation (RFQ) for L5150GJ 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 L5150GJ reliable?
The price and inventory of L5150GJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L5150GJ is usually 5 days.
3.What payment methods are accepted for L5150GJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L5150GJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L5150GJ?
L5150GJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L5150GJ 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 L5150GJ?
For technical support, including L5150GJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L5150GJ requirements.
6.How does Aetrix verify that L5150GJ is sourced from the original manufacturer or authorized distributors?
All L5150GJ 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 L5150GJ meets industry standards.
7.What is the process for return or replacement of L5150GJ?
All L5150GJ units undergo pre-shipment inspection (PSI). If there is an issue with L5150GJ, 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 L5150GJ part is unused and in its original packaging.
Return procedure for L5150GJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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