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STMicroelectronics STBP120BVDK6F
- Part No.:
- STBP120BVDK6F
- Manufacturer:
- STMicroelectronics
- Category:
- Power Management - Specialized
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
STBP120BVDK6F.pdf
- Description:
- IC OVP W/THERMAL SHUTDOWN 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,556
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Product details
Overview
STBP120BVDK6F from STMicroelectronics is an overvoltage protection device featuring an integrated 90 mΩ N-channel MOSFET switch, thermal shutdown, soft-start, and active-low open-drain fault indication (FLT). It protects downstream circuits from input overvoltage up to 28 V and undervoltage below 3.25 V, with EN-controlled enable/disable functionality. Used in portable power input stages of smartphones and digital cameras.
For engineers reviewing the STBP120BVDK6F datasheet, STBP120BVDK6F pinout, STBP120BVDK6F application, or STBP120BVDK6F equivalent, this device delivers precise OVLO/UVLO thresholds, junction-temperature–triggered shutdown, and reverse-current–capable MOSFET topology for system connector peripheral powering.
Technical Context
The STBP120BVDK6F implements a self-contained overvoltage protection architecture using an internal charge pump to drive the high-side N-channel MOSFET gate. Its UVLO (3.25 V typ) and OVLO (6.4 V typ) thresholds include hysteresis (50 mV and 200 mV respectively) for noise immunity during transients.
Thermal shutdown activates at TJ = 125 °C with 20 °C hysteresis, and FLT output signals faults (OVLO, UVLO, thermal) with 50 ms startup delay (tstart) and immediate turn-off response. The device supports bidirectional current flow via the MOSFET body diode, enabling OUT-to-IN supply for peripherals when VIN exceeds UVLO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | Up to +28 V DC - enables compatibility with USB PD and legacy wall adapters. |
| RDS(on) | 90 mΩ max at ID = 1 A - minimizes conduction loss and thermal rise under 2 A load. |
| OVLO threshold | 6.4 V typ (±0.2 V) - meets YD/T 1591-2006 overvoltage protection requirement for mobile devices. |
| UVLO threshold | 3.25 V typ (±0.1 V) - ensures stable startup after low-input brownout recovery. |
| FLT output type | Active-low open-drain - allows wired-OR fault signaling and flexible pull-up to controller rail. |
| Soft-start delay (ton) | 50 ms - limits inrush current into downstream capacitive loads during power-up. |
| ESD rating (IN) | ±15 kV air / ±8 kV contact - provides robust front-end ESD immunity without external TVS. |
Pinout & Package
STBP120BVDK6F is housed in a RoHS-compliant 2.5 mm × 2.0 mm × 0.75 mm TDFN-10 package with 0.5 mm pitch and exposed thermal pads (PAD1, PAD2). The package supports high thermal efficiency and compact layout in space-constrained handheld PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 4, 5) | Input supply node | Accepts up to 28 V DC; requires ≥1 µF low-ESR ceramic decoupling capacitor placed adjacent to pins. |
| OUT (Pins 6, 7) | Protected output node | Delivers regulated input voltage to load when MOSFET is on; supports reverse current flow (OUT→IN) for peripheral powering. |
| FLT (Pin 3) | Fault status indicator | Open-drain output pulled low during OVLO, UVLO, or thermal shutdown; Hi-Z otherwise; requires external pull-up (10 kΩ–1 MΩ). |
| EN (Pin 10) | Enable control input | Active-low logic input; no internal pull-down - must be driven or tied to GND; controls MOSFET on/off independently of fault state. |
| GND (Pin 2) | Reference ground | Primary return path for all internal circuitry and power paths; connects to PCB thermal pad for heat dissipation. |
| NC (Pins 1, 8, 9; PAD1, PAD2) | No-connect terminals | Electrically isolated; may be tied to IN or GND for mechanical stability or thermal enhancement - no functional impact. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge pump | Enables full enhancement of high-voltage N-channel MOSFET without external gate driver or bootstrap components. |
| Thermal shutdown with hysteresis | Turns off MOSFET at TJ ≥ 125 °C and re-enables only after TJ ≤ 105 °C - prevents thermal oscillation during overload. |
| Bidirectional current capability | Leverages MOSFET body diode to allow controlled OUT→IN current flow for powering accessories from system connector. |
| Programmable fault reporting | FLT output remains active during all fault conditions (OVLO/UVLO/thermal), independent of EN state - simplifies system-level fault diagnosis. |
| Reverse-current mitigation option | Supports series Schottky diode at OUT to block unwanted reverse current while retaining forward protection function. |
Applications
| Smartphone Power Input Protection | Digital Camera Charging Interface |
|---|---|
Use Scenario: Protects baseband processor and battery charger IC from overvoltage events caused by faulty AC adapters or hot-plug transients during USB charging. IC Role / Device Role / Timing Role: Front-end overvoltage guard between system connector and PMIC; responds within microseconds to OVLO events. Use Value: Prevents catastrophic failure of sensitive 1.2 V/1.8 V logic rails by disconnecting input before voltage exceeds 6.6 V. |
Use Scenario: Secures image sensor and memory subsystem during field charging via mini-USB port exposed to variable-quality third-party chargers. IC Role / Device Role / Timing Role: Standalone OV/UV lockout element upstream of buck converter; asserts FLT to halt charging if input exceeds 6.4 V. Use Value: Eliminates need for discrete TVS + MOSFET solution - reduces BOM count by 3 parts and saves 2.5 mm² PCB area. |
| PDA System Connector Protection | MP3 Player USB Power Path |
Use Scenario: Shields ARM application processor and LPDDR2 memory from voltage surges induced by docking station power negotiation errors. IC Role / Device Role / Timing Role: High-side switch with thermal monitoring; disables output if junction temperature exceeds 125 °C during sustained 1.5 A load. Use Value: Enables safe operation at 85 °C ambient with minimal heatsinking - achieves >1.8 A continuous current on 2-layer FR4. |
Use Scenario: Manages power delivery from PC USB port to audio codec and flash storage during firmware updates. IC Role / Device Role / Timing Role: Reverse-current–enabled protector allowing OUT→IN current to power USB enumeration circuitry before host detection. Use Value: Supports "plug-and-play" accessory detection without auxiliary power source - eliminates need for separate VBUS sense circuit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB542IRWBR | USB 3.1 redriver with integrated 5 V OVLO (6.2 V); no thermal shutdown or FLT output. | Designed for signal integrity, not power path protection; lacks standalone fault reporting. | Select only if USB signal conditioning is primary requirement and OVLO is secondary. |
| TPD3S014TDCR | USB port protector with 5.5 V OVLO, ±15 kV ESD, but uses external MOSFET and no thermal shutdown. | Requires external high-side switch and thermal sensing circuit - increases design complexity. | Choose when lower cost is critical and board space allows discrete implementation. |
Compared with TUSB542IRWBR and TPD3S014TDCR, STBP120BVDK6F uniquely integrates OVLO, UVLO, thermal shutdown, soft-start, and FLT reporting in a single TDFN-10 package - eliminating external components while delivering deterministic fault behavior across voltage and temperature domains.
Availability
STBP120BVDK6F is available at Aetrix Electronics and suitable for smartphone power input protection, digital camera charging interfaces, and PDA system connector safeguarding requiring stable component supply and long-term industrial availability.
Supply support for STBP120BVDK6F 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 headquartered in Geneva, Switzerland, specializing in power management, analog, MCU, and automotive-grade ICs with broad industrial and consumer reach.
STBP120BVDK6F belongs to ST's Overvoltage Protection Devices product line, engineered specifically for compact, high-reliability front-end power protection in battery-powered portable electronics subject to unregulated adapter inputs.
FAQ
Does STBP120BVDK6F support reverse current flow from OUT to IN?
Yes - its N-channel MOSFET topology allows bidirectional conduction via the intrinsic body diode. When OUT voltage exceeds IN by >0.7 V and IN rises above UVLO (3.25 V), the MOSFET turns on after 50 ms, reducing forward drop to <180 mV at 1 A. This enables powering peripherals from the system connector without additional circuitry.
What is the minimum recommended input capacitance for STBP120BVDK6F?
A minimum 1 µF low-ESR ceramic capacitor must be placed directly between IN and GND, as close as possible to pins 4 and 5. This capacitor stabilizes input voltage during transient events, suppresses ESD energy, and ensures reliable UVLO/OVLO detection. Larger values (e.g., 4.7 µF) improve surge immunity but do not affect core protection timing.
How does the FLT output behave when EN is high (device disabled)?
The FLT output remains fully functional and independent of EN state: it drives low during OVLO, UVLO, or thermal shutdown regardless of EN level. When EN = high and no fault exists, FLT stays in Hi-Z. This allows continuous fault monitoring even during standby - critical for systems requiring fail-safe diagnostics.
Can STBP120BVDK6F be used in automotive infotainment power supplies?
No - STBP120BVDK6F is qualified for commercial temperature range (−40 °C to +85 °C) and lacks AEC-Q100 qualification, automotive-grade ESD (±25 kV), or extended OVLO tolerance required for 12 V battery systems. It is designed exclusively for portable consumer electronics with regulated 5 V input domains.
STBP120BVDK6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Overload Protection
- Current - Supply:
- 170µA
- Voltage - Supply:
- 1.2V ~ 28V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (2.5x2.0)
STBP120BVDK6F FAQ
1.How can I place an order for STBP120BVDK6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STBP120BVDK6F 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 STBP120BVDK6F reliable?
The price and inventory of STBP120BVDK6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STBP120BVDK6F is usually 5 days.
3.What payment methods are accepted for STBP120BVDK6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STBP120BVDK6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STBP120BVDK6F?
STBP120BVDK6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STBP120BVDK6F 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 STBP120BVDK6F?
For technical support, including STBP120BVDK6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STBP120BVDK6F requirements.
6.How does Aetrix verify that STBP120BVDK6F is sourced from the original manufacturer or authorized distributors?
All STBP120BVDK6F 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 STBP120BVDK6F meets industry standards.
7.What is the process for return or replacement of STBP120BVDK6F?
All STBP120BVDK6F units undergo pre-shipment inspection (PSI). If there is an issue with STBP120BVDK6F, 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 STBP120BVDK6F part is unused and in its original packaging.
Return procedure for STBP120BVDK6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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