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STMicroelectronics STCF07PNR
- Part No.:
- STCF07PNR
- Manufacturer:
- STMicroelectronics
- Category:
- LED Drivers
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
STCF07PNR.pdf
- Description:
- IC LED DRIVER RGLTR 1A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,027
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Product details
Overview
STCF07PNR from STMicroelectronics is a high-power buck-boost white LED driver IC designed for camera flash applications in mobile phones. It delivers up to 1 A output current in flash mode and 800 mA continuously, operates at 1.8 MHz fixed-frequency PWM, integrates NTC-based LED temperature protection, and features synchronous rectification with peak inductor current limiting at 2.3 A (typ.).
For engineers reviewing the STCF07PNR datasheet, STCF07PNR pinout, STCF07PNR application, or STCF07PNR equivalent, this page provides verified technical context on buck-boost topology behavior across battery voltage ranges (2.7–5.5 V), dual-mode current programming (via CSEL), overvoltage (5.3 V) and thermal (140 °C) protection thresholds, and QFN16 package layout constraints.
Technical Context
The STCF07PNR implements a synchronous buck-boost DC-DC converter with automatic mode switching between buck (VOUT < VBAT), boost (VOUT > VBAT), and buck-boost transition regions based on LED forward voltage and battery level. Its regulation relies on two feedback paths-FB1 for low-current mode (20–800 mA) and FB2S for high-current mode (up to 1 A)-selected via the CSEL pin.
Protection logic includes peak inductor current limiting (2.3 A typ.), overvoltage shutdown (5.3 V threshold with 0.3 V hysteresis), thermal shutdown (140 °C trip, 120 °C recovery), and undervoltage lockout (2.2 V). The FAULT pin asserts low during LED disconnection, short-circuit, or UVLO events, while soft-start limits inrush current with ≤2 ms LED current rise time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Synchronous buck-boost DC-DC converter with automatic mode selection |
| Output current | Up to 1 A in flash mode; 800 mA continuous; adjustable via RHC/RLC resistors |
| Switching frequency | 1.8 MHz (typ.) fixed PWM - enables compact external components and minimizes EMI |
| Input voltage range | 2.7 V to 5.5 V - compatible with single-cell Li-ion batteries across full discharge curve |
| Output voltage range | 2.5 V to 5.3 V - supports white LEDs with VF from 2.7 V to 5.0 V |
| Efficiency | 85% (typ.) at VI = 3.2–4.2 V, IO = 800 mA - reduces thermal load in space-constrained modules |
| Thermal protection | Junction shutdown at 140 °C with 20 °C hysteresis - prevents permanent damage during sustained high-power operation |
| Shutdown current | ≤1 µA - preserves battery life when flash is inactive |
Pinout & Package
STCF07PNR is housed in a thermally enhanced QFN16 (4 mm × 4 mm × 1 mm) package with exposed PGND pad for optimal thermal dissipation and electrical grounding. Pin numbering follows top-view orientation per Figure 2 of Doc ID 16757 Rev 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VLX1A / VLX1B | Inductor connection 1 | High-current path for primary inductor winding; requires low-inductance PCB routing |
| VLX2 | Inductor connection 2 | Second inductor node for buck-boost energy transfer; shares current path with VLX1A/B |
| VOUT | Regulated output voltage | Drives LED anode; voltage regulated between 2.5 V and 5.3 V depending on LED VF and mode |
| FB1 / FB2 / FB2S | Current-sense feedback inputs | FB1 used in low-current mode; FB2S active in high-current mode with internal shorting transistor |
| CSEL | Current mode select | Logic-high selects high-current mode (1 A); logic-low selects low-current mode (20 mA min) |
| FAULT | Open-drain diagnostic output | Pulled low during LED open/short, overtemperature, or UVLO; requires external pull-up |
| ENABLE | Active-high enable input | No internal pull; must be driven externally to control device power state |
| NTC / RX | LED temperature sensing interface | Supports external NTC resistor divider; RX sets reference threshold for thermal cutoff |
| PGND / GND | Power and signal ground | Separate pins minimize noise coupling; exposed pad must connect directly to PGND plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode current programming | Independent resistor networks (RHC for high mode, RHC+RLC for low mode) enable precise, application-specific LED current tuning |
| NTC-based LED thermal protection | Configurable cutoff using external NTC and RX resistor; disables output when LED exceeds safe temperature threshold |
| Automatic buck/boost mode transition | Seamlessly switches topology based on real-time VOUT vs. VBAT relationship - eliminates manual configuration |
| Integrated short-circuit and overvoltage protection | OVP triggers at 5.3 V with 0.3 V hysteresis; short-circuit detection halts switching before inductor saturation |
| Low-noise soft-start | Controls LED current ramp with ≤2 ms rise time - prevents battery voltage sag and system reset during flash activation |
Applications
| Mobile Phone Camera Flash | Industrial Inspection Lighting |
|---|---|
Use Scenario: High-intensity illumination for smartphone rear/front cameras during low-light capture. IC Role / Device Role / Timing Role: Buck-boost LED driver delivering 1 A pulsed current with <2 ms turn-on for synchronized flash timing. Use Value: Maintains consistent luminance across battery voltage decay (2.7–4.2 V), eliminating brightness drop in partially discharged devices. | Use Scenario: Portable handheld inspection tools requiring stable, high-brightness white light for surface defect detection. IC Role / Device Role / Timing Role: Continuous-mode LED driver supplying 800 mA with thermal foldback to prevent LED degradation during extended use. Use Value: NTC-based temperature monitoring ensures LED junction stays within safe operating limits even under ambient temperatures up to 85 °C. |
| Automotive Interior Lighting | Medical Diagnostic Devices |
Use Scenario: Cabin lighting modules where compact size and wide input range accommodate vehicle battery fluctuations (9–16 V with DC-DC pre-regulation). IC Role / Device Role / Timing Role: Secondary LED driver stage accepting regulated 3.3–5.5 V input, providing precise current control independent of upstream supply ripple. Use Value: 1.8 MHz switching allows use of small 0603/0805 passive components, reducing board area by >30% versus lower-frequency alternatives. | Use Scenario: Ophthalmic imaging systems requiring flicker-free, calibrated white light for retinal examination. IC Role / Device Role / Timing Role: Precision current source with <±5% regulation accuracy over temperature and input voltage, referenced to internal 160 mV bandgap. Use Value: Dual feedback architecture (FB1/FB2S) enables sub-1% current matching between multiple STCF07PNR units in multi-LED arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61310DRCR | Boost-only topology; no buck capability; max 1.2 A output; 2.5 MHz switching | Limited to applications where VOUT always exceeds VBAT; cannot regulate below battery voltage | Select only if LED VF consistently >4.5 V and battery remains ≥3.6 V; lacks NTC interface and dual-mode current control |
| MAX16832ATP+ | Buck-boost with analog dimming; 2.2 MHz; no integrated NTC support; requires external thermal management | Relies on external thermal sensor and control logic; higher BOM count and layout complexity | Prefer when analog dimming resolution >10-bit is required; not suitable for space-constrained mobile flash modules |
Compared with TPS61310DRCR and MAX16832ATP+, STCF07PNR uniquely combines true buck-boost operation, integrated NTC temperature sensing, dual programmable current modes, and QFN16 packaging optimized for mobile flash - enabling smaller footprint, simpler thermal design, and wider battery voltage compatibility without external supervision logic.
Availability
STCF07PNR is available at Aetrix Electronics and suitable for mobile phone camera flash, industrial inspection lighting, and automotive interior lighting requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for STCF07PNR 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, microcontrollers, and sensors for industrial, automotive, and consumer markets.
The STCF07 product line targets compact, high-efficiency LED driving solutions for portable imaging systems, emphasizing integration of protection, thermal management, and battery-voltage-agnostic regulation in minimal footprint packages.
FAQ
What is the maximum allowable LED forward voltage supported by STCF07PNR?
The STCF07PNR supports LED forward voltages from 2.7 V to 5.0 V, with regulated output voltage ranging from 2.5 V to 5.3 V. Its buck-boost architecture ensures stable current delivery regardless of whether VOUT is above or below input voltage, making it compatible with standard white LEDs across full VF spread and temperature variation.
How does the CSEL pin affect current regulation accuracy and thermal performance?
When CSEL is high, the device uses FB2S to sense voltage across RHC only, enabling high-current mode with 160 mV reference and reduced sensing error. When CSEL is low, FB1 senses across RHC + RLC, increasing effective sense resistance and lowering current sensitivity - improving low-current stability and reducing self-heating in standby illumination modes.
Can STCF07PNR operate without an external NTC thermistor?
Yes. If LED temperature monitoring is not required, the NTC pin must be left floating and the RX pin grounded per datasheet Section 8.6.4. All other protections - overvoltage, overtemperature, short-circuit, and UVLO - remain fully functional. No firmware or configuration change is needed.
What is the recommended minimum PCB copper area for the exposed pad on the QFN16 package?
The exposed pad (PGND) must connect to a dedicated thermal pad on the PCB bottom layer using ≥6 vias (0.3 mm diameter) to an internal or bottom-layer ground plane. STMicroelectronics recommends a minimum 12 mm² copper area directly beneath the pad, extended with thermal relief traces to maximize heat dissipation and maintain junction temperature ≤85 °C at 800 mA continuous load.
STCF07PNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 2.5V ~ 5.3V
- Current - Output / Channel:
- 1A (Flash)
- Frequency:
- 1.8MHz
- Dimming:
- -
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
STCF07PNR FAQ
1.How can I place an order for STCF07PNR through Aetrix?
Please submit a Request for Quotation (RFQ) for STCF07PNR 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 STCF07PNR reliable?
The price and inventory of STCF07PNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STCF07PNR is usually 5 days.
3.What payment methods are accepted for STCF07PNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STCF07PNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STCF07PNR?
STCF07PNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STCF07PNR 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 STCF07PNR?
For technical support, including STCF07PNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STCF07PNR requirements.
6.How does Aetrix verify that STCF07PNR is sourced from the original manufacturer or authorized distributors?
All STCF07PNR 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 STCF07PNR meets industry standards.
7.What is the process for return or replacement of STCF07PNR?
All STCF07PNR units undergo pre-shipment inspection (PSI). If there is an issue with STCF07PNR, 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 STCF07PNR part is unused and in its original packaging.
Return procedure for STCF07PNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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