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STMicroelectronics GS-R12F0002.0
- Part No.:
- GS-R12F0002.0
- Manufacturer:
- STMicroelectronics
- Category:
- DC DC Converters
- Package:
- 12-SMD Module
- Datasheet:
-
GS-R12F0002.0.pdf
- Description:
- DC DC CONVERTER 1.235-5.5V
- Quantity:
- Payment:
- Shipping:
Inventory:446
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Product details
Overview
GS-R12F0002.0 from STMicroelectronics is a 2 A, adjustable-output synchronous step-down DC-DC converter module based on the L5973 controller, delivering 1.235 V to 5.5 V output with ±4 % accuracy, 225–275 kHz switching frequency, and 68–85 % efficiency across 4.5–15 V input. It integrates remote inhibit, synchronization, thermal shutdown, and non-latching overload protection for telecom and industrial distributed power systems.
For engineers reviewing the GS-R12F0002.0 datasheet, GS-R12F0002.0 pinout, GS-R12F0002.0 application, or GS-R12F0002.0 equivalent, this page provides verified technical context, pin-level design meaning, real-world application mapping, and validated alternative options for adjustable-output 2 A buck modules operating up to 85 °C ambient.
Technical Context
This module implements a fixed-frequency current-mode PWM control architecture using an internal PDMOS power stage and external inductor-capacitor output filter. Feedback is taken from the FB pin referenced to a precise 1.235 V internal bandgap, enabling programmable output via resistor divider between Vout and FB.
It supports master/slave synchronization via the Sync pin, features pulse-by-pulse overcurrent limiting with frequency foldback, and includes integrated thermal shutdown with ~20 °C hysteresis triggered at ≥150 °C junction temperature - all without requiring heatsink or external compensation under standard loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage range | 1.235 V to 5.5 V (adjustable via external resistor on FB pin; 1.235 V = short, 5.54 V = open) |
| Max output current | 2 A continuous (derates to 1.45 A at 85 °C ambient; no heatsink required) |
| Input voltage range | 4.5 V to 15 V DC (16 V absolute max; ripple included in rating) |
| Switching frequency | 225–275 kHz (synchronizable via Sync pin; enables EMI control in multi-module designs) |
| Feedback reference | 1.235 V ±1.2 % (internal precision bandgap; sets output via R-divider on FB) |
| Efficiency range | 68–85 % (varies with Vin, Vout, and load; peak at 5 V out / 12 V in) |
| Thermal shutdown | Activates at ≥150 °C junction; ~20 °C hysteresis prevents cycling |
Pinout & Package
GS-R12F0002.0 uses a 12-pin, surface-mount, thermally enhanced module package with dual input/output power planes and exposed thermal pad (mechanical footprint per Figure 6, datasheet p.10). Pin layout is standardized across GS-R12F series.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INH) | Inhibit control input | Logic-high (>2.2 V) disables regulator; internal pull-up ensures disable if floating; <100 µA standby current when inhibited |
| 2 (Vref) | 3.3 V reference output | Stable 3.3 V ±2 % source (3.234–3.366 V); usable for external bias or sensing; no capacitor required |
| 3,4 (Input +) | Positive DC input terminals | Parallel high-current paths for 4.5–15 V input; minimize IR drop and noise coupling |
| 5,6 (Input GND) | Input return terminals | Dedicated low-inductance ground return for input stage; separate from output ground |
| 7,8 (Output GND) | Output return terminals | Isolated ground path for regulated output; critical for feedback stability and noise rejection |
| 9,10 (Vout) | Regulated output terminals | Parallel high-current outputs delivering 1.235–5.5 V; connect external R-divider here for adjustment |
| 11 (FB) | Feedback input | Senses output via resistor divider; 1.235 V threshold sets Vout = 1.235 × (1 + R1/R2); enables loop compensation |
| 12 (Sync) | Frequency synchronization | Accepts or outputs 225–275 kHz clock; connects to other GS-R12F units to eliminate beat frequencies |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | 1.235 V to 5.5 V set by single external resistor between FB and Vout - no DAC or digital interface needed |
| Non-latching overload protection | Recovery after fault without power cycle; combines pulse-by-pulse current limit and frequency foldback |
| Remote enable/disable | INH pin accepts logic-level control or open-circuit (default disabled); reduces quiescent current to <100 µA |
| Multi-unit synchronization | Sync pin allows >1 module to operate at identical frequency and phase-aligned edges - eliminates beat tones and EMI peaks |
| Integrated thermal protection | On-die temperature sensor adjacent to PDMOS; fast response with 20 °C hysteresis avoids thermal oscillation |
Applications
| Telecom Line Card Power | Industrial PLC I/O Module |
|---|---|
Use Scenario: Providing isolated 3.3 V or 5 V rails for FPGA configuration, SERDES transceivers, and management MCU on carrier-grade line cards. IC Role / Device Role / Timing Role: Primary point-of-load (POL) buck regulator replacing linear regulators to reduce heat and improve efficiency in dense board layouts. Use Value: Delivers 2 A at 85 % efficiency with <20 mVpp ripple - meets Telcordia GR-63-CORE transient and noise requirements without added filtering. | Use Scenario: Generating 2.5 V or adjustable 1.8 V supply for analog front-end ADCs and isolated digital I/O drivers in modular PLC backplanes. IC Role / Device Role / Timing Role: Adjustable-output POL regulator supporting multiple voltage domains from shared 12 V intermediate bus. Use Value: Programmable output eliminates BOM variants; thermal shutdown and sync capability ensure reliability in convection-cooled enclosures. |
| Embedded Computer SoM | Distributed Data Acquisition Node |
Use Scenario: Supplying core voltage (1.2–1.5 V) and I/O voltage (3.3 V) to ARM-based system-on-module in fanless edge gateway devices. IC Role / Device Role / Timing Role: Compact, thermally robust buck module enabling high-density power delivery within strict height constraints. Use Value: No heatsink required; operates continuously at 85 °C ambient - simplifies mechanical design and lowers system cost. | Use Scenario: Powering low-noise op-amps, precision references, and microcontrollers in battery-backed environmental sensor nodes. IC Role / Device Role / Timing Role: Efficient, low-quiescent-current POL regulator with remote inhibit for sleep/wake power gating. Use Value: <100 µA standby current during deep-sleep mode extends battery life; FB pin enables accurate low-voltage regulation down to 1.235 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output 2 A buck module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS54227 | 2 A synchronous buck; 4.5–18 V input; 0.76 V–7 V output; requires external compensation; 600 kHz fixed freq | Higher switching frequency enables smaller magnetics but increases EMI sensitivity; no built-in sync or thermal pad | Preferred where PCB area is constrained and higher frequency is acceptable; lacks integrated thermal monitoring |
| Analog Devices LT8610AC | 2.5 A synchronous buck; 3–42 V input; 0.97 V–20 V output; 2 MHz freq; integrated MOSFETs; spread-spectrum option | Wider input range and higher current; spread-spectrum reduces peak EMI; no Vref pin or dedicated sync | Best for harsh-input environments (e.g., 24 V industrial bus); requires more complex layout due to high dv/dt |
Compared with TPS54227 and LT8610AC, GS-R12F0002.0 offers simpler implementation for 12 V intermediate bus systems, built-in thermal protection with hysteresis, and native multi-module synchronization - reducing design risk in telecom and PLC applications where reliability and EMI coexistence are critical.
Availability
GS-R12F0002.0 is available at Aetrix Electronics and suitable for telecom line card power, industrial PLC I/O modules, and embedded computer SoM designs requiring stable component supply, long-life availability, and proven thermal performance up to 85 °C ambient.
Supply support for GS-R12F0002.0 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, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and communications markets.
The GS-R12F series belongs to ST's high-reliability DC-DC module product line, engineered specifically to replace inefficient linear regulators in space-constrained, thermally demanding telecom and industrial power systems.
FAQ
What is the minimum output voltage achievable with GS-R12F0002.0?
The GS-R12F0002.0 achieves a minimum output voltage of 1.235 V, defined by its internal feedback reference voltage. This value is fixed and cannot be lowered further - it corresponds to shorting the FB pin directly to Vout (Rv = 0 Ω), as specified in section 4.7 of the datasheet.
Can GS-R12F0002.0 synchronize with modules from other manufacturers?
No - the Sync pin is designed exclusively for inter-device synchronization among GS-R12F-series modules. Its timing and voltage thresholds (−0.3 V to 4 V) are not guaranteed compatible with third-party sync interfaces, and ST does not specify interoperability outside its own family.
Is external loop compensation mandatory for GS-R12F0002.0?
No - the module is internally compensated and stable with standard output capacitors. External compensation (capacitor between FB and Vout) is optional and only recommended for unusual load conditions such as very low ESR ceramic arrays or highly dynamic current steps, per section 4.8 of the datasheet.
Does GS-R12F0002.0 support negative output voltages?
No - the GS-R12F0002.0 is a non-isolated buck (step-down) regulator with a fixed ground-referenced topology. It cannot generate negative outputs; its output is always positive relative to its Output GND pins (7 and 8), and no inverting configuration is supported.
GS-R12F0002.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- GS-R12F
- Package/Case:
- 12-SMD Module
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 15V
- Voltage - Output 1:
- 1.235 ~ 5.5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 2A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Remote On/Off, OCP, OTP, OVP
- Operating Temperature:
- -25°C ~ 85°C
- Efficiency:
- 85%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
GS-R12F0002.0 FAQ
1.How can I place an order for GS-R12F0002.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for GS-R12F0002.0 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 GS-R12F0002.0 reliable?
The price and inventory of GS-R12F0002.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS-R12F0002.0 is usually 5 days.
3.What payment methods are accepted for GS-R12F0002.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS-R12F0002.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GS-R12F0002.0?
GS-R12F0002.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GS-R12F0002.0 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 GS-R12F0002.0?
For technical support, including GS-R12F0002.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS-R12F0002.0 requirements.
6.How does Aetrix verify that GS-R12F0002.0 is sourced from the original manufacturer or authorized distributors?
All GS-R12F0002.0 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 GS-R12F0002.0 meets industry standards.
7.What is the process for return or replacement of GS-R12F0002.0?
All GS-R12F0002.0 units undergo pre-shipment inspection (PSI). If there is an issue with GS-R12F0002.0, 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 GS-R12F0002.0 part is unused and in its original packaging.
Return procedure for GS-R12F0002.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GS-R12F0002.0 Tags
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1S4E_0505S1.5U
GAPTEC Electronic
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TPS631000DRLR
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XCL209F083DR
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SC202AMLTRT
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NME1S0505SC
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XCL101A501ER-G
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RFM-0505S
Recom Power
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TEA 1-0505E
Traco Power
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MIC33153YHJ-TR
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TEA 1-0505
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TPSM863252RDXR
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RFB-0505S
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