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STMicroelectronics SG2525AP013TR
- Part No.:
- SG2525AP013TR
- Manufacturer:
- STMicroelectronics
- Category:
- DC DC Switching Controllers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SG2525AP013TR.pdf
- Description:
- IC REG CTRLR BCK/PSH-PULL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
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Product details
Overview
SG2525AP013TR from STMicroelectronics is a dual-output PWM controller IC designed for switch-mode power supply (SMPS) control in push-pull, half-bridge, and full-bridge topologies. It features a trimmed 5.1 V ±1% reference, 100 Hz–400 kHz oscillator range, adjustable deadtime via external resistor, internal soft-start, and pulse-by-pulse shutdown. Used in industrial DC-DC converters requiring precise duty-cycle control and robust fault handling.
For engineers reviewing the SG2525AP013TR datasheet, SG2525AP013TR pinout, SG2525AP013TR application, or SG2525AP013TR equivalent, key selection criteria include oscillator frequency stability over input voltage (±0.3% to ±1%), latch-enabled PWM shutdown response (<0.5 µs), output drive capability (>200 mA sink/source), and undervoltage lockout with 500 mV hysteresis.
Technical Context
The SG2525AP013TR implements a fixed-frequency, current-mode-capable PWM architecture with an error amplifier whose common-mode input range includes the internal 5.1 V reference-eliminating external level-shifting resistors. Its oscillator supports synchronization via dedicated SYNC pin and allows wide deadtime adjustment using a single resistor between CT and DISCHARGE pins.
It integrates a latching comparator that holds outputs low for the full oscillator period after any shutdown event, preventing multiple pulses per cycle. Output drivers use totem-pole NOR logic (LOW = OFF), delivering >200 mA source/sink into capacitive loads while maintaining fast rise/fall times (100/50 ns typical at 1 nF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.1 V ±1% - enables precision feedback without external trimming resistors |
| Oscillator Range | 100 Hz to 400 kHz - supports wide SMPS operating frequencies with RT/CT programmability |
| Output Drive | 200 mA sink/source - directly drives MOSFET gates or small-signal transformers without buffer stages |
| Shutdown Delay | 0.2–0.5 µs - ensures rapid fault response for overcurrent protection |
| UVLO Threshold | 6–8 V with 500 mV hysteresis - prevents erratic startup during brownout conditions |
| Max Duty Cycle | 45–49% - limits conduction time to prevent transformer saturation in push-pull designs |
| Soft-Start Current | 25–80 µA - sets ramp rate of external timing capacitor for controlled power-up |
Pinout & Package
SG2525AP013TR is housed in a 16-pin narrow-body SOIC (SO16) package with 1.27 mm pitch, compliant with JEDEC MS-012. Thermal resistance junction-to-ambient is 80 °C/W (max) under standard PCB mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Error Amplifier Inverting Input | Connects to feedback network; sets regulation point via voltage divider from output |
| 2 (VREF) | 5.1 V Reference Output | Provides stable bias for sensing circuits; max 20 mA load |
| 3 (CT) | Oscillator Timing Capacitor | Charges/discharges to set oscillator frequency and deadtime |
| 4 (RT) | Oscillator Timing Resistor | Sets oscillator frequency with CT; range 2–150 kΩ |
| 5 (DISCH) | Oscillator Discharge Terminal | Controls deadtime via external resistor to CT |
| 6 (SYNC) | Oscillator Synchronization Input | Allows master-slave operation or external clock locking |
| 7 (VCC) | Logic Supply Input | Operates from 8–35 V; powers internal circuitry and outputs |
| 8 (SS) | Soft-Start Capacitor | External capacitor ramps up PWM duty cycle at power-on |
| 9 (COMP) | Error Amplifier Output | Drives compensation network; high-impedance node for loop stability |
| 10 (SHDN) | Shutdown Control | Active-high input; triggers latch and discharges SS capacitor |
| 11 (OUT A) | Driver Output A | NOR logic: LOW = active; drives high-side or low-side switch |
| 12 (GND) | Power Ground | Common return for VCC, VC, and output stages |
| 13 (VC) | Collector Supply | Separate supply for output stage; 4.5–35 V, decoupled externally |
| 14 (OUT B) | Driver Output B | Complementary to OUT A; enables push-pull or bridge drive |
| 15 (VREF) | Reference Return | Ground reference for internal bandgap; connects to GND |
| 16 (VCC) | Logic Supply Input (duplicate) | Second VCC pin for improved noise immunity and current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Internal 5.1 V ±1% reference | Eliminates need for external voltage reference IC or trimming network in feedback path |
| Adjustable deadtime control | Single resistor between CT and DISCH pins sets non-overlap time to prevent shoot-through |
| Pulse-by-pulse shutdown | Each fault event resets PWM latch for one full cycle-enables cycle-by-cycle current limiting |
| Undervoltage lockout with hysteresis | 500 mV hysteresis ensures clean startup/shutdown without oscillation near threshold |
| Dual totem-pole outputs | Independent sourcing/sinking >200 mA per channel supports direct gate driving of discrete MOSFETs |
Applications
| Industrial DC-DC Converters | Telecom Power Supplies |
|---|---|
Use Scenario: 48 V input to ±15 V dual-rail isolated converter in PLC backplane power modules. IC Role / Device Role / Timing Role: Primary-side PWM controller generating complementary gate signals with programmable deadtime. Use Value: Internal 5.1 V reference and wide-input UVLO ensure stable regulation across telecom voltage transients (36–75 V). | Use Scenario: Half-bridge DC-DC module powering base station RF amplifiers with tight ripple requirements. IC Role / Device Role / Timing Role: Synchronized PWM generator controlling primary switches with jitter-free timing via SYNC pin. Use Value: Oscillator sync capability enables phase-aligned operation across multiple power modules for EMI reduction. |
| Motor Drive Gate Drivers | Test Equipment Power Stages |
Use Scenario: Low-voltage (24 V) H-bridge driver for servo motor control in factory automation systems. IC Role / Device Role / Timing Role: Dual-output PWM generator with independent deadtime adjustment for high-side/low-side FETs. Use Value: Adjustable deadtime via DISCH–CT resistor prevents cross-conduction during fast switching transitions. | Use Scenario: Programmable bench power supply with variable output (0–30 V, 0–10 A) and constant-current mode. IC Role / Device Role / Timing Role: Core PWM controller implementing current-mode feedback with pulse-by-pulse limiting. Use Value: Latching shutdown and fast (<0.5 µs) response enable reliable overcurrent protection without external comparators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UC3525AN | Same functional block diagram but ±2% reference tolerance and no internal soft-start current source | Requires external soft-start circuitry; less stable reference demands tighter feedback design | Choose when legacy TI-based designs require drop-in replacement with minimal layout change |
| TL5001CP | Single-ended output, no sync pin, 1% reference, but lacks latch-based shutdown and deadtime control | Only suitable for flyback or forward converters-not push-pull or bridge topologies | Prefer only for cost-sensitive, low-complexity SMPS where dual outputs and synchronization are unnecessary |
Compared with UC3525AN and TL5001CP, SG2525AP013TR delivers superior system-level reliability through integrated soft-start current sourcing, tighter reference accuracy, and deterministic latch-based shutdown-critical for industrial and telecom power where startup stress and fault containment must be minimized.
Availability
SG2525AP013TR is available at Aetrix Electronics and suitable for industrial DC-DC converters, telecom power supplies, motor drive gate drivers, and test equipment power stages requiring stable component supply and long-term lifecycle support.
Supply support for SG2525AP013TR 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The SG2525A series belongs to ST's legacy power management IC portfolio, engineered specifically for high-reliability switch-mode power supply control in harsh environments where thermal stability, UVLO robustness, and latch-based fault handling are essential.
FAQ
What is the maximum allowable oscillator frequency for SG2525AP013TR?
The maximum guaranteed oscillator frequency is 400 kHz, achieved with RT = 2 kΩ and CT = 470 pF under recommended operating conditions. Frequency accuracy degrades above this point due to propagation delays and timing capacitor leakage effects. Operation beyond 400 kHz is not characterized and may compromise duty-cycle linearity and deadtime control.
Can SG2525AP013TR drive MOSFETs directly without external gate drivers?
Yes-each output can source or sink up to 200 mA continuously (500 mA peak), enabling direct drive of small-to-medium power MOSFETs with gate charges ≤50 nC. For higher-Qg devices or faster switching, external buffers are recommended to maintain rise/fall times below 100 ns.
How does the shutdown function interact with soft-start?
A short pulse on SHDN (Pin 10) immediately latches the PWM off while minimally discharging the soft-start capacitor-allowing quick recovery. A sustained high signal discharges the capacitor fully, forcing a full soft-start cycle upon release. This dual-mode behavior supports both pulse-by-pulse current limiting and full-cycle restart.
Is the SG2525AP013TR pin-compatible with the SG3525A series?
Yes-SG2525AP013TR shares identical pinout, electrical characteristics, and functional behavior with SG3525AP and SG3525AN variants. The "25" prefix denotes the same industrial temperature grade (–25°C to +85°C) and electrical spec bin as the "35" series, differing only in part numbering convention and packaging marking.
SG2525AP013TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Push-Pull
- Number of Outputs:
- 2
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 8V ~ 35V
- Frequency - Switching:
- 100Hz ~ 400kHz
- Duty Cycle (Max):
- 49%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Enable, Soft Start
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SG2525AP013TR FAQ
1.How can I place an order for SG2525AP013TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SG2525AP013TR 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 SG2525AP013TR reliable?
The price and inventory of SG2525AP013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SG2525AP013TR is usually 5 days.
3.What payment methods are accepted for SG2525AP013TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SG2525AP013TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SG2525AP013TR?
SG2525AP013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SG2525AP013TR 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 SG2525AP013TR?
For technical support, including SG2525AP013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SG2525AP013TR requirements.
6.How does Aetrix verify that SG2525AP013TR is sourced from the original manufacturer or authorized distributors?
All SG2525AP013TR 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 SG2525AP013TR meets industry standards.
7.What is the process for return or replacement of SG2525AP013TR?
All SG2525AP013TR units undergo pre-shipment inspection (PSI). If there is an issue with SG2525AP013TR, 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 SG2525AP013TR part is unused and in its original packaging.
Return procedure for SG2525AP013TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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