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STMicroelectronics E-SG2525AP013TR
- Part No.:
- E-SG2525AP013TR
- Manufacturer:
- STMicroelectronics
- Category:
- DC DC Switching Controllers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
E-SG2525AP013TR.pdf
- Description:
- IC REG CTRLR BCK/PSH-PULL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,875
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Product details
Overview
E-SG2525AP013TR from STMicroelectronics is a regulating pulse-width modulation (PWM) controller IC designed for switch-mode power supply (SMPS) control in single-ended and push-pull 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 and offline SMPS.
For engineers reviewing the E-SG2525AP013TR datasheet, E-SG2525AP013TR pinout, E-SG2525AP013TR application, or E-SG2525AP013TR equivalent, key selection criteria include undervoltage lockout hysteresis (≈500 mV), dual totem-pole output drivers (≥200 mA sink/source), NOR logic output polarity, latch-based PWM termination, and sync-capable oscillator architecture.
Technical Context
The E-SG2525AP013TR implements a voltage-mode 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 external synchronization and wide-frequency tuning via RT/CT/RD network.
Shutdown is implemented through a dedicated pin (Pin 10) that simultaneously sets the PWM latch for immediate output disable and sinks 150 µA to discharge the external soft-start capacitor-enabling both pulse-by-pulse current limiting and full soft-start recycle based on command duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8 V to 35 V - supports wide-input industrial and telecom SMPS without pre-regulation |
| Reference Voltage | 5.1 V ±1% - enables precise feedback loop setpoint without trimming resistors |
| Oscillator Frequency | 100 Hz to 400 kHz - covers low-noise audio-grade and high-efficiency high-frequency designs |
| Output Drive Capability | ≥200 mA sink/source per output - directly drives MOSFET gates or bipolar bases without buffer stages |
| Undervoltage Lockout | 7 V threshold with ≈500 mV hysteresis - prevents erratic startup during brownout conditions |
| Deadtime Control | Adjustable via single resistor between CT and DISCHARGE pins - ensures safe overlap-free switching in bridge topologies |
| Soft-Start Current | 25–80 µA - determines ramp time with external capacitor; enables controlled inrush management |
Pinout & Package
Package: 16-pin narrow-body SOIC (SO16), 3.9 mm width, 1.27 mm pitch, RoHS-compliant plastic body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INV) | Inverting input of error amplifier | Connects to feedback divider; sets regulation point relative to 5.1 V reference |
| 2 (NINV) | Non-inverting input of error amplifier | Tied to internal 5.1 V reference; establishes error amp common-mode baseline |
| 3 (SYNC) | Oscillator synchronization input | Accepts external clock or master unit signal to align switching edges across multiple controllers |
| 4 (OSC) | Oscillator timing output | Provides buffered clock signal for external monitoring or auxiliary timing functions |
| 5 (CT) | Oscillator timing capacitor connection | Charges via internal current source; sets oscillator frequency with RT and RD |
| 6 (RT) | Oscillator timing resistor connection | Sets charging current for CT; primary frequency adjustment node |
| 7 (DISCH) | Oscillator discharge resistor connection | Controls discharge path for CT; adjusts deadtime independently of frequency |
| 8 (SS) | Soft-start capacitor connection | External capacitor ramps up internal bias; controls PWM duty-cycle ramp at startup |
| 9 (COMP) | Error amplifier output / compensation node | Connects to RC network for loop stability; sources/sinks up to 100 µA |
| 10 (SHDN) | Shutdown control input | Active-high: latches outputs off and discharges SS capacitor at 150 µA |
| 11 (OUT A) | Driver output A | NOR logic: LOW = active drive; capable of 200 mA sink/source |
| 12 (GND) | Power and signal ground | Common return for all analog and power sections; requires low-impedance PCB plane |
| 13 (VC) | Collector supply for output drivers | Separate 4.5–35 V rail powers totem-pole outputs; isolates driver noise from logic supply |
| 14 (VCC) | Logic supply input | 8–35 V input powering internal logic, reference, and oscillator circuits |
| 15 (REF) | 5.1 V reference output | Stable ±1% output; supplies feedback divider and external circuitry up to 20 mA |
| 16 (OUT B) | Driver output B | Complementary to OUT A; enables push-pull or dual-switch configurations |
Key Features
| Feature | Design Value |
|---|---|
| Internal 5.1 V reference trimmed to ±1% | Eliminates need for external voltage reference IC or precision resistor dividers in feedback path |
| Separate VC and VCC supply pins | Enables independent optimization of driver rail (e.g., 12 V) and logic rail (e.g., 15 V), reducing cross-talk |
| Pulse-by-pulse shutdown with latch | Prevents multiple pulses per cycle during overcurrent events-critical for transformer saturation protection |
| Adjustable deadtime via single external resistor | Allows precise control of non-overlap time between OUT A and OUT B-essential for half-bridge zero-voltage switching |
| Sync input compatible with TTL/CMOS levels | Permits interleaving of multiple SG2525A units to reduce input/output ripple without external phase-shift circuitry |
Applications
| Industrial DC-DC Converters | Offline AC-DC Power Supplies |
|---|---|
Use Scenario: 48 V input to 12 V/5 V isolated DC-DC modules in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Primary-side PWM controller generating complementary gate drive signals with programmable deadtime. Use Value: Internal 5.1 V reference and wide 8–35 V VCC range simplify auxiliary supply design; dual outputs support synchronous rectification control. | Use Scenario: 85–265 VAC front-end flyback or forward converters in medical equipment power supplies. IC Role / Device Role / Timing Role: Regulating PWM modulator with UVLO hysteresis and soft-start to meet IEC 60601-1 inrush and fault response requirements. Use Value: 500 mV UVLO hysteresis prevents oscillation during line sags; pulse-by-pulse shutdown enables Class II fault clearing without latch-up. |
| Telecom Rectifiers | LED Driver Controllers |
Use Scenario: -48 V telecom rectifier modules requiring high efficiency and thermal robustness across –25°C to +70°C ambient. IC Role / Device Role / Timing Role: Fixed-frequency PWM controller driving N-channel MOSFETs in forward topology with synchronous rectification. Use Value: Dual 200 mA drivers eliminate external gate drivers; VC pin allows separate 12 V gate drive rail for optimal Rds(on) utilization. | Use Scenario: Constant-current LED drivers for street lighting using buck-boost topology with analog dimming interface. IC Role / Device Role / Timing Role: Adjustable-frequency PWM modulator accepting 0–10 V dimming input via error amplifier inputs. Use Value: Error amplifier input range includes 5.1 V reference-enabling direct 0–10 V scaling without op-amp level shift; 400 kHz max frequency reduces magnetics size. |
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 pinout and functional block diagram; ±2% reference tolerance vs. ±1% in SG2525A | Lacks internal soft-start current source-requires external transistor for soft-start control | Preferred where cost sensitivity outweighs reference accuracy and integrated soft-start simplicity |
| TL598CP | Dual error amplifiers; no sync input; fixed 5.0 V reference; lower oscillator max frequency (200 kHz) | Designed for single-ended topologies only; no complementary output latch or deadtime control | Selected when designing simpler flyback or push-pull converters without interleaving or bridge operation needs |
Compared with UC3525AN and TL598CP, E-SG2525AP013TR offers tighter reference accuracy, built-in soft-start current source, oscillator sync capability, and superior deadtime adjustability-making it optimal for high-reliability, multi-phase, or bridge-based SMPS where timing precision and fault containment are critical.
Availability
E-SG2525AP013TR is available at Aetrix Electronics and suitable for industrial DC-DC converters, offline AC-DC power supplies, telecom rectifiers, and LED driver controllers requiring stable component supply and long-term production continuity.
Supply support for E-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, Switzerland, specializing in power management, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.
The SG2525A product line was developed specifically for high-performance, discrete-component-reducing PWM control in isolated and non-isolated switch-mode power supplies-emphasizing reliability, thermal robustness, and design flexibility across wide input ranges.
FAQ
What is the maximum recommended operating temperature for E-SG2525AP013TR?
The E-SG2525AP013TR is rated for an operating ambient temperature range of –25°C to +85°C. Junction temperature must not exceed 150°C, and thermal resistance from junction to ambient (Rth j-amb) is 50°C/W in SO16 package. Derating is required above 70°C ambient for continuous 1000 mW dissipation.
Does E-SG2525AP013TR support synchronous rectification control?
Yes-its dual complementary totem-pole outputs (OUT A and OUT B) with NOR logic polarity and adjustable deadtime enable direct control of high-side and low-side MOSFETs in synchronous buck, forward, or half-bridge topologies. The separate VC pin allows optimized gate drive voltage independent of logic supply.
How is oscillator frequency calculated for E-SG2525AP013TR?
Oscillator frequency is determined by f = 1 / [CT × (0.7 × RT + 3 × RD)], where CT is the timing capacitor (0.001–0.1 µF), RT sets charging current (2–150 kΩ), and RD (0–500 Ω) controls discharge time and deadtime. Typical values: RT = 3.6 kΩ, CT = 10 nF yield ≈40 kHz.
Can E-SG2525AP013TR be used in current-mode control architectures?
No-it is strictly a voltage-mode PWM controller. It lacks a current-sense comparator, slope compensation input, or peak-current detection circuitry. For current-mode control, ST's L6599 series or TI's UCC3803 would be appropriate alternatives.
E-SG2525AP013TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
E-SG2525AP013TR FAQ
1.How can I place an order for E-SG2525AP013TR through Aetrix?
Please submit a Request for Quotation (RFQ) for E-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 E-SG2525AP013TR reliable?
The price and inventory of E-SG2525AP013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-SG2525AP013TR is usually 5 days.
3.What payment methods are accepted for E-SG2525AP013TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-SG2525AP013TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for E-SG2525AP013TR?
E-SG2525AP013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your E-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 E-SG2525AP013TR?
For technical support, including E-SG2525AP013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-SG2525AP013TR requirements.
6.How does Aetrix verify that E-SG2525AP013TR is sourced from the original manufacturer or authorized distributors?
All E-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 E-SG2525AP013TR meets industry standards.
7.What is the process for return or replacement of E-SG2525AP013TR?
All E-SG2525AP013TR units undergo pre-shipment inspection (PSI). If there is an issue with E-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 E-SG2525AP013TR part is unused and in its original packaging.
Return procedure for E-SG2525AP013TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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