UCC3808APWTR-2 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC3808APWTR-2 is a current-mode PWM switching controller by Texas Instruments with 4.3 V to 14 V input range. Key specs: 500 kHz maximum switching frequency, 8-pin SOIC package, and internal soft-start circuitry. Available from stock with worldwide shipping at competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UCC3808APWTR-2 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.2300(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control up to 500 kHz enables high-density offline and DC/DC converter designs
- Internal soft-start and cycle-by-cycle current limiting protect power stages during startup and fault conditions
- Low startup current of under 200 µA allows high-resistance startup networks for low-power standby efficiency
Applications
The UCC3808APWTR-2 is used in flyback, forward, and boost converters for industrial power supplies, telecom DC/DC modules, and AC/DC adapters requiring precise current-mode control. Its 4.3 V to 14 V input range and low quiescent current make it well-suited for low-power offline applications with a bias winding supply. It also fits battery charger and UPS auxiliary power supply designs where cycle-by-cycle current limiting is critical for reliability.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 14V |
| Input Voltage-Min | 4.3V |
| Input Voltage-Nom | 10V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 2mA |
| Supply Voltage-Max (Vsup) | 14V |
| Supply Voltage-Min (Vsup) | 5V |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What switching frequency range does UCC3808APWTR-2 support and how is it set?
The UCC3808APWTR-2 supports switching frequencies from 50 kHz up to 500 kHz, set by a single external RC network connected to the timing pin. At 200 kHz, a typical 10 nF capacitor and 56 kΩ resistor set the oscillator period, allowing the designer to optimize between transformer size and switching loss for 10 V bias-rail flyback converters.
How does UCC3808APWTR-2 protect the power stage during short-circuit or overload conditions?
The UCC3808APWTR-2 implements cycle-by-cycle current limiting by comparing the current sense voltage on the CS pin to an internal 1 V threshold, terminating the gate pulse within 100 ns of an overcurrent event. This per-cycle protection prevents transformer saturation and limits peak currents to the programmed 5 A to 10 A level without requiring additional external protection circuits.
When is UCC3808APWTR-2 a suitable alternative to the UCC3808APWTR-1 variant for a given design?
The -2 variant of the UCC3808APWTR configures the soft-start pin differently from the -1 variant, requiring an external capacitor of 10 nF to 100 nF to set a 2 ms to 20 ms startup ramp. Choose the -2 variant when the power supply output needs controlled inrush current during startup, such as in a 48 V telecom rail converter where charging a 470 µF bulk capacitor without current limiting could trip an upstream breaker.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.1000 | $3.10 |
| 2000+ | $2.2300 | $4460.00 |
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