AiP3843
AiP3843 is the I-CORE functional equivalent of UC3843: high performance Current-Mode PWM controllers, SOP-8, −40 to 125 °C. Factory-original stock in Shenzhen; free samples with shipping paid.
Key specifications
| Manufacturer | I-CORE (Wuxi I-CORE Electronics Co., Ltd.) |
|---|---|
| Part number | AiP3843 |
| Function | High Performance Current-Mode PWM Controllers |
| Package | SOP-8 |
| Order codes in stock | AIP3843SA8.TR |
| Supply voltage | See datasheet |
| Operating temperature | −40 to 125 °C |
| Replaces | UC3843 |
| Compliance | RoHS (EU 2011/65/EU + 2015/863) and REACH SVHC — third-party lab tested; reports on request |
| Datasheet | PDF, English |
Questions buyers ask
- Can AiP3843 replace UC3843?
- AiP3843 is I-CORE's functional equivalent of UC3843 in the same SOP-8 package. Standard parts in this family share the industry pinout, but please compare both datasheets — supply range, timing and absolute maximum ratings — before design-in.
- What is the supply voltage and temperature range of AiP3843?
- Supply: See datasheet. Operating temperature: −40 to 125 °C. See the datasheet for full electrical characteristics.
- Is AiP3843 in stock, and can I get a free sample?
- Yes, it is held in stock in Shenzhen. Free samples are available for evaluation, with shipping paid by us. For production orders, SMD parts can be ordered from 1 pc and DIP parts ship in full tubes; orders ship within 2–3 business days after payment.
- Is it original I-CORE product?
- Yes. We supply factory-original I-CORE (Wuxi I-CORE Electronics) parts in sealed reels and tubes. Our ISO 9001, ISO 14001 and ISO 45001 certificates are shown on the home page; RoHS and REACH test reports are available on request.
Datasheet highlights
From the I-CORE English datasheet AiP3843 (revision 2024-07-A3). The full datasheet PDF is linked above.
General description
AiP3842/AiP3843/AiP3844/AiP3845 are fixed frequency current-mode PWM controller. They are specially designed for Off-Line and DC-to-DC converter applications with minimum external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier. Current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET. Protection circuit Includes built in under-voltage lockout and current limiting. The AiP2842 and AiP2844 have UVLO thresholds of 16V (on) and 10V (off). The AiP2843 and AiP2845 are 8.8V (on) and 7.6V (off) .The AiP3842 and AiP3843 can operate within 100% duty cycle. The AiP3844 and AiP3845 can operate with 50% duty cycle.
Key features
- Low start-up current (<0.5mA)
- Maximum duty cycle clamp
- UVLO with hysteresis
- Operating frequency up to 500kHz
- Operating temperatures: -40℃ to 125℃
Request a quote
We reply within 1 business day. Free samples — shipping on us. Tell us the part number, quantity and your application.
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