XI'AN Aerosemi Tech
MT3540-F231.2MHz Boost Adjustable 1.23V~28V 1.5A SOT-23-5 Voltage Regulators - DC DC Switching Regulators RoHS
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₹6.88
4,17,672 in stock
TDSEMICDatasheet (PDF)
UC3845-TD
Switching Regulator IC 1A SOP-8
SOP-8ROHS CompliantActive
Current-mode PWM controller
- Manufacturer
- TDSEMIC
- Manufacturer part #
- UC3845-TD
- Store part #
- C42422134
- Package / case
- SOP-8
- Packaging
- Tape & Reel (TR)
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement · policy
4,875 in stock
#C42422134
Stock & price checked 6 days ago
| Quantity | Unit price | Pack price |
|---|---|---|
| 5+ | ₹11.39 | ₹56.95 |
| 50+ | ₹10.03 | ₹501.50 |
| 150+ | ₹9.34 | ₹1,401.00 |
| 500+ | ₹8.82 | ₹4,410.00 |
| 2,500+ | ₹8.41 | ₹21,025.00 |
| 5,000+ | ₹8.22 | ₹41,100.00 |
5 × ₹11.39
₹56.95
excl. GST
₹67.20 incl. 18% GST
- Dispatch in 7–10 working days
- GST invoice with every order
- Standard pack: 2,500 per reel
UC3845-TD
₹56.95 for 5 + GST
Specifications
- Operating Temperature
- 0℃~+70℃@(TA)
- Number of Outputs
- 1
- Frequency - Switching
- 52kHz;100kHz~500kHz
- Features
- Cycle-by-cycle current limiting;Overcurrent Protection
- Output Type
- Adjustable
- Topology
- Flyback;Forward
- Operating Voltage
- 30V
- Switch tube (built-in/external)
- External
- Output Current
- 1A
- Quiescent Current
- 12mA
Packaging & compliance
- RoHS
- ROHS Compliant
- Lifecycle
- Active
- Packaging
- Tape & Reel (TR)
- Standard pack
- 2,500 / Reel
- Sold per
- Piece
- Minimum order
- 5 (multiples of 5)
- Unit weight
- 0.114 g
Overview
UC3845 is a high-performance fixed-frequency current-mode controller designed for isolated or DC-DC converter applications, offering designers a cost-effective solution with minimal external components. The circuit features an undervoltage lockout module with startup current less than 0.5mA, a precision reference voltage connected to the error amplifier input — trimmed for high accuracy. Additional internal blocks include logic circuitry for latched operation, current limiting, and a PWM comparator designed for high-current totem-pole output. This output structure is suitable for driving N-channel MOSFETs, with the output held low during shutdown.
Applications
- Power converters
Key features
- Optimized for isolated or DC/DC converters
- Low startup current (<0.5mA)
- Automatic feedforward compensation
- Cycle-by-cycle current limiting
- Enhanced load transient response
- Undervoltage protection with hysteresis
- Double pulse suppression
- High-current totem-pole output
- Internal trimmed bandgap reference
- Operating frequency up to 500kHz
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