Hangzhou Silan Microelectronics
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LeadtrendDatasheet (PDF)
LD5521DGL
130kHz 200mW 8V~26.5V Flyback SOT-26 AC DC Converters, Offline Switchers RoHS
SOT-26ROHS CompliantActive
Quasi-Resonant PWM Flyback Controller with Frequency Swapping and Integrated Protections
- Manufacturer
- Leadtrend
- Manufacturer part #
- LD5521DGL
- Store part #
- C5124412
- Package / case
- SOT-26
- Packaging
- Tape & Reel (TR)
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement · policy
2,945 in stock
#C5124412
Stock & price checked 5 days ago
| Quantity | Unit price | Pack price |
|---|---|---|
| 5+ | ₹34.64 | ₹173.20 |
| 50+ | ₹27.08 | ₹1,354.00 |
| 150+ | ₹23.84 | ₹3,576.00 |
| 500+ | ₹19.81 | ₹9,905.00 |
| 3,000+ | ₹18.01 | ₹54,030.00 |
| 6,000+ | ₹16.92 | ₹1,01,520.00 |
5 × ₹34.64
₹173.20
excl. GST
₹204.38 incl. 18% GST
- Dispatch in 7–10 working days
- GST invoice with every order
- Standard pack: 3,000 per reel
LD5521DGL
₹173.20 for 5 + GST
Specifications
- Operating Temperature
- -40℃~+125℃
- Frequency - Switching
- 130kHz
- Pd - Power Dissipation
- 200mW
- Voltage - Supply
- 8V~26.5V
- Features
- Over Voltage Protection;Under Voltage Protection;Overtemperature protection (OTP);Short Circuit Protection;Overload Protection
- Topology
- Flyback
- Working Mode
- QR
- Feedback System
- Secondary-Side Feedback
Packaging & compliance
- RoHS
- ROHS Compliant
- Lifecycle
- Active
- Packaging
- Tape & Reel (TR)
- Standard pack
- 3,000 / Reel
- Sold per
- Piece
- Minimum order
- 5 (multiples of 5)
- Unit weight
- 0.047 g
Overview
The LD5521D integrates a quasi-resonant PWM control function into a SOT-26 package. It takes less components counts or circuit space, especially ideal for those total solutions of low cost. The implemented functions include low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal soft driving. It also features more protections like OLP (Over Load Protection) and OVP (Over Voltage Protection) to prevent circuit damage occurred under abnormal conditions. Furthermore, the QR jitter function could reduce the noise level and thus helps the power circuit designers to easily deal with the EMI filter by spending minimum amount of component cost and developing time.
Applications
- Switching AC/DC Adaptor
Key features
- Secondary-side feedback control with quasi-resonant operation
- Low startup current (<5μA)
- 0.5mA ultra-low operating current at light load
- 130kHz maximum switching frequency
- Current mode control with cycle-by-cycle current limit
- Green mode control
- UVLO (Under Voltage Lockout)
- LEB (Leading-Edge Blanking) on CS pin
- VCC OVP (Over Voltage Protection)
- Adjustable OVP (Over Voltage Protection) on FB pin
- Output short protection by FB pin
- OLP (Over Load Protection)
- Internal OTP (Over Temperature Protection)
- 250mA/-500mA driving capability
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