UC3845BD1
- Mfr.Part #
- UC3845BD1
- Manufacturer
- onsemi
- Package / Case
- 8-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- IC REG CTRLR BOOST/FLYBACK 8SOIC
- Stock
- 1,416
- In Stock :
- 1,416
Request A Quote(RFQ)
- * Fullname:
- * Company:
- * E-Mail:
- Phone:
- Comment:
- * Quantity:
- Manufacturer :
- onsemi
- Product Category :
- DC DC Switching Controllers
- Length :
- 5mm
- Terminal Position :
- Dual
- ECCN Code :
- EAR99
- Number of Terminations :
- 8
- Voltage - Supply (Vcc/Vdd) :
- 7.6V~30V
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Control Mode :
- CURRENT-MODE
- Package / Case :
- 8-SOIC (0.154, 3.90mm Width)
- Input Voltage (Max) :
- 30V
- Number of Outputs :
- 1
- Packaging :
- Tube
- Time@Peak Reflow Temperature-Max (s) :
- 30
- Output Voltage :
- 5.1V
- Control Features :
- Frequency Control
- Terminal Form :
- Gull wing
- Synchronous Rectifier :
- No
- Mounting Type :
- Surface Mount
- Frequency :
- 500kHz
- Factory Lead Time :
- 10 Weeks
- Switcher Configuration :
- Single
- RoHS Status :
- ROHS3 Compliant
- Lifecycle Status :
- ACTIVE (Last Updated: 7 months ago)
- Input Voltage-Nom :
- 15V
- Rise Time :
- 50ns
- Analog IC - Other Type :
- SWITCHING CONTROLLER
- Peak Reflow Temperature (Cel) :
- 260
- Topology :
- Boost, Flyback
- Output Current :
- 1A
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Duty Cycle (Max) :
- 48%
- Output Configuration :
- Positive, Isolation Capable
- Number of Pins :
- 8
- Mount :
- Surface Mount
- Base Part Number :
- UC3845
- Operating Temperature :
- -40°C~150°C TJ
- Width :
- 4mm
- Output Type :
- Transistor Driver
- Function :
- Step-Up/Step-Down
- JESD-609 Code :
- e4
- Height :
- 1.25mm
- Max Duty Cycle :
- 50 %
- Control Technique :
- PULSE WIDTH MODULATION
- Fall Time (Typ) :
- 50 ns
- Datasheets
- UC3845BD1

DC DC Switching Controllers onsemi UC3845BD1 Overview
Exploring the pinnacle of power management solutions, the DC DC Switching Controllers onsemi UC3845BD1 emerges as an exceptional choice for designers focusing on efficiency and reliability. This device, created by the leading semiconductor manufacturer onsemi, is an integrated circuit specifically designed for the robust control of boost and flyback converters. The component's form factor, a compact 8SOIC package, ensures a minimal footprint on printed circuit boards (PCBs), making it an ideal candidate for size-sensitive applications. It excels in performance, offering a range of features that make it adaptable to a variety of demanding power environments.
UC3845BD1 Features
- High-performance current mode PWM controller
- Automatic feed forward compensation
- Pulse-by-pulse current limiting
- Enhanced load response characteristics
- Under-voltage lockout with hysteresis
- Low startup and operating current
UC3845BD1 Applications
- Power Supplies for Desktops and Servers
In desktop and server power supplies, the UC3845BD1 controls the power conversion process, ensuring stable and efficient voltage regulation to safeguard critical components.
- LED Lighting Systems
For LED lighting systems, this IC aids in managing the intricate requirements for constant current supply, which is crucial for maintaining uniform brightness and prolonging LED life.
- Battery Chargers
This device is instrumental in battery charger circuits, providing precise power management to optimize charge cycles and maintain battery health.
- DC-DC Converters
The IC serves as the central control unit in DC-DC converters, addressing the need for voltage conversion with high efficiency and accuracy in a variety of applications.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















