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Description
The APW7057 is a 300kHz constant frequency voltage mode synchronous switching controller that drives external N-channel MOSFETs. The upper MOSFET remains on when the input supply drops close to the output, achieving a 100% duty cycle. The internal loop compensation is optimized for fast transient response, eliminating the need for an external compensation network. This model features a precision 0.8V reference, making it suitable for a wide variety of low voltage applications. The soft-start time is internally set to 2ms, limiting the input in-rush current and preventing output overshoot during powering up.
Specifications and Features
- Operates from +5V Input
- 0.8V Internal Reference Voltage
- ±1.5% Accuracy Over Line, Load and Temperature
- 0.8V to VCC Output Range
- Full Duty Cycle Range: 0% to 100%
- Internal Loop Compensation
- Internal Soft-Start: Typical 2ms
- Programmable Over-Current Protection: Lossless Sensing Using MOSFET RDS (ON)
- Under-Voltage Protection
- Drives External N-Channel MOSFETs
- Shutdown Control
- Small SOP-8 Package
- Lead Free and Green Devices Available (RoHS Compliant)
Application Scenarios
- Motherboard
- Graphics Cards
- Cable or DSL Modems, Set Top Boxes
- DSP Supplies
- Memory Supplies
- 5V Input DC-DC Regulators
- Distributed Power Supplies
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
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Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
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Additional Information
- Datasheet: Download APW7057
- Chipdatas Part: CD87-APW7057
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/12 08:03 +0800
Refund
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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Payment Method
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The fee is charged according to the rule of PayPal.
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The fee is charged according to the rule of PayPal.
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Western Union charge US$0.00 banking fee.
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We recommend to use bank transfer for large orders to save on handling fees.
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