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Overview
| Topology | Other Topology |
| IC revision | 1.0 |
Description
SC4503EVBThe SC4503 is a 1.3MHz current-mode step-up switchingregulator with an integrated 1.4A power transistor.Its high switching frequency allows the use of tiny surface-mount external passive components. The SC4503features a combined shutdown and soft-start pin. Theoptional soft-start function eliminates high input currentand output overshoot during start-up. The internal compensationnetwork accommodates a wide range of voltageconversion ratios. The internal switch is rated at 34Vmaking the device suitable for high voltage applicationssuch as Boost and SEPIC.The SC4503 is available in low-profi le 5-lead TSOT-23 and8-lead 2X2mm MLPD-W packages. The SC4503’s lowshutdown current (< 1μA), high frequency operation andsmall size make it suitable for portable applications
Features
Remarks- BOM is added with Main pdf
Low Saturation Voltage Switch: 260mV at 1.4A???? 1.3MHz Constant Switching Frequency???? Peak Current-mode Control???? Internal Compensation???? Programmable Soft-Start???? Input Voltage Range From 2.5V to 20V???? Output Voltage up to 27V???? Uses Small Inductors and Ceramic Capacitors???? Low Shutdown Current (< 1μA)???? Low Profi le 5-Lead TSOT-23 and 8-Lead 2X2mmMLPD-W packages???? Fully WEEE and RohS compliant
Typical applications
- Medical Equipment
- Local DC-DC Converters
- White LED Drivers
- Portable Devices
- XDSL Power Supplies
- Digital Cameras
- TFT Bias Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | IRP,40K(A) | ISAT(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(Ω) | fres(MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD2 SMT Power Inductor, 4.7 µH, 1.82 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD2 SMT Power Inductor | Inductance4.7 µH | Rated Current1.82 A | Performance Rated Current2.6 A | Saturation Current2.46 A | Saturation Current @ 10%2.9 A | Saturation Current @ 30%3.3 A | DC Resistance0.11 Ω | Self Resonant Frequency50 MHz |