The SC4503 is a 1.3MHz current-mode step-up switching regulator with an integrated 1.4A power transistor. Its high switching frequency allows the use of tiny surface-mount external passive components. The SC4503 features a combined shutdown and soft-start pin. The optional soft-start function eliminates high input current and output overshoot during start-up.
a combined shutdown and soft-start pin. The optional soft-start function eliminates high input current and output overshoot during start-up. The internal compensation network accommodates a wide range of voltage conversion ratios. The internal switch is rated at 34V www.DataSheet4U.com making the device suitable for high voltage applications such as Boost and SEPIC. The SC4503 is available in low-profile 5-lead TSOT-23 and 8-lead 2X2mm MLPD-W packages. The SC4503’s low shutdown current (< 1μA), high frequency operation and small size make it suitable for portable applications. SC4503 Features.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | SC450 |
Semtech Corporation |
Dual Phase Power Supply Controller | |
2 | SC4501 |
Semtech Corporation |
2MHz Step-Up Switching Regulator | |
3 | SC4502 |
Semtech Corporation |
2MHz Step-Up Switching Regulator | |
4 | SC4502H |
Semtech Corporation |
2MHz Step-Up Switching Regulator | |
5 | SC4505 |
Semtech Corporation |
High Efficiency Boost Converter | |
6 | SC4508 |
Semtech Corporation |
Buck or Buck-Boost Current Mode Controller | |
7 | SC4508A |
Semtech Corporation |
Buck or Buck-Boost Current Mode Controller | |
8 | SC4509 |
Semtech Corporation |
Highly Integrated Step-Up Converter | |
9 | SC450ITSTRT |
Semtech Corporation |
Dual Phase Power Supply Controller | |
10 | SC451 |
Semtech |
Single Phase Power Supply Controller | |
11 | SC4510 |
Semtech Corporation |
High Performance Synchronous Buck Controller | |
12 | SC4517A |
Semtech Corporation |
1.5A Step-Down Switching Regulator |