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SC4503

Semtech Corporation
Part Number SC4503
Manufacturer Semtech Corporation
Description 1.3MHz Step-Up Switching Regulator
Published Nov 17, 2008
Detailed Description 1.3MHz Step-Up Switching Regulator with 1.4A Switch POWER MANAGEMENT Description The SC4503 is a 1.3MHz current-mode ste...
Datasheet PDF File SC4503 PDF File

SC4503
SC4503

Overview
1.
3MHz Step-Up Switching Regulator with 1.
4A Switch POWER MANAGEMENT Description 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.
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 ‹ Low Saturation Voltage Switch: 260mV at 1.
4A ‹ 1.
3MHz Constant Switching Frequency ‹ Peak Curre...


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