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ST1S06XX33 Fiches technique(PDF) 1 Page - STMicroelectronics |
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ST1S06XX33 Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 20 page April 2008 Rev 7 1/20 ST1S06xx Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed or adjustable, step-down switching regulator Features ■ Step-down current mode PWM (1.5 MHz) DC- DC converter ■ 2% DC output voltage tolerance ■ Synchronous rectification ■ Inhibit function ■ Internal soft start ■ Typical efficiency: > 90 % ■ 1.5 A Output current capability ■ Not switching quiescent current: max 1.5 mA over temperature range ■ RDS(ON) typ.150 mΩ ■ Uses tiny capacitors and inductors ■ Operative junction temp. - 30 °C to 125 °C ■ Available in DFN6D 3x3 exposed pad Description The ST1S06 is a step down DC-DC converter optimized for powering low-voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause an high heating of the application environment. It provides up to 1.5 A over an input voltage range of 2.7 V to 6 V. An high switching frequency (1.5 MHz) allows the use of tiny surface-mount components: as well as the resistor divider to set the output voltage value, only an inductor and two capacitors are required. Besides, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damages due to accidental short circuit. The ST1S06 is available in DFN6D 3x3 package. DFN6D (3x3 mm) Table 1. Device summary Part numbers Order codes Package ST1S06 ST1S06PUR DFN6D (3x3 mm) ST1S06A ST1S06APUR DFN6D (3x3 mm) ST1S06XX12 ST1S06PU12R DFN6D (3x3 mm) ST1S06XX33 ST1S06PU33R DFN6D (3x3 mm) www.st.com |
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