ST1S09IPUR
Active2 A, 1.5 MHZ PWM STEP-DOWN SWITCHING REGULATOR WITH SYNCHRONOUS RECTIFICATION
Deep-Dive with AI
Search across all available documentation for this part.
ST1S09IPUR
Active2 A, 1.5 MHZ PWM STEP-DOWN SWITCHING REGULATOR WITH SYNCHRONOUS RECTIFICATION
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | ST1S09IPUR |
|---|---|
| Current - Output | 2 A |
| Frequency - Switching | 1.5 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -30 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 6-VDFN Exposed Pad |
| Supplier Device Package | 6-DFN (3x3) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 6 V |
| Voltage - Input (Min) [Min] | 2.7 V |
| Voltage - Output (Max) [Max] | 5.22 V |
| Voltage - Output (Min/Fixed) | 0.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.92 | |
| 10 | $ 1.72 | |||
| 25 | $ 1.62 | |||
| 100 | $ 1.38 | |||
| 250 | $ 1.30 | |||
| 500 | $ 1.14 | |||
| 1000 | $ 0.94 | |||
| Digi-Reel® | 1 | $ 1.92 | ||
| 10 | $ 1.72 | |||
| 25 | $ 1.62 | |||
| 100 | $ 1.38 | |||
| 250 | $ 1.30 | |||
| 500 | $ 1.14 | |||
| 1000 | $ 0.94 | |||
| Tape & Reel (TR) | 3000 | $ 0.88 | ||
| 6000 | $ 0.84 | |||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 2.13 | |
| 10 | $ 1.57 | |||
| 25 | $ 1.53 | |||
| 50 | $ 1.48 | |||
| 100 | $ 1.44 | |||
| 250 | $ 1.38 | |||
| 500 | $ 1.35 | |||
| 1000 | $ 1.32 | |||
Description
General part information
ST1S09 Series
The ST1S09 is a step-down DC-DC converter optimized for powering low output voltage applications. It supplies a current in excess of 2 A over an input voltage range from 2.7 V to 6 V.
A high PWM switching frequency (1.5 MHz) allows the use of tiny surface-mount components.
Moreover, since the required synchronous rectifier is integrated, the number of the external components is reduced to minimum: a resistor divider, an inductor and two capacitors. The Power Good function continuously monitors the output voltage. An open drain Power Good flag is released when the output voltage is within regulation. In addition, 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 thermally protected and the output current limited to prevent damages due to accidental short circuit. The ST1S09 is available in the DFN6 (3 x 3 mm) package.