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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.
Key Features
- Uses tiny capacitors and inductors
- RDS(ON) typ150mΩ
- Available in DFN6 3x3 exposed pad
- Operative junction temp. -30°C to 125°C
- 1.5A Output current capability
- Typical efficiency:> 90%
- Step-down current mode PWM (1.5MHz) DC-DC converter
- Synchronous rectification
- 2% DC output voltage tolerance
- Internal soft start
- Not switching quiescent current: max 1.5mA over temperature range
- Inhibit function
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Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | ECCN (US) | Country of Origin | Approximate Price (US$)* / Qty | Order from ST | Order from Distributors |
|---|---|---|---|---|---|---|---|---|
| ST1S06PUR | DFN6 3x3 | Tape And Reel | Active | EAR99 | PHILIPPINES | 1.12 / 1k | Buy now | Check Availability |
| ST1S06PU12R | DFN6 3x3 | Tape And Reel | Active | EAR99 | MALAYSIA | 1.12 / 1k | Buy now | Check Availability |
| ST1S06PU33R | DFN6 3x3 | Tape And Reel | Active | EAR99 | MALAYSIA | 1.12 / 1k | Buy now | Check Availability |
| ST1S06APUR | DFN6 3x3 | Tape And Reel | Active | EAR99 | MALAYSIA | 1.12 / 1k | Buy now | Check Availability |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
Featured Videos
Evaluation Tools
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Picture Part number Manufacturer Description 
STEVAL-ISA043V2 -- 1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06 Part Number1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06
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| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| ST1S06APUR | Active | DFN6 3x3 | Industrial | Ecopack2 | |
| ST1S06PU12R | Active | DFN6 3x3 | Industrial | Ecopack2 | |
| ST1S06PU33R | Active | DFN6 3x3 | Industrial | Ecopack2 | |
| ST1S06PUR | Active | DFN6 3x3 | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
