ST1S12GR DC-DC Switching Converters by STMicroelectronics

Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L

Status: Active
Series: ST1S12XX
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The ST1S12 is a step down DC-DC converter optimized for powering low-voltage digital cores in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause high heating of the application environment. It provides up to 0.7 A over an input voltage range of 2.5 V to 5.5 V. A high switching frequency (1.7 MHz) allows the use of tiny surface-mount components. In addition to the resistor divider to set the output voltage value, only an inductor and two capacitors are required. Moreover, 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 current is limited to prevent damage due to accidental short-circuit. The ST1S12 is available in the TSOT23-5L package.

Where to Buy

Prices starting from US$0.45

Distributor Stock
Logo for Farnell
Farnell
from US$0.50
496
in stock
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Logo for Newark Electronics
Newark Electronics
from US$0.51
3,000
in stock
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Logo for Future Electronics
Future Electronics
from US$0.45
3,000
in stock
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Logo for Avnet America
Avnet America
from US$0.49
3,000
in stock
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Logo for element14
element14
from US$0.53
496
in stock
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Logo for EBV Elektronik
EBV Elektronik
-
-
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Logo for Avnet Silica
Avnet Silica
-
-
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Features

Step-down current mode PWM (1.7 MHz) DC-DC converter
3% DC output voltage tolerance
Synchronous rectification
Fixed output voltage 1.2 V, 1.8 V, and ADJ (available on request 1.5 V, 2.5 V and 3.3 V)
Enable function
Internal soft start
Typical efficiency: > 90%
0.7 A output current capability
Not switching quiescent current: max 650 μA over temperature range
RDSONtyp. 250 mΩ and 400 mΩ
Uses tiny capacitors and inductors
Operative junction temp. -40 °C to 125 °C
Available in TSOT23-5L package

Alternative Descriptions

Buck Regulators Rohs Compliant: Yes |Stmicroelectronics ST1S12GR | Newark Electronics
ST Series 5.5V 2.08 MHz Buck Surface Mount Switching Regulator - TSOT-23-5 | Future Electronics
Conv DC-DC Single Step Down 2.5V to 5.5V 5-Pin TSOT-23 T/R | Avnet America
DC/DC CONV, BUCK, 1.7MHZ, 150DEG C | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ST1S12GR?

Additional datasheets, footprints and schematics for ST1S12GR are listed on our Part Details page. You can also find images and similar parts to ST1S12GR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ST1S12GR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ST1S12GR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ST1S12GR fall under?

The ST1S12GR is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to ST1S12GR when available in the Buck Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the ST1S12GR you can contact the distributor directly for product support, shipping queries etc.

Is the ST1S12GR RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for ST1S12GR have stock available?

Authorised distributors including Newark Electronics, Future Electronics, Avnet America, element14 and Farnell have stock available or on a lead time for ST1S12GR.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for ST1S12GR often in real-time on the comparison pages.

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