STw4141
General Description
The STw4141is a patented, single-coil, two-output synchronous step-down DC-DC converter. The device is dedicated to low-power applications and is specifically designed for use in the latest generation digital baseband and multimedia processors.
With its single-coil architecture, this innovative step-down converter enables you to considerably reduce your bill of material by 40%, as well as your PCB size by 30% compared to a standard supply solution.
High efficiency - up to 92% - is also one of the STw4141’s main strengths. This advanced product brings the highest levels of performance to your application without compromising any parameters.
Key Features
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Single-coil, two-output switching converter for digital core supply and digital I/O supply
- Digital I/O supply: VOUT1 @ 200 mA
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CPU core supply: VOUT2 @ 400 mA
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Wide range of fixed output voltage configurations
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Up to 92% efficiency
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PWM operation at 900 kHz fixed frequency
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Automatic or controlled PWM/PFM switch
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External clock synchronization from 600 kHz to 1.5 MHz
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Sleep mode at reduced voltage available
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TFBGA 16 (3 x 3 x 1.2 mm, 0.5 mm pitch)
Connection Diagram
Applications
- Mobile phones
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PDAs and handheld terminals
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Portable media players
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Digital still cameras
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WLAN and Bluetooth applications
Supporting Documents
| Type: | Description: | File Size: | Download: |
| Application Note | Dual output DC/DC converter with resistor dividers in feedback loops | 253KB | download |
| Data Brief | Single-coil dual-output DC/DC converter for digital processor supply | 154KB | download |
| Datasheet | Single-coil dual-output DC/DC converter for digital processor supply | 951KB | download |
| Flyer | Single-coil, two-output DC/DC converter for digital processors | 249KB | download |
| User Manual | STw4141 demonstration board user guide | 480KB | download |
