Calculation tool
TPS64201
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- Step-Down Controller for Applications With up to 95% Efficiency
- 1.8-V to 6.5-V Operating Input Voltage Range
- Adjustable Output Voltage Range From 1.2 V to VI
- High Efficiency Over a Wide Load Current Range
- 100% Maximum Duty Cycle for Lowest Dropout
- Internal Softstart
- 20-µA Quiescent Current (Typical)
- Overcurrent Protected
- Available in a SOT23 Package
- APPLICATIONS
- USB Powered Peripherals
- Organizers, PDAs, and Handheld PCs
- Low Power DSP Supply
- Digital Cameras
- Hard Disk Drives
- Portable Audio Players
The TPS6420x are nonsynchronous step-down controllers that are ideally suited for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40°C to 85°C.
Technical documentation
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View all 3 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | SOT23 Step-Down Controller. datasheet | 17 Jun 2003 | |
| Application note | Using Ceramic Output Capacitors With The TPS6420x Buck Controllers (Rev. B) | 11 Mar 2010 | ||
| Application note | 5 A Buck Converter Using the TPS6420x Family of Step Down Controllers | 17 Jun 2004 |
Design & development
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Evaluation board
TPS64202EVM-023 — TPS64202 Evaluation Module (3.3V @ 2A)
The TPS64202EVM-023 is an evaluation tool for the TPS64202 inductive step-down controller in SOT-23 package which can supply voltages down to 1.2V from a 1.8-V to 6.5-V input. The TPS64202EVM-023 uses a TPS64202 adjustable output step-down controller and the appropriate external components to (...)
User guide: PDF
| Package | Pins | Download |
|---|---|---|
| SOT-23 (DBV) | 6 | View options |
Ordering & quality
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Support & training
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