1.8 to 6.5 V input, 350 kHz, 95% efficient step-down controller, 20 uA, SOT-23
Product details
Parameters
Package | Pins | Size
Features
- 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
Description
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
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | SOT23 Step-Down Controller datasheet | Jun. 17, 2003 |
| Application note | 4Q 2010 Issue Analog Applications Journal | Nov. 15, 2010 | |
| Application note | Using Ceramic Output Capacitors With The TPS6420x Buck Controllers (Rev. B) | Mar. 11, 2010 | |
| Application note | 5 A Buck Converter Using the TPS6420x Family of Step Down Controllers | Jun. 17, 2004 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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 (...)
Features
The development tool includes:
- A tested TPS64202EVM-023 evaluation module with TPS64202DBV IC
- A user's guide (SLVU093) that contains:
- Schematic
- Bill of materials
- Component placement
- Layout and setup of the EVM
- A datasheet of the TPS6420x family of devices (SLVS485)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOT-23 (DBV) | 6 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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