The TPS82671, TPS82672, TPS82675, TPS82690 and TPS82695 devices are series of high-frequency, synchronous, step-down dc-dc converters optimized for battery-powered portable applications. Intended for low-power applications, the TPS8267x support up to 600mA load current and the TPS8269 support up to 500mA and all allow the use of low-cost chip inductors and capacitors.
With a wide input voltage range of 2.3V to 4.8V, the devices support applications powered by lithium-ion (Li-Ion) batteries with extended voltage ranges. Different fixed voltage output versions of the TPS826xx are available.
These converters operate at a regulated 5.5 MHz (TPS8267x) and 4 MHz (TPS8269x) switching frequency and enter a power-save mode operation under light load currents in order to maintain high efficiency over the entire load current range. A PFM mode extends the battery life by reducing the quiescent current to 17µA (typ) during light load operation.
| Manufacturer | Texas Instruments |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | 296-30303-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Board not Stocked
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
1.5 V
|
| Current Out |
600 mA
|
| Voltage In |
2.3 ~ 4.8 V
|
| Efficiency @ Conditions |
>90%, 2.7V in, 1.8V @ 10 ~ 300 mA
>85%, 4.2V in, 1.8V @ 10 ~ 300 mA |
| Voltage Out Range |
- Fixed
|
| Features |
Light Load Mode
Over Current Protection PFM or PWM Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
5.5 MHz
|
| Standby Current [Typical] |
500 nA
|
| Quiescent Current [Typical] |
17 µA
|
| Component Count + Extras |
2 + 10
|
| Internal Switch |
Yes
|
| Design Author |
Texas Instruments
|
| Application / Target Market |
Cell Phones
Point of Load (PoL) |
| Standby Current [Maximum] |
5 µA
|
| Quiescent Current [Maximum] |
40 µA
|
| Main I.C. Base Part |
TPS82672
|
| Date Created By Author | 2010-10 |
| Date Added To Library | 2012-12 |