product properties:
| TYPE | DESCRIBE |
| category | Integrated Circuit (IC) PMIC - Voltage Regulators - DC DC Switching Regulators |
| manufacturer | Texas Instruments |
| series | SWIFT™ |
| Package | Tape and Reel (TR) Shear Band (CT) Digi-Reel® Custom Reel |
| product status | in stock |
| Function | Buck |
| output configuration | just |
| topology | Buck |
| output type | adjustable |
| Number of outputs | 1 |
| Voltage - Input (Min) | 2.95V |
| Voltage - Input (Max) | 6V |
| Voltage - Output (min/fixed) | 0.827V |
| Voltage - Output (Maximum) | 4.5V |
| Current - Output | 3A |
| Frequency - switch | 300kHz ~ 2MHz |
| Synchronous Rectifier | Yes |
| Operating temperature | -40°C ~ 150°C (TJ) |
| installation type | Surface Mount Type |
| Package/Enclosure | 16-WFQFN Exposed Pad |
| Supplier Device Packaging | 16-WQFN (3x3) |
| Basic product number | TPS54319 |
Environment and Export Classification:
| ATTRIBUTES | DESCRIBE |
| RoHS status | Compliant with ROHS3 specification |
| Moisture Sensitivity Level (MSL) | 2 (1 year) |
| REACH status | Non-REACH products |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down
Switcher With Integrated FETs ( SWIFT™)
1
FEATURES
DESCRIPTION
2
• Two 45-mΩ (typical) MOSFETs for High
The TPS54319 device is a full featured 6 V, 3 A,
Efficiency at 3-A Loads
synchronous step down current mode converter with
two integrated MOSFETs.
•
300kHz to 2MHz Switching Frequency
•
0.8 V ± 3.0% Voltage Reference Over
The TPS54319 enables small designs by integrating
the MOSFETs, implementing current mode control to
Temperature (0°C to 85°C)
reduce external component count, reducing inductor
•
Synchronizes to External Clock
size by enabling up to 2 MHz switching frequency,
•
Adjustable Slow Start/Sequencing
and minimizing the IC footprint with a small 3mm x
•
UV and OV Power Good Output
3mm thermally enhanced QFN package.
•
–40°C to 150°C Operating Junction
The TPS54319 provides accurate regulation for a
Temperature Range
variety of loads with an accurate ±3.0% Voltage
Reference (VREF) over temperature.
•
Thermally Enhanced 3mm × 3mm 16-pin QFN
•
Pin Compatible to TPS54318
Efficiency is maximized through the integrated 45mΩ
MOSFETs and 360mA typical supply current. Using
the enable pin, shutdown supply current is reduced to
APPLICATIONS
2 µA by entering a shutdown mode.
•
Low-Voltage, High-Density Power Systems
•
Point-of-Load Regulation for Consumer
Under voltage lockout is internally set at 2.6 V, but
Applications such as Set Top Boxes, LCD
can be increased by programming the threshold with
Displays, CPE Equipment
a resistor network on the enable pin. The output
voltage startup ramp is controlled by the slow start
pin. An open drain power good signal indicates the
SIMPLIFIED SCHEMATIC
output is within 93% to 107% of its nominal voltage.
vertical spacer
Frequency fold back and thermal shutdown protects
vertical spacer
the device during an over-current condition.
The TPS54319 is supported in the SwitcherPro™
Software Tool at www.ti.com/switcherpro.
