Features: · Tracks Externally Applied Reference Voltage
· 60-mW MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current
· 6% to 90% VI Output Tracking Range
· Wide PWM Frequency: Fixed 350 kHz or Adjustable 280 kHz to 700 kHz
· Load Protected by Peak Current Limit and preThermal Shutdown
· Integrated Solution Reduces Board Area and Total Cost
Application· DDR Memory Termination Voltage
· Active Termination of GTL and SSTL High-Speed Logic Families
· DAC Controlled, High-Current Output Stage
· Precision Point-of-Load Power Supply
Pinout
Specifications
| |
TPS54372 |
UNIT |
| Input voltage range, VI |
VIN, SS/ENA, SYNC |
0.3 to 7 |
V |
| RT |
0.3 to 6 |
V |
| VSENSE |
0.3 to 4 |
V |
| BOOT |
0.3 to 17 |
V |
| Output voltage range, VO |
VBIAS, COMP, PWRGD |
0.3 to 7 |
V |
| PH |
0.6 to 10 |
V |
| Source current, IO |
PH |
Internally limited |
| COMP, VBIAS |
6 |
mA |
| Sink current |
PH |
|
A |
| COMP |
6 |
mA |
| SS/ENA, PWRGD |
10 |
mA |
| Voltage differential |
AGND to PGND |
±0.3 |
V |
| Continuous power dissipation |
See Power Dissipation
Rating Table |
| Operating virtual junction temperature range, TJ |
40 to 125 |
|
| Storage temperature, Tstg |
−65 to 150 |
|
| Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds |
300 |
|
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DescriptionAs a member of the SWIFT™ family of dc/dc regu-lators, the TPS54372 low-input voltage, high-out current, synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier, TPS54372 enables maximum performance under transient conditions and flexibility in choosing the output filter L and C components; an undervoltage-lockout circuit to pre- vent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to lim in-rush currents; and a status output to indicate valid operating conditions.
The TPS54372 is available in a thermally enhanced 20-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment devel-opment cycles.
TPS54372PWP_1132261 Data Sheet
