Features: · High Efficiency, Low Power Consumption,4.5-mA Typical Shutdown Current
· Fixed Frequency Emulated On-Time Control,Adjustable from 100 kHz to 550 kHz
· Fast Transient Response
· < 1% Initial Reference Accuracy
· Output Voltage Range: 0.75 V to 5.5 V
· Wide Input Voltage Range: 1.8 V to 28 V
· Selectable Auto-Skip/PWM-Only Operation
· Temperature Compensated (4500 ppm/°C) Low-Side RDS(on) Overcurrent Sensing
· Negative Overcurrent Limit
· Integrated Boost Diode
· Integrated OVP/UVP and Thermal Shutdown
· Power-Good Signal
· Internal 1.2-ms Voltage Softstart
· Output Discharge (Softstop)The above info is from (www.seekic.com)
Application· Notebook Computers
· I/O Supplies
· System Power SuppliesSpecifications
| |
VALUE |
UNIT |
| Input voltage range |
VBST |
0.3 to 36 |
V |
| VBST (with respect to LL) |
0.3 to 6 |
| EN_PSV, TRIP, V5DRV, V5FILT |
0.3 to 6 |
| VOUT |
0.3 to 6 |
| TON |
0.3 to 6 |
| Output voltage range |
DRVH |
1 to 36 |
V |
| DRVH (with respect to LL) |
0.3 to 6 |
| LL |
1 to 30 |
| PGOOD, DRVL |
0.3 to 6 |
| PGND |
0.3 to 0.3 |
| TA Operating free-air temperature |
40 to 85 |
|
| Tstg Storage temperature range |
55 to 150 |
|
| TJ Junction temperature range |
40 to 125 |
|
| Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds |
260 |
|
(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 ecommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device eliability.
Edited by (www.seekic.com) ,the biggest IC PDF and datasheet download site.
DescriptionThe TPS51117 is a cost effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for Adaptive On-Time D-CAP™ Mode operation that provides ease of use, low external component count, and excellent fast transient response at the same time.
Auto-skip mode of TPS51117 for high efficiency down to the milli-ampere load range, or PWM-only mode for low noise operation is selectable.
The current sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side RDS(on) sensing plus temperature compensation. The TPS51117 receives 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020 in the NBPC system. The conversion input can be either VBAT or 5-V rail,ranging from 1.8 V to 28 V, and the output voltage range is from 0.75 V to 5.5 V.
The TPS51117 is available in the 14-pin TSSOP package and is specified from 40°C to 85°C.
The above info is from (www.seekic.com)
TPS51117 Data Sheet
