Step-Down Controller. TPS51211 Datasheet

TPS51211 Controller. Datasheet pdf. Equivalent

Part TPS51211
Description Single Synchronous Step-Down Controller
Feature TPS51211 www.ti.com SLUSAA7B – NOVEMBER 2010 – REVISED MAY 2013 High-Performance, Single Synchrono.
Manufacture etcTI
Datasheet
Download TPS51211 Datasheet



TPS51211
TPS51211
www.ti.com
SLUSAA7B – NOVEMBER 2010 – REVISED MAY 2013
High-Performance, Single Synchronous Step-Down
Controller For Notebook Power Supply
FEATURES
1
2 Wide Input Voltage Range: 3 V to 28 V
• Output Voltage Range: 0.7 V to 2.6 V
• Wide Output Load Range: 0 to 20A+
• Built-in 0.5% 0.7 V Reference
• 290-kHz, Adaptive On-Time D-CAP™ MODE
Control
• 4700 ppm/°C RDS(on) Current Sensing
• Internal 1-ms Voltage Servo Soft-start
• Pre-Charged Start-up Capability
• Built in Output Discharge
• Power Good Output
• Integrated Boost Switch
• Built-in OVP/UVP/OCP
• Thermal Shutdown (Non-latch)
• SON-10 (DSC) Package
APPLICATIONS
• Notebook Computers
• I/O Supplies
• System Power Supplies
DESCRIPTION
The TPS51211 is a small-sized single buck controller
with adaptive on-time D-CAP™ mode. The device is
suitable for low output voltage, high current, PC
system power rail and similar point-of-load (POL)
power supply in digital consumer products. A small
package with minimal pin-count saves space on the
PCB, while a dedicated EN pin and pre-set frequency
minimize design effort required for new designs. The
skip-mode at light load condition, strong gate drivers
and low-side FET RDS(on) current sensing supports
low-loss and high efficiency, over a broad load range.
The conversion input voltage which is the high-side
FET drain voltage ranges from 3 V to 28 V and the
output voltage ranges from 0.7 V to 2.6 V. The device
requires an external 5-V supply. The TPS51211 is
available in a 10-pin SON package specified from
–40°C to 85°C.
TYPICAL APPLICATION CIRCUIT
V5IN
VIN
TPS51211
1 PGOOD VBST 10
2 TRIP
DRVH 9
EN
3 EN
SW 8
4 VFB
V5IN 7
5 TST
DRVL 6
GND
VOUT
VOUT_GND
UDG-10160
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
D-CAP is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated



TPS51211
TPS51211
SLUSAA7B – NOVEMBER 2010 – REVISED MAY 2013
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
TA
–40°C to 85°C
ORDERING INFORMATION
PACKAGE
ORDERING DEVICE
NUMBER
PINS
TPS51211DSCR
10
Plastic SON PowerPAD
TPS51211DSCT
10
OUTPUT
SUPPLY
Tape and reel
Mini reel
MINIMUM
QUANTITY
3000
250
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
VALUE
UNIT
Input voltage range(2)
VBST
VBST (3)
SW
–0.3 to 37
–0.3 to 7
V
–5 to 30
V5IN, EN, TRIP, VFB, TST
–0.3 to 7
Output voltage range(2)
DRVH
DRVH (3)
DRVH(3), pulse width < 20 ns
DRVL
–5 to 37
–0.3 to 7
–2.5 to 7
V
–0.5 to 7
DRVL, pulse width < 20 ns
–2.5 to 7
PGOOD
–0.3 to 7
TJ
TSTG
Junction temperature range
Storage temperature range
150
°C
–55 to 150
°C
(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.
(2) All voltage values are with respect to the network ground terminal unless otherwise noted.
(3) Voltage values are with respect to the SW terminal.
DISSIPATION RATINGS
2-oz. trace and copper pad with solder.
PACKAGE
10-pin DSC(1)
TA < 25°C
POWER RATING
1.54 W
DERATING FACTOR
ABOVE TA = 25°C
15 mW/°C
TA = 85°C
POWER RATING
0.62 W
(1) Enhanced thermal conductance by thermal vias is used beneath thermal pad as shown in Land Pattern information.
2
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Copyright © 2010–2013, Texas Instruments Incorporated





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