參數(shù)資料
型號: TPS54260DGQR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝: GREEN, PLASTIC, MSOP-10
文件頁數(shù): 1/49頁
文件大?。?/td> 1808K
代理商: TPS54260DGQR
DRC
DGQ
0
10
20
30
40
50
60
70
80
100
0
0.5
1.0
1.5
2.0
I - Output Current - A
O
Efficiency
-
%
2.5
3.0
90
VIN=12V
VOUT=3.3V
fsw=300kHz
PH
VIN
GND
BOOT
VSENSE
COMP
TPS54260
EN
RT /CLK
SS /TR
PWRGD
www.ti.com
SLVSA86A – MARCH 2010 – REVISED DECEMBER 2010
3.5V to 60V INPUT, 2.5A, STEP DOWN CONVERTER WITH ECO-MODE
Check for Samples: TPS54260
1
FEATURES
0.8-V Internal Voltage Reference
2
3.5V to 60V Input Voltage Range
10-Pin MSOP and 10-Pin 3mm × 3mm SON
with PowerPAD Packages
200-m
High-Side MOSFET
Supported by SwitcherPro Software Tool
High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode
138mA Operating Quiescent Current
For SWIFT Documentation, See the TI
1.3mA Shutdown Current
100kHz to 2.5MHz Switching Frequency
Synchronizes to External Clock
APPLICATIONS
Adjustable Slow Start/Sequencing
12-V, 24-V and 48-V Industrial and Commercial
Low Power Systems
UV and OV Power Good Output
GSM, GPRS Modules in Fleet Management,
Adjustable UVLO Voltage and Hysteresis
E-Meters, and Security Systems
DESCRIPTION
The TPS54260 device is a 60V, 2.5A, step down regulator with an integrated high side MOSFET. Current mode
control provides simple external compensation and flexible component selection. A low ripple pulse skip mode
reduces the no load, regulated output supply current to 138mA. Using the enable pin, shutdown supply current is
reduced to 1.3mA, when the enable pin is low.
Under voltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage
startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open
drain power good signal indicates the output is within 94% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold
back and thermal shutdown protects the part during an overload condition.
The TPS54260 is available in 10-pin thermally enhanced MSOP and 10-pin 3mm × 3mm SON PowerPAD
packages.
SIMPLIFIED SCHEMATIC
EFFICIENCY vs LOAD CURRENT
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.
2
Eco-Mode, PowerPAD, SwitcherPro, SWIFT are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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