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參數資料
| 型號： | TPS40197RGYR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封裝： | PLASTIC, MO-241BB, VQFN-16 |
| 文件頁數： | 12/30頁 |
| 文件大小： | 931K |
| 代理商： | TPS40197RGYR |
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TI Information — Selective Disclosure
SLUS886 – NOVEMBER 2008
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.
DESCRIPTION
Short circuit detection is done by sensing the voltage drop across the low-side FET when it is on and comparing
it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external
resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched.
Pulse by pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side FET
when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the
controller senses an output short circuit, both FETs are turned off and a timeout period is observed before
attempting to restart. This provides limited power dissipation in the event of a sustained fault.
ORDERING INFORMATION(1)
MINIMUM
ORDERING PART
OUTPUT
TA
PACKAGE
PINS
ORDER
NUMBER
SUPPLY
QUANTITY
TPS40197RGYT
Tube
250
Plastic Quad
–40°C to 85°C
16
Flatpack
TPS40197RGYR
Tape-and-Reel
3000
(1)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
(1)
over operating free-air temperature range (unless otherwise noted)
VALUE
UNIT
VDD, EN
–0.3 to 20
SW
–5 to 25
Input voltage range
BOOT, HDRV
–0.3 to 30
V
BOOT–SW, HDRV–SW
–0.3 to 6
FB, BP, LDRV, PGOOD, REF
–0.3 to 6
COMP
–0.3 to 3.5
Output voltage range
V
VID0, VID1, VID2, VID3
–0.3 to 2
Operating junction temperature range, TJ
–40 to150
°C
Storage temperature, Tst
–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.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
Supply voltage
VDD
4.5
14
V
Operating junction temperature, TJ
–40
125
°C
2
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS40197
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相關代理商/技術參數 |
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| TPS40197RGYT | 功能描述:DC/DC 開關控制器 4.5-14V Inp Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40-20 | 制造商:TOTAL-POWER 制造商全稱:TOTAL-POWER 功能描述:40 WATT OPEN - FRAME SWITCHING POWER SUPPLY |
| TPS40200 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDE INPUT RANGE NON-SYNCHRONOUS VOLTAGE MODE CONTROLLER |
| TPS40200_08 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDE INPUT RANGE NON-SYNCHRONOUS VOLTAGE MODE CONTROLLER |
| TPS40200_081 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDE INPUT RANGE NON-SYNCHRONOUS VOLTAGE MODE CONTROLLER |
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