參數資料
型號： TPS51117RGYRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PQCC14
封裝： GREEN, PLASTIC, MO-241BA, VQFN-14
文件頁數： 1/30頁
文件大?。?/td> 926K
代理商： TPS51117RGYRG4
1
2
3
14
13
12
VBST
DRVH
LL
EN_PSV
TON
VOUT
TPS51117RGY
4
5
6
7
11
10
9
8
TRIP
V5DRV
DRVL
PGND
V5FILT
VFB
PGOOD
GND
+
VOUT
0.75V~5.5V
Q2
L1
Q1
-
PGND
C2
C4
C1
R6
PGOOD
+5V
EN_PSV
R4
R1
R2
R3
R5
VIN
1.8V~28V
C3
GND
+
GND
www.ti.com...................................................................................................................................... SLVS631B – DECEMBER 2005 – REVISED SEPTEMBER 2009
SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER
Check for Samples :TPS51117
1
FEATURES
DESCRIPTION
2
High Efficiency, Low Power Consumption,
4.5-
μA Typical Shutdown Current
The TPS51117 is a cost effective, synchronous buck
controller for POL voltage regulation in notebook PC
Fixed Frequency Emulated On-Time Control,
applications. The controller is dedicated for Adaptive
Adjustable from 100 kHz to 550 kHz
On-Time D-CAP Mode operation that provides
D-CAP Mode with 100-ns Load Step
ease of use, low external component count, and fast
Response
transient response. Auto-skip mode for high efficiency
< 1% Initial Reference Accuracy
down to the milli-ampere load range, or PWM-only
mode for low noise operation is selectable.
Output Voltage Range: 0.75 V to 5.5 V
Wide Input Voltage Range: 1.8 V to 28 V
The current sensing scheme for positive overcurrent
and negative overcurrent protection is loss-less
Selectable Auto-Skip/PWM-Only Operation
low-side
RDS(on)
sensing
plus
temperature
Temperature Compensated (4500 ppm/°C)
compensation. The device receives a 5-V (4.5 V to
Low-Side RDS(on) Overcurrent Sensing
5.5 V) supply from another regulator such as the
Negative Overcurrent Limit
TPS51120 or TPS51020. The conversion input can
be either VBAT or a 5-V rail, ranging from 1.8 V to
Integrated Boost Diode
28 V, and the output voltage range is from 0.75 V to
Integrated OVP/UVP and Thermal Shutdown
5.5 V.
Power-Good Signal
The TPS51117 is available in a 14-pin QFN or a
Internal 1.2-ms Voltage Softstart
14-pin TSSOP package and is specified from –40°C
Integrated Output Discharge (Softstop)
to 85°C.
APPLICATIONS
Notebook Computers
I/O Supplies
System Power Supplies
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
D-CAP is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2005–2009, 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.
相關PDF資料
PDF描述
TPS51117RGYTG4 SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PQCC14
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相關代理商/技術參數
參數描述
TPS51117RGYR-P 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:
TPS51117RGYT 功能描述:DC/DC 開關控制器 Wide Vin 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
TPS51117RGYTG4 功能描述:DC/DC 開關控制器 Wide Vin 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
TPS51120 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL CURRENT MODE, SYNCHRONOUS STEP-DOWN CONTROLLER WITH 100-mA STANDBY REGULATORS FOR NOTEBOOK SYSTEM POWER
TPS51120EVM-001 功能描述:電源管理IC開發(fā)工具 TPS51120-001 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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