- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98285 > TPS62751DSKR (TEXAS INSTRUMENTS INC) 1.8 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 PDF資料下載
參數(shù)資料
| 型號(hào)： | TPS62751DSKR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.8 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 2.50 X 2.50 MM, GREEN, PLASTIC, SON-10 |
| 文件頁數(shù)： | 9/30頁 |
| 文件大?。?/td> | 1733K |
| 代理商： | TPS62751DSKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
AV IN
PGND
EN
FB
VIN
10F
VOUT
CIN
2.2H
CO
ILIM_L
RLIM_L
H/L
Wireless
BB + PMIC
TPS62750
PA
PMU, DCDC, LDO
3.7V
WirelessModule
ILIM_U
GND
CBUFF
RLIM_U
R1
R2
Cff
USB
5.0V
1
OUT
REF
2
R
V
= V
1 +
with an internal reference voltage VREF typical 0.6V
R
÷
è
www.ti.com ................................................................................................................................................. SLVS955A – JULY 2009 – REVISED SEPTEMBER 2009
APPLICATION INFORMATION
Figure 26. TPS62750DSK in a typical USB Datacard application
A growing variety of applications in notebooks, PCs and other mobile systems, TDMA data communication
techniques, which require peak current (typically 2A) during the transmission of signals that can exceed the
maximum current specified by the USB standard. Therefore, the application must be designed to limit the input
power and draw on card-based storage for most of the energy requirement during a typical transmission cycle.
A typical GSM signal is transmitted over the carrier at a rate of 216 Hz (4.616ms pulse repetition interval). The
transmission period is divided into eight time slots and depending on the power class being used, the duty cycle
of this high current pulse can range anywhere between one-eighth of the cycle (577us) up to half of the
transmission cycle (2.308ms).
The TPS62750 external current limit programming resistors can be easily used to adjust the required input
current limit, thereby allowing the user to stay well within the specification requirement stipulated by USB. The
TPS62750 is a high efficiency buck converter with programmable input average current limit that provides the
needed flexibility when designing a GSM/GPRS power supply solution. The high efficiency of the converter
maximizes the average output power without overloading the bus. A bulk output capacitor is used to supply the
energy and maintain the output voltage during the high current pulses
OUTPUT VOLTAGE SETTING
(1)
To minimize the current through the feedback divider network, we recommend that the R2 resistor value be 180k.
The sum of R1 and R2 should not exceed ~1.5M
, to keep the network robust against noise.
An external feed forward capacitor Cff is required for optimum load transient response. The value of Cff should be
a minimum of 470pF (see table below). Route the FB line away from noise sources, such as the inductor or the
SW line.
OUTPUT CAPACITOR
FEEDFORWARD CAPACITOR
1 mF – 2.5 mF
470 pF
> 2.5 mF
1 nF
Copyright 2009, Texas Instruments Incorporated
17
Product Folder Link(s) :TPS62750, TPS62751
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS63000IDRCRQ1 | 2.1 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS65011RGZT | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC48 |
| TPS65023QRHARQ1 | POWER SUPPLY SUPPORT CKT, PQCC40 |
| TPS65040ZQER | 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA71 |
| TPS650531IRGERQ1 | POWER SUPPLY SUPPORT CKT, PQCC24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62751DSKT | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 92% Eff Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62770EVM-734 | 功能描述:TPS62770 - DC/DC, Step Up or Down 2, Non-Isolated Outputs Evaluation Board 制造商:texas instruments 系列:- 零件狀態(tài):有效 主要用途:DC/DC，步升/步降 輸出和類型:2，非隔離 功率 - 輸出:- 電壓 - 輸出:- 電流 - 輸出:- 電壓 - 輸入:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)?降壓-升壓 頻率 - 開關(guān):- 板類型:完全填充 所含物品:板 使用的 IC/零件:TPS62770 標(biāo)準(zhǔn)包裝:1 |
| TPS62770YFPT | 功能描述:Buck, Boost Switching Regulator IC Positive Programmable 1V, 4.5V (12V) 2 Output 300mA, 30mA, 100mA, 200mA 16-XFBGA, DSBGA 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 功能:升壓，降壓 輸出配置:正 拓?fù)?降壓，升壓 輸出類型:可編程 輸出數(shù):2 電壓 - 輸入（最小值）:2.5V 電壓 - 輸入（最大值）:5.5V 電壓 - 輸出（最小值/固定）:1V，4.5V（12V） 電壓 - 輸出（最大值）:3V，15V 電流 - 輸出:300mA，30mA，100mA，200mA 頻率 - 開關(guān):1.05MHz 同步整流器:是 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:16-XFBGA，DSBGA 供應(yīng)商器件封裝:16-DSBGA 標(biāo)準(zhǔn)包裝:1 |
| TPS63000DRCR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 96% Buck Boost Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS63000DRCRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 96% Buck Boost Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。