參數(shù)資料
型號(hào)： LM26480QSQX-CF/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 2.4 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, QCC24
封裝： 4 X 4 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, LLP-24
文件頁(yè)數(shù)： 16/30頁(yè)
文件大小： 2455K
代理商： LM26480QSQX-CF/NOPB
INPUT CAPACITOR SELECTION FOR SW1 AND SW2
It is required to use a ceramic input capacitor of at least 4.7
μF and 6.3V with an ESR of less than 500 m.
The input power source supplies average current continu-
ously. During the PFET switch on-time, however, the de-
manded di/dt is higher than can be typically supplied by the
input power source. This delta is supplied by the input capac-
itor.
A simplified “worst case” assumption is that all of the PFET
current is supplied by the input capacitor. This will result in
conservative estimates of input ripple voltage and capacitor
RMS current. Input ripple voltage is estimated as follows:
V
PPIN:
Estimated peak-to-peak input ripple voltage
I
OUT:
Output current, Amps
C
IN:
Input capacitor value, Farads
ESR
IN:
Input capacitor ESR, Ohms
This capacitor is exposed to significant RMS current, so it is
important to select a capacitor with an adequate RMS current
rating. Capacitor RMS current estimated as follows:
I
RSCIN
Estimated input capacitor RMS current
Model
Type
Vendor
Voltage Rating
Case Size
4.7 F for CIN
C2012X5R0J475K
Ceramic, X5R
TDK
6.3V
0805, (2012)
JMK212BJ475K
Ceramic, X5R
Taiyo-Yuden
6.3V
0805, (2012)
GRM21BR60J475K
Ceramic, X5R
Murata
6.3V
0805, (2012)
C1608X5R0J475K
Ceramic, X5R
TDK
6.3V
0603, (1608)
10 F for COUT
GRM21BR60J106K
Ceramic, X5R
Murata
6.3V
0805, (2012)
JMK212BJ106K
Ceramic, X5R
Taiyo-Yuden
6.3V
0805, (2012)
C2012X5R0J106K
Ceramic, X5R
TDK
6.3V
0805, (2012)
C1608X5R0J106K
Ceramic, X5R
TDK
6.3V
0603, (1608)
23
www.national.com
LM26480
相關(guān)PDF資料
PDF描述
LM26480QSQ-CF/NOPB 2.4 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, QCC24
LM26480SQ-BF/NOPB 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24
LM26480SQX-BF/NOPB 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24
LM2661M/NOPB SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8
LM2660MMX/NOPB SWITCHED CAPACITOR CONVERTER, 40 kHz SWITCHING FREQ-MAX, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM26480SQ-AA 制造商:Texas Instruments 功能描述:DC/ DC STEP DOWN, DUAL LINEAR REG, IC
LM26480SQ-AA/NOPB 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) DUAL HI-CRNT STEP- DOWN DC/DC RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L
LM26480SQ-AA/S7002404 制造商:Texas Instruments 功能描述:
LM26480SQ-AAEV 功能描述:BOARD EVALUATION LM26480SQ-AA RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
LM26480SQ-AAEV/NOPB 功能描述:電源管理IC開發(fā)工具 LM26480SQ-AAEV EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*