- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄297336 > S-8460B00AFT-TB 0.1 A SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO16 PDF資料下載
參數(shù)資料
| 型號： | S-8460B00AFT-TB |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.1 A SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 32/33頁 |
| 文件大?。?/td> | 617K |
| 代理商： | S-8460B00AFT-TB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第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頁第31頁當前第32頁第33頁
STEP-UP OR DOWN, SINGLE-COIL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8460
Rev.1.2_00
8
Seiko Instruments Inc.
1. 2 Step-up Operation
Parasitic diode
SW2
LX1
SW1
COUT
VOUT
SD1
VIN
SW3
ON/OFF
Figure 7
Step-up operation is carried out by setting SW1 : ON, SW2 : OFF, and toggling SW3. The voltage VIN
+ VL is
needed at the BST pin to turn SW1 on. For this purpose, the BST pin voltage (CBST) is charged to the VL voltage
by the switch combination SW1 : OFF, SW2 : ON for approximately 200 ns just after SW3 is turned off, and the
BST pin is then bootstrapped to VIN
+ VL by SW1 : ON, SW2 : OFF.
SW2 is turned on after SW1 is turned off and SW1 is turned on after SW2 is turned off to avoid the large current to
flow between VIN and VSS if SW1 and SW2 are turned on simultaneously. When the two switches, SW1 and SW2,
are turned off, current flows to VOUT through the parasitic diode of SW2. In some MOS FETs current is not
allowed to flow through the parasitic diode. In this case, a Schottky diode must be connected parallel to the MOS
FET.
1. 3 Step-down Operation
SW2
ON/OFF
SW1 ON/OFF
COUT
VOUT
SD1
VIN
SW3
OFF
Parasitic diode
Figure 8
Step-down operation is carried out by synchronous switching of SW1 and SW2, and keeping SW3 open.
The BST pin voltage is kept at VIN
+ VL, since the switches, SW1 and SW2, repeat toggling in each period in step-
down operation.
相關PDF資料 |
PDF描述 |
|---|---|
| S-8521C31MC-BTQ-T2 | 0.05 A SWITCHING CONTROLLER, 75 kHz SWITCHING FREQ-MAX, PDSO5 |
| S-8520B31MC-ARQ-T2 | 0.05 A SWITCHING CONTROLLER, 216 kHz SWITCHING FREQ-MAX, PDSO5 |
| S-8520A28MC-AVN-T2 | 0.05 A SWITCHING CONTROLLER, 216 kHz SWITCHING FREQ-MAX, PDSO5 |
| S-8520D27MC-BVM-T2 | 0.05 A SWITCHING CONTROLLER, 75 kHz SWITCHING FREQ-MAX, PDSO5 |
| S-88502F-T1 | 5 V FIXED POSITIVE REGULATOR, PDSO8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S-8460B00AFT-TBG | 功能描述:開關變換器、穩(wěn)壓器與控制器 2.5-6.0V Step-Up/Dwn RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| S846E2000M2 | 制造商:STEC Inc 功能描述:S800 SAS SSD 2.5" 15MM 2TB MLC COMMERCIAL (0C TO +60C) - Bulk |
| S846E200M1 | 制造商:STEC Inc 功能描述:S800 SAS SSD 1.8" 5MM 200GB MLC COMMERCIAL (0C TO +60C) - Bulk |
| S-8470 | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS POWER MANAGEMENT IC |
| S-8470AFS | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS POWER MANAGEMENT IC |
發(fā)布緊急采購，3分鐘左右您將得到回復。