- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299873 > RP505K091A-TR (RICOH COMPANY LTD) SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | RP505K091A-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 2 X 2 MM, HALOGEN FREE AND ROHS COMPLIANT, DFN-8 |
| 文件頁數(shù)： | 4/32頁 |
| 文件大?。?/td> | 938K |
| 代理商： | RP505K091A-TR |
第1頁第2頁第3頁當前第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頁第32頁
RP505K
12
Forced PWM Mode Control and VFM Mode Control
By setting the Mode pin to H, the IC switches the frequency at the fixed rate to reduce noise even when output
load is light. Therefore, when IOUT is IL/2 or less, ILmin becomes less than 0. That is, the IC discharges the
electrical charge in CL to the IC side until the IL changes from ILmin to 0 during ton time, and the IL changes from
0 to ILmin during toff time.
Forced PWM Mode Control
ILmax
ILmin
ton
toff
T=1/fosc
IL
IOUT
t
0
Δ
IL
By setting the Mode pin to L, the IC automatically switches into VFM mode for high efficiency when output load
is light. Under VFM mode, ton indicates the time until the IC reaches to the pre-set ILmax. With the RP505K
Series, ILmax during VFM control is pre-set to 280mA or so. However, even if the IC is not reached to ILmax yet,
ton turns off when it becomes around 1.5 times of T=1/fosc.
VFM Mode Control
ILmax
ILmin
ton
toff
IL
t
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RP505K181A-TR | SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| RP505K061B-TR | SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| RPM870-H14 | IrDA wireless communication transceiver IC (supports Ver. 1.2 Low Power) |
| RQ5RW15BB | FIXED POSITIVE REGULATOR, PDSO4 |
| RD5RW60CB | FIXED POSITIVE REGULATOR, DSO6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RP-505S | 制造商:RECOM 制造商全稱:Recom International Power 功能描述:1 Watt SIP7 SIP7 Single & Dual Output |
| RP-509D | 制造商:RECOM 制造商全稱:Recom International Power 功能描述:1 Watt SIP7 SIP7 Single & Dual Output |
| RP-509S | 制造商:RECOM 制造商全稱:Recom International Power 功能描述:1 Watt SIP7 SIP7 Single & Dual Output |
| RP50GB | 制造商:Superior Electric 功能描述:Electrical Connector; Pin Receptacle; 0.25 in.; 1.25 in.; 0.25 in. (Max.); 50 A 制造商:Superior Electric 功能描述:RECEPTACLE PIN 50A BLACK 制造商:Superior Electric 功能描述:RECEPTACLE, PIN, 50A, BLACK 制造商:Superior Electric 功能描述:TEST RECEPTACLE, PIN-RCPT, 50A, WW, BLK; Series:RP50; Gender:Receptacle; Voltage Rating:250V; Current Rating:50A; Connector Mounting:Cable; Contact Termination:Wire Wrap; Body Material:Nylon Plastic; Color:Black ;RoHS Compliant: Yes 制造商:Superior Electric 功能描述:Conn Binding Post PIN 1 POS ST Panel Mount 1 Port |
| RP50GB | 制造商:Superior Electric 功能描述:Test Spring Probe |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。