- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384863 > R1212D102A (Ricoh Co., Ltd.) STEP-UP DC/DC CONTOLLER PDF資料下載
參數(shù)資料
| 型號： | R1212D102A |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | STEP-UP DC/DC CONTOLLER |
| 中文描述： | 升壓型DC /直流位指示 |
| 文件頁數(shù)： | 15/41頁 |
| 文件大?。?/td> | 690K |
| 代理商： | R1212D102A |
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頁當(dāng)前第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頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
R1212D
15
<Latch Protection Operation>
The operation of Latch protection circuit is as follows: When AMPOUT becomes "H" and the IC detects
maximum duty cycle, charge to an external capacitor, C2 of D
ELAY
pin starts. The maximum duty cycle continues
and the voltage of DELAY pin reaches delay voltage detector threshold, V
DLY
, outputs "L" to EXT pin and turns off
the external power MOSFET.
To release the latch protection operation, make the supply voltage down to UVLO detector threshold or lower,
and make it rise up to the normal input voltage.
Once after becoming the maximum duty cycle, if the duty cycle decreases before latch operation works, the
charging the capacitor stops immediately, and the DELAY pin voltage is fixed at GND level with I
DLY2
.
The delay time of latch protection can be calculated with C2, V
DLY
, and the delay pin charge current, I
DLY1
, as in
the next formula.
t
=
C2
×
V
DLY
/I
DLY1
Output Short
A
MPOUT
Normal
Maxduty Operation
Latched
DTC
D
ELAY
EXT
C
2
I
DLY1
DELAY
V
DLY
V
DLY
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R1212D102C | STEP-UP DC/DC CONTOLLER |
| R1224N | PWM/VFM step-down DC/DC Converter |
| R1224N102G | PWM/VFM step-down DC/DC Converter |
| R1224N102H | PWM/VFM step-down DC/DC Converter |
| R1224N102M | PWM/VFM step-down DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1212D102C | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:STEP-UP DC/DC CONTOLLER |
| R121315000 | 制造商:Radiall 功能描述:BULKHEAD JACK SOLDER TYPE CABLE - Bulk |
| R121315009 | 功能描述:RF 連接器 PR DR ECR SOUD CABLE .085 RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點(diǎn)電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R121316000 | 制造商:Radial 功能描述:Connector COAX |
| R121316-000 | 制造商:Radial 功能描述:Connector COAX |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。