- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384863 > R1212D101C (Ricoh Co., Ltd.) STEP-UP DC/DC CONTOLLER PDF資料下載
參數(shù)資料
| 型號(hào)： | R1212D101C |
| 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)： | 1/41頁 |
| 文件大?。?/td> | 690K |
| 代理商： | R1212D101C |
當(dāng)前第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 SERIES
STEP-UP DC/DC CONTOLLER
NO.EA-109-0607
OUTLINE
1
The R1212D Series are CMOS-based PWM step-up DC/DC converter controllers with low supply current.
Each of the R1212D Series consists of an oscillator, a PWM comparator circuit, a reference voltage unit, an
error amplifier, a reference current unit, a protection circuit, and an under voltage lockout (UVLO) circuit. A low
ripple, high efficiency step-up DC/DC converter can be composed of this IC with some external components, or
an inductor, a diode, a power MOSFET, divider resisters, and capacitors.
Maximum duty cycle and the soft start time are easily adjustable with external resistors and capacitors. In
terms of maximum duty cycle, with or without internal limit can be set by mask options. As for the protection
circuit, after the soft-starting time, if the maximum duty cycle is continued for a certain period, the R1212D Series
latch the external driver with its off state, or the latch-type protection circuit works.
The delay time for latch the state can be set with an external capacitor.
To release the protection circuit, restart with power-on (Voltage supplier is equal or less than UVLO detector
threshold level).
FEATURES
Input Voltage Range .......................................................2.2V to 5.5V
Built-in Latch-type Protection Function (Output Delay Time can be set with an external capacitor)
Two Options of Basic Oscillator Frequency....................700kHz, 1.4MHz, 300kHz
Maximum Duty Cycle/Soft-start time .............................Adjustable with external capacitors
High Reference Voltage Accuracy ..................................±1.5%
U.V.L.O. Threshold level.................................................Typ.1.9V/2.1V/2.8V by mask option
Small Temperature Coefficient of Reference Voltage ...Typ.±150ppm/°C
Package..........................................................................SON-8 ( t
=
Max. 0.9mm )
APPLICATIONS
(If internal limit is set by version, Typ. 90% or Typ. 91.5%)
Constant Voltage Power Source for portable equipment.
Constant Voltage Power Source for LCD and CCD.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R1212D102A | STEP-UP DC/DC CONTOLLER |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1212D102A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:STEP-UP DC/DC CONTOLLER |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。