音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

R1211D002D-TR Datasheet

  • R1211D002D-TR

  • Step-up DC/DC Controller

  • 374.11KB

  • 33頁

  • RICOH

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

2001.8.30
Step-up DC/DC Controller
R1211X Series
s
OUTLINE
The R1211X Series are CMOS-based PWM step-up DC/DC converter controllers with low supply current.
Each of the R1211X Series consists of an oscillator, a PWM control 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.
Phase compensation has been made internally in the R1211X002B/D Series, while phase compensation can be
made externally as for R1211X002A/C Series. B/D version has stand-by mode. Max duty cycle is internally fixed
typically at 90%. Soft start function is built-in, and Soft-starting time is set typically at 9ms(A/B, 700kHz version) or
10.5ms(C/D, 300kHz version). As for the protection circuit, after the soft-starting time, if the maximum duty cycle is
continued for a certain period, the R1211X Series latch the external driver with its off state, or 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), or once after making the circuit be stand-by with chip enable pin and enable the circuit again.
s
FEATURES
q
Standby Current
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
TYP. 0碌A(chǔ) (for B/D version)
q
Input Voltage Range
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
2.5V to 6.0V
q
Built-in Latch-type Protection Function (Output Delay Time can be set with an external capacitor)
q
Two Options of Basic Oscillator Frequency
鈥?鈥?/div>
300kHz, 700kHz
q
Max Duty Cycle
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
Typ. 90%
q
High Reference Voltage Accuracy
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鹵1.5%
q
U.V.L.O. Threshold level
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
Typ. 2.2V (Hysteresis TYP. 0.13V)
q
Small Package
鈥?鈥?鈥?鈥?鈥?/div>
SOT-23-6W or thin (package height MAX. 0.85mm) SON-6 (Under Development)
s
APPLICATIONS
q
Constant Voltage Power Source for portable equipment.
q
Constant Voltage Power Source for LCD and CCD.
Rev. 1.10
-1-

R1211D002D-TR相關(guān)型號PDF文件下載

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！