參數(shù)資料
型號(hào)： AN32502A
英文描述： For Information·Communication - PDA
中文描述： 信息·通訊-掌上電腦
文件頁(yè)數(shù)： 42/45頁(yè)
文件大?。?/td> 574K
代理商： AN32502A
42
SDF00034AEB
AN32502A
Publication data: November 2002
Figure 7
1 shows the configuration of a backup battery charging circuit.
The circuit configuration is identical with the general linear regulator and continues to supply charging current until a backup
battery voltage reaches the voltage value shown by the following equation that is a balancing condition of regulator circuit.
Internal V
REF
is 1.0 V.
For a lithium ion coin battery, the above voltage is set to 3.0 V.
Determine R63 value according to the battery used, so as not to exceed maximum charging current specified.
This circuit is automatically switched off if the main battery voltage (Pin 46, VB1) becomes equal to or less than 3.1 V. Then, a
backup boost circuit starts operating.
This circuit is able to setting on/off with serial data.
Initial setting turns off at startup.
Power supply for this circuit is supplied from pin 46 (VB1).
46
6
47
VB1
SGND
FBB
48
V
REF
REGOUT
CTL
R
R
R63
Backup
battery
R61
R61 + R62
×
V
REF
Backup voltage
=
Application Notes (continued)
7
.
Backup
charging current
Figure 7
1
相關(guān)PDF資料
PDF描述
AN3294K VCR， Other/Special/Miscellaneous
AN3327K Record/Playback Amplifier for VCR
AN3726 MA31750 - Use of console mode
AN3727 MA31750 - Interrupt operations
AN3729 MA31750 - Bus arbiter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AN325-8 制造商: 功能描述: 制造商:undefined 功能描述:
AN325A 制造商:n/a 功能描述:Ships in 2 days
AN3-25A 制造商:AN# - MILITARY 功能描述:
AN3-26 制造商:AN# - MILITARY 功能描述:
AN3266FAP 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Video luminance signal recording/playback processing IC
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*