- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361487 > TK65428MTL (TOKO INC) STEP-DOWN CONVERTER WITH BATTERY MONITOR PDF資料下載
參數(shù)資料
| 型號： | TK65428MTL |
| 廠商： | TOKO INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| 中文描述： | 0.1 A BATTERY CHARGE CONTROLLER, PDSO6 |
| 封裝： | SOT-23L, SMT-6 |
| 文件頁數(shù)： | 14/28頁 |
| 文件大?。?/td> | 762K |
| 代理商： | TK65428MTL |
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頁當(dāng)前第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
Page 14
TK654xx
September 1999 TOKO, Inc.
ADVANCED INFORMATION
The thresholds for the Low Battery Input (LBI) and the turnoff (V
OFF
) can be set independently using a single resistive
divider. Equations and a chart for selecting the LBI and V
OFF
thresholds are provided below:
LBI threshold = 1.22 V X (R
1
+ R
2
) / R
2
V
OFF
threshold = LBI threshold - 720 nA X R
1
DROPOUT CHARACTERISTICS
In battery powered applications, the input supply is not typically a constant value. As the battery discharges, the input
voltage will approach the output voltage. As the voltage on the input of the converter drops, the following two
characteristics can be observed:
(a
) as the battery voltage drops, output ripple will increase,
(b)
at very low battery levels
and high current loads, the output voltage may drop significantly below the regulation threshold.
In some applications, the above characteristics may not present a problem. For those applications that may be sensitive
to these characteristics, the LBO output can provide an early warning system indicating that battery failure is near. As
the battery voltage continues to drop, the turnoff feature of the TK654xx will ultimately turn the converter off (see LBI
Indicator section).
RATIO OF R1/R2
0.6 1.0 1.4 1.8
3.0 V
2.0 V
4.0 V
2.5 V
3.5 V
VOFF THRESHOLD (R1 = 243 K)
(R1 = 487 K)
(R1 = 732 K)
(R1 = 976 K)
LBI THRESHOLD
L
DESIGN CONSIDERATIONS (CONT.)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TK65429 | STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65429M | STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65429MTL | STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65430 | STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65430M | STEP-DOWN CONVERTER WITH BATTERY MONITOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TK65428MTL/428 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65429 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65429M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65429MTL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-DOWN CONVERTER WITH BATTERY MONITOR |
| TK65429MTL/429 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-DOWN CONVERTER WITH BATTERY MONITOR |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。