參數(shù)資料
型號(hào): MC33341P
廠(chǎng)商: MOTOROLA INC
元件分類(lèi): 電源管理
英文描述: POWER SUPPLY BATTERY CHARGER REGULATION CONTROL CIRCUIT
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8
封裝: PLASTIC, DIP-8
文件頁(yè)數(shù): 13/20頁(yè)
文件大?。?/td> 374K
代理商: MC33341P
MC33341
13
MOTOROLA ANALOG IC DEVICE DATA
R3
Load
R1
Battery or
Resistive
Load
Source
Return
Source
R2
RS
Comp
The above figure shows the MC33341 configured for load low–side current sensing allowing common paths for both power and
ground, between the source and load. The Noninverting input paths, Pins 1 and 4, are used to sense the load induced voltage
drop that appears across resistor RS. The internal voltage and current regulation thresholds are selected by the respective
external connections of Pins 2 and 6. Resistor R3 is required in applications where high peak levels of load current are possible
from the battery or load bypass capacitor. The resistor value should be chosen to limit the negative substratecurrent to less than
20 mA. Excessively large values for R3 will degrade the current sensing accuracy.
Vreg
Vth(V)
R2
R1
1
1.2
R2
R1
1
Ireg
Vth(I LS
)
RS
0.2
RS
R3
IpkRS
– 0.6
0.02
V
I
Load
8
7
6
5
1
2
3
4
R
R
R
R
R
VCC
VCC
VCC
VCC
VCC
VCC
0.4 V
1.2 V
R
0.2 V
VCC
0.2 V
0.4 V 1.2 V
VCC
1.2 V
VCC
Inverting Amp
Transconductance
Amp
Differential Amp
Disable Logic
Differential Amp
Opto
Isolator
Vsen
Vth
Isen
Ith
Reference
Figure 19. Load Low–Side Current Sensing with
Internally Fixed Current and Voltage Thresholds
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MC33342D 功能描述:電池管理 18V Max NiCD/NiMH RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MC33342DG 功能描述:電池管理 18V Max NiCD/NiMH Fast Charge RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MC33342DR2 功能描述:電池管理 18V Max NiCD/NiMH RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MC33342DR2G 功能描述:電池管理 18V Max NiCD/NiMH Fast Charge RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel