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| 型号： | MC33341PG |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR BATTERY FAST CHRG 8DIP |
| 产品变化通告： | Product Obsolescence 07/Jul/2010 |
| 标准包装： | 50 |
| 功能： | 充电管理 |
| 电池化学： | 所有电池类型 |
| 电源电压： | 2.3 V ~ 16 V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 其它名称： | MC33341PGOS |
MC33341
Pin 8 to ground. This configuration is shown for ease of
understanding and would normally be used to provide an
isolated control signal to a primary side switching regulator
controller. In non?isolated, primary or secondary side
applications, a load resistor can be placed from Pin 8 to
ground. This resistor will convert the Drive Output current
to a voltage for direct control of a regulator.
In applications where excessively high peak currents are
possible from the source or load, the load induced voltage
drop across R S could exceed 1.6 V. Depending upon the
current sensing configuration used, this will result in
forward biasing of either the internal V CC clamp diode,
Pin 6, or the device substrate, Pin 1. Under these conditions,
input series resistor R3 is required. The peak input current
should be limited to 20 mA. Excessively large values for R3
will degrade the current sensing accuracy. Figure 22 shows
a method of bounding the voltage drop across R S without
sacrificing current sensing accuracy.
Source
R S
R3
R2
Load
8
7
6
5
1.2 V
Differential Amp
Disable Logic
V CC
0.4 V
1.2 V
V CC
V CC
V CC
R1
Opto
Isolator
R
Differential Amp
R
V CC
V sen
V th
I sen
I th
V
I
Transconductance
Amp
V CC
R
R
R
R
V CC
V CC
Reference
0.2 V 0.4 V 1.2 V
Battery or
Resistive
Load
V CC
Inverting Amp
0.2 V
1
2
3
4
Comp
Source
Return
Load
The above figure shows the MC33341 configured for source high?side current sensing allowing a common ground path between Load ? and
Source Return ?. The Differential Amplifier inputs, Pins 1 and 6, are used to sense the load induced voltage drop that appears across resistor
R S . 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 a high peak level of reverse current is possible if the source inputs are shorted. The resistor value should
be chosen to limit the input current of the internal V CC clamp diode to less than 20 mA. Excessively large values for R3 will degrade the
current sensing accuracy.
R2 ) 1
S
pk S
V reg + V
th(V) R1
I reg +
V
th(I HS)
R
R3 +
I
R
0.02
– 0.6
+ 1.2 R2 ) 1
+ 0.2
S
R1
R
Figure 14. Source High?Side Current Sensing with
Internally Fixed Voltage and Current Thresholds
http://onsemi.com
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33342D | 功能描述:电池管理 18V Max NiCD/NiMH RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MC33342DG | 功能描述:电池管理 18V Max NiCD/NiMH Fast Charge RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MC33342DR2 | 功能描述:电池管理 18V Max NiCD/NiMH RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MC33342DR2G | 功能描述:电池管理 18V Max NiCD/NiMH Fast Charge RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MC33342P | 功能描述:电池管理 18V Max NiCD/NiMH RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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