参数资料
| 型号： | ZLDO330T8TA |
| 厂商： | Diodes Inc |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .3A SOT223-8 |
| 其它图纸： | LDO SOT223-8 Pin Out |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 20V |
| 电压 - 压降（标准）： | 0.1V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小值） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-223-8 |
| 供应商设备封装： | SM8 |
| 包装： | 标准包装 |
| 产品目录页面： | 1476 (CN2011-ZH PDF) |
| 其它名称： | ZLDO330T8DKR |
ZLDO330
APPLICATIONS
2). Post Converter Regulation
A common problem with multiple output
+5V In
IC1
ZLDO330
LBF
Spg
+5V Out
switch mode converters is that only one output
can be used in the feedback control loop of the
switching regulator. Thus only one output is
SC Gnd
Vin D/C
N/C Vout
C3
100nF
C1
10pF
C2
1uF
+3.3V Out
fully regulated. All other outputs are prone to
tracking errors that occur if the load on any
output changes significantly. By ensuring
close coupling of all transformer windings and
minimising the impedance of all outputs,
these errors can be reduced but never
0V In
Figure 1
0V Out
eliminated. A simple way round this problem
is to wind the switching regulator transformer
to give a slightly higher voltage than required
and regulate down from this to the desired
1). Simple 3.3V Supply
Using a circuit such as Figure 1, the ZLDO330
can easily provide a 3.3V logic supply from an
available 5V rail where most standard
regulators could not guarantee correct
operation. Although this approach is not
particularly energy efficient, if the load taken
at 3.3V is not too large, then the added
complexity and cost of a 3.3V switching
converter may not be justifiable and so this
linear solution can be preferable. This circuit
will also give far less noise than a switching
regulator which can be important when
handling low level analogue signals or low
voltage measurements.
voltage with a linear regulator. This is
indicated in Figure 2. To keep losses low and
so maintain the advantages of a switch mode
supply, it is important that the voltage drop
across this regulator is kept as low as possible,
i.e. just high enough to compensate for the
poor output impedance of the switching
power supply but no higher. The low dropout
voltage of the ZLDO330 allows this circuit
technique to be implemented very effectively,
giving a highly stable and accurate low noise
supply.
Voltage
Feedback
D1
+ 5V Out
TR1
C4
220uF
ZLDO330
LBF Spg
Switching
Regulator
D2
SC
Vin
Gnd
D/C
C1
10pF
C5
N/C Vout
C2
1uF
+ 3.3V Out
Figure 2
220uF
4-67
0V Out
相关PDF资料 |
PDF描述 |
|---|---|
| ZLDO485T8TA | IC REG LDO 4.85V .3A SOT223-8 |
| ZLDO500T8TA | IC REG LDO 5V .3A SOT223-8 |
| ZM331643GTC | IC MONITOR 2.68V SUPPLY SOT223 |
| ZM7332G-65504-T2 | IC DIGITAL PWR CONTROLLER 64QFN |
| ZMR330FTA | IC REG LDO 3.3V 50MA SOT23 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZLDO330T8TC | 功能描述:IC REG LDO 3.3V .3A SOT-223-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| ZLDO485 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:4.85 VOLT ULTRA LOW DROPOUT REGULATOR |
| ZLDO485T8 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:4.85 VOLT ULTRA LOW DROPOUT REGULATOR |
| ZLDO485T8TA | 功能描述:低压差稳压器 - LDO 4.85V Ultra low Dropout Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| ZLDO485T8TA-CUT TAPE | 制造商:DIODES 功能描述:ZLDO485 Series 4.85 V 300 mA Ultra Low Dropout Regulator Surface Mount - SM-8 |
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