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参数资料
| 型号： | NCP511SN33T1 |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .15A 5TSOP |
| 产品变化通告： | Product Discontinuation 27/Jun/2007 |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 6V |
| 电压 - 压降（标准）： | 0.09V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSOP（0.059"，1.50mm 宽）5 引线 |
| 供应商设备封装： | 5-TSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | NCP511SN33T1OS |
NCP511
APPLICATION CIRCUITS
Input
Q1
Input
R1
Q1
R
1
5
Output
Q2
R2
R3
1
5
Output
1.0 m F
2
3
4
1.0 m F
1.0 m F
2
3
4
1.0 m F
Figure 18. Current Boost Regulator
The NCP511 series can be current boosted with a PNP transist-
or. Resistor R in conjunction with V BE of the PNP determines
when the pass transistor begins conducting; this circuit is not
short circuit proof. Input/Output differential voltage minimum is
increased by V BE of the pass resistor.
Figure 19. Current Boost Regulator
with Short Circuit Limit
Short circuit current limit is essentially set by the V BE of Q2 and
R1. I SC = ((V BEQ2 ? ib * R2) / R1) + I O(max) Regulator
Input
Output
4
Enable
1.0 m F
1
2
3
5
4
1.0 m F
3
2
1
T A = 25 ? C
V in = 3.5 V
V out = 3.0 V
0
1.0 m F
1
2
5
Output
1.0 m F
3
2
No Delay
R = 1.0 M W
C = 1.0 m F
R
C
3
4
1
0
0
20
M
R = 1.0 mW
C = 0.1 m F
40 60
80
100
120
140
160
Time (ms)
Figure 20. Delayed Turn ? on
If a delayed turn ? on is needed during power up of several
voltages then the above schematic can be used. Resistor R,
and capacitor C, will delay the turn ? on of the bottom regulator.
A few values were chosen and the resulting delay can be seen
in Figure 21.
Figure 21. Delayed Turn ? on
The graph shows the delay between the enable signal and
output turn ? on for various resistor and capacitor values.
Input
R
5.6 V
Q1
1.0 m F
1
2
3
5
4
Output
1.0 m F
Figure 22. Input Voltages Greater than 6.0 V
A regulated output can be achieved with input voltages that
exceed the 6.0 V maximum rating of the NCP511 series with
the addition of a simple pre ? regulator circuit. Care must be
taken to prevent Q1 from overheating when the regulated
output (V out ) is shorted to GND.
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP511SN33T1G | 功能描述:低压差稳压器 - LDO 3.3V 150mA CMOS w/Enable 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 |
| NCP511SN33T1G | 制造商:ON Semiconductor 功能描述:Linear Voltage Regulator IC |
| NCP511SN50T1 | 功能描述:低压差稳压器 - LDO 5.0V 150mA CMOS 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 |
| NCP511SN50T1G | 功能描述:低压差稳压器 - LDO 5.0V 150mA CMOS w/Enable 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 |
| NCP512 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70-5 |
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