参数资料
型号: NCP1729SN35T1G
厂商: ON Semiconductor
文件页数: 18/22页
文件大小: 0K
描述: IC REG SWITCHD CAP INV ADJ 6TSOP
标准包装: 1
类型: 切换式电容器(充电泵),反相
输出类型: 可调式
输出数: 1
输出电压: -1.15 V ~ -5.5 V,2.3 V ~ 11 V
输入电压: 1.15 V ~ 5.5 V
频率 - 开关: 35kHz
电流 - 输出: 50mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SC-74,SOT-457
包装: 标准包装
供应商设备封装: 6-TSOP
产品目录页面: 1118 (CN2011-ZH PDF)
其它名称: NCP1729SN35T1GOSDKR
NCP1729
50
Q 2
C 1
1
6
V out
V in
+
2
OSC
5
50
Q 1
+
+
C 2
C 3
3
4
Capacitors = 220 m F
Q 1 = PZT751
Q 2 = PZT651
Figure 42. Positive Output Voltage Doubler with High Current Capability
The NCP1729 can be configured to produce a positive output voltage doubler with current capability of 500 mA. This is
accomplished with the addition of two external switch transistors and two Schottky diodes. The output voltage is approximately
equal to 2.0 V in minus the sum of the base emitter drops of both transistors and the forward voltage of both diodes. The
performance characteristics for the converter is shown below. Note that the output resistance is reduced to 1.8 W .
8.8
8.4
8.0
7.6
V in = 5.0 V
R out = 1.8 W
T A = 25 ° C
7.2
0
0.1
0.2
0.3
0.4
0.5
I out , OUTPUT CURRENT (mA)
Figure 43. Positive Doubler with Current Boosted
Load Regulation, Output Voltage vs. Output Current
http://onsemi.com
18
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NCP1729SN35T1G 制造商:ON Semiconductor 功能描述:Power Supply IC
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