参数资料
型号: NCP1729SN35T1G
厂商: ON Semiconductor
文件页数: 17/22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
10 k
Q 2
R 2
C 1
R 1
1
OSC
6
+
?V out
V in
+
2
5
Q 1
+
C 2
C 3
3
4
C 1 = C 2 = 470 m F
C 3 = 220 m F
Q 1 = PZT751
Q 2 = PZT651
Figure 39. Line and Load Regulated Negative Output Voltage with High Current Capability
This converter is a combination of Figures 37 and 32. It provides a line and load regulated output of ?2.47 V at up to 300 mA
with an input voltage of 5.0 V. The output will regulate at a level of ?V ref (R 2 /R 1 + 1). The performance characteristics are
shown below. Note that the dashed line is the open loop and the solid line is the closed loop configuration for the load regulation.
?2.0
?0.1
?2.2
?2.4
?0.6
I out = 100 mA
R 1 = R 2 = 10 k W
T A = 25 ° C
?1.1
?2.6
?1.6
?2.8
?3.0
V in = 5.0 V
R out = 1.0 W
R 1 = R 2 = 10 k W
T A = 25 ° C
?2.1
?3.2
0
0.1
0.2
0.3
0.4
0.5
0.6
?2.6
2.5
3.0
3.5
4.0
4.5
5.0
5.5
I out , OUTPUT CURRENT (A)
Figure 40. Current Boosted Load Regulation,
Output Voltage vs. Output Current
http://onsemi.com
17
V in , INPUT VOLTAGE (V)
Figure 41. Current Boosted Line Regulation,
Output Voltage vs. Output Current
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