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参数资料
| 型号： | TC105503ECT |
| 元件分类： | 稳压器 |
| 英文描述： | 0.1 A SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | SOT-23A, 5 PIN |
| 文件页数： | 11/14页 |
| 文件大小： | 433K |
| 代理商： | TC105503ECT |
TC105
DS21349B-page 6
2002 Microchip Technology Inc.
4.0
APPLICATIONS
4.1
Circuit Examples
Figure 4-3 shows a TC105 using a PNP switching
transistor (Zetex FZT749) that has an hFE of 180 and
VCESAT of 100 mV at IC = 1A. Other high beta transis-
tors can be used, but the values of RB and CB may
need adjustment if hFE is significantly different from that
of the FZT749.
The circuit of Figure 4-4 utilizes a P-channel MOSFET
switching transistor (Silconix Si9430). This transistor is
a member of the Littlefoot family of small outline
MOSFETs.
FIGURE 4-1:
SOFT START CIRCUIT
FIGURE 4-2:
EXTERNAL TRANSISTOR CONNECTION
TC105
4
SHDN
SHDN/SS
TC105
4
VIN
CSS
0.033
F
SHDN/SS
Shutdown Not Used
RSS
470K
Shutdown Used
ON
OFF
(From System
Control Logic)
+
–
RSS
470K
CSS
0.033
F
TC105
1
VIN
VOUT
Q
L
D
CL
EXT
CB
RB
TC105
1
VIN
VOUT
P
L
D
EXT
CL
P-Channel MOSFET
PNP Bipolar Transistor
–
+
–
+
–
+
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC105503ECTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Down RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TC1055-1.8VCT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1055-1.8VCT713 | 功能描述:低压差稳压器 - LDO .1mA w/Shtdn & Error 1.8V 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 |
| TC1055-2.5VCT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1055-2.5VCT713 | 功能描述:低压差稳压器 - LDO .1mA w/Shtdn & Error 2.5V 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 |
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