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参数资料
| 型号： | TC115301ECT |
| 元件分类： | 稳压器 |
| 英文描述： | 0.4 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | SOT-89, 5 PIN |
| 文件页数： | 1/14页 |
| 文件大小： | 468K |
| 代理商： | TC115301ECT |
2002 Microchip Technology Inc.
DS21361B-page 1
TC115
Features
High Efficiency at Low Output Load Currents via
PFM Mode
Assured Start-up at 0.9V
80
A (Typ) Supply Current
85% Typical Efficiency at 100mA
140mA Typical Output Current @ VIN = 2.0V
Low Power Shutdown Mode
No External Switching Transistor Needed
Space Saving SOT-89 Package
Applications
Pagers
Cellular Phones
Palmtops
1-Cell to 3-Cell Battery Powered Systems
Cameras, Video Recorders
Local +3V to +5V Supplies
Device Selection Table
*Other
output
voltages
are
available.
Please
contact
Microchip Technology for details.
Package Type
General Description
The TC115 is a high-efficiency step-up DC/DC
converter for small, low input voltage or battery
powered systems. This device has a start-up voltage of
0.9V and a typical supply current of 80
A. Phase
compensation and soft-start circuitry are included on-
chip. Unlike conventional PWM step-up converters, the
TC115
automatically
shifts
to
pulse
frequency
modulation (PFM) at low loads, resulting in reduced
supply current and improved efficiency.
The TC115 requires only an external diode, an
inductor, and a capacitor, and supports typical output
currents of 140mA. Supply current is reduced to less
than 0.5
A, max when SHDN input is brought low.
Small size, low installed cost, and low supply current
make the TC115 step-up converter ideal for use in a
wide range of battery powered systems.
Functional Block Diagram
Part
Number
Output
Voltage
(V)*
Package
Osc.
Freq.
(kHz)
Operating
Temp.
Range
TC115501ECT
5.0
SOT-89-5 100 -40°C to +85°C
TC115331ECT
3.3
SOT-89-5 100 -40°C to +85°C
TC115301ECT
3.0
SOT-89-5 100 -40°C to +85°C
5
4
TC115
1
3
2
GND
LX
NC
PS
SHDN
SOT-89-5
1.5V
C1
10
F
L1
100
H
Sumida
CD-54
1.5V to +3V, 50mA Supply
5
4
TC115
1
3
2
SHDN
PS
NC
C2
47
F
Tantalum
IN5817
D1
GND
LX
+3V
OUT
+
–
+
PFM/PWM Step-Up DC/DC Converter
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC115301EMTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Up 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 |
| TC115331ECT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:PFM/PWM Step-Up DC/DC Converter |
| TC115331EMTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Up 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 |
| TC115501ECT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:PFM/PWM Step-Up DC/DC Converter |
| TC115501EMTTR | 功能描述:开关变换器、稳压器与控制器 PFM/PWM Step-Up 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 |
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