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参数资料
| 型号： | TC125501ECTRT |
| 元件分类： | 稳压器 |
| 英文描述： | 0.4 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | EIAJ, SC-74A, SOT-23A, 5 PIN |
| 文件页数： | 1/10页 |
| 文件大小： | 84K |
| 代理商： | TC125501ECTRT |
1
TC125
TC126
TC125/6-1 8/3/99
2001 Microchip Technology Inc
DS21372A
PFM Step-Up DC/DC Regulators
FEATURES
s
Space-Saving 5-Pin SOT-23A Package
s
Guaranteed 0.9V Start-Up
s
PFM (100 KHz Max Operating Frequency)
s
40
A Maximum Supply Current (VOUT = 3V @ 30 mA)
s
0.5
A Shutdown Mode (TC125)
s
Voltage Sense Input (TC126)
s
Requires Only Three External Components
s
80 mA Maximum Output Current
TYPICAL APPLICATIONS
s
Palmtops/PDAs
s
Battery-Powered Systems
s
Cameras
s
Portable Communicators
ORDERING INFORMATION
Part #
Output
Package
Temp.
Voltage
Range
TC125301ECT
3.0V
5-Pin SOT-23A
–40
°C to 85°C
TC125331ECT
3.3V
5-Pin SOT-23A
–40
°C to 85°C
TC125501ECT
5.0V
5-Pin SOT-23A
–40
°C to 85°C
TC126301ECT
3.0V
5-Pin SOT-23A
–40
°C to 85°C
TC126331ECT
3.3V
5-Pin SOT-23A
–40
°C to 85°C
TC126501ECT
5.0V
5-Pin SOT-23A
–40
°C to 85°C
NOTE: Other output voltages are available. Output voltage Range:
2.0V to 7.0V in 0.1V increments. Please contact Microchip
Technology Inc. for details.
GENERAL DESCRIPTION
PIN CONFIGURATIONS
The TC125/6 step-up (Boost) switching regulators fur-
nish output currents to a maximum of 80 mA (VIN = 2V,
VOUT = 3V) with typical efficiencies above 80%. These
devices employ pulse frequency modulation (PFM) for mini-
mum supply current at low loads. They are ideal for battery-
operated applications powered from one or more cells.
Maximum supply current is less than 70
A at full output
load, and less than 5
A in standby (VOUT = 3V). Both
devices require only an external inductor, diode, and capaci-
tor to implement a complete DC/DC regulator.
The TC126 has separate output voltage sensing and
chip power inputs for greater application flexibility. The
TC125 combines the output voltage sensing and chip power
inputs onto a single package pin, but adds a power-saving
shutdown mode that suspends regulator operation and
reduces supply current to less than 0.5
A when the
shutdown control input (SHDN) is low.
Housed in tiny 5-Pin SOT-23A packages, the
TC125/6 occupy minimum board space, and use tiny
external components. The TC125 accepts input voltages
from 2.0V to 10.0V. The TC126 accepts input voltages from
2.2V to 10V. Both the TC125 and TC126 have a guaranteed
start-up voltage of 0.9V at light load.
TYPICAL APPLICATION
13
VDD
NC
SHDN
NC
SENSE
TC125
TC126
1
3
5
4
2
5
4
LX
GND
2
PS
1
2
3
4
5
TC125
LX
SHDN
NC
PS
GND
3V
VIN
MA735
47
F/16V
5.0V @ 80mA
SUMIDA
100
H CD54
2 x "AA"
CELL
TANTALUM
Two Cell to 5V Boost Regulator
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC125501ECTTR | 功能描述:开关变换器、稳压器与控制器 PFM Step-up DC/DC 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 |
| TC125A | 制造商:Thomas & Betts 功能描述:Fittings Connector 1.5inch Steel |
| TC125SC-1 | 制造商:Thomas & Betts 功能描述:1-1/2 EMT SET SCREW CONN,EA |
| TC125-TB | 制造商:Thomas & Betts 功能描述:CABLE TIES |
| TC126 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:PFM Step-Up DC/DC Regulators |
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