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参数资料
| 型号： | TC1222ECHTR |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 950 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | EIAJ, SC-74, SOT-23A, 6 PIN |
| 文件页数： | 1/16页 |
| 文件大小： | 462K |
| 代理商： | TC1222ECHTR |
2002 Microchip Technology Inc.
DS21367B-page 1
M TC1221/TC1222
Features
Charge Pumps in 6-Pin SOT-23A Package
96% Voltage Conversion Efficiency
Voltage Inversion and/or Doubling
Operates from +1.8V to +5.5V
Up to 25mA Output Current
Only Two External Capacitors Required
Power-Saving Shutdown Mode
Fully Compatible with 1.8V Logic Systems
Applications
LCD Panel Bias
Cellular Phones
Pagers
PDAs, Portable Data Loggers
Battery-Powered Devices
Device Selection Table
Package Type
General Description
The
TC1221/TC1222
are
CMOS
“charge-pump”
voltage converters in ultra-small 6-Pin SOT-23A
packages. They invert and/or double an input voltage
which can range from +1.8V to +5.5V. Conversion
efficiency is typically 96%. Switching frequency is
125kHz for the TC1221, 750kHz for the TC1222. When
the shutdown pin is held at a logic low, the device goes
into a very low power mode of operation, consuming
less than 1
A of supply current.
For standard voltage inverter applications, the device
requires only two external capacitors. With a few
additional components a positive doubler can also be
built. All other circuitry, including control, oscillator,
power MOSFETs are integrated on-chip. Typical supply
currents are 290
A (TC1221) and 1800A (TC1222).
All devices are available in 6-pin SOT-23A surface
mount packages.
Functional Block Diagram
Part
Number
Package
Osc.
Freq.
(kHz)
Operating
Temp.
Range
TC1221ECH 6-Pin SOT-23A
125
-40°C to +85°C
TC1222ECH 6-Pin SOT-23A
750
-40°C to +85°C
C+
C–
TC1221ECH
TC1222ECH
12
3
54
VIN
SHDN
GND
6-Pin SOT-23A
NOTE: 6-Pin SOT-23A is equivalent to the EIAJ SC-74
OUT
6
TC1221
TC1222
VIN
V–
Output
C+
C–
C1
C2
Input
GND
OUT
SHDN
ON
OFF
+
Negative Voltage Inverter
High Frequency Switched Capacitor Voltage Converters
with Shutdown in SOT Packages
相关PDF资料 |
PDF描述 |
|---|---|
| TC1222ECH | SWITCHED CAPACITOR CONVERTER, 950 kHz SWITCHING FREQ-MAX, PDSO6 |
| TC1221ECH | SWITCHED CAPACITOR CONVERTER, 169 kHz SWITCHING FREQ-MAX, PDSO6 |
| TC1232COETR | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| TC1232CPAG | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8 |
| TC1232CPA | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC12-22SRWA | 制造商:Kingbright Corporation 功能描述: |
| TC12-22SYKWA | 制造商:Kingbright Corporation 功能描述: |
| TC1223 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown |
| TC1223_13 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown |
| TC1223-2.5VCTTR | 功能描述:低压差稳压器 - LDO 50mA LDO w/Shutdown 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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