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參數資料
| 型號： | TC1221 |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| 中文描述： | 高頻開關電容電壓轉換器與關機采用SOT封裝 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 462K |
| 代理商： | TC1221 |
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
μ
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
μ
A (TC1221) and 1800
μ
A (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
TC1222ECH 6-Pin SOT-23A
125
750
-40°C to +85°C
-40°C to +85°C
C+
C–
TC1221ECH
TC1222ECH
1
2
3
5
4
V
IN
SHDN
GND
6-Pin SOT-23A
NOTE:
6-Pin SOT-23A is equivalent to the EIAJ SC-74
OUT
6
TC1221
TC1222
V
IN
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
相關PDF資料 |
PDF描述 |
|---|---|
| TC1221ECH | High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| TC1222 | High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| TC1222ECH | High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| TC1262 | 500mA Fixed Output CMOS LDO |
| TC1682 | Inverting Charge Pump Voltage Doublers with Active High Shutdown |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TC1221ECH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| TC1221ECHTR | 功能描述:電荷泵 Hi Freq Switched CAP RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TC1222 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| TC1222ECH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages |
| TC1222ECHTR | 功能描述:電荷泵 Hi Freq Switched CAP RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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