參數(shù)資料
型號(hào)： TC1221ECH
廠商： Microchip Technology Inc.
元件分類： 基準(zhǔn)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(guān)電容電壓轉(zhuǎn)換器與關(guān)機(jī)采用SOT封裝
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 462K
代理商： TC1221ECH
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(guān)PDF資料
PDF描述
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
TC1682EUA Inverting Charge Pump Voltage Doublers with Active High Shutdown
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
TC12-22SRWA 制造商:Kingbright Corporation 功能描述:
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