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參數(shù)資料
| 型號(hào)： | TC1222ECHTR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 950 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | EIAJ, SC-74, SOT-23A, 6 PIN |
| 文件頁數(shù)： | 1/16頁 |
| 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
相關(guān)PDF資料 |
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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 制造商全稱:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown |
| TC1223_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown |
| TC1223-2.5VCTTR | 功能描述:低壓差穩(wěn)壓器 - LDO 50mA LDO w/Shutdown RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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