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| 型号： | TC1121EUA |
| 厂商： | Microchip Technology |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHD CAP INV ADJ 8MSOP |
| 产品变化通告： | Obsolescence 22/Feb/2011 |
| 标准包装： | 100 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -2.4 V ~ -5.5 V |
| 输入电压： | 2.4 V ~ 5.5 V |
| 频率 - 开关： | 10kHz ~ 200kHz |
| 电流 - 输出： | 100mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-MSOP |
| 其它名称： | 158-1064 158-1064-ND |
TC1121
100mA Charge Pump Voltage Converter with Shutdown
Features:
? Optional High-Frequency Operation Allows Use of
Small Capacitors
Package Type
8-Pin PDIP
? Low Operating Current (FC = GND):
- 50 μ A
? High Output Current (100 mA)
? Converts a 2.4V to 5.5V Input Voltage to a
FC
CAP +
GND
1
2
3
8 V+
TC1121CPA 7 OSC
TC1121EPA 6 SHDN
Corresponding Negative Output Voltage
(Inverter mode)
CAP –
4
5 V OUT
? Uses Only 2 Capacitors; No Inductors Required
? Selectable Oscillator Frequency:
- 10 kHz to 200 kHz
? Power-Saving Shutdown Input
8-Pin SOIC
8-Pin MSOP
? Available in 8-Pin MSOP, 8-Pin PDIP and 8-Pin
FC
1
8 V+
Small Outline (SOIC) Packages
Applications:
CAP +
GND
TC1121COA
2 TC1121EOA 7 OSC
3 TC1121CUA 6 SHDN
TC1121EUA
?
Laptop Computers
CAP –
4
5 V OUT
?
?
Medical Instruments
Disk Drives
?
?
μ P-Based Controllers
Process Instrumentation
General Description:
The TC1121 is a charge pump converter with 100 mA
Device Selection Table
output current capability. It converts a 2.4V to 5.5V
input to a corresponding negative output voltage. As
Part
Number
TC1121COA
TC1121CPA
TC1121CUA
TC1121EOA
TC1121EPA
TC1121EUA
Package
8-Pin SOIC
8-Pin PDIP
8-Pin MSOP
8-Pin SOIC
8-Pin PDIP
8-Pin MSOP
Operating
Temp.
Range
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
with all charge pump converters, the TC1121 uses no
inductors saving cost, size and EMI.
An on-board oscillator operates at a typical frequency
of 10 kHz (at V + = 5V) when the frequency control input
(FC) is connected to ground. The oscillator frequency
increases to 200 kHz when FC is connected to V + ,
allowing the use of smaller capacitors. Operation at
sub-10 kHz frequencies results in lower quiescent
NScurrent and is accomplished with the addition of an
external capacitor from OSC (pin 7) to ground. The
TC1121 also can be driven from an external clock
NSconnected OSC. Typical supply current at 10 kHz is
50 μ A, and falls to less than 1 μ A when the shutdown
input is brought low, whether the internal or an external
clock is used. The TC1121 is available in 8-pin SOIC,
MSOP and PDIP packages.
? 2006 Microchip Technology Inc.
DS21358C-page 1
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