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TC1121 데이터시트 PDF




Microchip에서 제조한 전자 부품 TC1121은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 TC1121 자료 제공

부품번호 TC1121 기능
기능 100mA Charge Pump Voltage Converter with Shutdown
제조업체 Microchip
로고 Microchip 로고


TC1121 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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TC1121 데이터시트, 핀배열, 회로
Obsolete Device
TC1121
100mA Charge Pump Voltage Converter with Shutdown
Features:
• Optional High-Frequency Operation Allows Use of
Small Capacitors
• Low Operating Current (FC = Open):
- 50 A
• High Output Current (100 mA)
• Converts a 2.4V to 5.5V Input Voltage to a
Corresponding Negative Output Voltage
(Inverter mode)
• Uses Only 2 Capacitors; No Inductors Required
• Selectable Oscillator Frequency:
- 10 kHz to 200 kHz
• Power-Saving Shutdown Input
• Available in 8-Pin MSOP, 8-Pin PDIP and 8-Pin
Small Outline (SOIC) Packages
Applications:
• Laptop Computers
• Medical Instruments
• Disk Drives
P-Based Controllers
• Process Instrumentation
Device Selection Table
Part
Number
Package
TC1121COA
TC1121CPA
TC1121CUA
TC1121EOA
TC1121EPA
TC1121EUA
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
Package Type
8-Pin PDIP
FC 1
8 V+
CAP+ 2 TC1121CPA 7 OSC
GND 3 TC1121EPA 6 SHDN
CAP4
5 VOUT
8-Pin SOIC
8-Pin MSOP
FC 1
8 V+
TC1121COA
CAP+ 2 TC1121EOA 7 OSC
GND 3 TC1121CUA 6 SHDN
TC1121EUA
CAP4
5 VOUT
General Description:
The TC1121 is a charge pump converter with 100 mA
output current capability. It converts a 2.4V to 5.5V
input to a corresponding negative output voltage. As
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 left open. 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 current 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 connected OSC. Typical
supply current at 10 kHz is 50 A, and falls to less than
1 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.
2006-2014 Microchip Technology Inc.
DS20001358D-page 1




TC1121 pdf, 반도체, 판매, 대치품
TC1121
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Pin No.
(8-Pin MSOP,
PDIP, SOIC)
1
2
3
4
5
6
7
8
Symbol
Description
FC
CAP+
GND
CAP
OUT
SHDN
OSC
V+
Frequency control for internal oscillator, FC = open, FOSC = 10 kHz typ; FC = V+, FOSC
= 200 kHz typ; FC has no effect when OSC pin is driven externally.
Charge-pump capacitor, positive terminal.
Power-supply ground input.
Charge-pump capacitor, negative terminal.
Output, negative voltage.
Shutdown.
Oscillator control input. An external capacitor can be added to slow the oscillator. Take
care to minimize stray capacitance. An external oscillator also may be connected to
overdrive OSC.
Power-supply positive voltage input.
DS20001358D-page 4
2006-2014 Microchip Technology Inc.

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TC1121 전자부품, 판매, 대치품
TC1121
3.6 Combined Positive Supply
Multiplication and Negative
Voltage Conversion
Figure 3-4 shows this dual function circuit, in which
capacitors C1 and C2 perform pump and reservoir
functions to generate negative voltage. Capacitors C3
and C4 are the respective capacitors for multiplied
positive voltage. This particular configuration leads to
higher source impedances of the generated supplies
due to the finite impedance of the common
charge-pump driver.
VI+N
8
FC VIN
2 CAP+
OSC
C1
+
TC1121
3
GND
VOUT 5
D1, D2 = 1N4148
D1
VOUT = VIN
4 CAP
6
SHDN
SHDN*
C2
+
FIGURE 3-4:
+
C3
D2
+
C4
VOUT = (2VIN) –
(VFD1) – (VFD2)
*SHDN should be tied to VIN if not used.
Combined Positive Multiplier and Negative Converter
2006-2014 Microchip Technology Inc.
DS20001358D-page 7

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