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TC1121EUA Datasheet

  • TC1121EUA

  • 100mA Charge Pump Voltage Converter with Shutdown

  • 14頁

  • MICROCHIP   MICROCHIP

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M
Features
TC1121
Package Type
8-Pin PDIP
FC
CAP
+
1
2
8 V+
100mA Charge Pump Voltage Converter with Shutdown
鈥?Optional High-Frequency Operation Allows Use of
Small Capacitors
鈥?Low Operating Current (FC = GND)
- 50碌A(chǔ)
鈥?High Output Current (100mA)
鈥?Converts a 2.4V to 5.5V Input Voltage to a
Corresponding Negative Output Voltage
(Inverter Mode)
鈥?Uses Only 2 Capacitors; No Inductors Required
鈥?Selectable Oscillator Frequency
- 10kHz to 200kHz
鈥?Power-Saving Shutdown Input
鈥?Available in 8-Pin MSOP, 8-Pin PDIP and 8-Pin
Small Outline (SOIC) Packages
TC1121CPA
7 OSC
GND 3
TC1121EPA
6 SHDN
4
5 V
OUT
CAP
鈥?/div>
8-Pin SOIC
8-Pin MSOP
FC
CAP
+
GND
CAP
鈥?/div>
1
8 V+
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Laptop Computers
Medical Instruments
Disk Drives
碌P-Based
Controllers
Process Instrumentation
2
TC1121EOA
7 OSC
3
TC1121CUA
6 SHDN
TC1121COA
TC1121EUA
4
5 V
OUT
General Description
The TC1121 is a charge pump converter with 100mA
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 10kHz (at V
+
= 5V) when the frequency control input
(FC) is connected to ground. The oscillator frequency
increases to 200kHz when FC is connected to V
+
,
allowing the use of smaller capacitors. Operation at
sub-10kHz 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 10kHz is
50碌A(chǔ), and falls to less than 1碌A(chǔ) 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.
Device Selection Table
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擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
錚?/div>
2002 Microchip Technology Inc.
DS21358B-page 1

TC1121EUA 產(chǎn)品屬性

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 切換式電容器（充電泵），反相

  • 可調(diào)式

  • 1

  • -2.4 V ~ -5.5 V

  • 2.4 V ~ 5.5 V

  • -

  • 10kHz ~ 200kHz

  • 100mA

  • 無

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 管件

  • 8-MSOP

  • 158-1064158-1064-ND

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