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參數(shù)資料
| 型號： | TC3684EUART |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 170 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 960K |
| 代理商： | TC3684EUART |
TC3682/3/4-1 8/14/00
TC3682
TC3683
TC3684
2001 Microchip Technology Inc.
DS21556A
Inverting Charge Pump Voltage Doublers with Active Low Shutdown
GENERAL DESCRIPTION
TYPICAL OPERATING CIRCUIT
PIN CONFIGURATION
ORDERING INFORMATION
Part No.
Package
Osc Freq (kHz) Temp. Range
TC3682EUA
8-Pin MSOP
12
– 40
°C to +85°C
TC3683EUA
8-Pin MSOP
35
– 40
°C to +85°C
TC3684EUA
8-Pin MSOP
125
– 40
°C to +85°C
1
2
3
4
5
6
7
8
C1-
C1+
C2+
C2-
TC3682
TC3683
TC3684
VIN
VOUT
SHDN
GND
8-Pin MSOP
The TC3682, TC3683 and TC3684 are CMOS charge
pump converters that provide an inverted doubled output
from a single positive supply. An on-board oscillator pro-
vides the clock and only three
external capacitors are
required for full circuit implementation. Switching frequen-
cies are 12kHz for the TC3682, 35kHz for the TC3683, and
125kHz for the TC3684. When the SHDN pin is held at a
logic low, the device goes into a very low power mode of
operation consuming less than 1
A(typ.) of supply current.
Low output source impedance (typically 120
), pro-
vides output current up to 10mA. The TC3682, TC3683 and
TC3684 feature a 1.8V to 5.5V operating voltage range and
high efficiency, which make them an ideal choice for a wide
variety of applications requiring a negative doubled voltage
derived from a single positive supply (for example: genera-
tion of -7.2V from a +3.6V lithium cell or –10V generated
from a +5V logic supply).
The minimum external parts count, small physical size,
and shutdown mode make this family of products useful for
a wide variety of negative bias power supply applications.
FEATURES
s Small 8-Pin MSOP Package
s Operation from 1.8V to 5.5V
s 120 Ohms (typ.) Output Resistance
s 99% Voltage Conversion Efficiency
s Only 3 External Capacitors Required
s Power-Saving Shutdown Mode
s Low Active Supply Current
......................... 95
A (typ.) for TC3682
..........................225
A (typ.) for TC3683
..........................700
A (typ.) for TC3684
s Fully Compatible with 1.8V Logic Systems
TYPICAL APPLICATIONS
s LCD Panel Bias
s Cellular Phones PA Bias
s Pagers
s PDAs, Portable Data Loggers
s Battery Powered Devices
C1+
C2+
VIN
C1–
C2
C2–
C1
TC3682
VOUT
+
– COUT
INPUT
GND
Notes:
1) C1 must have a voltage rating greater
than or equal to VIN
2) C2 and COUT must have a voltage rating greater
than or equal to 2VIN
VOUT = -(2xV )
IN
TC3683
TC3684
SHDN
ON
OFF
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
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| TC368ARS | 制造商:THOMAS & BETTS 功能描述:TY-GRIP MTG BASE ADHESIVE |
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