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PDF TC4627 Data sheet ( Hoja de datos )
| Número de pieza | TC4627 | |
| Descripción | (TC4626 / TC4627) POWER CMOS DRIVERS | |
| Fabricantes | TelCom | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TC4627 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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1
TC4626
TC4627
POWER CMOS DRIVERS WITH VOLTAGE TRIPLER
FEATURES
s Power driver with on Board Voltage Booster
s Low IDD ......................................................... < 4 mA
s Small Package ........................................ 8-Pin PDIP
s Under-Voltage Circuitry
s Fast Rise-Fall Time .................. < 40nsec @ 1000pF
s Below-Rail Input Protection
APPLICATIONS
s Raises 5V to drive higher-Vgs (ON) MOSFETs
s Eliminates one system power supply
PIN CONFIGURATIONS
8-Pin Plastic DIP
/CerDIP
C1– 1
C1+ 2
C2 3
GND 4
TC4626
TC4627
8 VDD
7 IN
6 VBOOST
5 OUT
16-Pin SOIC (Wide)
C1– 1
NC 2
C1+ 3
NC 4
C2 5
NC 6
NC 7
GND 8
16 VDD
15 NC
14 NC
TC4626
TC4627
13 IN
12 NC
11 VBOOST
10 NC
9 OUT
GENERAL DESCRIPTION
The TC4626/4627 are single CMOS high speed drivers
with an on-board voltage boost circuit. These parts work with
an input supply voltage from 4 to 6 volts. The internal voltage
booster will produce a VBOOST potential up to 12 volts above
VIN. This VBOOST is not regulated, so its voltage is dependent
on the input VDD voltage and output drive loading require-
ments. An internal undervoltage lockout circuit keeps the
output in a low state when VBOOST drops below 7.8 volts.
Output is enabled when VBOOST is above 11.3 volts.
ORDERING INFORMATION
Part No.
TC4626COE
TC4626CPA
TC4626EOE
TC4626EPA
TC4626MJA
TC4627COE
TC4627CPA
TC4627EOE
TC4627EPA
TC4627MJA
Package
16-Pin SOIC (Wide)
8-Pin Plastic DIP
16-Pin SOIC (Wide)
8-Pin Plastic DIP
8-Pin CerDIP
16-Pin SOIC (Wide)
8-Pin Plastic DIP
16-Pin SOIC (Wide)
8-Pin Plastic DIP
8-Pin CerDIP
Temp. Range
– 55°C to +125°C
– 40°C to +85°C
– 40°C to +85°C
– 0°C to +70°C
– 0°C to +70°C
– 55°C to +125°C
– 40°C to +85°C
– 40°C to +85°C
– 0°C to +70°C
– 0°C to +70°C
2
3
4
5
FUNCTIONAL BLOCK DIAGRAM
EXT +
C1
EXT +
C2
2
C1+
1
C1-
3
C2
V = 2 x VDD
VOLTAGE
BOOSTER
VDD
8
7
IN
GND 4
CLOCK
VBOOST
NON-
INVERTING
4627
(UNREGULATED 3 x VDD)
UV LOCK
6
EXT +
C3
5 OUTPUT
INVERTING
4626
6
7
NOTE: Pin numbers correspond to 8-pin package
TELCOM SEMICONDUCTOR, INC.
8
TC4626/7-7 10/21/96
4-271
Free Datasheet http://www.Datasheet4U.com
1 page  
POWER CMOS DRIVERS WITH VOLTAGE TRIPLER
BOOSTER FUNCTION
The voltage booster is an unregulated voltage tripler
circuit. The tripler consists of three sets of internal switches
and three external capacitors. S1a and S1b charge capaci-
tor C1 to VDD potential. S2a and S2b add C1 potential to VDD
input to charge C2 to 2 x VDD. S3a and S3b add C1 potential
to C2 to charge C3 to 3 x VDD. The position of the switches
is controlled by the internal 4 phase clock.
6 3 x VDD, VBOOST
C3
3 2 x VDD
C2 S2a
6
S3a
S3b
Pin 1 & 2 Waveforms
3 x VDD
PIN 2
VOLTAGE
2 x VDD
VDD
2 x VDD
PIN 1
VOLTAGE
VDD
0
(4 To 6V)
VDD
8
2
C1
1
GND
4
S1a
S1b
S2b
ON
S1
OFF
ON
S2
OFF
ON
S3
OFF
Voltage Booster
Position of Switches
1
TC4626
TC4627
2
3
4
5
6
7
TELCOM SEMICONDUCTOR, INC.
8
4-275
Free Datasheet http://www.Datasheet4U.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet TC4627.PDF ] | |
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