C1鈥?/div>
NC
C1+
NC
1
2
3
4
5
6
7
8
16 V
DD
15 NC
14 NC
Device Selection Table
Part
Number
TC4626COE
TC4626CPA
TC4626EOE
TC4626EPA
TC4626MJA
TC4627COE
TC4627CPA
TC4627EOE
TC4627EPA
TC4627MJA
C2
NC
TC4626
TC4627
12 NC
11 V
BOOST
10 NC
9 OUT
13 IN
Package
16-Pin SOIC (Wide)
8-Pin PDIP
16-Pin SOIC (Wide)
8-Pin PDIP
8-Pin CERDIP
16-Pin SOIC (Wide)
8-Pin PDIP
16-Pin SOIC (Wide)
8-Pin PDIP
8-Pin CERDIP
Temp. Range
-55擄C to +125擄C
-40擄C to +85擄C
-40擄C to +85擄C
0擄C to +70擄C
0擄C to +70擄C
-55擄C to +125擄C
-40擄C to +85擄C
-40擄C to +85擄C
0擄C to +70擄C
0擄C to +70擄C
NC
GND
General Description
The TC4626/TC4627 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 V
BOOST
potential up to 12 volts above V
IN
. This V
BOOST
is not
regulated, so its voltage is dependent on the input V
DD
voltage and output drive loading requirements. An
internal undervoltage lockout circuit keeps the output in
a low state when V
BOOST
drops below 7.8 volts. Output
is enabled when V
BOOST
is above 11.3 volts.
Functional Block Diagram
EXT +
C
1
C1+
C1-
C2
2
1
3
V = 2 x V
DD
Voltage
Booster
Noninverting
TC4627
5
V
DD
8
Clock
Output
V
BOOST
(Unregulated 3 x V
DD
)
6
EXT +
C
3
UV LOCK
EXT +
C
2
In
GND
7
Inverting
TC4626
4
NOTE:
Pin numbers correspond to 8-pin package.
2002 Microchip Technology Inc.
DS21426B-page 1
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