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參數(shù)資料
| 型號： | TK114XX |
| 廠商： | TOKO Inc. |
| 英文描述： | VOLTAGE REGULATOR WITH ON/OFF SWITCH |
| 中文描述： | 調(diào)壓器ON / OFF開關(guān) |
| 文件頁數(shù)： | 22/24頁 |
| 文件大小： | 225K |
| 代理商： | TK114XX |
TK114xx
11-20-94
Page 22
January, 1995 TOKO, Inc.
Handling Molded Resin Packages
All plastic molded packages absorb some moisture from
the air. If moisture absorption occurs prior to soldering the
device into the printed circuit board, increased separation
of the lead from the plastic molding may occur, degrading
the moisture barrier characteristics of the device.
This property of plastic molding compounds should not be
overlooked, particularly in the case of very small packages,
where the plastic is very thin.
Application Hints
Maximize copper foil area connecting to all IC pins for
optimum performance. Place input and output bypass
capacitors close to the GND pin. For best transient behav-
ior and lowest output impedance, use as large a capacitor
value as possible. The temperature coefficient of the ca-
pacitance and Equivalent Series Resistance (ESR) should
be taken into account. These parameters can influence
power supply noise and ripple rejection. In extreme cases,
oscillation may occur. In order to maintain stability, the
output bypass capacitor value should be minimum 2.2
μ
F
for a Tantalum electrolytic or 4.7
μ
F for an Aluminum
electrolytic.
In order to preserve the original moisture barrier properties
of the package, devices are stored and shipped in moisture
proof bags, filled with dry air. The bags should not be
opened or damaged prior to the actual use of the devices.
If this is unavoidable, the devices should be stored in a low
relative humidity environment (40 to 65%) or in an enclosed
environment with desiccant.
PRINTED CIRCUIT BOARD LAYOUT
Note: Parallel connection of control pins is allowed if all devices use identical input voltage.
CONTROL FUNCTION UTILIZED
CONTROL FUNCTION NOT UTILIZED
TA01
V
IN
S
S
S
V
O
1 F
m
4.7m
R = 100K
PULL-UP RESISTOR
Rmax/N Devices
W
S
S
+
+
S
(See Note)
(Optional)
To other TK114xx Devices
ON/OFF
Control
1
2
3
4
5
6
TYPICAL APPLICATIONS
S
S
S
S
OUT
10 F
m
100K
IN
TC02
TK114xx
+
0.95 mm
KT114xx PCBL01
+
+
GND
SCALE: 10:1
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