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参数资料
| 型号： | TC1306 |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | Dual 150mA CMOS LDOWith Select Mode⑩ Operation, Shutdown and RESET Output |
| 中文描述： | 双150mA的选择模式的CMOS LDOWith⑩行动，关闭和RESET输出 |
| 文件页数： | 5/16页 |
| 文件大小： | 524K |
| 代理商： | TC1306 |
2002 Microchip Technology Inc.
DS21527B-page 5
TC1306
4.0
TYPICAL APPLICATIONS
4.1
Input and Output Capacitor
The TC1306 is stable with a wide range of capacitor
values and types. A capacitor with a minimum value of
1
μ
F from V
OUT
to Ground is required. The output
capacitor should have an effective series resistance
(ESR) of 0.1
to 10
for a 1
μ
F capacitor and 0.01
to
10
for a 10
μ
F capacitor. A 1
μ
F capacitor should be
connected from the V
IN
to GND if there is more than 10
inches of wire between the regulator and the AC filter
capacitor, or if a battery is used as the power source.
Aluminum electrolytic or tantalum capacitor types can
be used. (Since many aluminum electrolytic capacitors
freeze at approximately -30°C, solid tantalums are
recommended for applications operating below -20°C).
When operating from sources other than batteries,
supply-noise rejection and transient response can be
improved by increasing the value of the input and
output capacitors and employing passive filtering
techniques.
4.2
Shutdown Mode
Applying a logic high to each of the shutdown pins turns
on the corresponding output. Each regulator enters
shutdown mode when a logic low is applied to the
corresponding input. During shutdown mode, output
voltage falls to zero, and regulator supply current is
reduced to 0.5
μ
A (max). If shutdown mode is not
necessary, the pins should be connected to V
IN
.
4.3
Select Mode Operation
The Select Mode operation is a dual-state input that
allows the user to select V
OUT2
from two different
values. By applying a logic low to the SELECT pin,
V
OUT2
is set to supply a 2.8V output voltage. A logic
high signal at the SELECT pin sets V
OUT2
to 3.0V. This
output voltage functionality provides high design
flexibility and minimizes cost associated with inventory,
time-to-market and new device qualifications.
4.4
Turn On Response
The turn on response is defined as two separate
response categories, Wake Up Time (t
WK
) and Settling
Time (t
S
).
The TC1306 has a fast Wake Up Time (10
μ
sec typical)
when released from shutdown. See Figure 4-1 for the
Wake Up Time designated as t
WK
. The Wake Up Time
is defined as the time it takes for the output to rise to 2%
of the V
OUT
value after being released from shutdown.
The total turn on response is defined as the Settling
Time (t
S
), see Figure 4-1. Settling Time (inclusive with
t
WK)
is defined as the condition when the output is
within 2% of its fully enabled value (40
μ
sec typical)
when released from shutdown. The settling time of the
output voltage is dependent on load conditions, output
voltage and V
OUT
(RC response).
FIGURE 4-1:
WAKE-UP RESPONSE
TIME
t
S
t
WK
98%
2%
SHDN
V
IL
V
OUT
V
IH
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