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| 型號： | TPS2103D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | VAUX POWER-DISTRIBUTION SWITCHES |
| 中文描述： | 沃克斯配電開關(guān) |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 265K |
| 代理商： | TPS2103D |
TPS2102, TPS2103
V
AUX
POWER-DISTRIBUTION SWITCHES
SLVS234A – SEPTEMBER 1999 – REVISED APRIL 2000
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 22
280
240
200
–40
–10
20
50
–
r
320
IN1-OUT ON-STATE RESISTANCE
vs
JUNCTION TEMPERATURE
360
80
110
m
VI(IN1) = 4 V
VI(IN1) = 3.3 V
VI(IN1) = 2.7 V
TJ – Junction Temperature –
°
C
Figure 23
2
1.5
1
0.5
–40
–10
20
50
IN2-OUT ON-STATE RESISTANCE
vs
JUNCTION TEMPERATURE
2.5
80
110
VI(IN2) = 4 V
VI(IN2) = 3.3 V
VI(IN2) = 2.7 V
TJ – Junction Temperature –
°
C
–
r
m
APPLICATION INFORMATION
EN
IN1
IN2
OUT
GND
3.3 V VAUX
3.3 V VCC
CardBus or System Controller
TPS2102
0.22
μ
F
0.22
μ
F
0.1
μ
F
xx
μ
F
3.3 V
Figure 24. Typical Application
power-supply considerations
A 0.22-
μ
F ceramic bypass capacitor between IN and GND, close to the device is recommended. The output
capacitor should be chosen based on the size of the load during the transition of the switch. A 220-
μ
F capacitor
is recommended for 100 mA loads. Typical output capacitors (xx
μ
F, shown in Figure 24) required for a given
load can be determined from Figure 16 which shows the output voltage droop when output is switched from IN2
to IN1. The output voltage droop is insignificant when output is switched from IN1 to IN2. Additionally, bypassing
the output with a 0.1-
μ
F ceramic capacitor improves the immunity of the device to short-circuit transients.
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