参数资料
型号: TPS2103DBVR
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封装: GREEN, PLASTIC, SOT-23, 5PIN
文件页数: 5/20页
文件大小: 456K
代理商: TPS2103DBVR
TPS2102, TPS2103
VAUX 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
IN1-OUT
On-State
Resistance
320
IN1-OUT ON-STATE RESISTANCE
vs
JUNCTION TEMPERATURE
360
80
110
r
on
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
IN1-OUT
On-State
Resistance
r
on
m
APPLICATION INFORMATION
EN
IN1
IN2
OUT
GND
3.3 V VAUX
3.3 V VCC
CardBus or System Controller
TPS2102
0.22
F
0.22
F
0.1
F
xx
F
3.3 V
Figure 24. Typical Application
power-supply considerations
A 0.22-
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-
F capacitor
is recommended for 100 mA loads. Typical output capacitors (xx
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-
F ceramic capacitor improves the immunity of the device to short-circuit transients.
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