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參數(shù)資料
| 型號： | SS26BBA |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 3/4頁 |
| 文件大小： | 260K |
| 代理商： | SS26BBA |
SUPERSIP26 11/99 REV C
Page 3
Thermal Design Guide
Locate your operating current, read the junction temp
rise from the graph and add to your maximum ambient.
135
°
C is the maximum allowable operating junction tem-
perature. Test conditions: Device soldered into 4
”
x 4
”
PCB, 2 sided with power and ground planes for heat con-
duction. Due to the difficulty in predicting the thermal
effects of airflow velocity and direction, and thermal con-
duction through ground planes it is important that the SS26
SuperSIP
TM
be evaluated thermally in each application.
For high ambient temperature/high current application
please request our Application Note 35-118-01,
“
Accurate
Measurements of SS26 SuperSIP
TM
Junction Tempera-
ture
”
, for further assistance.
Programming
To program the SS26 SuperSIP
TM
for V
out
<3.3, connect
resistor across pins 8 (TRIM) and 1(V
o
). For V
out
>3.3, re-
sistor is connected across pins 8 and 4 (Gnd).
T
j
Rise vs. I
o
(Junction Temp Rise vs. Output Current)
E
OUTPUT CURRENT AMPS
V
o
=3.3V, C
out
-O
μ
f, V
i
=5V, C
in
=100
μ
f
Efficiency
100
95
90
85
80
75
0.5 1.5 2.5 3.5 4.5 5.5
T
OUTPUT CURRENT - AMPS
70
60
50
40
30
20
10
0
0
1
1
2
2
3
3
4
4
5
5
6
STILL
AIR
100LFM
300LFM
3.3V 25C
2.1V 25C
Table 2
V
out
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Resistor Value
576
1.21k
1.96k
2.8k
3.83k
4.99k
6.49k
8.25k
10.7k
13.7k
V
out
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Resistor Value
18.2k
24.3k
34.8k
54.9k
110.0k
OPEN
66.5k
29.4k
18.2k
Transient Response
Operating conditions are as follows: Vin=5V Vo=3.3V, Load
change from Io=0% to Io=100%, TA=25
°
C, Cin=0F Co=
μ
F
Operating conditions are as follows: Vin=5V, Vo=3.3V, Load
change from Io=100% to Io=0%, TA=25
°
C, Cin=0F, Co=
μ
F.
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