- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377723 > LT338A (Linear Technology Corporation) 5A Positive Adjustable Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | LT338A |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 5A Positive Adjustable Voltage Regulator |
| 中文描述： | 5A條正，可調(diào)式電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 185K |
| 代理商： | LT338A |
5
LT138A/LT338A
LM138/LM338
TYPICAL PERFOR U
Current Limit
Current Limit
Current Limit
INPUT-OUTPUT DIFFERENTIAL (V)
0
O
8
12
40
138A/338A G10
4
0
10
20
30
16
PEAK CURRENT LIMIT
DC CURRENT LIMIT
T
CASE
= 25
°
C
PRELOAD = 0A
PRELOAD = 1A
PRELOAD = 5A
TIME (ms)
0.1
8
O
10
12
14
1
10
100
138A/338A G11
6
4
2
0
PRELOAD = 0A
PRELOAD = 5A
V
IN
= 10V
V
OUT
= 5V
T
CASE
= 25
°
C
TIME (ms)
0.1
8
O
10
12
14
1
10
100
138A/338A G12
6
4
2
0
PRELOAD CURRENT = 0
T
CASE
= 25
°
C
V
IN
– V
OUT
= 10V
V
IN
– V
OUT
= 15V
V
IN
– V
OUT
= 20V
V
IN
– V
OUT
= 30V
Line Transient Response
TIME (
μ
s)
0
0
O
D
I
C
0.5
–1.5
–1.0
–0.5
20
30
1.5
138A/338A G13
1.0
10
40
0
0.5
1.0
C
L
= 1
μ
F
C
L
= 10
μ
F
C
OUT
= 0
C
ADJ
= 0
V
OUT
= 10V
I
OUT
= 50mA
T
J
= 25
°
C
Load Transient Response
TIME (
μ
s)
0
O
D
L
2
6
–3
–2
3
0
20
40
138A/338A G14
4
1
2
–1
0
10
30
V
IN
= 15V
V
OUT
= 10V
T
= 25
°
C
PRELOAD = 100mA
C
L
= 1
μ
F
C
ADJ
= 10
μ
F
C
L
= 0
C
ADJ
= 0
APPLICATIO
S I
FOR
ATIO
U
General
The LT138A develops a 1.25V reference voltage between
the output and the adjustable terminal (see Figure 1). By
placing a resistor, R1, between these two terminals, a con-
stant current is caused to flow through R1 and down through
R2 to set the overall output voltage. Normally this current
is the specified minimum load current of 5mA or 10mA.
Because I
ADJ
is very small and constant when compared
with the current through R1, it represents a small error and
can usually be ignored. It is easily seen from the output
voltage equation, that even if the resistors were of exact
value, the accuracy of the output is limited by the accuracy
of V
REF
. Earlier adjustable regulators had a reference
W
U
U
tolerance of
±
4% which is dangerously close to the
±
5%
supply tolerance required in many logic and analog sys-
tems. Further, even 1% resistors can drift 0.01%/
°
C, add-
ing additional error to the output voltage tolerance.
Figure 1. Basic Adjustable Regulator
LT338A
V
IN
R1
138A/338A F01
V
OUT
I
ADJ
50
μ
A
ADJ
V
REF
V
OUT
V
IN
R2
V
OUT
= V
REF
R2
R1
1 +
+ I
ADJ
R2
(
)
+
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT338AK | 5A Positive Adjustable Voltage Regulator |
| LT138A | Octal D-Type Edge-Triggered Flip-Flops With 3-State Outputs 24-SOIC 0 to 70 |
| LT138AK | 5A Positive Adjustable Voltage Regulator |
| LT3433EFE | 40 POS PEEL-A-WAY® SINGLE ROW SOCKET |
| LT3433IFE | High Voltage Step-Up/Step-Down DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT338AK | 制造商:Linear Technology 功能描述:Standard Regulator Pos 1.2V to 32V 5A 3-Pin(2+Tab) TO-3 |
| LT338BC | 制造商:Datak Corporation 功能描述: 制造商:EDSYN 功能描述:Tools, Tips Soldering, Tip / Nozzle Length:0.74" |
| LT3400T | 制造商:Eaton Corporation 功能描述:TYPE LT TRIP UNIT ONLY 3P 400A 600VAC MAX |
| LT3400TA | 制造商:Eaton Corporation 功能描述:TYPE LT TRIP UNIT ONLY 3P 400A 600VAC MAX |
| LT3402EMS#PBF | 制造商:Linear Technology 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。