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參數(shù)資料
| 型號： | UCC284SDR-5EP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 固定負(fù)電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 5 V FIXED NEGATIVE LDO REGULATOR, 0.55 V DROPOUT, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 20/21頁 |
| 文件大?。?/td> | 506K |
| 代理商： | UCC284SDR-5EP |
short-circuit protection
I
OUT = 0.1 A
I
OUT = 0.2 A
I
OUT = 0.3 A
I
OUT = 0.4 A
I
OUT = 0.5 A
3
0.00
6
9
12
15
0.05
0.10
0.15
0.20
0.25
0.30
V
OUT Output Voltage V
(V
IN
V
O
U
T
)
Dropout
V
oltage
V
DROPOUT VOLTAGE
vs
OUTPUT VOLTAGE
V
OUT = 15 V
V
OUT = 12 V
V
OUT = 5 V
0.05
0.15
0.10
0.25
0.35
0.45
0.15
0.20
0.25
I
OUT Load Current A
DROPOUT VOLTAGE
vs
LOAD CURRENT
(V
IN
V
O
U
T
)
Dropout
V
oltage
V
VOUT = 3.3 V
DROPOUT VOLTAGE
vs
TEMPERATURE
(V
IN
V
O
U
T
)
Dropout
V
oltage
V
OUT = 3.3 V
V
OUT = 5 V
V
OUT = 15 V
V
OUT = 12 V
50
25
0
50
75
25
100
0.05
0.10
0
0.20
0.25
0.15
0.35
0.40
0.30
TA Free-Air Temperature _C
SLVS862A – NOVEMBER 2008 – REVISED NOVEMBER 2008 ....................................................................................................................................... www.ti.com
The UCC284 provides unique short-circuit protection circuitry that reduces power dissipation during a fault. When
an overcurrent condition is detected, the device enters a pulsed mode of operation, limiting the output to a 2.5%
duty cycle. This reduces the heat sink requirements during a fault. The operation of the UCC284 during an
overcurrent condition is shown in Figure 5.
Figure 2.
Figure 3.
Figure 4.
8
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): UCC284-EP
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