參數(shù)資料
型號: LP2985IM5X-5.0
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 基準電壓源/電流源
英文描述: Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors
中文描述: 5 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5
封裝: SOT-23, 5 PIN
文件頁數(shù): 13/23頁
文件大小: 528K
代理商: LP2985IM5X-5.0
SLVS522C JULY 2004 REVISED OCTOBER 2004
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL PERFORMANCE CHARACTERISTICS
C
IN
= 1 F, C
OUT
= 4.7
F, V
IN
= V
OUT(NOM)
+1 V, T
A
= 25 C, ON/OFF Pin Is Tied to V
IN
(unless otherwise specified)
OUTPUT VOLTAGE
vs
TEMPERATURE
Figure 2
3.295
3.305
3.315
3.325
3.335
3.345
50
25
0
25
Temperature
°
C
50
75
100
125
150
O
VI = 4.3 V
VO = 3.3 V
Ci = 1
μ
F
Co = 4.7
μ
F
IO = 1 mA
Figure 3
0
50
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
25
0
25
50
75
100
125
150
DROPOUT VOLTAGE
vs
TEMPERATURE
VO = 3.3 V
Cbyp = 10 nF
D
150 mA
50 mA
10 mA
1 mA
Temperature
°
C
Figure 4
0
500
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0
500
Time ms
1000
1500
2000
S
SHORT-CIRCUIT CURRENT
vs
TIME
VI = 6 V
VO = 3.3 V
Ci = 1
μ
F
Cbyp = 0.01
μ
F
100
100
300
Time ms
500
700
Figure 5
SHORT-CIRCUIT CURRENT
vs
TIME
VI = 16 V
VO = 3.3 V
Ci = 1
μ
F
Cbyp = 0.01
μ
F
S
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
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