參數(shù)資料
型號： MAX687
廠商： Maxim Integrated Products, Inc.
英文描述： High-Accuracy, Low-Dropout Linear Regulators(3V,用于便攜電話的,高精度線性穩(wěn)壓控制器)
中文描述： 高精度、低壓差線性穩(wěn)壓器
文件頁數(shù)： 5/12頁
文件大?。?/td> 128K
代理商： MAX687
M
High-Ac c urac y, Low-Dropout
Linear Regulators
_______________________________________________________________________________________
5
0
0.0500
0.1000
0.1500
0.2000
0.2500
0.3000
-55
-25
0
25
50
75
100
125
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
M
TEMPERATURE (°C)
S
μ
A
3.280
3.285
3.290
3.295
3.300
3.305
3.310
3.315
OUTPUT VOLTAGE
vs. TEMPERATURE
M
TEMPERATURE (°C)
O
-55
-25
0
25
50
75
100
125
I
LOAD
= 70mA
C1 = 2.2
μ
F
C2 = 20
μ
F
C3 = 10nF
LINE-TRANSIENT RESPONSE
V
OUT
3.3V
1mV/div
V
IN
3.6V
V
IN
3.4V
2ms/div
I
LOAD
= 200mA
C1 = 2.2
μ
F
C2 = 20
μ
F
C3 = 10nF
LINE-TRANSIENT RESPONSE
V
OUT
3.3V
1mV/div
V
IN
3.6V
V
IN
3.4V
2ms/div
V
IN
= 3.4V
LOAD-TRANSIENT RESPONSE
V
OUT
3.3V
10mV/div
500mA
0mA
100
μ
s/div
I
LOAD
200mA/div
V
IN
= 3.5V
LOAD-TRANSIENT RESPONSE
V
OUT
3.3V
10mV/div
500mA
0mA
100
μ
s/div
I
LOAD
200mA/div
____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuits of Figures 1 and 2, V
IN
= 5V, Q1 = FZT749, T
A
= +25°C, unless otherwise noted.)
I
LOAD
= 500mA
C1 = 2.2
μ
F
C2 = 68
μ
F
C3 = 10nF
MAX687/MAX688
POWER-UP AND EXIT FROM SHUTDOWN
V
IN
5V/div
V
OUT
1V/div
SHDN
5V/div
1ms/div
80
0
10
100
1k
10k
100k
MAX687/MAX688
RIPPLE REJECTION vs. FREQUENCY
10
20
M
FREQUENCY (Hz)
R
30
40
50
60
70
C2 = 20
μ
F
V
IN
= 4.3V Min
I
LOAD
= 20mA
V
IN
= 3.6V Min
I
LOAD
= 200mA
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