参数资料
型号: MAX1962
厂商: Maxim Integrated Products, Inc.
英文描述: 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining
中文描述: 2.35V至5.5V、0.5%精度、1MHz PWM降压型控制器,带有电压裕量控制
文件页数: 7/29页
文件大小: 455K
代理商: MAX1962
M
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
_______________________________________________________________________________________
7
FREQUENCY vs. TEMPERATURE
M
TEMPERATURE (
°
C)
F
60
35
10
-15
100
200
300
400
500
600
700
800
900
1000
1100
0
-40
85
FSET/SYNC = V
CC
FSET/SYNC = GND
CHARGE-PUMP OUTPUT VOLTAGE
vs. CHARGE-PUMP LOAD CURRENT, 1MHz
M
CHARGE-PUMP LOAD CURRENT (mA)
C
150
100
50
4.6
4.7
4.8
V
IN
= 3.3V
V
IN
= 2.5V
4.9
5.0
5.1
5.2
4.5
0
200
C1 = 0.47
μ
F
C6 = 2.2
μ
F
CHARGE-PUMP OUTPUT VOLTAGE
vs. CHARGE-PUMP LOAD CURRENT, 500kHz
5.2
M
CHARGE-PUMP LOAD CURRENT (mA)
C
150
100
50
4.6
4.7
4.8
V
IN
= 3.3V
V
IN
= 2.5V
4.9
5.0
5.1
4.5
0
200
C1 = 1
μ
F
C6 = 4.7
μ
F
TRIPLER CHARGE-PUMP OUTPUT VOLTAGE
vs. CHARGE-PUMP LOAD CURRENT, 1MHz
5.2
M
CHARGE-PUMP LOAD CURRENT (mA)
C
30
20
10
4.6
4.7
4.8
4.9
5.0
5.1
4.5
0
40
50
V
IN
= 2.5V
CIRCUIT OF FIGURE 12
C10, C11, C12 = 0.47
μ
F
C6 = 2.2
μ
F
TRIPLER CHARGE-PUMP OUTPUT VOLTAGE
vs. CHARGE-PUMP LOAD CURRENT, 500kHz
5.2
M
CHARGE-PUMP LOAD CURRENT (mA)
C
30
20
10
4.6
4.7
4.8
4.9
5.0
5.1
4.5
0
40
50
V
IN
= 2.5V
C10, C11, C12 = 1
μ
F
C6 = 4.7
μ
F
CIRCUIT OF FIGURE 12
MAX1960/MAX1961
CURRENT-LIMIT THRESHOLD
VOLTAGE vs. TEMPERATURE
M
TEMPERATURE (
°
C)
C
60
35
10
-15
100
50
150
200
250
300
350
0
-40
85
R
ILIM
= 390k
ILIM = V
DD
MAX1962
CURRENT-LIMIT THRESHOLD
VOLTAGE vs. TEMPERATURE
M
TEMPERATURE (
°
C)
C
60
35
10
-15
47.5
48.0
48.5
49.0
49.5
50.0
50.5
51.0
51.5
52.0
47.0
-40
85
Typical Operating Characteristics (continued)
(Circuit of Figure 9, T
A
= +25
°
C, unless otherwise noted.)
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