參數(shù)資料
型號: MAX750A-MAX758A
廠商: Maxim Integrated Products, Inc.
英文描述: Adjustable, Step-Down, Current-Mode PWM Regulators
中文描述: 可調(diào),降壓,電流模式PWM穩(wěn)壓器
文件頁數(shù): 3/16頁
文件大?。?/td> 206K
代理商: MAX750A-MAX758A
M
Adjustable, S tep-Down,
Current-Mode PWM Regulators
_______________________________________________________________________________________
3
Note 1:
Output voltage tolerance over temperature is ±4.5% plus the tolerances of R3 and R4 in Figure 3.
Note 2:
The standby current typically settles to 25μA (over temperature) within 2 seconds; however, to decrease test time, the part
is guaranteed at a 100μA maximum value.
PARAMETER
MAX758A
TYP
3.75
3.5
0.5
1.0
1.22
50
160
MIN
MAX
4.00
MAX750A
TYP
3.75
3.5
0.5
1.0
1.22
50
170
MIN
MAX
4.00
UNITS
1.15
1.30
130
190
7500
Undervoltage
Lockout
V
LX On Resistance
LX Leakage Current
Reference Voltage
Reference Drift
Oscillator Frequency
Compensation Pin
Impedance
μA
V
1.15
1.30
ppm/°C
kHz
7500
CONDITIONS
V+ rising
V+ falling
I
LX
= 500mA
T
A
= +25°C
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 3, V+ = 9V for the MAX750A, V+ = 12V for the MAX758A, V
OUT
= 5V, R2 = 40.20k
, R3 = 13.0k
, I
LOAD
= 0mA,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
__________________________________________Typic al Operating Charac teristic s
(Circuit of Figure 3, V
OUT
= 5V, T
A
= +25°C, unless otherwise noted.)
100
60
0
600
MAX750A
EFFICIENCY vs. OUTPUT CURRENT
70
M
OUTPUT CURRENT (mA)
E
200
400
90
80
800
1000
V+ = 5.5V
V+ = 7V
V+ = 9V
V+ = 11V
(NOTES 3, 6)
100
60
0
600
MAX758A
EFFICIENCY vs. OUTPUT CURRENT
70
M
OUTPUT CURRENT (mA)
E
200
400
90
80
800
1000
V+ = 6V
V+ = 8V
V+ = 12V
V+ = 16V
(NOTES 3, 6)
130
210
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