参数资料
型号: MAX730AESA+T
厂商: Maxim Integrated Products
文件页数: 3/16页
文件大小: 0K
描述: IC REG BUCK 5V 0.45A 8SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 5V
输入电压: 5.2 V ~ 11 V
PWM 型: 电流模式
频率 - 开关: 170kHz
电流 - 输出: 450mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-SOIC
5V, Step-Down,
Current-Mode PWM DC-DC Converters
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 3, V+ = 9V for the MAX730A, V+ = 12V for the MAX738A/MAX744A, I LOAD = 0mA, T A = T MIN to T MAX ,
unless otherwise noted.)
PARAMETER
Load Regulation
Efficiency
CONDITIONS
I LOAD = 0mA to 300mA
I LOAD = 0mA to 750mA
V+ = 9.0V, I LOAD = 300mA
V+ = 12V, I LOAD = 750mA
MAX730A
MIN TYP MAX
0.0005
92
MAX738A
MIN TYP MAX
0.0005
90
87
MAX744A
MIN TYP MAX
0.0005
90
87
UNITS
%/mA
%
V+ = 6.0V
MAX744AC/AE
1.7
3.0
1.7
3.0
1.7
1.2
3.0
2.5
to 9.0V
MAX744AM
3.0
Supply Current
(includes switch
current)
V+ = 9.0V
to 12.0V
MAX744AC/AE
MAX744AM
3.0
3.5
mA
MAX744AC
4.0
V+ = 12.0V
to 16.0V
MAX744AE
MAX744AM
4.3
4.5
Standby Current
Shutdown Input
Threshold
SHDN = 0V (Note 1)
V IH
V IL
2.0
6.0
100.0
0.25
2.0
6.0
100.0
0.25
2.0
6.0
100.0
0.25
μA
V
Shutdown Input
Leakage Current
Short-Circuit Current
1.5
1.0
1.5
1.0
1.5
1.0
μA
A
Undervoltage
Lockout
V+ rising
V+ falling
4.7
5.2
5.7
6.0
5.0
5.7
6.0
5.7
V
LX On Resistance
LX Leakage Current
I LX = 500mA
V+ = 12V, LX = 0V
0.5
1.0
0.5
1.0
0.5
1.0
?
μA
Reference Voltage
V+ = 12V, T A = +25°C
1.15 1.23
1.30
1.15 1.23
1.30
1.15 1.23
1.30
V
Reference Drift
50
50
50
ppm/°C
Oscillator Frequency
Compensation Pin
Impedance
V+ = 6.0V
to 16.0V
MAX744AC/AE
MAX744AM
130
170
7500
210
130
160
7500
190
159.0 185.0 212.5
159.0
216.5
7500
kHz
?
Note 1: 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.
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