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参数资料
| 型号： | MAX639ESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 5V/ADJ 225MA 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： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 5V，1.3 V ~ 11.5 V |
| 输入电压： | 4 V ~ 11.5 V |
| 电流 - 输出： | 225mA |
| 同步整流器： | 无 |
| 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/3.3V/3V/Adjustable, High-Efficiency,
Low I Q , Step-Down DC-DC Converters
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 9V for the MAX639, V+ = 5V for the MAX640/MAX653, I LOAD = 0mA, T A = T MIN to T MAX , typical values are at T A = +25°C,
unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V+ = 9V, T A = +25°C, MAX639/MAX640/MAX653
0.8
1.5
LX Switch On-Resistance
V+ = 6V, T A = T MIN to T MAX , MAX639
V+ = 4V, T A = T MIN to T MAX , MAX640/MAX653
2.5
2.8
?
LX Switch Leakage
VFB Bias Current
V+ = 11.5V, V LX = 0V
VFB = 2V
T A = +25°C
T A = T MIN to T MAX
0.003
4.0
1.0
30.0
15.0
μA
nA
VFB Dual-Mode Trip Point
50
mV
VFB Threshold
LBI Bias Current
LBI Threshold
MAX6_ _C
MAX6_ _E/M
V LBI = 2V
MAX6_ _C
MAX6_ _E/M
1.26
1.24
1.26
1.24
1.28
1.28
2
1.28
1.28
1.30
1.32
10
1.30
1.32
V
nA
V
LBO Sink Current
LBO Leakage Current
LBO Delay
SHDN Threshold
V LBO = 0.4V
V LBO = 11.5V
50mV overdrive
MAX639
MAX640/MAX653
0.8
0.4
0.80
2.5
1.2
0.001
25
1.15
0.1
2.00
mA
μA
μs
V
SHDN Pull-Up Current
SHDN = 0V
0.10
0.20
0.40
μA
Note 2: Output guaranteed by correlation to measurements of device parameters (i.e., switch on-resistance, on-times, off-times, and
output voltage trip points).
__________________________________________Typical Operating Characteristics
(Circuit of Figure 3, internal feedback, L = 100μH, T A = +25°C, unless otherwise noted.)
EFFICIENCY vs.
OUTPUT CURRENT
EFFICIENCY vs.
OUTPUT CURRENT
EFFICIENCY vs.
OUTPUT CURRENT
100
L = 100 μ H
V + = 9V
100
L = 470 μ H
100
L = 470 μ H
V+ = 9V
90
90
90
80
80
MAX639, V+ = 6V
80
70
MAX639
MAX640
MAX653
70
MAX640, V+ = 4.3V
MAX653, V+ = 4V
70
MAX639
MAX640
MAX653
60
60
60
50
10 μ
100 μ
1m
10m
100m
1
50
10 μ
100 μ
1m
10m
100m
50
10 μ
100 μ
1m
10m
100m
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
_______________________________________________________________________________________
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX639EVKIT-DIP | 制造商:Maxim Integrated Products 功能描述:5V/ADJUSTABLE, HIGH-EFFICIENCY, LOW I Q, STEP - Bulk |
| MAX639MJA | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX63XXSUPEVKIT | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit for the MAX3762[MAX3762EVKIT ] |
| MAX6400BS22 | 制造商:Maxim Integrated Products 功能描述:UP SUPERVISORY CIRCUIT IN 4-BUMP 2X2 CHIP-SCA - Bulk |
| MAX6400BS22+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.2V 1UA 4UCSP - Rail/Tube |
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