参数资料
型号: MAX8640ZEXT12+T
厂商: Maxim Integrated Products
文件页数: 3/12页
文件大小: 0K
描述: IC REG BUCK SYNC 1.2V .5A SC70-6
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: 1.2V
输入电压: 2.7 V ~ 5.5 V
频率 - 开关: 4MHz
电流 - 输出: 500mA
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: 6-TSSOP,SC-88,SOT-363
包装: 带卷 (TR)
供应商设备封装: SC-70-6
Tiny 500mA, 4MHz/2MHz Synchronous
Step-Down DC-DC Converters
Typical Operating Characteristics
(V IN = 3.6V, V OUT = 1.5V, MAX8640Z, L = Murata LQH32CN series, T A = +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
1.8V OUTPUT
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SWITCHING FREQUENCY
vs. LOAD CURRENT
100
90
MAX8640YEXT18
35
MAX8640YEXT18
10
MAX8640ZEXT15
80
30
70
60
50
25
20
MAX8640ZEXT15
1
40
30
20
10
15
10
MAX8640YEXT18
0
5
0.1
0.1
1
10 100
1000
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
0
100
200 300 400
500
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs. LOAD CURRENT
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
LIGHT-LOAD SWITCHING WAVEFORMS
1.55
1.50
(VOLTAGE POSITIONING)
MAX8640ZEXT15
V OUT
(I OUT = 1mA)
MAX8640Y/Z toc05
20mV/div
(AC-COUPLED)
1.45
V LX
1.40
2V/div
1.35
I LX
200mA/div
1.30
0
100
200 300 400
500
10 μ s/div
LOAD CURRENT (mA)
MEDIUM-LOAD SWITCHING WAVEFORMS
HEAVY-LOAD SWITCHING WAVEFORMS
V OUT
(I OUT = 40mA)
MAX8640Y/Z toc06
20mV/div
(AC-COUPLED)
V OUT
(I OUT = 300mA)
MAX8640Y/Z toc07
20mV/div
(AC-COUPLED)
2V/div
V LX
2V/div
V LX
0V
0V
200mA/div
I LX
200ns/div
200mA/div
0mA
I LX
200ns/div
0mA
_______________________________________________________________________________________
3
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MAX8640ZEXT15+T 功能描述:直流/直流开关转换器 500mA 4/2MHz Synch Step-Down DC/DC Conv 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
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