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| 型号： | MAX1921EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/11页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX1921 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 400mA |
| 输入电压： | 2 ~ 5.5 V |
| 稳压器拓扑结构： | 降压 |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX1921 |
Low-Voltage, 400mA Step-Down
DC-DC Converters in SOT23
Typical Operating Characteristics (continued)
(C IN = 2.2μF ceramic, Circuit of Figure 1, components of Table 1, unless otherwise noted.)
10,000
SWITCHING FREQUENCY vs. LOAD
(V OUT = 1.8V)
10,000
SWITCHING FREQUENCY vs. LOAD
(V OUT = 1.5V)
10,000
NO LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
V OUT = 2.5V
1000
100
1000
100
1000
100
V OUT = 3.3V
V OUT = 1.5V
10
10
V IN = 3.3
10
V IN = 3.3
1
1
1
0.1
1
10
100
1000
0.1
1
10
100
1000
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5..0
5.5
LOAD (mA)
LIGHT-LOAD SWITCHING WAVEFORM
MAX1920 toc10
V IN = 3.3V, V OUT = 1.5V,
I LOAD = 40mA
1 μ s/div
MEDIUM-LOAD
LINE-TRANSIENT RESPONSE
MAX1920 toc13
V OUT
AC-COUPLED
5mV/div
V LX
2V/div
LOAD (mA)
MEDIUM-LOAD SWITCHING WAVEFORM
MAX1920 toc11
V IN = 3.3V, V OUT = 1.5V,
I LOAD = 250mA
1 μ s/div
LIGHT-LOAD
LINE-TRANSIENT RESPONSE
MAX1920 toc14
V OUT
AC-COUPLED
5mV/div
V LX
2V/div
SUPPLY VOLTAGE (V)
SOFT-START AND SHUTDOWN RESPONSE
MAX1920 toc12
V IN = 3.3V, V OUT = 1.5V,
R LOAD = 6 ?
200 μ s/div
LOAD-TRANSIENT RESPONSE
MAX1920 toc15
V IN = 3.3V, V OUT = 1.5V,
V OUT
1V/div
I IN
100mA/div
V SHDN
5V/div
V IN
AC-COUPLED
200mV/div
V IN
AC-COUPLED
200mV/div
I LOAD = 20mA TO 320mA
V OUT
AC-COUPLED
100mV/div
I L
200mA/div
V IN = 3.8V to 4.2V,
V OUT = 1.5V, I LOAD = 250mA
4 μ s/div
V OUT
AC-COUPLED
5mV/div
V IN = 3.8V to 4.2V,
V OUT = 1.5V, I LOAD = 20mA
4 μ s/div
V OUT
AC-COUPLED
5mV/div
40 μ s/div
I LOAD
200mA/div
4
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