参数资料
型号: MAX1921EUT33+T
厂商: Maxim Integrated Products
文件页数: 4/11页
文件大小: 0K
描述: IC REG BUCK SYNC 3.3V SOT23-6
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: 3.3V
输入电压: 2 V ~ 5.5 V
频率 - 开关: 1.2MHz
电流 - 输出: 400mA
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: SOT-23-6
包装: 带卷 (TR)
供应商设备封装: SOT-6
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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