参数资料
型号: MAX748AEWE+T
厂商: Maxim Integrated Products
文件页数: 5/12页
文件大小: 0K
描述: IC REG BUCK 3.3V 0.5A 16SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
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: 3.3 V ~ 16 V
PWM 型: 电流模式
频率 - 开关: 180kHz
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: 16-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
供应商设备封装: 16-SOIC W
3.3V, Step-Down,
Current-Mode PWM DC-DC Converters
_________________________________Typical Operating Characteristics (continued)
(Circuit of Figure 3, T A = +25°C, V OUT = 3.3V, unless otherwise noted.)
SWITCHING WAVEFORMS,
CONTINUOUS CONDUCTION
2 μ s/div
A: SWITCH VOLTAGE (LX PIN), 5V/div, 0V TO +6V
B: INDUCTOR CURRENT, 200mA/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
V+ = 6V, IOUT = 250mA
LINE-TRANSIENT RESPONSE
6V
0V
400mA
0mA
A
B
C
A
SWITCHING WAVEFORMS,
DISCONTINUOUS CONDUCTION
2 μ s/div
A: SWITCH VOLTAGE (LX PIN), 5V/div, 0V TO +6V
B: INDUCTOR CURRENT, 100mA/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
V+ = 6V, IOUT = 75mA
LOAD-TRANSIENT RESPONSE
6V
0V
200mA
0mA
A
B
C
A
500mA
10V
5ms/div
A: VOUT, 50mV/div
B: V+, 5V/div, 7.0V TO 10.0V
IOUT = 350mA
7V
0V
B
5ms/div
A: VOUT, 50mV/div
B: IOUT, 200mA/div, 0mA TO 500mA
V+ = 6V
0mA
B
Note 2: Operation beyond the specifications listed in the Electrical Characteristics may exceed the power dissipation ratings of
the device.
Note 3: Wide temperature range circuit of Figure 5 using Sprague surface-mount capacitors.
Note 4: Standby current includes all external component leakage currents. Capacitor leakage currents dominate at TA = +85°C.
_______________________________________________________________________________________
5
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