参数资料
型号: MAX1556ETB/V+T
厂商: Maxim Integrated Products
文件页数: 5/12页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 1.2A 10TDFN
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: 可调式
输出数: 1
输出电压: 0.75 V ~ 5.5 V
输入电压: 2.6 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 1MHz
电流 - 输出: 1.2A
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: 10-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-TDFN-EP(3x3)
16μA I Q , 1.2A PWM DC-DC
Step-Down Converters
Typical Operating Characteristics (continued)
(V IN = V INP = 3.6V, D1 = D2 = SHDN = IN, Circuits of Figures 2 and 3, T A = +25°C, unless otherwise noted.)
EXTERNAL FEEDBACK
LIGHT-LOAD SWITCHING WAVEFORMS
MAX1556/7 toc10
SWITCHING WAVEFORMS
MAX1556/7 toc10b
SOFT-START/SHUTDOWN WAVEFORMS
MAX1556/7 toc11
5V/div
V OUT
20mV/div
AC-COUPLED
V SHDN
0
V LX
2V/div
0
V LX
2V/div
0
V OUT
I LX
C SS = 470pF
R LOAD = 4 ?
1V/div
0
500mA/div
0
I LX
200mA/div
0
I LX
V IN = 5V, V OUT = 3.3V, I OUT = 500mA
200mA/div
0
I IN
500mA/div
0
4 μ s/div
2 μ s/div
100 μ s/div
10
SOFT-START RAMP TIME vs. C SS
V OUT
LOAD TRANSIENT
MAX1556/7 toc13
50mV/div
AC-COUPLED
1
500mA/div
I OUT
I OUTMIN = 20mA
0
0.1
0
500
1000
1500
2000
2500
20 μ s/div
C SS (pF)
LOAD TRANSIENT
LINE TRANSIENT
BODE PLOT
MAX1556/7 toc14
MAX1556/7 toc15
4V
40
30
MAX1556/7 toc16
240
210
V OUT
50mV/div
AC-COUPLED
V IN
3.5V
20
10
180
150
0
120
10mV/div
-10
90
500mA/div
0
V OUT
AC-COUPLED
200mA/div
-20
-30
-40
0dB
PHASE MARGIN = 53°
60
30
0
I OUT
I OUTMIN = 180mA
20 μ s/div
I LX
40 μ s/div
0
-50
-60
0.1
C OUT = 22μF, R LOAD = 4?
1 10
100
-30
-60
1000
FREQUENCY (kHz)
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