参数资料
型号: MAX8621YETG+T
厂商: Maxim Integrated Products
文件页数: 8/18页
文件大小: 0K
描述: IC PMIC W/DC-DC SUP 24-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 手持/移动设备
电源电压: 2.6 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-TQFN-EP(4x4)
包装: 带卷 (TR)
Dual Step-Down DC-DC Power-Management ICs
for Portable Devices
Typical Operating Characteristics (continued)
(Circuit of Figure 3, V IN1 = V IN2 = V IN3 = 3.6V, PWRON = IN, V BUCK1 = 1.375V, V BUCK2 = 1.8V, V OUT1 = 2.6V, V OUT2 = 2.6V, V OUT3
= 1.8V, V OUT4 = 3.0V, SEL1 = SEL2 = open, LX1 = LX2 = Murata LQH32CN2R2M53, T A = +25°C, unless otherwise noted.)
SWITCHING FREQUENCY
10
vs. LOAD CURRENT
1 μ H
BUCK1 LIGHT-LOAD WAVEFORMS
MAX8621 toc12
2.2 μ H
V BUCK1
10mV/div
AC-COUPLED
LOAD = 50mA
4.7 μ H
1
0.1
I LX1
V LX1
200mA/div
0
5V/div
0
0
100
200
300
400
500
200ns/div
LOAD CURRENT (mA)
BUCK1 HEAVY-LOAD WAVEFORMS
MAX8621 toc13
BUCK1 LOAD-TRANSIENT RESPONSE
MAX8621 toc14
V BUCK1
10mV/div
AC-COUPLED
V BUCK1
50mV/div
AC-COUPLED
LOAD = 300mA
I LX1
200mA/div
I LX1
500mA/div
0
0
400mA LOAD
V LX1
200ns/div
5V/div
0
I BUCK1
5 μ s/div
500mA/div
0
BUCK1 OUTPUT VOLTAGE
vs. LOAD CURRENT (VOLTAGE POSITIONING)
1.44
1.42
1.40
1.38
1.36
1.34
1.32
1.30
0
100
200
300
400
500
LOAD CURRENT (mA)
8
_______________________________________________________________________________________
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