参数资料
型号: MAX1777EEI+T
厂商: Maxim Integrated
文件页数: 11/32页
文件大小: 0K
描述: IC REG QD BUCK/LINEAR 28QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
拓扑: 降压(降压)(2),线性(LDO)(2)
功能: 任何功能
输出数: 4
频率 - 开关: 200kHz ~ 500kHz
电压/电流 - 输出 1: 控制器
电压/电流 - 输出 2: 控制器
电压/电流 - 输出 3: 3.3V,100mA
带 LED 驱动器:
带监控器:
带序列发生器:
电源电压: 4.5 V ~ 24 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SSOP(0.154",3.90mm 宽)
供应商设备封装: 28-QSOP
包装: 带卷 (TR)
High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
Typical Operating Characteristics (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V CC , SHDN = V+,
R CS = 7m ? , V ILIM _ = 0.5V, T A = +25°C, unless otherwise noted.)
MAX1977/MAX1999 (TON = GND)
5V PWM-MODE
LOAD TRANSIENT RESPONSE
MAX1777 toc28
V OUT ,
MAX1777/MAX1999 (TON = V CC )
3.3V PWM-MODE
LOAD TRANSIENT RESPONSE
MAX1777 toc29
V OUT ,
MAX1977/MAX1999 (TON = GND)
3.3V PWM-MODE
LOAD TRANSIENT RESPONSE
MAX1777 toc30
V OUT ,
5V
AC-
COUPLED
3.3V
AC-
COUPLED
3.3V
AC-
COUPLED
100mV/div
100mV/div
100mV/div
4A
INDUCTOR
4A
INDUCTOR
4A
INDUCTOR
CURRENT
CURRENT
CURRENT
1A
2A/div
1A
2A/div
1A
2A/div
5V
DL5
5V
DL3
5V
DL3
0
5V/div
0
5V/div
0
5V/div
10 μ s/div
100
5V ULTRASONIC EFFICIENCY
vs. LOAD CURRENT (TON = V CC )
20 μ s/div
100
10 μ s/div
5V ULTRASONIC EFFICIENCY
vs. LOAD CURRENT (TON = GND)
90
90
V IN = 12V
80
70
60
50
40
30
20
10
0
V IN = 12V
V IN = 24V
80
70
60
50
40
30
20
10
0
V IN = 24V
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
100
LOAD CURRENT (A)
3.3V ULTRASONIC EFFICIENCY
vs. LOAD CURRENT (TON = V CC )
100
LOAD CURRENT (A)
3.3V ULTRASONIC EFFICIENCY
vs. LOAD CURRENT (TON = GND)
90
80
90
80
V IN = 7V
70
60
50
40
30
20
10
0
V IN = 7V
V IN = 12V
V IN = 24V
70
60
50
40
30
20
10
0
V IN = 24V
V IN = 12V
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
LOAD CURRENT (A)
LOAD CURRENT (A)
______________________________________________________________________________________
11
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