参数资料
型号: MIC4690YM TR
厂商: Micrel Inc
文件页数: 5/12页
文件大小: 0K
描述: IC REG BUCK ADJ 1A 8SOIC
标准包装: 2,500
系列: SuperSwitcher™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 1.235V
输入电压: 4 V ~ 34 V
PWM 型: 电压模式
频率 - 开关: 500kHz
电流 - 输出: 1A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-SOIC
其它名称: MIC4690YMTR
MIC4690YMTR-ND
MIC4690
Typical Characteristics
Micrel
1.243
1.241
1.239
1.237
1.235
1.233
1.231
Reference Voltage
vs. Temperature
Quiescent Current
vs. Temperature
8.6
8.5 V IN = 12.0V
8.4 V OUT = 5.0V
8.3 I OUT = 0
8.2
8.1
8
80
78
76
74
Efficiency vs.
Output Current
1.229
V IN = 12V
7.9
72
1.227
1.225
V OUT = 5V
I OUT = 100mA
7.8
7.7
70
V IN = 12.0V
V OUT = 5.0V
1.223
-40 -20 0 20 40 60 80 100120140
7.6
-40 -20 0 20 40 60 80 100120140
68
0
0.2 0.4 0.6 0.8 1 1.2 1.4
80
70
60
50
40
TEMPERTURE ( ° C)
Efficiency
vs. Input Voltage
600
500
400
300
TEMPERATURE ( ° C)
Frequency vs.
Temperature
300
250
200
150
OUTPUT CURRENT (A)
Frequency Foldback
vs. Temperature
I OUT = 1A
30
20 V OUT = 5V
10
200
100
V IN = 12V
V OUT = 5V
I OUT = 100mA
100
50
V IN = 12V
V OUT = 5V
I OUT = 100mA
0
0
5
10 15 20 25 30 35 40
0
-50
0 50 100
150
0
-50
0 50 100
150
5.025
INPUT VOLTAGE (V)
Load Regulation
5.06
Temperature ( ° C)
Line Regulation
3.5
Temperature ( ° C)
Shutdown Current
vs. Temperature
5.020
V IN = 12V
V OUT = 5V
5.04
3.0
V SHDN = V IN
V = 5V
OUT
= 12V
2.5
5.015
5.010
5.02
5.00
V IN = 12V
2.0
1.5
1.0
5.005
4.98
V OUT = 5V
I OUT = 500mA
0.5
5.000
0
0.2 0.4 0.6 0.8 1 1.2 1.4
4.96
0
5
10 15 20 25 30 35 40
0
-40 -20 0 20 40 60 80 100120140
April 2005
OUTPUT CURRENT (A)
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
-40
INPUT VOLTAGE (V)
Shutdown Hysteresis
vs. Temperature
OFF
ON
V IN = 12.0V
V OUT = 5.0V
I OUT = 100mA
0 40 80 120 160
TEMPERATURE ( ° C)
5
TEMPERATURE ( ° C)
MIC4690
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