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MIC38HC44YM 参数 Datasheet PDF下载

MIC38HC44YM图片预览
型号: MIC38HC44YM
PDF下载: 下载PDF文件 查看货源
内容描述: BiCMOS工艺1A电流模式PWM控制器 [BiCMOS 1A Current-Mode PWM Controllers]
分类和应用: 开关光电二极管信息通信管理控制器
文件页数/大小: 8 页 / 81 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC38HC42/3/4/5  
Micrel, Inc.  
Parameter  
Test Conditions  
Min  
Typ  
Max  
Units  
Current Sense  
Gain  
Notes 2, 3  
2.85  
0.9  
3.0  
1
3.15  
1.1  
V/V  
V
MaximumThreshold  
PSRR  
VCOMP = 5V, Note 2  
12 VDD 18V, Note 2  
70  
dB  
µA  
ns  
Input Bias Current  
Delay to Output  
Output  
–0.1  
120  
–2  
250  
RDS(ON) ‘HC’ High  
RDS(ON) ‘HC’ Low  
ISOURCE = 200mA  
ISINK = 200mA  
10  
5.5  
Rise Time  
TA = 25°C, CL = 1nF  
TA = 25°C, CL = 1nF  
20  
15  
50  
40  
ns  
ns  
Fall Time  
Undervoltage Lockout  
Start Threshold  
MIC38HC42/4  
MIC38HC43/5  
MIC38HC42/4  
MIC38HC43/5  
13.5  
7.8  
8
14.5  
8.4  
9
15.5  
9.0  
10  
V
V
V
V
Minimum Operating Voltage  
7.0  
7.6  
8.2  
Pulse Width Modulator  
Maximum Duty Cycle  
MIC38HC42/3  
MIC38HC44/5  
94  
46  
96  
50  
%
%
%
Minimum Duty Cycle  
Total Standby Current  
Start-Up Current  
0
VDD = 13V, 38HC42/44  
VDD = 7.5V, 38HC43/45  
50  
200  
6.0  
µA  
Operating Supply Current  
VFB = VISNS = 0V  
4.0  
37  
mA  
V
Zener Voltage (VDD  
)
IDD = 25mA, Note 6  
30  
Note 1: These parameters, although guaranteed, are not 100% tested in production.  
Note 2: Parameter measured at trip point of latch with V = 0.  
EA  
Note 3: Gain defined as:  
VPIN1  
A =  
; 0 VTH (ISNS) 0.8V  
VTH (ISNS  
)
Note 4: Adjust V above the start threshold before setting at 15V.  
DD  
Note 5: Output frequency equals oscillator frequency for the MIC38HC42 and MIC38HC43. Output frequency for the MIC38HC44, and  
MIC38HC45 equals one half the oscillator frequency.  
Note 6: On 8-pin version, 20V is maximum input on pin 7, as this is also the supply pin for the output stage. On 14-pin version, 40V is  
maximum for pin 12 and 20V maximum for pin 11.  
April 2005  
5
M9999-042205