参数资料
型号: MIC3839YMM TR
厂商: Micrel Inc
文件页数: 4/11页
文件大小: 0K
描述: IC REG CTRLR ISO PWM 10-MSOP
标准包装: 2,500
PWM 型: 电流/电压模式
输出数: 1
频率 - 最大: 1MHz
占空比: 50%
电源电压: 2 V ~ 14 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
其它名称: MIC3839YMMTR
MIC3839YMMTR-ND
MIC3838/3839
Absolute Maximum Rating (Note 1)
Supply Voltage (I DD ≤ 10mA) ...................................... +15V
Supply Current ........................................................... 20mA
OUTA/OUTB Source Current (peak) ...................... –0.5A
OUTA/OUTB Sink Current (peak) ............................ 1.0A
COMP Pin .................................................................... V DD
Analog Inputs (FB, ILIM, RAMP) ......... –0.3V to V DD +0.3V
NOT TO EXCEED 6V
Micrel
Operating Ratings (Note 2)
V DD Input Voltage (V DD ) .......................................... Note 4
Oscillator Frequency (f OSC ) ....................... 10kHz to 1MHz
Ambient Temperature (T A ) ......................... –40 ° C to +85 ° C
Package Thermal Resistance
MSOP-10 ( θ JA ) .................................................. 115 ° C/W
Junction Temperature .............................. –55 ° C to +150 ° C
Storage Temperature (T S ) ....................... –65 ° C to +150 ° C
Lead Temperature (soldering, 10 sec.) ................... +300 ° C
ESD Rating, Note 3 ...................................................... 2kV
Electrical Characteristics (Note 5)
T A = T J = –40 ° C to +85 ° C, V DD =10V, Note 10 ,1 μ F capacitor from V DD to GND, R=22k ? , C=330pF.
Parameter
Condition
Min
Typ
Max
Units
Internal Reference Section
Output voltage
Line Regulation
Load Regulation
I OUT = 0mA
MIC3838 9V ≤ V DD ≤ 12V
MIC3839 5V ≤ V DD ≤ 12V
I OUT = 1mA
2.85
3.0
2
14
3.15
10
30
V
mV
mV
Oscillator Section
Oscillator Frequency
180
200
220
kHz
Oscillator Amplitude/V DD
Note 6
0.44
0.5
0.56
V/V DD
Error Amp Section
Input Voltage
Input Bias Current
Open Loop Voltage Gain
COMP Sink Current
COMP Source Current
COMP PM Clamp Voltage
COMP = 2V
(Guaranteed by design)
FB = 2.2V, COMP = 1V
FB = 1.3V, COMP = 3V, Note 7
V FB = 0V
1.95
–1
60
0.3
–0.15
3.1
2
80
2.5
–0.5
3.6
2.05
1
4.0
V
μ A
dB
mA
mA
V
PWM Section
Maximum Duty Cycle
Minimum Duty Cycle
Measured at OUTA or OUTB
COMP = 0V
48
49
50
0
%
%
Current Sense Section
Gain
I LIM Maximum Input Signal
I LIM to Output Delay
Guaranteed by design, Note 8
Note 9
COMP = 3V, I LIM from 0mV to 600mV
1.9
0.45
2.2
0.5
70
2.5
0.55
200
V/V
V
ns
Ramp or I LIM Source Current
–200
nA
Ramp or I LIM Sink Current
Ramp = I LIM = 0.5V, RC = 5.5V Note 10
5
10
mA
I LIM Over Current Threshold
0.7
0.75
0.8
V
COMP to Ramp Offset
Ramp = I LIM = 0V
0.35
0.8
1.2
V
Output Section
OUT Low Level
OUT High Level
Rise Time
Fall Time
MIC3838/3839
I = 100mA
I = –50mA, V DD – OUT
C L = 1nF
C L = 1nF
4
0.5
0.5
25
25
1
1
60
60
V
V
ns
ns
April 2005
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