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MIC3230_1

更新时间： 2024-02-25 17:06:57
品牌 Logo 应用领域
麦瑞 - MICREL 驱动控制器
页数 文件大小 规格书
19页 667K
描述
Constant Current Boost Controller for Driving High Power LEDs

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MIC3230_1 数据手册

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Micrel, Inc.  
MIC3230/1/2  
Absolute Maximum Ratings(1)  
Operating Ratings(2)  
Supply Voltage (VIN).....................................................+48V  
Enable Pin Voltage...........................................-0.3V to +6V  
IADJ Voltage ..................................................................+6V  
Lead Temperature (soldering, sec.)........................... 260°C  
Storage Temperature (Ts)..........................-65°C to +150°C  
ESD Rating(3)  
Supply Voltage (VIN)......................................... +6V to +45V  
Junction Temperature (TJ)........................–40°C to +125°C  
Junction Thermal Resistance  
MSOP (θJA) ...................................................130.5°C/W  
EPAD TSSOP (θJA).........................................36.5°C/W  
MLF® (θJA).......................................................60.7°C/W  
MIC3230 ....................................... 1500V HB, 100VMM  
MIC3232 ........................................... 2kV HB, 100VMM  
MIC3231 ....................................... 1500V HB, 150VMM  
Electrical Characteristics(4)  
VIN = 12V; VEN = 3.6V; L = 47µH; C = 4.7µF; TJ = 25°C, Bold values indicate –40°C≤ TJ ≤ +125°C, unless noted.  
Symbol Parameter  
Condition  
Min  
6
Typ  
Max  
45  
Units  
V
VIN  
Supply Voltage Range  
UVLO  
IVIN  
Under Voltage Lockout  
Quiescent Current  
3.5  
4.9  
3.2  
5.5  
10  
V
VFB > 275mV (to ensure device is not  
switching)  
mA  
ISD  
Shutdown Current  
VEN = 0V  
30  
250  
250  
1.2  
2
µA  
mV  
mV  
µA  
%
VIADJ  
Feedback Voltage (at IADJ)  
Room temperature (3%)  
–40°C≤ TJ ≤ +125°C (5%)  
VFB = 250mV  
242.5  
257.5  
262.5  
3
237.5  
IADJ  
Feedback Input Current  
Line Regulation  
VIN = 12V to 24V  
VOUT to 2 × VOUT  
Load Regulation  
2
%
DMAX  
VEN  
Maximum Duty Cycle  
MIC3230 & MIC3232  
MIC3231  
90  
88  
%
%
Enable Threshold  
Turn ON  
Turn OFF  
1.5  
1.15  
1.1  
V
V
0.4  
IEN  
Enable Pin Current  
PWMD Threshold  
VEN = 3.3V  
REN = 100kΩ  
17  
30  
µA  
VPWM  
Turn ON  
Turn OFF  
1.5  
0
0.75  
0.7  
V
V
0.4  
fPWMD  
fSW  
PWMD Frequency Range  
Note 5 (L = 47µH; C = 4.7µF)  
500  
Hz  
Programmable Oscillator  
Frequency  
RFREQ = 82.5kΩ  
109  
400  
950  
kHz  
kHz  
kHz  
RFREQ = 21kΩ  
360  
360  
440  
440  
RFREQ = 8.25kΩ  
fSW  
Fixed Frequency Option  
Low EMI (MIC3231)  
(MIC3232YMM)  
400  
±12  
0.45  
250  
kHz  
%
FDITHER  
VSENS  
ISENSE  
Notes:  
Frequency dither shift from nominal  
RSENSE = 390Ω  
Current Limit Threshold Voltage  
ISENSE Peak Current Out  
0.315  
0.585  
V
RSENSE = 390Ω  
µA  
1. Exceeding the absolute maximum rating may damage the device.  
2. The device is not guaranteed to function outside its operating rating.  
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.  
4. Specification for packaged product only.  
5. Guaranteed by design  
M9999-113009-B  
November 2009  
4
1234567...19

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