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参数资料
| 型号： | MIC3232YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 4/19页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HP CONS CURR 10-MSOP |
| 标准包装： | 100 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 通用 |
| 频率： | 400kHz |
| 电源电压： | 6 V ~ 45 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 1082 (CN2011-ZH PDF) |
| 其它名称： | 576-3405-5 |
Micrel, Inc.
Absolute Maximum Ratings (1)
Supply Voltage (V IN ) .....................................................+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)
MIC3230 ....................................... 1500V HB, 100VMM
MIC3230/1/2
Operating Ratings (2)
Supply Voltage (V IN )......................................... +6V to +45V
Junction Temperature (TJ)........................ –40°C to +125°C
Junction Thermal Resistance
MSOP ( θ JA ) ...................................................130.5°C/W
EPAD TSSOP ( θ JA ).........................................36.5°C/W
MLF ? ( θ JA ).......................................................60.7°C/W
MIC3232 ........................................... 2kV HB, 100VMM
MIC3231 ....................................... 1500V HB, 150VMM
Electrical Characteristics (4)
V IN = 12V; V EN = 3.6V; L = 47μH; C = 4.7μF; T J = 25°C, Bold values indicate –40°C ≤ T J ≤ +125°C, unless noted.
Symbol
V IN
Parameter
Supply Voltage Range
Condition
Min
6
Typ
Max
45
Units
V
UVLO
I VIN
I SD
Under Voltage Lockout
Quiescent Current
Shutdown Current
V FB > 275mV (to ensure device is not
switching)
V EN = 0V
3.5
4.9
3.2
30
5.5
10
V
mA
μA
V IADJ
I ADJ
Feedback Voltage (at IADJ)
Feedback Input Current
Room temperature (3%)
–40°C ≤ T J ≤ +125°C (5%)
V FB = 250mV
242.5
237.5
250
250
1.2
257.5
262.5
3
mV
mV
μA
Line Regulation
Load Regulation
V IN = 12V to 24V
V OUT to 2 × V OUT
2
2
%
%
D MAX
Maximum Duty Cycle
MIC3230 & MIC3232
MIC3231
90
88
%
%
V EN
I EN
V PWM
f PWMD
f SW
f SW
F DITHER
V SENS
I SENSE
Enable Threshold
Enable Pin Current
PWMD Threshold
PWMD Frequency Range
Programmable Oscillator
Frequency
Fixed Frequency Option
Low EMI (MIC3231)
Current Limit Threshold Voltage
I SENSE Peak Current Out
Turn ON
Turn OFF
V EN = 3.3V
REN = 100k ?
Turn ON
Turn OFF
Note 5 (L = 47μH; C = 4.7μF)
R FREQ = 82.5k ?
R FREQ = 21k ?
R FREQ = 8.25k ?
(MIC3232YMM)
Frequency dither shift from nominal
R SENSE = 390 ?
R SENSE = 390 ?
1.5
1.5
0
360
360
0.315
1.15
1.1
17
0.75
0.7
109
400
950
400
±12
0.45
250
0.4
30
0.4
500
440
440
0.585
V
V
μA
V
V
Hz
kHz
kHz
kHz
kHz
%
V
μA
Notes:
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, 1.5k ? in series with 100pF.
4. Specification for packaged product only.
5. Guaranteed by design
March 2011
4
M9999-030311-D
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