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参数资料
| 型号： | MIC3809YMM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 5/11页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM CM 8-MSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 50% |
| 电源电压： | 2 V ~ 14 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC3809YMMTR MIC3809YMMTR-ND |
MIC3808/3809
Micrel
Parameter
Condition
Min
Typ
Max
Units
Undervoltage Lockout Section
Start Threshold
Minimum Operating Voltage
After Start
Hysteresis
MIC3808, Note 9
MIC3809
MIC3808
MIC3809
MIC3808
MIC3809
11.5
4.1
7.6
3.9
3.5
0.1
12.5
4.3
8.3
4.1
4.2
0.2
13.5
4.5
9
4.3
5.1
0.3
V
V
V
V
V
V
Soft Start Section
COMP Rise Time
FB = 1.8V, Rise from 0.5V to 3V
2.5
20
ms
Overall Section
Startup Current
Operating Supply Current
V DD < Start Threshold
FB = 0V, CS = 0V, Notes 9 and 10
130
1
260
2
μ A
mA
VDD Zener Shunt Voltage
I DD = 10mA, Note 12
13
14
15
V
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Measured at RC. Signal amplitude tracks V DD .
The COMP pin is internally clamped to 3.65V(typ). The COMP pin source current is tested at V COMP = 3.0V to avoid interfering with this clamp
voltage. The minimum source current increases as V COMP approaches V CLAMP .
Note 6.
Gain is defined by A =
? V COMP
? V CS
, 0 ≤ V CS ≤ 0.4V.
Note 7.
Note 8.
Note 9.
Parameter measured at trip point of latch with FB at 0V.
The internal current sink on the CS pin is designed to discharge an external filter capacitor. It is not intended to be a DC sink path.
For MIC3808, set V DD above the start threshold before setting at 10V.
Note 10. Does not include current in the external oscillator network.
Note 11. Maximum operating voltage is equal to the V DD [zener] shunt voltage. When operating at or near the shunt voltage, care must be taken to limit
the V DD pin current to less than the 20mA V DD maximum supply current rating.
Note 12. Start threshold and Zener Shunt threshold track one another.
April 2005
5
MIC3808/3809
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