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参数资料
| 型号： | MIC5021YN |
| 厂商： | Micrel Inc |
| 文件页数： | 2/10页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MOSFET HI SIDE HS 8DIP |
| 标准包装： | 50 |
| 配置： | 高端 |
| 输入类型： | 非反相 |
| 延迟时间： | 500ns |
| 配置数： | 1 |
| 输出数： | 1 |
| 电源电压： | 12 V ~ 36 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 1110 (CN2011-ZH PDF) |
| 其它名称： | 576-1240 |
MIC5021
Pin Con?guration
Micrel, Inc.
1
V DD
V B OOS T
8
1
V DD V B OOS T
8
2
3
4
Input
C T
Gnd
Gate
Sense-
Sense+
7
6
5
2
3
4
Input
C T
Gnd
Gate
Sense-
Sense+
7
6
5
DIP Package
(N)
SOIC Package
(M)
Block Diagram
6V Internal Regulator
I 1
C INT
2I 1
Fault
Normal
C T
V DD
Sense+
Q1
CHARGE
PUM P
V B OOS T
15V
Sense-
Input
50mV
↑ ONE-
↓ SHOT
10I 2
I 2
ON
OFF
6V
Gate
Transistor: 106
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
V DD
Input
C T
Gnd
Sense +
Sense –
Gate
V BOOST
Pin Function
Supply: +12V to +36V. Decouple with ≥ 10μF capacitor.
TTL Compatible Input: Logic high turns the external MOSFET on. An inter-
nal pull-down returns an open pin to logic low.
Retry Timing Capacitor: Controls the off time (t G(OFF) ) of the overcurrent
retry cycle. (Duty cycle adjustment.)
? Open = approx. 20% duty cycle.
? Capacitor to Ground = approx. 20% to < 1% duty cycle.
? Pull-up resistor = approx. 20% to approx. 75% duty cycle.
? Ground = maintained shutdown upon overcurrent condition.
Circuit Ground
Current Sense Comparator (+) Input: Connect to high side of sense resistor
or current sensing MOSFET sense lead. A built-in offset in conjunction with
R SENSE sets the load overcurrent trip point.
Current Sense Comparator (–) Input: Connect to the low side of the sense
resistor (usually the high side of the load).
Gate Drive: Drives the gate of an external power MOSFET. Also limits V GS
to 15V max. to prevent Gate-to-Source damage. Will sink and source cur-
rent.
Charge Pump Boost Capacitor: A bootstrap capacitor from V BOOST to the
FET source pin supplies charge to quickly enhance the Gate output during
turn-on.
MIC5021
2
July 2005
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