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參數(shù)資料
| 型號： | MIC5021 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Replaced by PTN78060W : |
| 中文描述： | 高速高邊MOSFET驅(qū)動器 |
| 文件頁數(shù)： | 9/9頁 |
| 文件大?。?/td> | 132K |
| 代理商： | MIC5021 |
October 1998
5-177
MIC5021
Micrel
5
Remote Overcurrent Limiting Reset
In circuit breaker applications where the MIC5021 maintains
an off condition after an overcurrent condition is sensed, the
C
T
pin can be used to reset the MIC5021.
V
DD
Input
C
T
Gnd
V
BOOST
Gate
Sense
Sense
TTL Input
10k to
100k
R
SENSE
N-Channel
Power
MOSFET
+12V to +20V
MIC5021
1
2
3
4
8
7
6
5
10μF
0.01
μF
L
74HC04
(example)
2N3904
Q1
Retry (H)
Maintained (L)
Figure 11. Remote Control Circuit
Switching Q1 on pulls C
T
low which keeps the MIC5021
GATE
output off when an overcurrent is sensed. Switching Q1 off
causes C
T
to appear open. The MIC5021 retries in about
20
μ
s and continues to retry until the overcurrent condition is
removed.
For demonstration purposes, a 680
load resistor and 3
sense resistor will produce an overcurrent condition when the
load’s supply (V+) is approximately 12V or greater.
Low-Temperature Operation
As the temperature of the MIC5021AJB (extended tempera-
ture range version—no longer available) approaches –55
°
C,
the driver’s off-state, gate-output offset from ground in-
creases. If the operating environment of the MIC5021AJB
includes low temperatures (–40
°
C to –55
°
C), add an external
2.2M
resistor as shown in Figures 12a or 12b. This assures
that the driver’s gate-to-source voltage is far below the
external MOSFET’s gate threshold voltage, forcing the
MOSFET fully off.
V
DD
Input
C
T
Gnd
V
BOOST
Gate
Sense
Sense
TTL Input
R
SENSE
+12V to +36V
MIC5021AJB
1
2
3
4
8
7
6
5
10μF
2.7
nF
L
2.2M
add resistor for
–40
°
C to –55
°
C
operation
Figure 12a. Gate-to-Source Pull Down
The gate-to-source configuration (refer to Figure 12a) is
appropriate for resistive and inductive loads. This also
causes the smallest decrease in gate output voltage.
V
DD
Input
C
T
Gnd
V
BOOST
Gate
Sense
Sense
TTL Input
R
SENSE
+12V to +36V
MIC5021AJB
1
2
3
4
8
7
6
5
10μF
2.7
L
2.2M
add resistor for
–40
°
C to –55
°
C
operation
Figure 12b. Gate-to-Ground Pull Down
The gate-to-ground configuration (refer to Figure 12b) is
appropriate for resistive, inductive, or capacitive loads. This
configuration will decrease the gate output voltage slightly
more than the circuit shown in Figure 12a.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC5021BM | Replaced by PTN78060W : |
| MIC5021BN | Replaced by PTN78060W : |
| MIC5031 | High-Speed High-Side MOSFET Driver(高速高邊MOS場效應(yīng)管驅(qū)動器) |
| MIC5031BM | High-Speed High-Side MOSFET Driver |
| MIC50398 | Replaced by PTN78060W,PTN78060H : |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC5021_05 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:High-Speed High-Side MOSFET Driver |
| MIC5021BM | 功能描述:IC DRIVER MOSFET HISIDE HS 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標準包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| MIC5021BM TR | 功能描述:IC DRIVER MOSFET HISIDE HS 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標準包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| MIC5021BN | 功能描述:IC DRIVER MOSFET HI SIDE HS 8DIP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標準包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| MIC5021YM | 功能描述:功率驅(qū)動器IC High Speed High Side MOSFET Driver - Lead Free RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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