參數(shù)資料
型號(hào): MIC5021BM
廠商: MICREL INC
元件分類(lèi): 功率晶體管
英文描述: Replaced by PTN78060W :
中文描述: BUF OR INV BASED MOSFET DRIVER, PDSO8
封裝: SOIC-8
文件頁(yè)數(shù): 2/9頁(yè)
文件大?。?/td> 132K
代理商: MIC5021BM
MIC5021
Pin Configuration
Micrel
5-170
October 1998
Pin Description
Pin Number
Pin Name
Pin Function
1
V
DD
Input
Supply: +12V to +36V. Decouple with
10
μ
F capacitor.
2
TTL Compatible Input: Logic high turns the external MOSFET on. An
internal pull-down returns an open pin to logic low.
3
C
T
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.
4
Gnd
Circuit Ground
5
Sense +
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).
6
Sense –
7
Gate
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
current.
8
V
BOOST
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.
1
2
3
4
8
7
6
5
V
DD
Input
C
T
Gnd
V
BOOST
Gate
Sense
Sense
+
1
2
3
4
8
7
6
5
V
BOOST
Gate
Sense
Sense
+
V
DD
Input
C
T
Gnd
Block Diagram
Sense –
Sense +
6V Internal Regulator
C
INT
I
1
2I
1
50mV
Input
ONE-
SHOT
Gate
C
T
V
DD
6V
OFF
ON
Fault
Normal
I
2
10I
2
15V
Q1
CHARGE
PUMP
V
BOOST
Transistor: 106
DIP Package
(N)
SOIC Package
(M)
相關(guān)PDF資料
PDF描述
MIC5021BN Replaced by PTN78060W :
MIC5031 High-Speed High-Side MOSFET Driver(高速高邊MOS場(chǎng)效應(yīng)管驅(qū)動(dòng)器)
MIC5031BM High-Speed High-Side MOSFET Driver
MIC50398 Replaced by PTN78060W,PTN78060H :
MIC50398CN Replaced by PTN78060W,PTN78060H :
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