MIC5020BM Micrel Inc, MIC5020BM Datasheet

IC DRIVER MOSF LO SIDE HS 8-SOIC

MIC5020BM

Manufacturer Part Number
MIC5020BM
Description
IC DRIVER MOSF LO SIDE HS 8-SOIC
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC5020BM

Rise Time
700ns
Mounting Type
Surface Mount
Configuration
Low-Side
Input Type
Non-Inverting
Delay Time
400ns
Number Of Configurations
1
Number Of Outputs
1
Voltage - Supply
11 V ~ 50 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Device Type
MOSFET
Driver Case Style
SOIC
No. Of Pins
8
Supply Voltage Min
11V
Peak Reflow Compatible (260 C)
No
Fall Time Tf
500ns
Supply Voltage Max
50V
Number Of Drivers
1
Driver Configuration
Non-Inverting
Driver Type
Low Side
Input Logic Level
TTL
Fall Time
1500ns
Frequency (max)
150MHz
Operating Supply Voltage (max)
50V
Operating Supply Voltage (min)
11V
Operating Supply Voltage (typ)
12V
Turn Off Delay Time
1.5ps
Turn On Delay Time (max)
800ps
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Package Type
SOIC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Peak
-
High Side Voltage - Max (bootstrap)
-
Lead Free Status / RoHS Status
Not Compliant, Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC5020BM
Manufacturer:
MIC
Quantity:
12
Part Number:
MIC5020BM
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC5020 low-side MOSFET driver is designed to operate
at frequencies greater than 100kHz (5kHz PWM for 2% to
100% duty cycle) and is an ideal choice for high-speed ap-
plications such as motor control, SMPS (switch mode power
supplies), and applications using IGBTs. The MIC5020 can
also operate as a circuit breaker with or without automatic
retry. The MIC5020’s maximum supply voltage lends itself
to control applications using up to 50V. The MIC5020 can
control MOSFETs that switch voltages greater than 50V.
A rising or falling edge on the input results in a current source
or sink pulse on the gate output. This output current pulse
can turn on or off a 2000pF MOSFET in approximately 175ns.
The MIC5020 then supplies a limited current (< 2mA), if
necessary, to maintain the output state.
An overcurrent comparator with a trip voltage of 50mV makes
the MIC5020 ideal for use with a current sensing MOSFET.
An external low value resistor may be used instead of a
sensing MOSFET for more precise overcurrent control. An
optional external capacitor connected to the C
used to control the current shutdown duty cycle from 20%
to < 1%. A duty cycle from 20% to about 75% is possible
with an optional pull-up resistor from C
collector output provides a fault indication when the sense
inputs are tripped.
The MIC5020 is available in 8-pin SOIC package.
Other members of the MIC502x series include the MIC5021
high-side driver and the MIC5022 half-bridge driver with a
cross-conduction interlock.
Typical Application
July 2005
MIC5020
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
+11V to +50V
150kHz max.
optional*
10µF
Low-Side Driver with Overcurrent Trip and Retry
T
to V
DD
T
1
2
3
4
pin may be
. An open
V
Input
Fault
C
DD
T
MIC5020
Sense-
Sense+
Gate
Gnd
1
Features
• 11V to 50V operation
• 175ns rise/fall time driving 2000pF
• TTL compatible input with internal pull-down resistor
• Overcurrent limit
• Fault output indication
• Gate to source protection
• Compatible with current sensing MOSFETs
Applications
• Lamp control
• Heater control
• Motor control
• Solenoid switching
• Switch-mode power supplies
• Circuit breaker
Ordering Information
8
7
6
5
Standard
MIC5020BM
Current-Sensing Low-Side MOSFET Driver
V+
N-Channel
Power MOSFET
R
Part Number
S E N S E
* increases time before retry
Pb-Free
MIC5020YM
R
MIC5020
S E N S E =
50mV
I
–40ºC to +85ºC
TR IP
Temperature
Range
8-pin SOIC
Package
Micrel, Inc.
MIC5020

Related parts for MIC5020BM

MIC5020BM Summary of contents

Page 1

... Gate to source protection • Compatible with current sensing MOSFETs Applications • Lamp control • Heater control • Motor control • Solenoid switching • Switch-mode power supplies • Circuit breaker pin may be Ordering Information open Standard T DD MIC5020BM V+ MIC5020 Gate Input Sense Fault Sense+ 4 ...

Page 2

MIC5020 Pin Configuration Block Diagram 6V Internal Regulator C Sense+ Sense- 50mV Input Transistor Count: 82 Pin Description Pin Number Pin Name Input 3 Fault Gnd 6 Sense + 7 Sense – 8 Gate ...

Page 3

MIC5020 Absolute Maximum Ratings Supply Voltage (V ) ................................................... +55V DD Input Voltage .................................................–0.5V to +15V Sense Differential Voltage .......................................... ±6.5V Sense + or Sense – to Gnd ...........................–0.5V to +50V Fault Voltage ............................................................... +50V Current into Fault ........................................................ 50mA ...

Page 4

MIC5020 Typical Characteristics Supply Current vs. Supply Voltage 3 3.0 2.5 2.0 1 1.0 0 (V) SUPPLY Input Current vs. Input ...

Page 5

MIC5020 Functional Description Refer to the MIC5020 block diagram. Input A signal greater than 1.4V (nominal) applied to the MIC5020 causes gate enhancement on an external MOSFET INPUT turning the external MOSFET on. An internal pull-down resistor insures that an ...

Page 6

MIC5020 Lamp Driver Application Incandescent lamps have a high inrush current (low resis- tance) when turned on. The MIC5020 can perform a “soft start” by pulsing the MOSFET (overcurrent condition) until the filament is warm enough for its current to ...

Page 7

MIC5020 Faster MOSFET Switching The MIC5020’s current can be multiplied using a pair of GATE bipolar transistors to permit faster charging and discharging of the external MOSFET’s gate. 2N3904 +11V to +50V MIC5020 1 8 10µF V Gate DD 2 ...

Page 8

... MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...

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