MIC5020BM Micrel Inc, MIC5020BM Datasheet - Page 2

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

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

MIC5020
Pin Configuration
Block Diagram
Pin Description
MIC5020
Pin Number
1
2
3
4
5
6
7
8
Sense+
Sense-
Transistor Count: 82
Input
Pin Name
6V Internal Regulator
Sense +
Sense –
50mV
Input
Fault
Gate
V
Gnd
C
C
INT
DD
T
2I
I
1
1
Pin Function
Supply: +11V to +50V. Decouple with ≥ 10µF capacitor.
TTL Compatible Input: Logic high turns the external MOSFET on. An internal
pull-down returns an open pin to logic low.
Overcurrent Fault Indicator: When the sense voltage exceeds threshold,
open collector output is open circuit for 5µs (t
t
Retry Timing Capacitor: Controls the off time (t
retry cycle. (Duty cycle adjustment.)
• Open = 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
Current Sense Comparator (–) Input: Connect to the low side of the sense
resistor (usually power ground).
Gate Drive: Drives the gate of an external power MOSFET. Also limits V
to 15V max. to prevent Gate to Source damage. Will sink and source
current.
G(OFF)
SENSE
1
2
3
4
SOIC Package
↑
↓
V
Input
Fault
C
S H O T
ONE-
. t
DD
T
sets the load overcurrent trip point.
G(OFF)
(M)
2
Sense-
Sense+
Fault
Normal
Gate
Gnd
is adjustable from C
Q1
10I
8
7
6
5
2
I
2
ON
OFF
6V
T
.
G(ON)
G(OFF)
C
Fault
V
Gate
DD
T
), then pulled low for
) of the overcurrent
Micrel, Inc.
July 2005
GS