MIC5031 Datasheet, PDF (2/8 Pages) Micrel Semiconductor – High-Speed High-Side MOSFET Driver

MIC5031
Pin Configuration
Micrel
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
FLG 1
DLY 2
CTL 3
EN 4
GND 5
CS 6
VDD 7
CP1– 8
16 G
15 RI
14 RV
13 S
12 CB
11 CP2+
10 CP1+
9 CP2–
16-lead SOIC (M)
Pin Name
FLG
DLY
CTL
EN
GND
CS
VDD
CP1–
CP2–
CP1+
CP2+
CB
S
RV
RI
G
Pin Function
Fault Flag: (Output): Open-collector output sinks current upon overcurrent,
open-load, or overtemperature detection. 10mA maximum load.
Overcurrent Delay Time Capacitor: Optional. Capacitor to ground delays
activation of overcurrent shutdown.
Control (Input): TTL compatible on/off control input. Logic high drives the
gate output above the supply voltage. Logic low forces the gate output near
ground. Logic low also resets the overcurrent fault latch.
Enable (Input): CMOS compatible input. Logic high enables the charge
pump. Logic low disables the charge pump and draws near zero supply
current.
Ground: Power return.
Internal Supply Storage Capacitor: 10µF external capacitor to GND.
Provides additional current to internal circuitry during switching transitions.
Supply (Input): +4.5V to +30V supply.
Charge Pump Capacitor #1: Refer to CP1+.
Charge Pump Capacitor #2: Refer to CP2+.
Charge Pump Capacitor #1: External 0.01µF voltage tripler capacitor.
Charge Pump Capacitor #2: External 0.01µF voltage tripler capacitor.
Bootstrap Capacitor: 0.1µF capacitor to source for fastest rise time.
Source: Source connection to external MOSFET.
Reference Voltage Resistor: Resistor to VDD provides a reference voltage
drop. A voltage drop across the external MOSFET that is greater than the
voltage drop across the reference resistor indicates an overcurrent condition.
(Refer to applications section) Zero temperature coefficient resistor
recommended.
Reference Current Resistor: Resistor to GND sets constant current value
through RV resistor (Refer to applications section) and matches tempera-
ture compensation of RV resistor. Zero temperature coefficient resistor
recommended.
Gate (Output) : Gate connection to external MOSFET.
MIC5031
2
August 1999