MC33198 Datasheet, PDF (1/11 Pages) Motorola, Inc – Automotive High Side TMOS Driver

Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR
MC33198
Automotive High Side
TMOS Driver
The MC33198D is a high side TMOS driver, dedicated for automotive appli-
cations. It is used in conjunction with an external power MOSFET for high
side drive applications. The device can drive and protect a large variety of
MOSFET. The device has CMOS compatible input control, charge pump to
drive the MOSFET gate, fault detection circuitry based on programmable
Vds monitoring to detect shorted load. It also includes a programmable timer
function to eliminate undesired switch off due to in rush currents and a status
pin which reports the output status in both on and off MOSFET state.
The device uses few external components and offers an economical solution
to large current high side switch. It also has PWM capability up to 1kHz.
•Designed for Automotive High Side Driver Application
•Works with a Wide Variety of N-Channel Power MOSFETs
•PWM Capability
•On Board Charge Pump Capable of Charging 25nF in less than 1ms
with No External Components Required
•Drive Inductive Load with No External Clamp Circuitry Required
•CMOS Logic Compatible Input Control
•TMOS Over Current and Short Circuit Protection
•Fault Output to Report an Over MOSFET Current Condition
•Output Status Available when MOSFET is On or Off
•Extended Temperature Range from -40°C to 125°C
•Protected Against Automotive Transients with few External
Components
•Over Voltage and Under Voltage Shutdown
HIGH SIDE
TMOS DRIVER
SILICON MONOLITHIC
INTEGRATED CIRCUIT
PIN ASSIGNMENT
SRC ¹
DRN 2
GND 3
GATE 4
8 TIMER
7 INPUT
6 STATUS
5 ^VCC
ORDERING INFORMATION
Device
MC33198D
Temperature
Range
- 40°C to+125°C
Package
SO8
MCU
INPUT
5V
Rpu
STATUS
Block Diagram and Typical Application
VCC
Over
Volt
Detect
Bias
Supply
Ref
Charge
Pump
Under
Volt
Detect
Power
ON
100µA
+
C1
-
LOGIC
10µA
-
C2
+
Vcc
+
C3
-
10µA
80µA
15V
DRN _Rdrn
GATE
SRC ^Rsrc
VBAT
POWER
TMOS
LOAD
GND
C _timer
TIMER
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Rev 1.1