MC33988CPNA Freescale, MC33988CPNA Datasheet - Page 18

• Manufacturer Part Number: MC33988CPNA
• Manufacturer: Freescale

Specifications of MC33988CPNA

• Switch Type: High Side
• Power Switch Family: MC33988
• Power Switch On Resistance: 16mOhm
• Output Current: 30A
• Number Of Outputs: Dual
• Mounting: Surface Mount
• Supply Current: 20mA
• Package Type: Power QFN EP
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Pin Count: 16
• Lead Free Status / RoHS Status: Compliant

POWER SUPPLY
VPWR pin. Characteristics are provided from 6.0V to 20V for
the device. The VPWR pin supplies power to internal
regulator, analog, and logic circuit blocks. The VDD supply is
used for Serial Peripheral Interface (SPI) communication in
order to configure and diagnose the device. This IC
architecture provides a low quiescent current sleep mode.
Applying V
the Normal mode. The device will transit to Fail-safe mode in
case of failures on the SPI (watchdog timeout).
HIGH-SIDE SWITCH: HS[0:1]
automotive loads with high inrush current, as well as motors
and all types of resistive and inductive loads. This N-channel
MOSFET with 8mΩ RDS(ON), is self-protected and each N-
channel presents extended diagnostics in order to detect
18
33988
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
The 33988 is designed to operate from 4.0V to 28V on the
Those pins are the high side outputs controlling multiple
PWR
and V
DD
to the device will place the device in
INTERFACE
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
MCU
Figure 9. Functional Internal Block Diagram
MCU INTERFACE AND
PARALLEL CONTROL
OUTPUT CONTROL
POWER SUPPLY
SPI INTERFACE
INPUTS
load disconnections and short-circuit fault conditions. The
HS[0:1] outputs are actively clamped during a turn-off of
inductive loads.
MCU INTERFACE AND OUTPUT CONTROL
MCU through the SPI. With a dedicated SPI command, it is
possible to independently turn on and off several loads that
are PWM’d at the same frequency, and duty cycles with only
one PWM signal. An analog feedback output provides a
current proportional to each load current. The SPI is used to
configure and to read the diagnostic status (faults) of the high
side output. The reported fault conditions are: open load,
short-circuit to ground (OCLO-resistive and OCHI-severe
short-circuit), thermal shutdown, and under/over-voltage.
parallel input pins. The device is configured in default mode.
In Normal mode, the loads are controlled directly from the
In Fail-safe mode, the loads are controlled with dedicated
HIGH SIDE SWITCH
SELF-PROTECTED
HS [0:1]
Analog Integrated Circuit Device Data
Freescale Semiconductor