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NXP Semiconductors Electronic Components Datasheet

MC33879 Datasheet

Configurable octal serial switch

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NXP Semiconductors
Technical Data
Configurable octal serial switch with
open load detect current disable
The 33879 device is an 8-output hardware configurable, high-side/low-side
switch with 16-bit serial input control using the serial peripheral interface (SPI).
Two of the outputs may be controlled directly via a microcontroller for pulse-
width modulation (PWM) applications. The 33879 incorporates SMARTMOS
technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power
MOSFETs. The 33879 controls various inductive, incandescent, or LED loads by
directly interfacing with a microcontroller. The circuit’s innovative monitoring and
protection features include very low standby currents, cascade fault reporting,
internal +45 V clamp voltage for low-side configuration, -20 V high-side
configuration, output specific diagnostics, and independent overtemperature
protection.
Document Number: MC33879
Rev. 11.0, 7/2016
33879
33879A
HIGH-SIDE/ LOW-SIDE SWITCH
Features
• Designed to operate 5.5 V < VPWR < 27.5 V
• 16-bit SPI for control and fault reporting, 3.3 V/5.0 V compatible
• Outputs are current limited (0.6 to 1.2 A) to drive incandescent lamps
• Output voltage clamp, +45 V (low-side) and -20 V (high-side) during
inductive switching
• On/Off control of open load detect current (LED application)
• Internal reverse battery protection on VPWR
• Loss of ground or supply will not energize loads or damage IC
• Maximum 5.0 μA IPWR standby current at 13 V VPWR
• RDS(ON) of 0.75 Ω at 25 °C typical
• Short-circuit detect and current limit with automatic retry
• Independent overtemperature protection
EK SUFFIX (PB-FREE)
98ARL10543D
32-PIN SOICW
Applications
• Solenoids
• Relays
• Actuators
• Stepper motors
• Brush DC motors
• Incandescent lamps
VPWR
5.0 V
MCU
A0
MOSI
SCLK
CS
MISO
PWM1
PWM2
VBAT
33879
VPWR
VDD
EN
D1
D2
D3
D4
S1
S2
S3
DI S4
SCLK
CS
D0
IN5
IN6
GND
D5
D6
D7
D8
S5
S6
S7
S8
M
High-side Drive
H-Bridge Configuration
VBAT VBAT
Low-side Drive
Figure 1. 33879 simplified application diagram
© 2016 NXP B.V.


NXP Semiconductors Electronic Components Datasheet

MC33879 Datasheet

Configurable octal serial switch

No Preview Available !

1 Orderable parts
Table 1. Orderable part variations
Part number (1)
MC33879APEK
MC33879TEK
Temperature (TA)
-40 to 125 °C
Notes
1. To order parts in Tape & Reel, add the R2 suffix to the part number.
Table 2. Device variations
Symbol
Characteristic
VPWR
IOUT(FLT-TH)
IOCO
IOCO
I EN
VOUT(FLT-TH)
IOUT(FLT-TH)
VPWR Supply Voltage
• 33879
• 33879A
Output Fault Detection Current @ Threshold, High-side Configuration
Outputs Programmed OFF
• 33879
• 33879A
Output OFF Open Load Detection Current, High-side Configuration
VDRAIN = 16 V, VSOURCE = 0 V, Outputs Programmed OFF,
VPWR = 16 V
• 33879
• 33879A
Output OFF Open Load Detection Current, Low-side Configuration
VDRAIN = 16 V, VSOURCE = 0 V, Outputs Programmed OFF,
VPWR =16 V
• 333879
• 338979A
EN Pull-down Current
EN = 5.0 V
• 333879
• 33879A
Output Fault Detection Voltage Threshold
Outputs Programmed OFF
• 33879
• 33879A
Output Fault Detection Current @ Threshold, Low-side Configuration
Outputs Programmed OFF
• 33879
• 33879A
Min.
-16
-16
35
35
65
60
40
40
20
20
2.5
2.5
20
20
Package
32 SOICW-EP
Typ.
55
55
100
100
75
75
45
45
4.0
4.0
30
30
Max.
40
45
90
150
160
190
135
150
100
110
4.5
5.0
60
115
Unit
V
μA
μA
μA
μA
V
μA
33879
2
NXP Semiconductors


Part Number MC33879
Description Configurable octal serial switch
Maker NXP
PDF Download

MC33879 Datasheet PDF






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