MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33996
Rev 1.0, 01/2004
Preliminary Information
16-Output Switch with SPI Control
The 33996 is a 16-output low-side switch with a 24-bit serial input control.
It is designed for a variety of applications including inductive, incandescent,
and LED loads. The Serial Peripheral Interface (SPI) provides both input
control and diagnostic readout. A Pulse Width Modulation (PWM) control input
is provided for pulse width modulation of multiple outputs at the same duty
cycle. A dedicated reset input provides the ability to clear all internal registers
and turn all outputs off.
The 33996 directly interfaces with microcontrollers and is compatible with
both 3.3 V and 5.0 V CMOS logic levels. The 33996, in effect, serves as a bus
expander and buffer with fault management features that reduce the MCU’s
fault management burden.
Features
• Designed to Operate 5.0 V < V
PWR
< 27 V
• 24-Bit SPI for Control and Fault Reporting, 3.3 V/5.0 V Compatible
• Outputs Are Current Limited (0.9 A to 2.5 A) to Drive Incandescent
Lamps
• Output Voltage Clamp of +50 V During Inductive Switching
• On/Off Control of Open Load Detect Current (LED Application)
• V
PWR
Standby Current < 10
µA
• R
DS(ON)
of 0.55
Ω
at 25°C Typical
•
•
•
•
•
Independent Overtemperature Protection
Output Selectable for PWM Control
Output ON Short-to-V
BAT
and OFF Short-to-Ground/Open Detection
32-Pin Exposed Pad Package for Thermal Performance
Pb-Free Packaging Designated by Suffix Code EK
33996
DUAL OCTAL SERIAL SWITCH
WITH SERIAL PERIPHERAL
INTERFACE I/O
EK (Pb-FREE) SUFFIX
CASE 1454-01
32-LEAD SOICW EXPOSED PAD
ORDERING INFORMATION
Device
PC33996EK/R2
Temperature
Range (T
A
)
-40°C to 125°C
Package
32 SOICW-EP
Simplified Application Diagram
33996 Simplified Application Diagram
3.3 V/5.0 V
VPWR
VBAT
33996
VDD
MCU
SCLK
CS
MISO
MOSI
PWM
RST
SCLK
CS
SI
SO
PWM
RST
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
GND
Solenoid/Relay
SOPWR
VPWR
LED
Lamp
This document contains information on a product under development.
Motorola reserves the right to change or discontinue this product without notice.
© Motorola, Inc. 2004
VPWR
6
OUT0
1
50 V
V
DD
Overvoltage
Detect
OVD
V
DD
RB
SFPDB
SFL
SCLK
CSB
SI
SO
CSI
CSBI
Voltage
Regulator
GE
OT
SF
OF
V
DD
Bias
Gate
Control
PWM
30
RST
27
CS
14
SCLK
11
SI
19
SO
22
SOPWR
3
10
µA
25
µA
10
µA
Input
Buffers
10
µA
10
µA
Serial D/O
Line Driver
To Gates
1to15
OUT1–OUT15:
2, 4, 5, 12, 13,
15, 16, 17, 18,
20, 21, 28, 29,
31, 32
Open
Load
Detect
Enable
V
Ref
I
Limit
50
µA
Short and
Open
Load
Detect
Overtemperature
Detect
From Detectors 1to15
R
S
SPI
Interface
Logic
GND Pins:
7–10
23– 26
Figure 1. 33996 Simplified Internal Block Diagram
33996
2
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
OUT0
OUT1
SOPWR
OUT2
OUT3
VPWR
GND
GND
GND
GND
SCLK
OUT4
OUT5
CS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OUT15
OUT14
PWM
OUT13
OUT12
RST
OUT6
OUT7
GND
GND
GND
GND
SO
OUT11
OUT10
SI
OUT9
OUT8
PIN FUNCTION DESCRIPTION
Pin
1, 2, 4, 5, 12, 13,
15–18, 20, 21,
28, 29, 31, 32
3
6
7–10, 23–26
11
14
19
22
27
30
Pin Name
OUT0–OUT15
Formal Name
Output 0–Output 15
Open drain output pin.
Definition
SOPWR
VPWR
GND
SCLK
CS
SO
PWR
Supply Pin
Battery Input
Ground
System Clock
Chip Select
Serial Input
Serial Output
Reset
PWM Control
Power supply pin to the SO output driver.
Battery supply input pin.
Ground for logic, analog, and power output devices.
System Clock for internal shift registers of the 33996.
SPI control chip select input pin from the MCU to the 33996.
Serial data input pin to the 33996.
Serial data output pin.
Active low reset input pin.
PWM control input pin. Supports PWM on any combination of outputs.
SI
SO
RST
PWM
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33996
3
MAXIMUM RATINGS
All voltages are with respect to ground unless otherwise noted.
Rating
VPWR Supply Voltage (Note 1)
SO Output Driver Power Supply Voltage (Note 1)
SPI Interface Logic Input Voltage (
CS
, PWM, SI, SO, SCLK,
RST
) (Note 1)
Output Drain Voltage
Frequency of SPI Operation (Note 2)
Output Clamp Energy (Note 3)
ESD Voltage (Note 4)
Human Body Model (Note 5)
Machine Model (Note 6)
Storage Temperature
Operating Case Temperature
Operating Junction Temperature
Power Dissipation (T
A
=
25°C) (Note 7)
Lead Soldering Temperature (Note 8)
Thermal Resistance
Junction-to-Ambient (Note 9)
Junction- to-Lead (Note 10)
Junction-to-Flag
Notes
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
R
θ
JA
R
θ
JL
R
θ
JC
75
8.0
1.2
V
ESD1
V
ESD2
T
STG
T
C
T
J
P
D
T
SOLDER
±2000
±200
-50 to 150
-40 to 125
-40 to 150
1.5
260
°C
°C
°C
W
°C
°C/W
Symbol
V
PWR
SO
PWR
V
IN
V
D
Value
-1.5 to 50
-0.3 to 7.0
-0.3 to 7.0
-0.3 to 45
6.0
50
Unit
V
V
V
V
MHz
mJ
V
f
SPI
E
CLAMP
Exceeding these limits may cause malfunction or permanent damage to the device.
This parameter is guaranteed by design but not production tested.
Maximum output clamp energy capability at 150°C junction temperature using single nonrepetitive pulse method.
ESD data available upon request.
ESD1 testing is performed in accordance with the Human Body Model (C
ZAP
= 100 pF, R
ZAP
= 1500
Ω).
ESD2 testing is performed in accordance with the Machine Model (C
ZAP
= 200 pF, R
ZAP
= 0
Ω).
Maximum power dissipation with no heat sink used.
Lead soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may
cause malfunction or permanent damage to the device.
Tested per JEDEC test JESD52-2 (single-layer PWB).
Tested per JEDEC test JESD51-8 (two-layer PWB).
33996
4
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 3.1 V
≤
SO
PWR
≤
5.5 V, 5.0 V
≤
V
PWR
≤
18 V, -40°C
≤
T
C
≤
125°C unless otherwise noted.
Where applicable, typical values noted reflect the parameter ‘s approximate value with V
PWR
= 13 V, T
A
= 25°C.
Characteristic
Symbol
Min
Typ
Max
Unit
POWER SUPPLY
Supply Voltage Range
Fully Operational
Supply Current
All Outputs ON, I
OUT
= 0.3 A
Sleep State Supply Current at
RST
≤
0.2 SO
PWR
and/or
SO
PWR
≤
0.5 V
Overvoltage Shutdown
Overvoltage Shutdown Hysteresis
VPWR Undervoltage Shutdown
SPI Interface Logic Supply Voltage
SPI Interface Logic Supply Current (
RST
Pin High)
SPI Interface Logic Supply Current (
RST
Pin Low)
SPI Interface Logic Supply Undervoltage Lockout Threshold
I
PWR(SS)
V
OV
V
OV(
HYS
)
V
PWR(UV)
SO
PWR
I
SOPWR(RSTH)
I
SOPWR(RSTL)
SO
PWR(
UNVOL
)
I
PWR(ON)
–
-10
4.0
1.0
8.0
10
µA
V
PWR(FO)
5.0
–
27
mA
V
27.5
0.8
–
3.1
100
-10
2.0
31.5
1.4
3.2
–
–
–
2.5
35
2.3
3.5
5.5
500
10
3.0
V
V
V
V
µA
µA
V
POWER OUTPUT
Drain-to-Source ON Resistance (I
OUT
= 0.35 A, V
PWR
= 13 V)
T
J
= 125
°
C
T
J
= 25
°
C
T
J
= -40
°
C
Output Self-Limiting Current
Outputs Programmed ON
Output Fault Detect Threshold (Note 11)
Outputs Programmed OFF
Output Off Open Load Detect Current (Note 12)
Outputs Programmed OFF (V
PWR
= 5.0 V)
Outputs Programmed OFF (V
PWR
= 13 V, 18 V)
Output Clamp Voltage
I
OUT
= 20
≤
mA
Output Leakage Current
SO
PWR
≤
2.0 V
Overtemperature Shutdown (Outputs OFF) (Note 13)
Overtemperature Shutdown Hysteresis (Note 13)
T
LIM
T
LIM(
hys
)
I
OUT(
lkg
)
-10
155
5.0
2.0
165
10
10
180
20
°C
°C
I
OCO(5)
I
OCO(13,18)
V
CL
45
50
55
µA
25
30
50
50
100
100
V
V
OUTth(F)
2.5
3.0
3.5
µA
I
OUT(
lim
)
0.9
1.2
2.5
V
R
DS(ON)
–
–
–
0.75
0.55
0.45
1.2
1.2
1.2
A
Ω
Notes
11. Output Fault Detect Thresholds with outputs programmed OFF. Output Fault Detect Thresholds are the same for output open and shorts.
12. Output OFF Open Load Detect Current is the current required to flow through the load for the purpose of detecting the existence of an open
load condition when the specific output is commanded to be OFF.
13. This parameter is guaranteed by design but not production tested.
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33996
5
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