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PDF PC33996 Data sheet ( Hoja de datos )
| Número de pieza | PC33996 | |
| Descripción | 16-Output Switch | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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Freescale Semiconductor, Inc.
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 < VPWR < 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)
• VPWR Standby Current < 10 µA
• RDS(ON) of 0.55 Ω at 25°C Typical
• Independent Overtemperature Protection
• Output Selectable for PWM Control
• Output ON Short-to-VBAT 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
Temperature
Range (TA)
Package
PC33996EK/R2 -40°C to 125°C 32 SOICW-EP
33996SSimimplipfileidfieAdppAlicpaptiloicnaDtiiaognraDmiagram
VDD
MCU
SCLK
CS
MISO
MOSI
PWM
RST
3.3 V/5.0 V
33996
VPWR
SOPWR
VPWR
VBAT
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
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
For More Information On This Product,
Go to: www.freescale.com
http://www.Datasheet4U.com/
1 page  
Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 3.1 V ≤ SOPWR ≤ 5.5 V, 5.0 V ≤ VPWR ≤ 18 V, -40°C ≤ TC ≤ 125°C unless otherwise noted.
Where applicable, typical values noted reflect the parameter ‘s approximate value with VPWR = 13 V, TA = 25°C.
Characteristic
Symbol
Min
Typ
Max
Unit
POWER SUPPLY
Supply Voltage Range
Fully Operational
VPWR (FO)
V
5.0 – 27
Supply Current
All Outputs ON, IOUT = 0.3 A
Sleep State Supply Current at RST ≤ 0.2 SOPWR and/or
SOPWR ≤ 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
IPWR (ON)
IPWR (SS)
VOV
VOV (HYS)
VPWR (UV)
SOPWR
ISOPWR(RSTH)
ISOPWR(RSTL)
SOPWR (UNVOL)
–4
-10
27.5
0.8
–3
3.1–5
100
-10
2.0
.0
1.0
31.5
1.4
.2
–
–
2.5
mA
8.0
10 µA
35 V
2.3 V
3.5 V
.5 V
500 µA
10 µA
3.0 V
POWER OUTPUT
Drain-to-Source ON Resistance (IOUT = 0.35 A, VPWR = 13 V)
TJ = 125°C
TJ = 25°C
TJ = -40°C
Output Self-Limiting Current
Outputs Programmed ON
RDS(ON)
I OUT (lim)
–
–
–
0.9
0.75
0.55
0.45
1.2
Ω
1.2
1.2
1.2
A
2.5
Output Fault Detect Threshold (Note 11)
Outputs Programmed OFF
VOUTth (F)
V
2.5 3.0 3.5
Output Off Open Load Detect Current (Note 12)
Outputs Programmed OFF (VPWR = 5.0 V)
Outputs Programmed OFF (VPWR = 13 V, 18 V)
Output Clamp Voltage
IOUT = 20 ≤ mA
Output Leakage Current
SOPWR ≤ 2.0 V
I OCO(5)
I OCO(13,18)
VCL
25
30
45
µA
50 100
50 100
V
50 55
IOUT(lkg)
µA
-10 2.0
10
Overtemperature Shutdown (Outputs OFF) (Note 13)
Overtemperature Shutdown Hysteresis (Note 13)
TLIM 155 165 180 °C
TLIM (hys)
5.0
10
20 °C
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 CIRFCoUrITMDoErVeICEInDfAoTrAmation On This Product,
Go to: www.freescale.com
33996
5http://www.Datasheet4U.com/
5 Page 
Freescale Semiconductor, Inc.
to output 0. Refer to the LOGIC OPERATION section (below)
for more information. The SI/SO shifting of data follows a first-
in, first-out protocol, with both input and output words
transferring the Most Significant Bit (MSB) first.
SO Output Driver Power Supply (SOPWR) Pin
The SOPWR pin is used to supply power to the 33996 SO
output driver and Power-ON Reset (POR) circuit. To achieve
low standby current on VPWR supply, power must be removed
from the SOPWR pin. The 33996 will be in reset with all drivers
OFF when SOPWR is below 2.5 V. The 33996 does not detect
overvoltage on the SOPWR supply pin.
Output/Input (OUT0–OUT15) Pins
These pins are low-side output switches controlling the load.
Reset (RST) Pin
The Reset (RST) pin is the active low reset input pin used to
turn OFF all outputs, thereby clearing all internal registers.
Battery Input (VPWR) Pin
The VPWR pin is used as the input power source for the
33996. The voltage on VPWR is monitored for overvoltage
protection and shutdown. An overvoltage condition (> 50 µs) on
the VPWR pin will cause the 33996 to shut down all outputs
until the overvoltage condition is removed. Upon return to
normal input voltage, the outputs will respond as programmed
by the overvoltage bit in the Global Shutdown/Retry Control
register. The overvoltage threshold on the VPWR pin is
specified as 27.5 V to 35 V with 1.4 V typical hysteresis.
Following an overvoltage shutdown of output drivers, the
Overvoltage Fault and the Any Fault bits in the SO bit stream
will be logic [1].
PWM Pin
The PWM Control pin is provided to support PWM of any
combination of outputs. The LOGIC OPERATION section
describes the logic for PWM control.
LOGIC OPERATION
Introduction
The 33996 provides flexible control of 16 low-side driver
outputs. The device allows PWM and ON/OFF control through
the use of several 24-bit input command words. This section
describes the logic operation and command registers of the
33996.
The 33996 message set consists of seven messages as
shown in Table 1. Bits 23 through18 determine the specific
command and bits 15 through 0 determine how a specific
output will operate. The 33996 operates on the command word
on the rising edge of CS.
Note Upon Power-ON Reset all bits are defined as shown in
Table 1.
Commands
ON/OFF Control
0=off, 1=on
Open Load Current Enable
0=disable, 1=enable
Global Shutdown/Retry
Control
0=s hutdown, 1=r etry
SFPD Control
1=t herm only, 0= VDS
PWM Enable
0=SPI only, 1=PWM
AND/OR Control
0=P WM pin AND with SPI
1=P WM pin OR with SPI
Reset
SO Response
0=N o Fault, 1= Fault
MSB
23
22
00
21
0
000
000
000
000
000
00
Any Over-
Fault voltage
0
00
20
0
0
0
0
1
1
1
Table 1. SPI Control Commands
Bits
19 18
17
16 15 14 13 12 11 10 9
00
X
X 0 000000
876543
000000
01
X
X 0 000000
1
0
Thermal
Bit 0
Over-
voltage
0
XXXX
11
X
X 1 111111
XXXXXX
000000
111111
00
X
X 0 000000
000000
XXXXXX
LSB
210
000
000
111
000
01
10
00
X
X
0
X 0 000000
000000
000
X XXXX
XXXXXX
XXXXXX
0
OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ON/Off Control Register
To program the 16 outputs of the 33996 ON or OFF, a 24-bit
serial stream of data is entered into the SI pin. Thefirst 8 bits of
the control word are used to identify the on/off command and
the remaining 16 bits are used to turn ON or OFF the specific
output driver.
MOTOROLA ANALOG INTEGRATED CIRFCoUrITMDoErVeICEInDfAoTrAmation On This Product,
Go to: www.freescale.com
33996
11http://www.Datasheet4U.com/
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet PC33996.PDF ] | |
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