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Freescale Semiconductor Electronic Components Datasheet

33289 Datasheet

Dual High-Side Switch

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www.DFaretaeSshceeatl4eUS.ceommiconductor
Advance Information
Document Number: MC33289
Rev. 4.0, 6/2006
Dual High-Side Switch 40 m
The 33289 is a Dual High Side Switch (DHSS) dedicated for use
in automotive applications. It is designed to drive typical inductive
loads such as solenoid valves.
This device consists of two independent 40 mRDSON MOSFET
channels plus corresponding control circuitry in a surface mount
package. The 33289 can be interfaced directly to a microcontroller for
input control and monitoring of diagnostic output.
Each switch offers independent protection and diagnosis during
overcurrent, overvoltage, and undervoltage conditions, as well as an
overtemperature shutdown feature.
A logic low on the Open Load Detect Enable pin (OLDE) minimizes
bias current drain by disabling the open load circuitry current source.
The device also has a very low quiescent current in standby mode.
FEATURES
• Designed to drive Automotive Inductive loads
• Operating Voltage Range from 6.0 V to 27 V
• Maximum Breakdown Voltage greater than 40 V
• 40 mRDSON at 25°C
• Overtemperature Protection with Hysteresis
• Overcurrent protection
• Under Voltage Shutdown
• Over Voltage Shutdown
• Open Load Detection in Off-State
• Independent Diagnostic Output
• ESD Protection 2.0 kV
• Standby Current less than 5.0 µA at VBAT below 14 V
33289
DUAL HIGH-SIDE SWITCH
DW SUFFIX)
98ASB42343B
20-PIN SOICW
ORDERING INFORMATION
Device
MC33289DW/R2
Temperature
Range (TA)
-40°C to 125°C
Package
20 SOICW
MCU
VPWR
5.0 V 33289
VBAT
OUT1
ST1 OUT2
ST2
IN1
IN2 GND
OLDE
Figure 1. 33289 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2006. All rights reserved.


Freescale Semiconductor Electronic Components Datasheet

33289 Datasheet

Dual High-Side Switch

No Preview Available !

PIN CONNECTIONS
PIN CONNECTIONS
PIN ASSIGNMENT
VBAT 1
VBAT 2
OUT1 3
OUT1 4
VBAT 5
VBAT 6
NC 7
IN1 8
ST1 9
OLDE 10
20 VBAT
19 VBAT
18 OUT2
17 OUT2
16 VBAT
15 VBAT
14 NC
13 IN2
12 ST2
11 GND
Figure 2. 33289 Pin Connections
Table 1. Pin Function Description
Pin Number
Pin Name
Pin Function
Definition
1, 2, 5, 6, 15, 16,
19, 20
VBAT
Supply Voltage
These are the power supply pins of the device. These pins are directly connected
with the lead frame of the package and are tied to the drain of the switching
MOSFET. These pins can be directly connected to the battery voltage. In addition
to their supply function, these pins participate to the thermal behavior of the
device in conducting the heat from the switching MOSFET to the printed circuit
board.
3, 4, 18, 17
OUT1
OUT2
OUTPUT Channel 1
OUTPUT Channel 2
Pins 3 and 4 are the output 1 pins. Pins 17 and 18 are the output 2 pins. They are
directly connected to the source of the power MOSFET. These pins are used by
the control circuitry to sense the device output voltage. The RDSON is 40 mmax
per output at 25°C and will increase to a maximum of 75 mat 150°C junction
temperature.
8, 13
IN1 INPUT Channel 1 These are the device input pins which directly control their associated outputs.
IN2
INPUT Channel 2
The levels are CMOS compatible. When the input is a logic low, the associated
output MOSFET is in the off state. When input is high, the MOSFET is turned on
and the load is activated.
When both inputs are low, the device is in standby mode and its supply current is
reduced. Each input pin has an internal active pull down, so that it will not float if
disconnected.
9, 12
ST1 Status for Channel 1 These pins are the channel 1 and channel 2 fault detection flags. Their internal
ST2 Status for Channel 2 structure is an open drain architecture with an internal clamp at 6.0 V. An external
pull up resistor connected to VDD (5.0 V) is needed. This is an active low output.
If the device is in its normal condition the status lines will be high. If open load or
other fault occurs, the associated channel status flag will be pulled low. See
Functional Truth Table.
10
OLDE
Open Load Detection This pin is a digital input which enables the open load current diagnostic circuitry.
Enable
When OLDE is a logic low, the open load circuitry is not powered and the device’s
bias current draw is at a minimum. If OLDE is a logic high, the open load circuitry
is functional at the price of a higher bias current draw. OLDE pin has a pull down
resistor.
11
GND
GROUND
This is the GND pin of the device.
33289
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number 33289
Description Dual High-Side Switch
Maker Freescale Semiconductor
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33289 Datasheet PDF






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