mc33988 Freescale Semiconductor, Inc, mc33988 Datasheet
mc33988
Available stocks
Related parts for mc33988
mc33988 Summary of contents
Page 1
... HS1 SI SO SCLK SCLK CS CS HS0 SI SO RST I/O INO I/O IN1 I/O CSNS A/D FSI GND Document Number: MC33988 Rev. 4.0, 11/2009 33988 HIGH SIDE SWITCH BOTTOM VIEW PNA SUFFIX 98ARL10521D 16-PIN PQFN ORDERING INFORMATION Temperature Package Range ( 40°C to 125°C 16 PQFN LOAD LOAD ...
Page 2
INTERNAL BLOCK DIAGRAM VDD SPI 3.0 MHz SI SCLK FS IN[0:1] RST WAKE I R DWN DWN Programmable Watchdog 310ms–2500ms FSI Figure 2. 33988 Simplified Internal Block Diagram 33988 2 INTERNAL BLOCK DIAGRAM V IC Internal ...
Page 3
Figure 3. 33988 Pin Connections (Transparent Top View) Table 1. Pin Definitions Functional descriptions of many of these pins can be found in the Functional Pin Description section beginning on Pin Pin Pin Name Function 1 CSNS Output Output Current ...
Page 4
PIN CONNECTIONS Table 1. Pin Definitions (continued) Functional descriptions of many of these pins can be found in the Functional Pin Description section beginning on Pin Pin Pin Name Function 11 SO Output 12 IN1 Input 13 GND Ground 14 ...
Page 5
Table 2. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Rating ELECTRICAL RATINGS Operating Voltage Range Steady-State VDD Supply Voltage (1) Input/Output Voltage (1) SO Output Voltage WAKE Input Clamp Current CSNS Input Clamp Current Output ...
Page 6
ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 2. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Rating THERMAL RATINGS Operating Temperature Ambient Junction Storage Temperature (5) Thermal Resistance Junction-to-Case Junction-to-Ambient Peak Package Reflow Temperature During Reflow Notes 5. ...
Page 7
STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic POWER INPUT Battery Supply Voltage Range Full Operational VPWR Operating Supply Current Output ON, ...
Page 8
ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics (continued) Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic POWER OUTPUT ( Output Drain-to-Source ON Resistance I HS[0: ...
Page 9
Table 3. Static Electrical Characteristics (continued) Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic POWER OUTPUT (CONTINUED) Current Sense Ratio (C ) Accuracy SR1 Output Current 2.5A 5.0A 6.25A 7.5A ...
Page 10
ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics (continued) Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic CONTROL INTERFACE (13) Input Logic High-voltage (13) Input Logic Low-voltage (14) ...
Page 11
DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic Electrical Characteristics Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic POWER OUTPUT TIMING Output Rising Slow Slew Rate A (DICR 9.0V ...
Page 12
ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic Electrical Characteristics (continued) Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic POWER OUTPUT TIMING (CONTINUED) Overcurrent Detection Blanking Time (OCLT [1:0]) 00 ...
Page 13
Table 4. Dynamic Electrical Characteristics (continued) Characteristics noted under conditions 4.5V ≤ V Typical values noted reflect the approximate parameter mean at T Characteristic SPI INTERFACE CHARACTERISTICS Recommended Frequency of SPI Operation (24) Required Low State Duration for RST Rising ...
Page 14
ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS CS V PWR VPWR V -0.5V VPWR - 0.5V PWR V -3.5V VPWR - 3V PWR 0.5V HS 0.5V t Tdly (on) DLY(ON) I OCHx Load Current I OCLx I OCH0 I OCH1 I OCL0 I ...
Page 15
Figure 6 illustrates the over-current detection level ( the device can reach for each over-current detection OCHX blanking time ( OCHX OCLX RSTB RST 0 0.2 VDD DD TwRSTB t ENBL t WRST ...
Page 16
FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION The 33988 is a dual self-protected 8.0mΩ silicon switch used to replace electromechanical relays, fuses, and discrete devices in power management applications. The 33988 is designed for harsh environments, and includes self-recovery features. The device ...
Page 17
DIGITAL DRAIN VOLTAGE (VDD) This is an external voltage input pin used to supply power to the SPI circuit. In the event V is lost, an internal supply DD provides power to a portion of the logic, ensuring limited functionality ...
Page 18
FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION MCU INTERFACE POWER SUPPLY The 33988 is designed to operate from 4.0V to 28V on the VPWR pin. Characteristics are provided from 6.0V to 20V for the device. The VPWR ...
Page 19
FUNCTIONAL DEVICE OPERATION The 33988 has four operating modes: Sleep, Normal, Fault, and Fail-safe. Table 5 summarizes details contained in succeeding paragraphs. Table 5. Fail-Safe Operation and Transitions to Other 33988 Modes Mode FS WAKE RST WDTO Device is in ...
Page 20
FUNCTIONAL DEVICE OPERATION PROTECTION AND DIAGNOSIS FEATURES FAULT MODE The 33988 indicates the following faults as they occur by driving the pin to Logic [0]: FS • Over-temperature fault • Open load fault • Over-current fault (high and low) • ...
Page 21
GROUND DISCONNECT PROTECTION In the event the 33988 ground is disconnected from load ground, the device protects itself and safely turns OFF the output regardless the state of the output at the time of Table 7. Device Behavior in Case ...
Page 22
FUNCTIONAL DEVICE OPERATION LOGIC COMMANDS AND REGISTERS SPI PROTOCOL DESCRIPTION The SPI interface has a full duplex, three-wire synchronous data transfer with four I/O lines associated with it: Serial Clock (SCLK), Serial Input (SI), Serial Output (SO), and Chip Select ...
Page 23
SCLK Notes Logic [1] state during the above ...
Page 24
FUNCTIONAL DEVICE OPERATION LOGIC COMMANDS AND REGISTERS DEVICE REGISTER ADDRESSING The following section describes the possible register addresses and their impact on device operation. Address x000 — Status Register (STATR) The STATR register is used to read the device status ...
Page 25
Address x100 — Direct Input Control Register (DICR) The DICR register is used by the MCU to enable, disable, or configure the direct IN pin control of each output. Each output is independently selected for configuration based on the state ...
Page 26
FUNCTIONAL DEVICE OPERATION LOGIC COMMANDS AND REGISTERS SERIAL OUTPUT COMMUNICATION (DEVICE STATUS RETURN DATA) When the pin is pulled low, the output status register is CS loaded. Meanwhile, the data is clocked out MSB- (OD7-) first as the new message ...
Page 27
Table 16. Fault Register OD7 OD6 OD5 OD4 OD3 s OTF OCHFs OCLFs OLFs OD7 (s) = Selection of output: Logic [0] = HS0, Logic [1] = HS1. OD6 (OTF) = Over-temperature Flag. OD5 (OCHFs) = Over-current High Flag. (This ...
Page 28
TYPICAL APPLICATIONS The 33988 can be configured in several applications. The figure below shows the 33988 in a typical main switch application. V PWR 2.2k 10k MCU I/O I/O SCLK CS I I/O A/D ...
Page 29
TYPICAL APPLICATIONS Figure 13. Maximum Turn-off Current Versus Inductive Load (Single Pulse for R 33988 and 150°C Initial) L PWR J Analog Integrated Circuit Device Data Freescale Semiconductor ...
Page 30
PACKAGING SOLDERING INFORMATION SOLDERING INFORMATION The 33988 is packaged in a surface mount power package intended to be soldered directly on the printed circuit board. The 33988 was qualified in accordance with JEDEC standards JESD22-A113-B and J-STD-020A. The recommended reflow ...
Page 31
For the most current revision of the package, visit Analog Integrated Circuit Device Data Freescale Semiconductor PACKAGE DIMENSIONS www.freescale.com and perform a keyword search on 98ARL10521D. PNA SUFFIX 16-PIN PQFN 98ARL10521D ISSUE C PACKAGING PACKAGE DIMENSIONS 33988 31 ...
Page 32
PACKAGING PACKAGE DIMENSIONS (CONTINUED) 33988 32 PACKAGE DIMENSIONS (CONTINUED) PNA SUFFIX 16-PIN PQFN 98ARL10521D ISSUE C Analog Integrated Circuit Device Data Freescale Semiconductor ...
Page 33
REVISION DATE DESCRIPTION OF CHANGES 1/2007 • Initial release 1.0 • Changed typ and max number on 5/2007 2.0 • Changed min on • Changed labels on (OSD[2:0]) • Corrected labels on • Updated Freescale format and style 8/2007 3.0 ...
Page 34
... Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc. 2007 - 2009. All rights reserved. MC33988 Rev. 4.0 11/2009 ...