MC33997DW Freescale Semiconductor, MC33997DW Datasheet

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MC33997DW

Manufacturer Part Number
MC33997DW
Description
IC SWITCH 3.3/5V SUPPLY 24-SOIC
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC33997DW

Applications
Switching Power Supply, Microprocessor
Voltage - Input
6 ~ 26.5 V
Number Of Outputs
5
Voltage - Output
3.3V, 5V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC33997DW
Manufacturer:
FREESCALE Semiconductor
Quantity:
6
Freescale Semiconductor
Advance Information
* 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.
Switching Power Supply with
Linear Regulators
circuit that is capable of operating over a wide input voltage range, from
6.0 V up to 26.5 V with 40 V transient capability. It incorporates a
sensorless current mode control step-down switching controller
regulating directly to 5.0 V. The 3.3 V linear regulator uses an external
pass transistor to reduce the 33997 power dissipation. The 33997 also
provides a 3.3 V linear standby regulator and two 5.0 V sensor supply
outputs protected by internal low-resistance LDMOS transistors.
outputs and standard supervisory functions such as resets with power-
up reset delay.
microprocessor architectures such as the Freescale MPC5xx and
683xx microprocessor families.
Features
• Operating Voltage Range 6.0 V up to 26.5 V (40 V transient)
• Step-Down Switching Regulator Output V
• Linear Regulator with External Pass Transistor V
• Low-Power Standby Linear Regulator V
• Two 5.0 V @ 200 mA (typical) Sensor Supplies V
• Undervoltage Shutdown on the V
• Reset Signals
• Power-Up Delay
• Enable Pins for Main Supplies (EN) and Sensor Supplies (SNSEN)
• Power Sequencing for Advanced Microprocessor Architectures
• Pb-Free Packaging Designated by Suffix Code EG
The 33997 is a medium-power, multi-output power supply integrated
There are two separate enable pins for the main and sensor supply
The 33997 provides proper power supply sequencing for advanced
(total)
400 mA
Against Short-to-Battery and Short-to-Ground with Retry Capability
Capability
DDL
5.0 V
5.0 V
Figure 1. 33997 Simplified Application Diagram
, V
DDH
KAM
DDH
Outputs with Retry
= 3.3 V @ 10 mA
= 5.0 V @ 1400 mA
DDL
KA_VPWR
REF
VPWR
VREF1
VREF2
EN
SNSEN
GND
= 3.3 V @
Protected
33997
VKAMOK
PWROK
VDDH
VKAM
DRVL
VSW
FBL
MC33997DW/R2
MC33997EG/R2
Device
V DDH
V DDL
ORDERING INFORMATION
SWITCHING REGULATOR
5.0 V
3.3 V
3.3 V
EG SUFFIX (PB-FREE)
MCU
24-PIN SOICW
98ASB42344B
33997
DW SUFFIX
-40°C to 125°C
Document Number: MC33997
Temperature
Range (T
A
)
Rev 4.0, 6/2006
24 SOICW
Package

Related parts for MC33997DW

MC33997DW Summary of contents

Page 1

... Figure 1. 33997 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 1400 mA DDH = 3 DDL = 3 KAM MC33997DW/R2 Protected REF MC33997EG/ Outputs with Retry DDH 33997 KA_VPWR VSW ...

Page 2

... Snsenb Reg. POR Snsenb Snsenb Enable Control Reg. Enb PwrOK SNSEN EN VSW 5.0 V FBKB VSUM V bg VDDH DRVL 3.3V Enb Linear Regulat or FBL 3.3 V Driver Enb 3.3V VKAM 3 Standby Reg. PWRO K VKAMO K VkamOK GND Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 3

... Sensor Supply #1 Output. The VREF1 pin is sensor supply output #1. 22 SNSEN Sensor Supply Enable Input. The SNSEN pin is an input, which enables the V allows the control module hardware / software to shut down the sensor supplies. Analog Integrated Circuit Device Data Freescale Semiconductor PIN CONNECTIONS VKAMOK 1 24 VKAM ...

Page 4

... Enable Input. The EN pin is an input, which enables the main switching regulator and all other functions. When this pin is low, the power supply low quiescent state. 24 VKAM Keep-Alive (standby) 3.3 V Regulator Output. This is a 3.3 V low quiescent, low dropout regulator for Keep Alive memory. 33997 4 Definition Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 5

... Per SEMI G38-87 and JEDEC JESD51-2 with the single layer board horizontal. 5. Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on the top surface of the board near the package. Analog Integrated Circuit Device Data Freescale Semiconductor ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Symbol KA_V ...

Page 6

... 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. 33997 6 Symbol T ( STG T S Analog Integrated Circuit Device Data Value Unit -40 to 125 °C -40 to 150 °C -55 to 150 °C 260 °C Freescale Semiconductor ...

Page 7

... V and 5.1 V (200 mA to 1.4 A) for V DDH b) V must be between 4.8 V and 5.5 V (200 mA to 1.4 A) for V DDH 9. Part can survive, but no parameters are guaranteed. 10. Guaranteed by design but not production tested. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ ≤ ≤ -40° PWR J ...

Page 8

... V 3.0 – 3.6 V 3.0 – 3.6 3.0 – 3.6 3.0 – 3.6 2.0 – 3.5 mV -20 – 0.0 – 100 mV -20 – 20 µF – 4.7 – Ω – 1.4 – Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 9

... Enable Input Voltage Threshold (Pin EN) Enable Pull-Down Current (Pin EN 1 Sensor Enable Input Voltage Threshold (Pin SNSEN) Sensor Enable Pull-Down Current (Pin SNSEN) SNSEN = 1 DDH IL (min) Notes 12. Recommended value. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ ≤ ≤ -40° PWR J A Symbol ...

Page 10

... I PWR PWR VDDH 33997 10 ≤ ≤ ≤ ≤ -40° 125°C, using the typical application circuit (see PWR J A Symbol V CRES = 0 µ µ 25°C under nominal A Min Typ Max Unit V 12 – – 15 Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 11

... PWROK Delay Time (Power-On Reset) (see VKAMOK Delay Time (see Figure 7) VDDH Power-Up Delay Time (see Figure 8) Fault-Off Timer Delay Time (see Figure 9) Notes 13. Guaranteed by design but not production tested. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ ≤ ≤ ≤ -40° PWR J A Symbol f ...

Page 12

... TIMING DIAGRAMS 6 5.0 0 4. 5.0 0 5.0 0 3.3 0 Figure 6. PWROK Delay Timer (Power-On Reset) 33997 12 TIMING DIAGRAMS t SS 4.8V TIME Figure 4. Soft-Start Time t DET 2. RET TIME Figure 5. VREF Retry Timer D(PWR OK) TIME Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 13

... Analog Integrated Circuit Device Data Freescale Semiconductor PWR D(VKAMOK) TIME Figure 7. VKAMOK Delay Time t D (VPWR TIME Figure 8. VDDH Power-Up Delay Time 1.0V t FAU FAULT TIME Figure 9. Fault-Off Timer Delay Time ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS ...

Page 14

... Enable (EN) KAM input pin (see Figure 5), and the other PWR PWR input pin. output voltage does not reach its valid range DDH or V DDL for Fault-Off Timer operation details). Analog Integrated Circuit Device Data Freescale Semiconductor output DDL In both output ...

Page 15

... The 33997 has two voltage monitoring open-drain outputs, the PWROK and the VKAMOK pins. PWROK is "active high". This output is pulled low when either of the regulator outputs Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION ( are below their regulation windows. If both ...

Page 16

... V KAM = 3.3V VKAM 3. Standby @ 10mA 24 Reg 4.7uF 10k 10k PWROK 10 VKAMOK 1 VkamOK 5-8 GND 17-20 DDL REF1 and buffered outputs V (15) Manufacturer Nichicon Kemet Nichicon Kemet Kemet Kemet Any Manufacturer Any Manufacturer Analog Integrated Circuit Device Data Freescale Semiconductor and ...

Page 17

... Freescale does not assume liability, endorse, or warrant components from external manufacturers that are referenced in circuit drawings or tables. While Freescale offers component recommendations in this configuration the customer’s responsibility to validate their application. Analog Integrated Circuit Device Data Freescale Semiconductor Description / Part No. Ceramic X7R Ceramic X7R ...

Page 18

... For the most current revision of the package, visit www.freescale.com and perform a keyword search using the “98A” drawing number listed below. 33997 18 PACKAGING PACKAGE DIMENSIONS DWB SUFFIX EG SUPPFFIX (PB-FREE) 24 PIN SOIC WIDE BODY PLASTIC PACKAGE 98ASB42344B ISSUE F Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 19

... REVISION DATE DESCRIPTION OF CHANGES • Converted to Freescale format 6/2006 4.0 • Update to the prevailing Freescale form and style. Analog Integrated Circuit Device Data Freescale Semiconductor REVISION HISTORY REVISION HISTORY 33997 19 ...

Page 20

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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