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Details for LM22670MRX-ADJ/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
DC/DC CONV SYNC BUCK 1MHZ SO POWERPAD
LM22670MRX-ADJ/NOPB image

LM22670MRX-ADJ/NOPB by Texas Instruments

DC/DC CONV SYNC BUCK 1MHZ SO POWERPAD
Features
100-mu2126 N-channel MOSFET SO PowerPADu2122-8 Package
120-mu2126 N-channel MOSFET PFM Package
500-kHz Default Switching Frequency
Adjustable Switching Frequency and Synchronization
Fully WEBENCHu00ae Enabled
Integrated Boot-Strap Diode
Integrated Soft-Start
Internally Compensated Voltage Mode Control
LM22670-Q1 is an Automotive-Grade Product
Output Voltage Options: -ADJ (Outputs as Low as 1.285 V) -5.0 (Output Fixed to 5 V)
Precision Enable Pin
Stable With Low ESR Ceramic Capacitors
Wide Input Voltage Range: 4.5 V to 42 V
u00b11.5% Feedback Reference Accuracy
u201340u00b0C to 125u00b0C Operating Junction Temperature Range
Part Information
LM22670MRX-ADJ/NOPB image
RoHS Compliant
Description
The LM22670 switching regulator provides all of the functions necessary to implement an efficient highvoltage step-down (buck) regulator using a minimum of external components. This easy-to-use regulator incorporates a 42-V N-channel MOSFET switch that can provide up to 3 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5-V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typical). Built in soft-start (500 µs, typical) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22670 device is a member of Texas Instruments' SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easyto-use complete design using a minimum number of external components and the TI WEBENCH design tool. TI's WEBENCH tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.
Specifications
Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
4.5V
Input Voltage Max:
42V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
SO PowerPAD
No. of Pins:
8Pins
Output Current:
3A
Output Voltage Min:
1.285V
Output Voltage Max:
37V
Switching Frequency:
1MHz
Operating Temperature Max:
125°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (27-Jun-2018)
Alternate Descriptions
Conv DC-DC Single Step Down 4.5V to 42V 8-Pin PSOP EP T/R Avnet America
Conv DC-DC Single Step Down 4.5V to 42V 8-Pin PSOP EP T/R Avnet Europe