LM22676MRX-5.0/NOPB Power Regulator IC Switching Voltage Regulators 42V, 3A SIMPLE SWITCHER Step-Down Volta
digital voltage regulator ic
,electronic voltage regulator circuit
LM22676MRX-5.0/NOPB Power Regulator IC Switching Voltage Regulators 42V, 3A SIMPLE SWITCHER Step-Down Volta
1 Features
- Wide Input Voltage Range: 4.5 V to 42 V
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Internally Compensated Voltage Mode Control
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Stable with Low ESR Ceramic Capacitors
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120 mΩ N-Channel MOSFET PFM Package
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100 mΩ N-Channel MOSFET PSOP-8 Package
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Output Voltage Options:
-ADJ (Outputs as Low as 1.285 V) -5.0 (Output Fixed to 5 V) -
±1.5% Feedback Reference Accuracy
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Switching Frequency of 500 kHz
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–40°C to 125°C Operating Junction Temperature Range
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Precision Enable Pin
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Integrated Boot-Strap Diode
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Integrated Soft-Start
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Fully WEBENCH® Enabled
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LM22676Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature)
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SO PowerPAD (Exposed Pad
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PFM (Exposed Pad)
2 Applications
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Industrial Control
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Telecom and Datacom Systems
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Embedded Systems
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Conversions from Standard 24 V, 12 V and 5 V Input Rails
3 Description
The LM22676 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing 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. A switching frequency of 500 kHz allows for small external components and good transient response. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 μA (typ). Built in soft-start (500 μs, typ) saves external components. The LM22676 also has built in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22676 is a member of Texas Instruments' SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easy to 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.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM22676, LM22676-Q1 |
HSOP (8) |
4.89 mm x 3.90 mm |
|
TO-263 (3) |
10.16 mm x 9.85 mm |
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