LM22679EVAL/NOPB National Semiconductor, LM22679EVAL/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM22679EVAL/NOPB
• Description: BOARD EVALUATION FOR LM22679
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r

Specifications of LM22679EVAL/NOPB

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 5A
• Voltage - Input: 4.5 ~ 42V
• Regulator Topology: Buck
• Frequency - Switching: 500kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM22679
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM22679EVAL; LM22679EVAL

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Output Voltage
Pin
Connection Diagram
Ordering Information
Pin Descriptions
1
2
3
4
5
6
7
ADJ
ADJ
5.0
5.0
BOOT
Name
GND
IADJ
SW
VIN
SS
FB
Current Limit Setting pin A resistor attached between this pin and GND can be used to set the current limit threshold.
Source input voltage
LM22679TJE-ADJ
Bootstrap input
System ground
LM22679TJE-5.0
LM22679TJ-ADJ
Feedback pin
LM22679TJ-5.0
Soft-start pin
Description
Order Number
Switch pin
Application Information
Attaches to the switch node
Input to the regulator. Operates from 4.5V to 42V
Provides the gate voltage for the high side NFET
Provide good capacitive decoupling between VIN and this pin
Pin can be left floating and internal setting will be default.
Inverting input to the internal voltage error amplifier.
An external capacitor and an internal 50 µA current source set the time constant for the rise
of the error amplifier reference. Pin can be left floating and internal soft-start will be default.
TO-263 THIN Exposed Pad
7-Lead Plastic TO-263 THIN Package
Package Type
NS Package Number TJ7A
2
NSC Package Drawing
TJ7A
30072302
1000 Units in Tape and Reel
1000 Units in Tape and Reel
250 Units in Tape and Reel
250 Units in Tape and Reel
Supplied As