LM3489EVAL National Semiconductor, LM3489EVAL Datasheet - Page 4

• Manufacturer Part Number: LM3489EVAL
• Description: BOARD EVALUATION LM3489
• Manufacturer: National Semiconductor

Specifications of LM3489EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 500mA
• Voltage - Input: 7 ~ 28V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: LM3489
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -
• Frequency - Switching: -

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Demonstration Board Quick Setup Procedures
Demonstration Board Performance Characteristic
Output Voltage and Current Limit Setting
Output Voltage Regulation
Output Short Current Limit
Output Voltage Ripple
Step
Output Voltage
Output Current
Input Voltage
Description
1
2
3
4
5
6
7
Efficiency
Connect power supply to VIN terminals
Connect load to the VOUT terminals
SD jumper should left open for normal operation
-Short this jumper to shutdown
Set V
Apply 500mA load and check V
Short output terminals and check short circuit current with an ammeter
Short SD jumper to check for shutdown function
IN
= 12V, with no load applied, check V
V
OUT(Ripple)
Symbol
∆V
I
LIM-SC
V
I
V
OUT
OUT
OUT
IN
Description
OUT
again
All V
(I
OUT
20MHz Bandwidth limit
IN
4
OUT
= 100mA to 500mA)
and IOUT conditions
Condition
V
V
with voltmeter
IN
IN
= 28V
= 7V
Min
3.2
1.5
88
73
7
0
-
I
OUT
V
Typical
IN
3.3V
3.3V
range 0A to 500mA
3.3
0.5
1.4
Nominal 1.4A
12
range 7V to 28V
-
Notes
±
±
100 mV
100 mV
20191514
Max
3.4
1.5
28
40
90
80
1
mV
Unit
%
%
V
V
A
A
P-P