NCP690MNADT2GEVB ON Semiconductor, NCP690MNADT2GEVB Datasheet - Page 2

• Manufacturer Part Number: NCP690MNADT2GEVB
• Description: EVAL BOARD FOR NCP690MNADT2G
• Manufacturer: ON Semiconductor

Specifications of NCP690MNADT2GEVB

• Design Resources: NCP690MNADT2GEVB BOM NCP690MNADT2GEVB Gerber Files NCP690 Demo Brd Schematic
• Channels Per Ic: 1 - Single
• Voltage - Output: 1.25 ~ 5 V
• Current - Output: 1A
• Regulator Type: Positive Adjustable
• Board Type: Fully Populated
• Utilized Ic / Part: NCP690
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Operating Temperature: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: NCP690MNADT2G
• Other names: NCP690MNADT2GEVBOS

Required Equipment:
2 x Voltmeters
2 x Ampere meters
DC Power Supply – 6V, 1A
Electronic Load
Required Components:
R1, R2 - Feedback Resistors required to set the Output Voltage.
Test Procedure:
The feedback resistors R1 and R2 have to be soldered before any measurement could be started (Figure 1).
Please use the following equation to determine the appropriate value of feedback resistors to be soldered on the
demoboard:
The table below shows the example values of R1, R2 resistors for some typical Output Voltages:
06-MAY-09
V
OUT
=
. 1
25
1 (
+
R
R
1
2
)
Desired Output
Voltage [V]
1.50
1.80
2.50
2.70
3.30
3.60
5.00
Test Procedure for the NCP690, 1A, Adjustable LDO
Feedback Resistors
R1 [k Ω ]
1.6
9.1
3.9
6.8
15
30
2
R2 [k Ω ]
3.6
9.1
3.3
9.1
3.6
10
10
Set Output
Voltage [V]
Page 2 of 3
1.5000
1.8055
2.5000
2.7300
3.3104
3.6111
5.0000
Output Voltage
Error [mV]
+ 27.3
+ 10.4
+ 11.1
+ 5.5
0
0
0
Resistor Divider
Current I
DIV
[µA]
125
347
137
378
137
347
125
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