NCP1521UEVB ON Semiconductor, NCP1521UEVB Datasheet - Page 4

• Manufacturer Part Number: NCP1521UEVB
• Description: EVAL BOARD FOR NCP1521U
• Manufacturer: ON Semiconductor

Specifications of NCP1521UEVB

• Design Resources: NCP1521UEVB BOM NCP1521UEVB Schematic NCP1521UEVB Gerber Files
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 0.9 ~ 3.3 V
• Current - Output: 600mA
• Voltage - Input: 3.6V
• Regulator Topology: Buck
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: NCP1521
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: NCP1521U
• Other names: NCP1521UEVBOS

NCP1521B – TEST PROCEDURE
Equipment needed
•
•
•
Test
NCP1521B – BILL OF MATERIAL
Designator
VIN, VOUT
1. Jumper ENABLE should be open.
2. Jumper SELECT should be closed to 1.2 V.
3. Set the power supply to 3.6 V and the current limit of at least 800 mA.
4. Connect the power supply connector to connectors V
5. Close ENABLE connector. The DC current measurement on V
6. Measure the output voltage between V
7. Remove the ENABLE jumper. The DC current measurement on V
TPVOUT
ENABLE
SELECT
Power supply
Digital Volt Meter
Digital Amp Meter
R1, R2
TPVIN,
GND1,
TPEN,
GND2
TPLX,
PCB
be around 0.3 mA.
U1
C1
C2
C3
R3
R4
L1
Qty
1
1
1
1
2
1
1
1
4
1
1
2
4
1
Jumper for GND
Test point type 3
3x2 Pin Jumper
IC, Converter,
50.8mm x 1.0
3 Pin Jumper
SMD resistor
SMD resistor
SMD resistor
Description
Connector
50.8mm x
capacitor
capacitor
capacitor
4 Layers
Ceramic
Ceramic
Ceramic
Inductor
Header
Header
DC/DC
mm
4.7 mF, 10 V,
10 mF, 6,3 V,
18 pF, 50 V,
OUT
2.2 mH
Value
COG
510k
330k
240k
X5R
X5R
NA
NA
NA
NA
NA
NA
NA
+ and V
http://onsemi.com
OUT
Toler-
IN
ance
10%
10%
30%
NA
5%
1%
1%
1%
NA
NA
NA
NA
NA
NA
− connectors. You should see around 1.2 V voltage operation.
+ and V
4
10.16mm
f1.60mm
2.54mm
2.54mm
TSOP5
IN
UDFN
IN
Foot-
print
0805
0603
0603
0603
0603
0603
1210
NA
NA
−. The DC current measurement on V
line should be around 40 mA.
IN
line should be back around 0.3 mA.
ON Semiconductor
Kontek Comatel
Molex / Waldom
Molex / Waldom
Molex / Waldom
Manufacturer
TYCO/AMP
TYCO/AMP
Keystone
Cambion
Coilcraft
Harwin
TDK
TDK
TDK
Any
std
std
std
TLS−P−003−A−0207−BR
TLS−P−004−A−1106−BR
160−1724−02−05−00
C1608C0G1H180
C1608X5R1A475
C1608X5R0J105
LPS3008−222NL
3110014000500
4731955180470
Manufacturer
Part Number
NCP1521BU
5−826629−0
90120−0160
90131−0140
90120−0160
NCP1521B
D3082−01
5010
IN
std
std
std
line should