NCP1421LEDEVB ON Semiconductor, NCP1421LEDEVB Datasheet - Page 3

• Manufacturer Part Number: NCP1421LEDEVB
• Description: EVAL BOARD FOR NCP1421LED
• Manufacturer: ON Semiconductor

Specifications of NCP1421LEDEVB

• Design Resources: NCP1421LEDEVB BOM NCP1421LEDEVB Schematic NCP1421LEDEVB Gerber Files
• Current - Output / Channel: 600mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 500 ~ 700 mV
• Voltage - Input: 3.6V
• Utilized Ic / Part: NCP1421
• Core Chip: NCP1421
• Topology: Boost
• No. Of Outputs: 1
• Output Current: 600mA
• Development Tool Type: Hardware - Eval/Demo Board
• Mcu Supported Families: NCP1421
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: NCP1421LED
• Other names: NCP1421LEDEVBOS

the NCP1422 drives one LED at 200 and 600 mA. An
Finally, Figure 5 shows a Focus/Flash application where
50 ms Pulse
ON
OFF
Q1
Figure 6. LED Current and V
D1
(CH2 = V
V
IN
R4a
R4b
C3
22 mF
= 3.6 V
Figure 5. 200/600 mA Focus/Flash Application
in
, ac−coupled @ 50 mV/div; CH4 = I
R2
R3
in
Enable
Signal
Ripple Voltage with 200/600 mA Focus/Flash Pulse
http://onsemi.com
AND8171/D
100k
R1
3
C1
220 nF
1
2
3
4
external MOSFET changes the R4 resistance to vary the
LED current. 50 ms pulses were used for this design.
FB
LBI/EN
LBO
REF
NCP1422
V
GND 6
BAT 5
OUT
LED
LX 7
U1
@ 200 mA/div)
8
L1
6.8 mH
22 mF
C2
V
IN