NCP5009 데이터 시트보기 (PDF) - ON Semiconductor
부품명
상세내역
제조사
NCP5009 Datasheet PDF : 17 Pages
| |||
NCP5008, NCP5009
DC/DC Converter Operation
The DC/DC converter operates with a boost structure
depicted in Figure 21, the load being supplied by the pulsed
current coming from the external inductor L1. The current
is monitored by the internal sense resistor Rsense to Set and
Reset the flip−flop U3 and U6 according to the comparators
U2 and U4 output state.
Ipeak_ref
Ivalley_ref
Vbat
+
U2
−
Vbat GND
+
U4
−
U5
GND
POR
Vbat
Vbat
+
U1
−
GND
U3
Vbat
Rsense
1R8
L1
L2
U6
U7
Q1
L1
22 mH
D5
MBR0520
D4
LED
D3
GND
LED
C2
2.2 mF/16 V
D2
LED
D1
LED
GND
GND
Figure 21. Basic DC/DC Boost Structure
http://onsemi.com
11
Share Link: 