ncp1589l ON Semiconductor, ncp1589l Datasheet - Page 2

• Manufacturer Part Number: ncp1589l
• Description: Ncp1589l Low Voltage Synchronous Buck Controller With Light Load Efficiency And Transient Enhancement
• Manufacturer: ON Semiconductor

COMP/EN
VORPM
R4
FB
9
8
7
C1
R1
0.8 V
(V
0.8 V
(V
ref
ref
+
−
)
)
R2
C2
R3
C3
OV and UV
MONITOR
PGOOD
FLAG
PGOOD
COMP/EN
FB
V
Figure 1. Typical Application Diagram
CC
COMP VPRM
RAMP
Figure 2. Detailed Block Diagram
= 4.5 V − 13.2 V
RPMSET
VCC
GND
±25% of V
FAULT
R9
−
+
VORPM
BOOT
http://onsemi.com
±10% of V
UG
LG
LX
R10
ref
R
S
V
2
ref
BST
PGOOD
PWM
OUT
= 4.5 V − 15 V
LATCH
UVLO
POR
LX
VORPM
Q
LX
10
FAULT
FAULT
V
IN
= 2.5 V − 19 V
+
−
AZCD logic
+
−
+
−
2 V
VOCP
VCC
6
3
4
1
2
5
VOUT
GND
VCC
BOOT
UG
LX
LG
GND