NCP5425_06 ONSEMI [ON Semiconductor], NCP5425_06 Datasheet - Page 7

• Manufacturer Part Number: NCP5425_06
• Description: Dual Synchronous Buck Controller
• Manufacturer: ONSEMI [ON Semiconductor]

COMP1
COMP2
V
R
V
V
REF2
V
OSC
FB1
FB2
CC
OSCILLATOR
GENERATOR
REFERENCE
CURRENT
AND BIAS
RAMP
+
−
AND
+
4.2 V
4.0 V
−
−
+
UVLO
0.8 V
IRAMP1
IRAMP2
CLK1
CLK2
LNDM
3.1 V
0.8 V
Low noise disable mode
(pull R
3.1 V
3.1 V
+
+
−
−
OSC
EA1
EA2
high to activate)
UVLO
UVLO
REFERENCE
−
−
+
+
COMP2
CLAMP
Figure 2. Block Diagram
http://onsemi.com
COMP1 CLAMP
REFERENCE
RAMP1
RAMP2
NCP5425
+
+
3.1 V
7
or dual
Single
output
mode
S/D
0.3 V
0.3 V
+
+
−
−
−
−
PWM
COMP1
PWM
COMP2
3.1 V
RAMP1
3.1 V
CLK1
CLK2
MODE
3.1 V
R
R
S
S
Dominant
Dominant
RAMP2
Reset
Reset
IRAMP1
Q
Q
Q
Q
3.1 V
OC1
OC2
IRAMP2
LNDM
LNDM
LNDM
LNDM
−
−
+
+
70 mV
70 mV
BST
V
V
+
+
CC
CC
−
−
BST
IS+1
IS−1
IS+2
IS−2
GATE(H)2
GATE(H)1
GATE(L)1
GATE(L)2
GND