NB675 –24V, HIGH CURRENT SYNCHRONOUS BUCK CONVERTER
TYPICAL APPLICATION
4.7ꢀ
VIN
4.7-22V
220nF
1.2μH
VDDQ
1.35V/10A
VIN
EN
BST
SW
FB
NS
499
220pF
499kꢀ
22μF
22μF
100kꢀ
22μFx3
Ceramic
Cap
1
EN 2
PG
82kꢀ
NB675
VDDQSEN
100kꢀ
1μF
VCC
VINLDO
VTT
0.675V/2A
VTT
AGND
PGND
10μF
10μF
VTTREF VTTSEN
220nF
Figure 14 — Typical Application Circuit with Low ESR Ceramic Output Capacitor
VIN=5-22V, VOUT=1.35V, IOUT=10A
4.7ꢀ
VIN
4.7-22V
220nF
1.2μH
VDDQ
1.35V/10A
VIN
EN
BST
SW
FB
100kꢀ
499kꢀ
22μF
22μF
+
330μF
1
POSCAP
82kꢀ
EN 2
PG
NB675
VDDQSEN
VINLDO
100kꢀ
1μF
VCC
VTT
0.675V/2A
VTT
AGND
PGND
10μF
10μF
VTTREF VTTSEN
220nF
Figure 15 — Typical Application Circuit with Large ESR POSCAP Output Capacitor
VIN=5-22V, VOUT=1.35V, IOUT=10A
NB675 Rev. 1.0
1/14/2013
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