MIC24051 Datasheet, PDF (2/34 Pages) Micrel Semiconductor – 12V, 6A High-Efficiency Buck Regulator

MIC24051
Package Type
MIC24051
28-Pin QFN (JL)
(Top View)
PVDD 1
PGND 2
NC 3
28 27 26 25
PGND
SW ⁴
PGND 5
PGND 6
SW
PGND 7
PGND 8
24 23
22 CS
21 PGND
20 BST
19 PVIN
18 PVIN
PVIN ^{17 PVIN}
16 PVIN
15 PVIN
9 10 11 12
13 14
Block Diagram
D1
2.2μF
VDD
PVDD
VIN
MIC24051
LDO
VDD
UVLO
FIXED TON
ESTIMATE
MODIFIED
TOFF
10k
EN
THERMAL
SHUTDOWN
CONTROL
LOGIC
TIMER
SOFT-START
SOFT
START
HSD
CL and ZC
DETECTION
PVDD
VDD
10k
PG
INTERNAL
RIPPLE
INJECTION
COMP
LSD
COMPENSATION
gm EA
8%
92%
VREF
0.8V
VIN
PVIN
BST
SW
CS
VIN
4.5V to 19V
4.7μF
x2
0.1μF
CBST
2.2μH
0.1μF
19.6k
R1
2.49k ^4.7nF
SGND
VOUT
1.8V/6A
100μF
PGND
FB
R2
2.00k
DS20005658A-page 2
 2016 Microchip Technology Inc.