Datasheet

ADP1874/ADP1875 Data Sheet
Rev. A | Page 18 of 44
ADP1874/ADP1875 BLOCK DIGRAM
09347-063
DRVH
GND
IREV
COMP
ADP1874/ADP1875
C
R (TRIMMED)
VREG
t
ON
TIMER
t
ON
= 2RC(V
OUT
/V
IN
)
I
SW
INFORMATION
SW FILTER
STATE
MACHINE
TON
BG_REF
IN_PSM
IN_SS
PWM
HS_O
HS
SW
LS
LS_O
IREV
LEVEL
SHIFT
HS
VREG
LS
VREG
300kΩ
800kΩ
8kΩ
SW
DRVL
PGND
BST
VIN
PSM
REF_ZERO
IN_HICC
SS
COMP
ERROR
AMP
SS_REF
0.6V
LOWER
COMP
CLAMP
REF_ZERO
CS
AMP
PWM
FB
TRACK
COMP
VREG
VREG_IN
I
SS
SS
0.4V
ADC
RES DETECT AND
GAIN SET
CS GAIN SET
BIAS BLOCK
AND REFERENCE
REF
LDO
PRECISION
ENABLE
EN_REF
TO ENABLE
ALL BLOCKS
EN
RES
530mV
690mV
FB
600mV
PGOOD
Figure 64. ADP1874/ADP1875 Block Diagram