ADP1882 Analog Devices, ADP1882 Datasheet - Page 18

• Manufacturer Part Number: ADP1882
• Description: Synchronous Current-Mode Buck Controller with Constant On-time and 0.8 V Reference Voltage
• Manufacturer: Analog Devices

ADP1882/ADP1883
ADP1882/ADP1883 BLOCK DIAGRAM
COMP/EN
VDD
FB
C
SS
I
SS
ENABLE BLOCK
PRECISION
SS_REF
REF_ZERO
LOWER
CLAMP
COMP
0.8V
REF_ZERO
ERROR
AMP
SS
COMP
BIAS BLOCK
AND REF
TO ENABLE
ALL BLOCKS
GND
PWM
PFM
AMP
CS
Figure 65. Block Diagram
CS GAIN SET
Rev. 0 | Page 18 of 40
I
COMP
REV
t
BG_REF
PSM
IN_SS
PWM
I
REV
ON
t
ON
MACHINE
-TIMER
STATE
VDD
DH_LO
DL_LO
DRVH
DRVL
SW
SW
INFORMATION
C
ADC
LEVEL
SHIFT
SW-FILTER
V
DD
R (TRIMMED)
RES DETECT
ADP1882/ADP1883
GAIN SET
0.4V
HS
LS
AND
t
ON
= 2RC (V
VREG
800kΩ
OUT
/V
8kΩ
IN
300kΩ
)
VIN
BST
DRVH
SW
DRVL
PGND