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ADP1853ACPZ-R7 Fiches technique(PDF) 7 Page - Analog Devices

No de pièce ADP1853ACPZ-R7
Description  Synchronous, Step-Down DC-to-DC Controller
PDF  28 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

ADP1853ACPZ-R7 Fiches technique(HTML) 7 Page - Analog Devices

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Data Sheet
ADP1853
Rev. 0 | Page 7 of 28
SIMPLIFIED BLOCK DIAGRAM
Figure 2.
BST
PGND
+
–
+
–
+
–
+
–
FB
OV_TH
UV_TH
PGOOD
CURRENT SENSE
AMPLIFIER
DH
DL
ILIM
SW
VREF = 0.6V
+
+
–
ERROR
AMPLIFIER
FB
COMP
SS
PWM
COMPARATOR
SLOPE COMPENSATION
AND RAMP GENERATOR
CURRENT-LIMIT
CONTROL
RAMP
50µA
OV
+
TRK
CS GAIN
DRIVER LOGIC
CONTROL AND
STATE
MACHINE
OVER_LIM
PULSE SKIP
OVER_LIM
LDO
LOGIC
EN
VIN
UVLO
OSCILLATOR
FREQ
SYNC
REF
VCCO
OV
UV
0.6V
THERMAL
SHUTDOWN
AGND
CS
FAULT
OV
LOGIC
OVER_LIM
OV
EN
EN_SW
LOGIC
UV
3kΩ
0.9V
DCM
*0 (ZERO) GAIN IS FOR VOLTAGE MODE WITH RAMP FROM 0.7V TO 2.2V.
ZERO
CROSS
DETECT
12.5kΩ
AV = 0,* 3, 6, 12
VCCO
CLK
EN_SW
1MΩ
–
+
CLKOUT
VCCO
VCCO
VCCO
VCCO
SLAVE
SL_TH
FB
SLAVE
0.6V
6.5µA



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