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Número de pieza
componentes Descripción
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MAX16821AATI
High-Power Synchronous HBLED Drivers with Rapid Current Pulsing
Maxim Integrated
MAX16821AATI Datasheet PDF : 24 Pages
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High-Power Synchronous HBLED
Drivers with Rapid Current Pulsing
V
CC
EN
0.5 x V
CC
IN
+5V LDO
UVLO
POR
TEMP SEN
V
CC
TO INTERNAL CIRCUIT
I.C.
CLP
CSP
A
V
= 34.5
CSN
V
CM
OUTV
RT/SYNC
CLKOUT
DIFF
SENSE-
SENSE+
EAOUT
EAN
A
V
= 4
V
CLAMP
LOW
CLK
OSCILLATOR
RAMP
GENERATOR
V
CM
DIFF
AMP
g
m
V
CLAMP
HIGH
2 x f
S
ERROR
AMP
0.12 x V
REF
V
REF
= 0.6V
SOFT-
START
V
CM
PWM
COMPARATOR
OVP
COMPARATOR
ENABLE
UVLO
S
Q
MUX
R
Q
V
TH
MAX16821A
MAX16821B
MAX16821C
BST
DH
LX
V
DD
DL
PGND
MODE
OVI
SGND
Figure 1. Internal Block Diagram
_______________________________________________________________________________________ 9
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