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LTC4425IDDTRPBF Datasheet(PDF) 8 Page - Linear Technology

Part # LTC4425IDDTRPBF
Description  Linear SuperCap Charger with Current-Limited Ideal Diode and V/I Monitor
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4425IDDTRPBF Datasheet(HTML) 8 Page - Linear Technology

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LTC4425
8
4425p
BLOCK DIAGRAM
PSHUNT
NSHUNT
VOUT
VIN
VOUT/2
VMID
VSEL
PROG
RPROG
CBIG
CBIG
FB
R
LBA
R
LEAKAGE
BALANCER
RFB2
RFB1
2.7V 2.45V
1.11V
+
VOUT
VIN – 15mV
IDEAL DIODE
CONTROLLER
+
VOLTAGE CLAMP
CIRCUITRY
CONSTANT-VOLTAGE/
CONSTANT-CURRENT/
CONSTANT-TEMPERATURE
CHARGER CIRCUITRY
MPSW
1000
MPSNS
1
BANDGAP
REFERENCE
CHARGE CURRENT
PROFILE GENERATOR
250mV
150mV
VIN – VOUT
1X
10X
1.2V
1.11V
0.1V
OSCILLATOR
200ms
TIMER
PGOOD
COMPARATOR
PFI
COMPARATOR
+
VIN
VIN
VOUT + 250mV
RPF1
RPF2
PFI
EN
PFO
PFI_RET
+
PFC
GND
VIN – VOUT
COMPARATOR
4425 BD
1.2V
Figure 1. LTC4425 Block Diagram


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