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| LTC3125_15 Datasheet, PDF (7/18 Pages) Linear Technology – 1.2A Synchronous Step-Up DC/DC Converter with Input Current Limit | |||
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BLOCK DIAGRAM
VIN
CIN
L1
PROG
3
RPROG
SHDN
6
4
5
VIN
CS
8
SW
RSENSE
gm
INPUT CURRENT
SENSE AMP
VSEL
VBEST
VB
ANTI-RING
SHUTDOWN SD
4M
VREF
VBG
VREF GOOD
CLK
OSC
THERMAL TSD
SHUTDOWN
GATE DRIVE
AND
ANTI-CROSS
CONDUCTION
LOGIC
IPK
COMP
IPK
ICLMP
COMP
ICLMP
IZERO
CLK
WAKE
MODE
CONTROL
VSEL
WELL-SWITCH
â+
IZERO
COMP
SLOPE COMP
AVERAGING
CIRCUIT
EXPOSED
PAD
9
VREF
GND
1
+
âgm
IAVG
ERROR
AMP
SOFT START
VCLAMP
LTC3125
VOUT
7
VOUT
R2
COUT
VREF
FB
2
R1
3125 BD
3125fa
7
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