LTC3428 Datasheet, PDF (5/12 Pages) Linear Technology – 4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN

BLOCK DIAGRA
LTC3428
FB
FB
ERROR AMPLIFIER/SOFT-START
V_IN
–
V_C
+ 1.243V
I_SENB
RAMP/
SLOPE COMP
CLK B
OSCILLATOR
SHDN
V_C
AGND
CLK A
RAMP/
SLOPE COMP
SHUTDOWN
I_SENA
5pF
–
–
PWM
COMP
+
CHANNEL B
CHANNEL A
CURRENT
LIMIT
I_SENB
PWM
LOGIC
DRIVER
TSD
+
–
PWM
COMP
–
PWM
LOGIC
DRIVER
CURRENT
LIMIT
I_SENA
V_OUT
SWB
PGNDB
SWA
PGNDA
3428 BD
3428f
5