LTC3225 Datasheet, PDF (6/12 Pages) Linear Technology – 150mA Supercapacitor Charger

LTC3225
SIMPLIFIED BLOCK DIAGRAM
C_FLY
9
V_IN
1
2
C⁺
C^–
4
SHDN
V_IN
SOFT-START AND
SHUTDOWN CONTROL
UVLO
THERMAL
PROTECTION
1.2V
RUN
i
PROG
7
R_PROG
3000i
CHARGE
PUMP
CLK
RUN/STOP
OSCILLATOR
POR
C_{OUT 10}
CX
3
C_TOP
GND
8
C_BOT
R1
1.2V
V_REF
1.088V
V_SEL
6
C1
V_REF – 2%
V_REF – 6%
V_REF – 7.2%
Figure 1
R2
+
C2
–
POR
PGOOD
5
3225 F01
3225f
6