LTC3226_12 Datasheet, PDF (8/16 Pages) Linear Technology – 2-Cell Supercapacitor Charger

LTC3226
BLOCK DIAGRAM
V_IN
2.5V TO 5.5V
V_IN
13
PFO
2
R_PF1
PFI
3
–
R_PF2
+
1.2V
EN_CHG
8
9 ^PROG
R_PROG
EXTERNAL PFET
5
GATE
–+
15mV
+–
IDEAL DIODE
CONTROLLER
LDO
0.8V
DELAY
LDO_FB
4
RST_FB
6
0.74V
RST
7
V_OUT
C_OUT
R_FB1
R_FB2
1x/2x MODE
CHARGE PUMP
1V
2.65V CLAMP/
–
BALANCER
+
1.11V
CPO
16
VMID
14
CPO_FB
10
CAPGOOD
11
C_SC
R_CP1
R_CP2
GND C⁺ C^–
17 15 12
3226 F01
2.2μF
Figure 1. LTC3226 Block Diagram
3226fa
8