LTC3335_15 Datasheet, PDF (26/28 Pages) Linear Technology – Nanopower Buck-Boost DC/DC with Integrated Coulomb Counter

LTC3335
typical application
Backup Power Supply
3.6V
Li-Ion ⁺
BATTERY
100µH
I_PEAK = 100mA
10µF
SW1
BAT
PBAT
SW2
V_OUT
PV_OUT
LTC3335
IPK[2]
IPK[1]
DV_CC
IPK[0]
SCL
OUT[2]
SDA
OUT[1]
OUT[0]
EN
IRQ
PGOOD
MAIN SUPPLY
12V
3.3V SYSTEM SUPPLY
(3V)
3V IN BACKUP
(3.3V)
47µF
DC/DC
10k
10k
I²C
µP
12V
V
GND
3335 TA03
3.3V
3V
t
3.2V
LiFePO₄ +
BATTERY
Dual 5V/1.8V Regulator Where LTC3335 Counts Coulombs for Both Output Rails
47µH
I_PEAK = 250mA
10µF
SW1
BAT
PBAT
SW2
V_OUT
PV_OUT
LTC3335
IPK[2]
IPK[1]
IPK[0]
OUT[2]
OUT[1]
DV_CC
SCL
SDA
OUT[0]
EN
IRQ
PGOOD
GND
3335 TA04
47µF
10µF
V_IN
LTC3388-1
CAP
SW
V_IN2
V_OUT
EN
PGOOD
D1
D0
STBY
GND
100µH
10k
10k
5V
1.8V
47µF
I²C
µP
3335p
26
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