LTC3577_15 Datasheet, PDF (24/54 Pages) Linear Technology – Highly Integrated 6-Channel Portable PMIC

LTC3577/LTC3577-1
OPERATION
HV_IN
7.5V TO 30V
(TRANSIENTS
TO 60V)
1
V_IN
4.7μF
60V
7
BOOST
8
SW
LT3653
324k _{4 ILIM}
9
GND
I_SENSE ⁶
5
V_OUT
V_C HVOK
32
HIGH VOLTAGE
BUCK CIRCUITRY
0.1μF
10V
4.7μH
DFLS240L
UP TO
1.2A
42 4 41
V_C WALL ACPR
V_OUT
39
LTC3577 IDGATE ³⁷
BAT ³⁸
V_OUT
C_OUT
Si2333DS
(OPT)
+
BAT
Li-Ion
3577 F05
Figure 5. LT3653 Buck Control Using V_C
5.0
4.5
4.0
3.5
3.0
2.5
2.5
I_O = 0.0A
I_O = 0.75A
I_O = 1.5A
BAT
3
3.5
4
4.5
BAT (V)
3577 F06
Figure 6. V_OUT Voltage vs Battery Voltage (LT3480)
5.0
4.5
4.0
3.5
3.0
2.5
2.5
I_O = 0.0A
I_O = 0.6A
BAT
3
3.5
4
4.5
BAT (V)
3577 F07
Figure 7. V_OUT Voltage vs Battery Voltage (LT3505)
24
3577fa