LTC3576-1_15 Datasheet, PDF (42/48 Pages) Linear Technology – Switching Power Manager with USB On-the-Go Triple Step-Down DC/DCs

LTC3576/LTC3576-1
TYPICAL APPLICATIONS
Minimum Parts Count USB Power Manager with Low-Battery Start-Up and USB On-the-Go
USB,
WALL ADAPTER
USB
ON-THE-GO
C1
10μF
0805
C2
1k
0.1μF
0402
26 27 28
35
V_C
34 ^VBUS
V_BUS
5
OVGATE
6
OVSENS
3
NTCBIAS
4
NTC
29
PROG
1
CLPROG
3.01k
WALL
ACPR ₃₆
SW
33
V_{OUT 31}
IDGATE
32
BAT
8
V_IN1
9
SW1
7
FB1
LTC3576/LTC3576-1
L1
3.3μH
+
Li-Ion
C3
22μF
0805
L2
4.7μH
1.02M
10pF
324k
10μF
TO OTHER
LOADS
1.76V TO 3.3V
400mA
1μF
MEMORY
2
LDO3V3
1μF
12
DV_CC
PUSHBUTTON
MICROCONTROLLER
30 _CHRG
13, 14
I²C
C1: MURATA GRM21BR7A106KE51L
C3: TAIYO YUDEN JMK212BJ226MG
L1: COILCRAFT LPS4018-332LM
L2, L3: TOKO 1098AS-4R7M
L4: TOKO 1098AS-2R0M
10
EN1
22
EN2
19 _EN3
11
ENOTG
37
38 ^ILIM0
I_LIM1
24
V_IN2
23
SW2
L3
4.7μH
25
FB2
1.02M
365k
16
V_IN3
L4
17 ^2μH
SW3
751k
20
FB3
806k
RST3 ²¹
1.61V TO 3.03V
400mA
I/O
10pF
1μF
10μF
MICROPROCESSOR
0.8V TO 1.51V
1A
CORE
POR
10pF
1μF
10μF
10k
3576 TA02
3576fb
42