LTC3576-1_15 Datasheet, PDF (46/48 Pages) Linear Technology – Switching Power Manager with USB On-the-Go Triple Step-Down DC/DCs

LTC3576/LTC3576-1
TYPICAL APPLICATIONS
High Efficiency USB/Wall Power Manager with Dual Overvoltage Protection,
Reverse-Voltage Protection, Low-Battery Start-Up and USB On-The-Go
5V WALL
ADAPTER
USB
M1
M3
C1
22μF
0805
M5
USB
ON-THE-GO
35
5
27 28
OVGATE WALL ACPR
L1
36 ^3.3μH
M2
M4 C2
34 ^VBUS
SW
33
TO OTHER
LOADS
22μF
0805
R1
6.2k
V_BUS
26
V_C
6
V_{OUT 31}
IDGATE
32
BAT
C4
M6
22μF
2.2k
0805
+
OVSENS
Li-Ion
100k
R2
100k
T
1k
C3
0.1μF
0402
3
NTCBIAS
4
NTC
29
PROG
1
CLPROG
3.01k
CHRG ³⁰
8
V_IN1
9
SW1
L2
4.7μH
7
FB1
LTC3576/LTC3576-1
1.02M
324k
1.76V TO 3.3V
400mA
10pF
1μF
10μF
MEMORY
2
LDO3V3
12
1μF
DV_CC
PUSHBUTTON
MICROCONTROLLER
13, 14
I²C
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
1.61V TO 3.03V
400mA
I/O
10pF
1μF
10μF
MICROPROCESSOR
0.8V TO 1.51V
1A
CORE
POR
10pF
1μF
10μF
10k
RST3 ²¹
3576 TA07
C1, C2, C4: TAYIO YUDEN JMK212BJ226MG
L1: COILCRAFT LPS4018-332LM
L2, L3: TOKO 1098AS-4R7M
L4: TOKO 1098AS-2R0M
M1, M2, M5, M6: SILICONIX Si2333DS
M3, M4: FAIRCHILD FDN327S
R1: 1/10W RESISTOR
R2: CURVE 1
3576fb
46