LTC3576-1_15 Datasheet, PDF (43/48 Pages) Linear Technology – Switching Power Manager with USB On-the-Go Triple Step-Down DC/DCs

LTC3576/LTC3576-1
TYPICAL APPLICATIONS
High Efficiency USB/Automotive Power Manager with Overvoltage Protection,
Reverse-Voltage Protection, Low-Battery Start-Up and USB On-the-Go
AUTOMOTIVE
FIREWIRE, ETC.
M1
4.7μF
4 _VIN
2
BOOST
68nF ^150k
SW ³
5 _RUN/SS LT3480
40.2k _{10 RT}
8
FB
PG V_C GND BD SYNC
7
11 1 6
9
L1
0.47μF ^6.8μH
D1
499k
22μF
100k
USB,
WALL
ADAPTER
M4
USB
ON-THE-GO
26 27 28
L2
M3
35
V_C WALL ACPR ₃₆ 3.3μH
M2
C1
34 ^VBUS
SW
33
22μF
0805
V_BUS
V_OUT
31
IDGATE
C3
M5
22μF
2.2k
R1
6.2k
5 _OVGATE
6
32
BAT
+
0805
OVSENS
Li-Ion
TO OTHER
LOADS
100k
R2
100k
T
1k
C2
0.1μF
0402
3
NTCBIAS
4
NTC
29
PROG
1
CLPROG
3.01k
CHRG ³⁰
8
V_IN1
9
SW1
L3
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
L4
4.7μH
25
FB2
1.02M
365k
16
V_IN3
L5
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
C1, C3: TAYIO YUDEN JMK212BJ226MG
D1: DIODES INC. DFLS240L
L1: TAIYO YUDEN NP06DZB6R8M
L2: COILCRAFT LPS4018-332LM
L3, L4: TOKO 1098AS-4R7M
3576 TA03
L5: TOKO 1098AS-2R0M
M1,M2,M4, M5: SILICONIX Si2333DS
M3: ON SEMICONDUCTOR NTLJS4114N
R1: 1/10W RESISTOR
R2: CURVE 1
3576fb
43