LTC3576 Datasheet, PDF (2/48 Pages) Linear Technology – Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

LTC3576/LTC3576-1
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2, 3)
V_BUS, WALL (Transient) t < 1ms,
Duty Cycle < 1% .......................................... –0.3V to 7V
V_BUS, WALL (Static), BAT, V_IN1, V_IN2, V_IN3,
V_OUT, ENOTG, NTC, SDA, SCL, DV_CC,
RST3, CHRG ................................................ –0.3V to 6V
I_LIM0, I_ILIM1 ......... –0.3V to Max(V_BUS, V_OUT, BAT) + 0.3V
EN1, EN2, EN3 ...............................–0.3V to V_OUT + 0.3V
FBx (x = 1, 2, 3) ..............................–0.3V to V_INx + 0.3V
I_OVSENS...................................................................10mA
I_CLPROG ....................................................................3mA
I_CHRG, I_RST3............................................................50mA
I_PROG ........................................................................2mA
I_LDO3V3 ...................................................................30mA
I_SW1, I_SW2 (Continuous).......................................600mA
I_SW, I_SW3, I_BAT, I_VOUT (Continuous)..............................2A
Maximum Junction Temperature........................... 125°C
Operating Temperature Range.................. –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
CLPROG 1
LDO3V3 2
NTCBIAS 3
NTC 4
OVGATE 5
OVSENS 6
FB1 7
V_IN1 8
SW1 9
EN1 10
ENOTG 11
DV_CC 12
38 37 36 35 34 33 32
39
13 14 15 16 17 18 19
31 IDGATE
30 CHRG
29 PROG
28 ACPR
27 WALL
26 V_C
25 FB2
24 V_IN2
23 SW2
22 EN2
21 RST3
20 FB3
UFE PACKAGE
38-LEAD (4mm s 6mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3576EUFE#PBF
LTC3576EUFE#TRPBF 3576
38-Lead (4mm × 6mm) Plastic QFN
LTC3576EUFE-1#PBF
LTC3576EUFE-1#TRPBF 35761
38-Lead (4mm × 6mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_BUS = 5V, BAT = 3.8V, DV_CC = 3.3V, R_CLPROG = 3.01k, unless
otherwise noted.
SYMBOL
PARAMETER
PowerPath Switching Regulator—Step-Down Mode
V_BUS
Input Supply Voltage
I_VBUS(LIM)
Total Input Current
I_VBUSQ (Note 4) Input Quiescent Current
CONDITIONS
MIN
TYP
MAX
4.35
5.5
1× Mode
5× Mode
10× Mode
Low Power Suspend Mode
High Power Suspend Mode
l 82
l 440
l 800
l 0.32
l 1.6
90
100
472
500
880
1000
0.39
0.5
2.05
2.5
1× Mode
5×, 10× Modes
Low/High Power Suspend Modes
7
17
0.045
UNITS
V
mA
mA
mA
mA
mA
mA
mA
mA
3576f
2