LTC3554 Datasheet, PDF (2/36 Pages) Linear Technology – Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators

LTC3554
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2, 3)
V_BUS, V_OUT, BVIN
t < 1ms and Duty Cycle < 1% .................. –0.3V to 7V
Steady State............................................. –0.3V to 6V
BAT, NTC, CHRG, SUSP, PBSTAT,
ON, PGOOD, FB1, FB2.................................. –0.3V to 6V
PWR_ON1, PWR_ON2, STBY
HPWR, FSEL (Note 4) ......................–0.3V to V_CC + 0.3V
I_VBUS, I_BAT ...................................................................1A
I_SW1, I_SW2 (Continuous).......................................300mA
I_CHRG, I_PGOOD, I_PBSTAT ............................................75mA
Operating Temperature Range.................. –40°C to 85°C
Junction Temperature ........................................... 110°C
Storage Temperature Range................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
HPWR
FSEL
20 19 18 17 16
1
15 NTC
2
14 CHRG
PBSTAT 3
21
13 SW1
PGOOD 4
12 BVIN
ON 5
11 SW2
6 7 8 9 10
PD PACKAGE
20-LEAD (3mm × 3mm) PLASTIC UTQFN
T_JMAX = 110°C, θ_JA = 70°C/W
EXPOSED PAD (PIN 21) IS GND, AND MUST BE SOLDERED TO PCB GND
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3554EPD#PBF
LTC3554EPD#TRPBF FDPT
20-Lead (3mm × 3mm) Plastic UTQFN
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
POWER MANAGER ELECTRICAL CHARACTERISTICS
The l denotes specifications that apply over the full operating temperature range, otherwise specifications are at T_A = 25°C,
V_BUS = 5V, V_BAT = 3.8V, HPWR = SUSP = PWR_ON1 = PWR_ON2 = 0V, R_PROG = 1.74k, STBY = High
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
No-Load Quiescent Currents
I_BATQ
I_BATQC
Battery Drain Current
Battery Drain Current, V_BUS Available
I_OUT = 0 (Note 5)
V_BUS = 0V (Hard Reset)
V_BUS = 0V
V_BUS = 0V, PWR_ON1 = PWR_ON2 = 3.8V
V_BAT = V_FLOAT, Timer Timed Out
0.2
2
μA
3
5
μA
6.5
12
μA
5
8
μA
I_BUSQ
V_BUS Input Current
100mA, 500mA Modes
SUSP = 5V (Suspend Mode)
300
500
μA
15
30
μA
I_BVINQ
BVIN Input Current
Shutdown Input Current
One Buck Enabled, Standby Mode
Both Bucks Enabled, Standby Mode
One Buck Enabled
Both Bucks Enabled
V_BVIN = 3.8V, V_BUS = 0V (Note 8)
PWR_ON1 = STBY = 3.8V
PWR_ON1 = PWR_ON2 = STBY = 3.8V
PWR_ON1 = 3.8V, STBY = 0V
PWR_ON1 = PWR_ON2 = 3.8V, STBY = 0V
0.01
1
μA
1.5
3
μA
3
6
μA
18
35
μA
36
70
μA
Input Power Supply
V_BUS
I_BUS(LIM)
Input Supply Voltage
Total Input Current
HPWR = 0V (100mA)
HPWR = 5V (500mA)
4.35
5.5
V
l TBD
90
100
mA
l TBD 450
500
mA
3554p
2