LTC3554 LINER [Linear Technology], LTC3554 Datasheet - Page 2

• Manufacturer Part Number: LTC3554
• Description: Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators
• Manufacturer: LINER [Linear Technology]

ABSOLUTE MAXIMUM RATINGS
LTC3554
(Notes 1, 2, 3)
V
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
I
I
I
Operating Temperature Range.................. –40°C to 85°C
Junction Temperature ........................................... 110°C
Storage Temperature Range ................... –65°C to 125°C
ORDER INFORMATION
LEAD FREE FINISH
LTC3554EPD#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
POWER MANAGER ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
No-Load Quiescent Currents
I
I
I
I
Input Power Supply
V
I
2
BATQ
BATQC
BUSQ
BVINQ
BUS(LIM)
BAT
SW1
CHRG
BUS
BUS
BUS
t < 1ms and Duty Cycle < 1% .................. –0.3V to 7V
Steady State ............................................. –0.3V to 6V
l
.............................................................................1A
, I
= 5V, V
, V
, I
denotes specifi cations that apply over the full operating temperature range, otherwise specifi cations are at T
SW2
OUT
PGOOD,
, BVIN
(Continuous) .......................................300mA
BAT
PARAMETER
Battery Drain Current
Battery Drain Current, V
V
BVIN Input Current
Input Supply Voltage
Total Input Current
BUS
Shutdown Input Current
One Buck Enabled, Standby Mode
Both Bucks Enabled, Standby Mode
One Buck Enabled
Both Bucks Enabled
= 3.8V, HPWR = SUSP = PWR_ON1 = PWR_ON2 = 0V, R
I
PBSTAT
Input Current
TAPE AND REEL
LTC3554EPD#TRPBF
............................................75mA
BUS
Available
http://www.linear.com/leadfree/
PART MARKING
FDPT
CONDITIONS
I
V
100mA, 500mA Modes
SUSP = 5V (Suspend Mode)
V
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
HPWR = 0V (100mA)
HPWR = 5V (500mA)
OUT
http://www.linear.com/tapeandreel/
BAT
BVIN
CC
V
V
V
BUS
BUS
BUS
= 0 (Note 5)
= V
+ 0.3V
= 3.8V, V
= 0V (Hard Reset)
= 0V
= 0V, PWR_ON1 = PWR_ON2 = 3.8V
FLOAT
, Timer Timed Out
BUS
PIN CONFIGURATION
= 0V (Note 8)
PROG
PACKAGE DESCRIPTION
20-Lead (3mm × 3mm) Plastic UTQFN
EXPOSED PAD (PIN 21) IS GND, AND MUST BE SOLDERED TO PCB GND
= 1.87k, STBY = High, unless otherwise noted.
PBSTAT
PGOOD
HPWR
FSEL
20-LEAD (3mm × 3mm) PLASTIC UTQFN
ON
T
1
2
3
4
5
JMAX
20 19 18 17 16
6
l
l
= 110°C, θ
PD PACKAGE
TOP VIEW
7
21
4.35
MIN
400
8
80
JA
9 10
= 70°C/W
15
14
13
12
11
TYP
0.01
300
450
0.2
6.5
1.5
15
18
36
90
3
5
3
TEMPERATURE RANGE
–40°C to 85°C
NTC
CHRG
SW1
BVIN
SW2
A
MAX
500
500
= 25°C,
100
5.5
12
30
35
70
2
5
8
1
3
6
UNITS
3554f
mA
mA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
V