Datasheet

LTC3553
2
3553fb
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
V
BUS
, V
OUT
t < 1ms and Duty Cycle < 1% .................. –0.3V to 7V
Steady State ............................................. –0.3V to 6V
BAT, NTC, CHRG, SUSP, PBSTAT,
ON, BUCK_FB, LDO_FB ................................ –0.3V to 6V
BUCK_ON, LDO_ON, STBY, SEQ, HPWR,
BVIN, V
INLDO
, LDO (Note 4) .............–0.3V to V
CC
+ 0.3V
I
BAT
.............................................................................1A
I
SW
(Continuous) .................................................300mA
I
LDO
(Continuous) ................................................175mA
I
CHRG
, I
PBSTAT
.........................................................75mA
Operating Temperature Range.................. –40°C to 85°C
Junction Temperature ........................................... 110°C
Storage Temperature Range ................... –65°C to 125°C
(Notes 1, 2, 3)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3553EUD#PBF LTC3553EUD#TRPBF LFYB 20-Lead (3mm × 3mm) Plastic QFN –40°C to 85°C
LTC3553EPD#PBF LTC3553EPD#TRPBF FHST 20-Lead (3mm × 3mm) Plastic UTQFN –40°C to 85°C (OBSOLETE)
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:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
POWER MANAGER ELECTRICAL CHARACTERISTICS
The l denotes specifi cations that apply over the full operating temperature range, otherwise specifi cations are at T
A
= 25°C (Note 2),
V
BUS
= 5V, V
BAT
= 3.8V, HPWR = SUSP = BUCK_ON = LDO_ON = 0V, R
PROG
= 1.87k, STBY = high, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
No-Load Quiescent Currents
I
BATQ
Battery Drain Current (Note 5)
Buck and LDO Shutdown, Hard Reset
Buck and LDO Shutdown
Buck and LDO Enabled, Standby Mode
Buck and LDO Enabled
Buck Enabled, LDO Shutdown
LDO Enabled, Buck Shutdown
I
OUT
= I
SW
= I
LDO
= 0
V
BUS
= 0V, Hard Reset
V
BUS
= 0V
V
BUS
= 0V, BUCK_ON = LDO_ON = STBY = 3.8V
V
BUS
= 0V, BUCK_ON = LDO_ON = 3.8V,
STBY = 0V
V
BUS
= 0V, BUCK_ON = 3.8V, LDO_ON = 0V
STBY = 0V
V
BUS
= 0V, LDO_ON = 3.8V, BUCK_ON = 0V,
STBY = 0V
0.2
3
8
16
6.5
16
2
5
16
35
15
35
µA
µA
µA
µA
µA
µA
I
BATQC
Battery Drain Current, V
BUS
Available V
BAT
= V
FLOAT
, Timer Timed Out 5 8 µA
I
BUSQ
V
BUS
Input Current 100mA, 500mA Modes
Charger On
Timer Timed Out
SUSP = 5V (Suspend Mode)
300
150
15
500
350
30
µA
µA
µA
20 19 18 17 16
7 8
TOP VIEW
21
GND
UD PACKAGE
20-LEAD (3mm × 3mm) PLASTIC QFN
9
10
HPWR
SEQ
PBSTAT
ON
LDO_ON
NTC
CHRG
SW
BVIN
V
INLDO
V
BUS
SUSP V
OUT
BAT PROG
STBY
BUCK_ON
BUCK_FB
LDO_FB
LDO
12
11
13
14
15
4
5
3
2
1
6
T
JMAX
= 110°C, θ
JA
= 70°C/W
EXPOSED PAD (PIN 21) IS GND, AND MUST BE SOLDERED TO PCB GND