LTC1558-5 Linear Technology, LTC1558-5 Datasheet - Page 2

• Manufacturer Part Number: LTC1558-5
• Description: Backup Battery Controller with Programmable Output
• Manufacturer: Linear Technology

ABSOLUTE
(Note 1)
Terminal Voltages
All Other Pins .................................. – 0.3V to V
Input Currents (SW) ........................................... 500mA
PACKAGE/ORDER
LTC1558-3.3/LTC1558-5
Consult factory for Industrial and Military grade parts.
2
ELECTRICAL CHARACTERISTICS
SYMBOL
Battery Backup Switching
V
V
V
I
I
I
I
V
V
V
V
V
VCC
BAT
BAT(SHDN)
VCC(SHDN)
CC
BAT
REF
BAK(ON)
BST(ON)
BAK(OFF)
BST(OFF)
LOBAT
V
V
SW ...................................................................... 14V
CC ..........................................................................................
BAK
GND
CTL
, BACKUP ..................................................... 12V
SW
FB
T
JMAX
PARAMETER
Operating Voltage Range
Backup Battery Cell Voltage
Internal Reference Voltage
Quiescent Supply Current (Note 2)
Peak Inductor Current (Backup Mode)
Battery Standby Current
Supply Current During Shutdown (Note 3)
Backup Request Trip Point
Boost Converter Assertion Trip Point
Backup Deassertion Trip Point
Boost Converter Deassertion Trip Point
Low V
1
2
3
4
8-LEAD PLASTIC SO
= 125 C,
S8 PACKAGE
BAT
TOP VIEW
Detect (Note 3)
W
MAXIMUM
JA
= 130 C/ W
8
7
6
5
V
V
BACKUP
RESET
W W
BAK
CC
INFORMATION
U
RATINGS
S8 PART MARKING
LTC1558CS8-3.3
LTC1558CS8-5
ORDER PART
W
NUMBER
155833
15585
U
CONDITIONS
LTC1558-3.3
LTC1558-5
Boost Converter in Low Current Mode (Note 7)
Boost Converter in High Current Mode (Note 7)
V
Voltage at V
Voltage at V
Voltage at V
Voltage at V
CC
CC
= 0V
+ 0.3V
V
U
BAT
FB
FB
FB
FB
6V
Relative to V
Relative to V
Relative to V
Relative to V
= 1.2V, T
V
Operating Ambient Temperature Range ....... 0 C to 70 C
Junction Temperature .......................................... 125 C
Storage Temperature Range .................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................... 300 C
16-LEAD PLASTIC SSOP
BAK
A
PGND
SHDN
REF
REF
REF
REF
GN PACKAGE
GND
= 0 C to 70 C unless otherwise noted.
CTL
SW
SW
Output Current ................... Short-Circuit Protected
NC
T
T
FB
JMAX
JMAX
1
2
3
4
5
6
7
8
= 125 C,
= 125 C,
TOP VIEW
JA
JA
= 110 C/ W (GN)
= 110 C/ W (S)
16-LEAD PLASTIC SO
S PACKAGE
16
15
14
13
12
11
10
9
V
V
V
BACKUP
RESET
RESET
NC
LOBAT
BAK
BAK
CC
1.247
– 10.5
– 10.5
– 10.5
MIN
2.90
4.40
0.95
225
1.0
– 9
80
LTC1558CGN-3.3
LTC1558CGN-5
LTC1558CS-3.3
LTC1558CS-5
1.272
– 7.5
– 7.5
– 7.5
TYP
155
165
330
1.2
0.1
– 6
ORDER PART
1
NUMBER
3.465
5.250
1.297
MAX
– 5.5
– 5.5
– 5.5
1.05
250
225
445
1.5
– 4
15
50
UNITS
mA
mA
%
%
%
%
V
V
V
V
A
A
A
V