LTC1559CGN-3.3 Linear Technology, LTC1559CGN-3.3 Datasheet - Page 3

• Manufacturer Part Number: LTC1559CGN-3.3
• Description: IC BACKUP BATT CNTRLR3.3V 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC1559CGN-3.3

• Function: Back-Up Management
• Battery Type: Nickel Cadmium (NiCd)
• Voltage - Supply: 2.9 V ~ 3.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS
SYMBOL
UVLO Reset Monitor
V
Backup Battery Charger
I
I
Q
Q
V
Push-Button Reset
V
t
Reset Timer
t
t
V
V
I
PS Comparator
V
Internal V
tr
Shutdown Pin (Note 3)
V
I
The
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: Quiescent current is measured during push-button reset.
Note 3: Only applies to 16-pin version.
Note 4: Although the V
threshold voltages have a specification tolerance, they are guaranteed by
design and tested in production never to overlap.
CHGF
CHGT
RST
SC
SHDN
CTL
HRESET
LOBAT2
CTL(CLAMP)
CTL
RST1
RST
HYST
SHDN
RECH
TRK
denotes specifications which apply over the full operating
CC
PARAMETER
V
Battery Charge Current During Fast Recharge
User-Programmable Trickle Charge
Current Range
Fast Recharge Factor (Note 6)
Nominal Trickle Charge Multiplier Factor
CTL Clamp Voltage in Trickle Mode
CTL Input Threshold
CTL Input Low Time (Debounce Time)
Push-Button Duration for Hard Reset
RESET Pulse Width
RESET Output Voltage
RESET Output Voltage
RESET Output Current
Short-Circuit Current
Comparator Threshold Hysteresis
UVLO, Comparator Propagation Delay (Rising)
SHDN Input Threshold
SHDN Pin Bias Current
Monitor Comparator
BAT
UVLO Trip Voltage (Note 5)
BAK(ON)
, V
BAK(OFF)
, V
UVLO(ON)
and V
UVLO(OFF)
CONDITIONS
I
I
V
V
V
V
Output Source Current V
Output Source Current V
Output Sink Current V
Output Sink Current V
T
Logic Low, V
Logic High, V
V
CHGT
CHGT
CTL
CTL
CC
CC
A
CC
= 25 C
= 1V, I
= 4.25V, I
= 5V, V
Low for < t
Low for > t
= 1mA
= 1mA
V
BAT
SINK
SHDN
= 1.2V, T
IL
IH
SINK
= 10 A
HRESET
HRESET
= 0V
= 1.6mA
Note 5: Low cell voltage reset is only triggered when 0.25V < V
for at least 20 s while in backup mode.
Note 6: Fast recharge factor is defined as the ratio of charge replenished to
the NiCd battery during fast recharge to the charge withdrawn from the
NiCd battery during backup.
Note 7: The LTC1559 switches automatically between the low and high
operating current levels. See Applications Information for more details.
CC
CC
(Soft Reset)
(Hard Reset)
A
CC
CC
= 3.3V
= 5V
= 0 C to 70 C unless otherwise noted.
= 3.3V
= 5V
LTC1559-3.3/LTC1559-5
0.85
0.05
1.35
0.45
MIN
1.10
115
11
20
50
8
2
TYP
185
0.9
1.6
0.5
0.1
7.5
1.8
16
10
26
80
10
20
20
40
90
5
8
MAX
0.95
1.85
0.55
250
150
345
200
3.4
0.4
0.8
21
12
15
2
CTL
< 0.9V
UNITS
3
C/C
A/A
mA
mA
mV
sec
mV
mA
mA
mA
mA
mV
ms
ms
V
V
V
V
V
A
s
s