LTC1559CGN-3.3 Linear Technology, LTC1559CGN-3.3 Datasheet - Page 4

• 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

LTC1559-3.3/LTC1559-5
4
TYPICAL PERFORMANCE CHARACTERISTICS
100
140
120
100
80
60
40
20
80
60
40
20
60
50
40
30
20
10
0
0
0
1.0
2
64
Output Power vs Battery Voltage
Boost Converter Switching
Duty Cycle
Fast Recharge Time (Assume
NiCd Battery Fully Exhausted)
I
C
LTC1559-3.3
V
I
PK
PK
L
BAT
= 200 F
= 330mA
= 330mA
= 1.2V
NiCd TERMINAL VOLTAGE (V)
BATTERY CAPACITY (mA Hr)
OUTPUT VOLTAGE, V
1.1
4
128
1.2
6
256
BAK
1.3
8
(V)
W
1559 G01
1559 G04
1559 G07
U
1.4
512
10
10.5
10.4
10.3
10.2
10.1
10.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
9.9
9.8
9.7
9.6
9.5
0
6
5
4
3
2
1
0
50
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
Backup Time vs Battery Capacity
Trickle Charge Multiplier Factor
RESET Output Voltage
vs Supply Voltage
LTC1559-5
V
P
BAT
OUT
NiCd BATTERY TRICKLE CURRENT (mA)
= 1.2V
1
= 100mW
NiCd CELL CAPACITY (mA Hr)
125
SUPPLY VOLTAGE (V)
2
250
3
4.55V
4
375
5
1559 G02
1559 G08
4.7V
1559 G05
500
6
0.965
0.960
1.005
1.000
0.995
0.990
0.985
0.980
0.975
0.970
0.955
0.950
125
100
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
75
50
25
0
0
2
0
0
Boost Converter Switching
Frequency
Normalized Fast Recharge
Current vs Temperature
RESET Output Voltage
vs Supply Voltage
LTC1559-3.3
V
I
LTC1559-3.3
PK
BAT
= 330mA
= 1.2V
OUTPUT VOLTAGE, V
4
1
SUPPLY VOLTAGE (V)
TEMPERATURE ( C)
25
6
2
3V
50
BAK
3
8
(V)
1559 G03
3.12V
1559 G06
1559 G09
10
75
4