LT1769CGN#TR Linear Technology, LT1769CGN#TR Datasheet - Page 4

• Manufacturer Part Number: LT1769CGN#TR
• Description: IC CHARGER BATT CONST V/I 28SSOP
• Manufacturer: Linear Technology

Specifications of LT1769CGN#TR

• Function: Charge Management
• Battery Type: Lead Acid, Li-Ion, NiCd, NiMH
• Voltage - Supply: 8 V ~ 25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP (0.150", 3.95mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LT1769
temperature range, otherwise specifications are at T
PARAMETER
Voltage Amplifier VA
Transconductance (Note 3)
Output Source Current
OVP Input Bias Current
Current Limit Amplifier CL1, 8V Input Common Mode
Turn-On Threshold
Transconductance
CLP Input Current
CLN Input Current
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Tested with Test Circuit 1.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFORMANCE CHARACTERISTICS
4
100
98
96
94
92
90
88
86
84
82
80
0.2
Efficiency of Figure 1 Circuit
V
V
IN
BAT
= 16.5
= 8.4V
0.6
CHARGER EFFICIENCY
1.0
I
INCLUDES LOSS
BAT
IN DIODE D3
(A)
1.4
W
1.8
1769 G01
U
2.2
CONDITIONS
Output Current from 50 A to 500 A
V
VA Output Current at 0.5mA
VA Output Current at 0.5mA, T
VA Output Current at 0.5mA, T
0.5mA Output Current
Output Current from 50 A to 500 A
0.5mA Output Current, V
0.5mA Output Current V
OVP
8
7
6
5
4
3
2
1
0
A
0
I
CC
V
= 25 C. V
= V
T
CC
J
vs Duty Cycle
= 0 C
10
REF
= 16V
The
+ 10mV, V
20
CC
DUTY CYCLE (%)
T
30
denotes specifications which apply over the full operating
J
= 16V, V
= 25 C
40
PROG
Note 3: Tested with Test Circuit 2.
Note 4: A linear interpolation can be used for reference voltage
specification between 0 C and – 40 C.
UV
T
UV
J
= 125 C
50
= V
BAT
0.4V
0.4V
A
A
REF
> 90 C
< 0 C
60
= 8V. No load on any outputs unless otherwise noted.
+ 10mV
70
1769 G02
80
7.0
6.5
6.0
5.5
5.0
4.5
I
0
CC
MIN
0.25
–15
MAXIMUM DUTY CYCLE
1.1
0.5
93
vs V
5
CC
TYP
100
10
0.6
0.3
0.8
1
3
V
CC
15
(V)
T
T
MAX
J
J
110
1.3
25
= 125 C
= 0 C
10
15
2
1
2
20
T
J
= 25 C
25
UNITS
1769 G03
1769fa
mho
mho
mA
mV
mA
nA
nA
nA
30
A