LT1769IGN Linear Technology, LT1769IGN Datasheet - Page 3

• Manufacturer Part Number: LT1769IGN
• Description: IC CHARGER BATT CONST V/I 28SSOP
• Manufacturer: Linear Technology

Specifications of LT1769IGN

• Function: Charge Management
• Battery Type: Lead Acid, Li-Ion, NiCd, NiMH
• Voltage - Supply: 8 V ~ 25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP (0.150", 3.95mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
V
PARAMETER
Overall
V
UV Pin Input Current
UV Output Voltage at UV
UV Output Leakage Current at UV
Reverse Current from Battery (When V
Not Connected, V
Boost Pin Current
Switch
Switch ON Resistance
Switch OFF Leakage Current
Minimum I
Minimum I
Maximum V
Current Sense Amplifier CA1 Inputs (Sense, BAT)
Input Bias Current
Input Common Mode Low
Input Common Mode High
SPIN Input Current
Reference
Reference Voltage (Note 3)
Reference Voltage
Oscillator
Switching Frequency
Switching Frequency
Maximum Duty Cycle
Current Amplifier CA2
Transconductance
Maximum V
I
VC
CC
CLN
I
BOOST
Current (Out of Pin)
Undervoltage Lockout (Switch OFF) Threshold
= V
/ I
CC
SW
PROG
PROG
BAT
C
. No load on any outputs unless otherwise noted.
for Switch OFF
During Switch ON
for Switch ON
for Switch ON
for Switch OFF
SW
Is Floating)
OUT
Pin
OUT
Pin
CC
Is
CONDITIONS
Measured at UV Pin
0.2V V
In Undervoltage State, I
8V V
V
V
V
2V V
8V V
8V V
V
V
V
20V < V
R
VA Supplying I
All Conditions of V
All Conditions of V
V
V
V
BAT
CC
CC
BOOST
BOOST
SW
C
C
C
PROG
= 1V, I
< 0.45V
A
= 20V, V
= 28V, V
= 0V, V
0.6V
= 25 C. V
UV
BOOST
BOOST
CC
= 4.93k, Measured at OVP with
20V, V
– V
= 24V, I
CC
UV
, V
VC
The
SW
V
UVOUT
CC
= 1 A
BOOST
BOOST
28V
– V
– V
MAX
8V
UV
PROG
SW
CC
CC
CC
2V
, I
20V
denotes specifications which apply over the full operating
= 5V
CC
CC
0.4V
SW
= 0V
= 0V
< 8V (Switch ON)
= 16V, V
and Switch OFF
, T
, T
2A
25V (Switch ON)
= 2A,
T
T
UVOUT
A
A
A
A
< 0 C (Note 4)
< 0 C
0 C
0 C
BAT
= 70 A
= 8V, R
S2
= R
S3
= 200 (see Block Diagram),
– 0.25
2.448
2.441
2.43
MIN
180
170
160
150
90
85
6
2
1
2.465
– 100
0.15
TYP
– 50
200
200
250
0.1
0.1
0.1
0.1
0.25
2.4
25
93
7
3
6
8
2
4
4
V
V
2.477
2.489
2.489
– 125
– 200
MAX
CC
CC
0.25
100
200
220
230
230
550
100
0.5
0.6
15
10
20
12
35
20
3
8
5
3
9
LT1769
– 2
– 2
UNITS
mA/A
1769fa
3
mho
kHz
kHz
kHz
mA
mA
mA
mA
%
%
V
A
V
A
A
A
A
A
A
A
V
A
V
V
A
V
V
V
V
A