LT1571-1 LINER [Linear Technology], LT1571-1 Datasheet - Page 3

• Manufacturer Part Number: LT1571-1
• Description: Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag
• Manufacturer: LINER [Linear Technology]

The
V
V
ELECTRICAL CHARACTERISTICS
PARAMETER
Overall
Supply Current
DC Battery Charging Current, I
Shutdown
Auto Shutdown, Reverse Current from Battery
(When Adapter in Figure 1 Circuit is Removed)
Shutdown Threshold at V
When V
Shutdown Supply Current
Reference
Reference Voltage (LT1571-1)
Preset Battery Voltage
LT1571-2: 8.2V/8.4V
LT1571-5: 4.1V/4.2V
Voltage Setting Resistors Tolerance (R4, R5)
BAT2 Pin Input Current (LT1571-2, LT1571-5)
Charge Completion Flag (Comparator E6)
Charge Completion Threshold (Note 8)
Threshold on CAP Pin
FLAG (Open Collector) Output Low
FLAG Pin Leakage Current
Voltage Amplifier VA
Transconductance
Output Source Current
V
Overall
Minimum Input Operating Voltage
Boost Pin Current
CC
CC
FB
Input Bias Current (LT1571-1)
= 16V (LT1571-1, LT1571-2), V
= V
denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 C.
CC
MAX
is Connected
= 26V, no load on any outputs unless otherwise noted. (Note 6)
C
Pin
BAT
CC
= 10V (LT1571-5), V
CONDITIONS
V
8V V
V
V
V
R
Supplying I
R
Absolute Value, Not Matching
V
R
R
Low-to-High Threshold
High-to-Low Threshold
V
V
Output Current from 100 A to 500 A
V
At 0.75mA Output Current
Undervoltage Lockout
V
20V < V
2V V
8V < V
PROG
CC
BAT
C
BAT2
CAP
CAP
PROG
CC
PROG
PROG
PROG
PROG
R
R
R
R
R
R
8V V
8V V
8V V
T
8V V
J
PROG
PROG
PROG
PROG
PROG
PROG
= 26V, V
– V
= 25 C
40mV
= 4.5V, I
= 0.6V, V
= V
BOOST
CC
BOOST
= 2.7V
= V
= 4.93k. Measured at V
= 4.93k. Measured at BAT2 Pin
= 4.93k
= 4.93k, R
20V, 0 C T
BOOST
CC
CC
CC
CC
CC
= 4.93k
= 4.93k, T
= 3.28k
= 49.3k
= 49.3k, T
= 4.93k
PRESET
REF
– V
PROG
26V, 0V V
BAT
– V
– V
, V
26V, 0 C T
26V, 0 C T
26V, T
26V, 0 C T
BAT
FLAG
BOOST
CC
FB
20V
CC
CC
= 20V (LT1571-1)
and Switch Off
– 1V
CAP
= 26V
= 8V (LT1571-1,LT1571-2), V
= V
J
J
J
< 0 C
< 0 C
J
1mA
= 65.6k
20V (Switch ON) (LT1571-1)
8V (Switch ON)
REF
< 0 C (Note 5)
26V
BAT
70 C (LT1571-1)
+ 10mV
J
J
J
20V (LT1571-1)
FB
70 C
125 C
125 C
, with VA
BAT
= 4V (LT1571-5), maximum operating
2.446
2.441
2.430
0.93
0.91
1.35
0.93
0.14
0.05
MIN
–40
0.6
0.3
1.3
6.2
75
70
40
– 1
LT1571 Series
2.465
2.465
2.465
0.085
0.15
0.20
0.10
0.25
TYP
100
5.2
1.0
1.5
1.0
0.5
0.6
80
5
4
7
6
8
3
2.480
2.489
2.480
MAX
1.07
1.09
1.65
1.07
0.28
0.13
125
130
0.3
4.5
0.3
2.5
7.8
15
40
20
30
11
14
7
1
6
3
15
UNITS
3
mho
mA
mA
mA
mV
mA
mA
mA
mA
nA
%
%
%
A
A
A
A
A
V
V
V
A
A
A
V
V
V
A
V
A
A