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参数资料
| 型号： | LT1571-2 |
| 厂商： | Linear Technology Corporation |
| 英文描述： | Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag |
| 中文描述： | 恒流/恒压电池充电器预置电压和终止旗 |
| 文件页数： | 3/16页 |
| 文件大小： | 201K |
| 代理商： | LT1571-2 |
3
LT1571 Series
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C.
V
CC
= 16V (LT1571-1, LT1571-2), V
CC
= 10V (LT1571-5), V
BAT
= 8V (LT1571-1,LT1571-2), V
BAT
= 4V (LT1571-5), maximum operating
V
CC
= V
MAX
= 26V, no load on any outputs unless otherwise noted. (Note 6)
ELECTRICAL CHARACTERISTICS
PARAMETER
Overall
Supply Current
DC Battery Charging Current, I
BAT
CONDITIONS
MIN
TYP
MAX
UNITS
V
PROG
= 2.7V
8V
≤
V
CC
≤
26V, 0V
≤
V
BAT
≤
20V (LT1571-1)
R
PROG
= 4.93k
R
PROG
= 4.93k, T
J
< 0
°
C
R
PROG
= 3.28k
R
PROG
= 49.3k
R
PROG
= 49.3k, T
J
< 0
°
C
V
CC
= 26V, V
BAT
= 20V (LT1571-1)
R
PROG
= 4.93k
G
5.2
7
mA
G
G
G
0.93
0.91
1.35
75
70
1.0
1.07
1.09
1.65
125
130
A
A
A
1.5
100
mA
mA
G
0.93
1.0
1.07
A
Shutdown
Auto Shutdown, Reverse Current from Battery
(When Adapter in Figure 1 Circuit is Removed)
Shutdown Threshold at V
C
Pin
When V
CC
is Connected
Shutdown Supply Current
Reference
Reference Voltage (LT1571-1)
V
BAT
≤
20V, 0
°
C
≤
T
J
≤
70
°
C (LT1571-1)
G
5
15
μ
A
40
80
mV
V
C
≤
40mV
0.15
0.3
mA
R
PROG
= 4.93k. Measured at V
FB
, with VA
Supplying I
PROG
and Switch Off
8V
≤
V
CC
≤
26V, 0
°
C
≤
T
J
≤
70
°
C
8V
≤
V
CC
≤
26V, 0
°
C
≤
T
J
≤
125
°
C
8V
≤
V
CC
≤
26V, T
J
< 0
°
C (Note 5)
G
G
G
2.446
2.441
2.430
2.465
2.465
2.465
2.480
2.489
2.480
V
V
V
Preset Battery Voltage
LT1571-2: 8.2V/8.4V
LT1571-5: 4.1V/4.2V
R
PROG
= 4.93k. Measured at BAT2 Pin
T
J
= 25
°
C
8V
≤
V
CC
≤
26V, 0
°
C
≤
T
J
≤
125
°
C
Absolute Value, Not Matching
V
BAT2
= V
PRESET
– 1V
0.5
%
%
%
μ
A
G
–1
–40
1
40
6
Voltage Setting Resistors Tolerance (R4, R5)
BAT2 Pin Input Current (LT1571-2, LT1571-5)
Charge Completion Flag (Comparator E6)
Charge Completion Threshold (Note 8)
G
R
PROG
= 4.93k
R
PROG
= 4.93k, R
CAP
= 65.6k
Low-to-High Threshold
High-to-Low Threshold
V
CAP
= 4.5V, I
FLAG
≤
1mA
V
CAP
= 0.6V, V
CC
= 26V
0.14
0.05
0.20
0.085
4
0.28
0.13
4.5
A
A
V
V
V
Threshold on CAP Pin
0.6
FLAG (Open Collector) Output Low
FLAG Pin Leakage Current
Voltage Amplifier VA
Transconductance
Output Source Current
V
FB
Input Bias Current (LT1571-1)
Overall
Minimum Input Operating Voltage
Boost Pin Current
G
0.3
3
G
μ
A
Output Current from 100
μ
A to 500
μ
A
V
PROG
= V
REF
, V
FB
= V
REF
+ 10mV
At 0.75mA Output Current
0.3
1.3
0.6
2.5
mho
mA
nA
G
±
3
±
15
Undervoltage Lockout
V
CC
– V
BOOST
≤
20V
20V < V
CC
– V
BOOST
≤
26V
2V
≤
V
BOOST
– V
CC
≤
8V (Switch ON)
8V < V
BOOST
– V
CC
≤
20V (Switch ON) (LT1571-1)
G
6.2
7
7.8
20
30
11
14
V
G
G
G
G
0.10
0.25
6
8
μ
A
μ
A
mA
mA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1571-5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag |
| LT-1571-511-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1571-514-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1571-531-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1571-533-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
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