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參數(shù)資料
| 型號： | LTC1505 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Constant-Current/Voltage High Efficiency Battery Charger(恒定電流/電壓,高效率電池電荷控制器) |
| 中文描述： | Constant-Current/Voltage高效電池充電器（恒定電流/電壓，高效率電池電荷控制器） |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 197K |
| 代理商： | LTC1505 |
3
LT1505
PARAMETER
Preset Battery Voltage (12.3V, 16.4V, 12.6V, 16.8V)
All Preset Battery Voltages
Preset Battery Voltage Tolerance
BAT2 Pin Input Current
Voltage Setting Resistors Tolerance (R4, R5, R6, R7)
Shutdown
Undervoltage Lockout (TGATE and BGATE “Off”)
Threshold (Note 9)
UV Pin Input Current
Reverse Current from Battery in Micropower
Shutdown (Note 10)
Shutdown Threshold at SHDN Pin When V
CC
is Connected
SHDN Pin Current
Supply Current in Shutdown
(V
SHDN
is Low, V
CC
is Connected)
Minimum I
PROG
for Switching “On”
Minimum I
PROG
for Switching “Off” at V
PROG
≤
1V
Current Sense Amplifier CA1 Inputs (SENSE, BAT)
Input Bias Current (SENSE, BAT)
CONDITIONS
MIN
TYP
MAX
UNITS
Measured at BAT2 Pin
(V
BAT
+ 0.3V)
≤
V
CC
≤
24V
V
BAT2
= V
PRESET
– 1V
0.5
%
%
μ
A
%
G
–1
1
6
40
G
–40
Measured at UV Pin
G
6.3
6.7
7.25
V
0V
≤
V
UV
≤
8V
V
BAT
≤
20V, V
UV
≤
0.4V,
V
CC
= V
SW
= Battery Voltage
G
–1
5
μ
A
μ
A
10
30
G
1
2
V
0V
≤
V
SHDN
≤
3V
V
CC
≤
24V
8
μ
A
mA
15
20
–1
–1
–4
–2.4
–22
μ
A
mA
G
V
SHDN
= High
V
SHDN
= Low (Shutdown)
G
–50
–120
–10
μ
A
μ
A
V
V
mA
μ
A
Input Common Mode Low
Input Common Mode High
SPIN Input Current
G
–0.25
G
V
CC
– 0.3
2
10
V
SHDN
= High, V
SPIN
≥
2V (Note 8)
V
SHDN
= Low (Shutdown)
G
Oscillator
Switching Frequency (f
NOM
)
Switching Frequency Tolerance
SYNC Pin Input Current
180
170
200
200
220
230
–0.5
–30
2.0
280
kHz
kHz
mA
μ
A
G
V
SYNC
= 0V
V
SYNC
= 2V
Synchronization Pulse Threshold on SYNC Pin
Synchronization Frequency
Maximum Duty Cycle
V
BOOST
Threshold to Turn TGATE Off
(Comparator A2) (Note 4)
0.9
240
1.2
V
G
kHz
Measured at (V
BOOST
– V
SW
)
Low to High
Hysteresis
G
6.8
7.3
0.25
90
7.6
V
V
%
Maximum Duty Cycle of Natural Frequency 200kHz
(Note 5)
Current Amplifier CA2
Transconductance
Maximum V
C
for Switch Off
I
VC
Current (Out of Pin)
G
85
V
C
= 1V, I
VC
=
±
1
μ
A
150
200
300
0.6
50
3
0.35
μ
mho
G
V
V
C
≥
0.6V
V
C
< 0.45V
V
SHDN
= Low (Shutdown)
G
G
μ
A
mA
V
C
at Shutdown
G
V
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 18V, V
BAT
= 12.6V, V
CLN
= V
CC
(LT1505), no load on any
outputs unless otherwise noted.
The
G
denotes specifications which apply over the full operating
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