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參數(shù)資料
| 型號： | 4060EFE |
| 廠商： | Linear Integrated Systems |
| 英文描述： | Standalone Linear NiMH/NiCd Fast Battery Charger |
| 中文描述： | 獨立線性鎳氫/鎳鎘電池快速充電器 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 195K |
| 代理商： | 4060EFE |
16
LTC4060
4060f
TYPICAL APPLICATIO S
U
Full Featured 2A Charger Application
Figure 2 shows an application that utilizes the optional
temperature sensing and optional externally program-
mable automatic recharge features. It also has LEDs to
indicate charging status and the presence of sufficient
input supply voltage.
The PROG pin has a total resistance of 691 to ground
that programs the fast-charge current at the PNP’s emitter
to 2.02A (2A at the collector for beta of 100). The ARCT pin
voltage is programmed to 1.25V. When the battery cell
voltage falls below this automatic recharge will begin.
Optional capacitor CBAT filters excessive contact bounce.
This circuit can be modified to charge a 4A-Hr battery at a
C/2 rate simply by doubling the CTIMER capacitance.
Power Path Control
Proper power path control is an important consideration
when fast charging nickel cells. This control ensures the
system load remains powered at all times, but that normal
system operation and associated load transients do not
adversely affect the charging procedure. Figure 3 illus-
trates a 1A charger with power path control. When VIN is
applied the forward biased Schottky diode will power the
load while the P-channel FET will disconnect the battery
from the load. When VIN is removed, the FET will turn-on
to provide a low loss switch from the battery to the load,
and the diode will isolate VIN. The ACP output signals the
presense of VIN.
VCC
VIN = 5V
LTC4060
GND
SHDN
CHRG
NTC
PROG
ARCT
SEL0
SEL1
ACP
SENSE
DRIVE
BAT
TIMER
CHEM
PAUSE
5
15
11
7
8
9
10
13
3
1
2
4
12
6
RLED
330
RLED
330
RHOT
4.42k
RNTC
10k
RPROG
115
RARCT
576
CTIMER
1.5nF
16
14
4060 F02
CBAT
10F
2-CELL
NiMH
BATTERY
“CHARGE”
“AC”
MJD210
+
VCC
VIN = 5V
FDG312P
B220A
LTC4060
GND
SHDN
CHRG
NTC
PROG
ARCT
SEL0
SEL1
ACP
SENSE
DRIVE
BAT
TIMER
CHEM
PAUSE
RLED
330
RPROG
1400
CTIMER
820pF
16
RAC
10k
4060 F03
CLOAD
10F
*DRAIN SOURCE DIODE OF MOSFET
2-CELL
NiMH
BATTERY
“CHARGE”
FZT948
ACP
TO LOAD
*
5
15
11
7
8
9
10
13
3
1
2
4
12
6
+
Figure 2. Full Featured 2A Charger Application
Figure 3. 1A Charger Application with Power Path Control
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| 40696-1 | RING TERMINAL |
| 406C31GFREQ | QUARTZ CRYSTAL RESONATOR, 10 MHz - 50 MHz |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 4060-F | 制造商:Brady Corporation 功能描述: |
| 4060FI | 制造商:MALLORY 制造商全稱:MALLORY 功能描述:ELECTRIC FUEL PUMP |
| 4060-G | 制造商:Brady Corporation 功能描述: |
| 4060GB | 制造商:Greenlee Textron Inc 功能描述: |
| 4060-H | 制造商:Brady Corporation 功能描述: |
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