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參數(shù)資料
| 型號： | LTC1960 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 4A, High Efficiency, Standalone Li Battery Charger |
| 中文描述： | 第4A，高效，獨(dú)立鋰電池充電器 |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 241K |
| 代理商： | LTC1960 |
18
LTC4007
4007i
Figure 11. Circuit Application (16.8V/3A) to Automatically Trickle Charge Depleted Batteries
3C4C
CHEM
LOBAT
I
CL
ACP
SHDN
FAULT
CHG
FLAG
NTC
R
T
LOBAT
I
CL
ACP
SHDN
FAULT
CHG
FLAG
DCIN
INFET
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
PROG
ITH
GND
LTC4007
R9 32.4k 1%
R
T
309k
1%
C7
0.47
μ
F
THERMISTOR
TIMING RESISTOR
(~2 HOURS)
R12
100k
R11
100k
R10
100k
V
LOGIC
*
*
DCIN
0V TO 20V
3A
C1
0.1
μ
F
Q3
INPUT SWITCH
C4
15nF
Q1
Q2
D1
C2
20
μ
F
L1
15
μ
H 3A
R1
4.9k
1%
R4
3.01k
1%
R5 3.01k 1%
R
0.033
1%
R
0.033
1%
C3
20
μ
F
*PIN OPEN
D1: MBRM140T3
Q1: Si4431ADY
Q2: FDC645N
Q4: 2N7002 OR BSS138
BAT
MONITOR
(CHARGING
CURRENT
MONITOR)
SYSTEM
LOAD
C6
0.12
μ
F
R7
6.04k
1%
R14
73.2k
1%
C5
0.0047
μ
F
4007 F11
R6
26.7k
1%
Q4
5. Place output capacitors next to the sense resistor
output and ground.
6. Output capacitor ground connections need to feed
into same copper that connects to the input capacitor
ground before tying back into system ground.
General Rules
7. Connection of switching ground to system ground or
internal ground plane should be single point. If the
system has an internal system ground plane, a good
way to do this is to cluster vias into a single star point
to make the connection.
8. Route analog ground as a trace tied back to IC ground
(analog ground pin if present) before connecting to
any other ground. Avoid using the system ground
plane. CAD trick: make analog ground a separate
ground net and use a 0
resistor to tie analog ground
to system ground.
9. A good rule of thumb for via count for a given high
current path is to use 0.5A per via. Be consistent.
10. If possible, place all the parts listed above on the same
PCB layer.
11. Copper fills or pours are good for all power connec-
tions except as noted above in Rule 3. You can also use
copper planes on multiple layers in parallel too—this
helps with thermal management and lower trace in-
ductance improving EMI performance further.
12. For best current programming accuracy provide a
Kelvin connection from R
SENSE
to CSP and BAT. See
Figure 12 as an example.
It is important to keep the parasitic capacitance on the R
T
,
CSP and BAT pins to a minimum. The traces connecting
these pins to their respective resistors should be as short
as possible.
APPLICATIU
W
U
U
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| LTC1960CG#PBF | 功能描述:IC BATT CHRGR/SELECTR DUAL36SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC1960CG#TR | 功能描述:IC BATT CHRGR/SELECTR DUAL36SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
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