參數(shù)資料
型號(hào)： LT1510IS8
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Constant-Voltage/ Constant-Current Battery Charger
中文描述： 2 A BATTERY CHARGE CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 0.150 INCH, PLASTIC, SO-8
文件頁數(shù)： 13/16頁
文件大小： 339K
代理商： LT1510IS8
13
LT1510/LT1510-5
APPLICATIO
S I
FOR
ATIO
U
Example: V
IN
= 15V, V
BAT
= 8.4V, I
BAT
= 1.2A;
=
(
+
( )
[
( )( )
( )
=
( ) (
( )( )(
=
+
=
=
(
W
U
U
P
mA
mA
mA
W
P
W
BIAS
DRIVER
)( )
+
( )
]
=
=
+
(
)( )
8 4
30
=
+
3 5
15
1 5
8 4
.
8 4
.
15
7 5
0 012 1 2
.
0 17
1 2 8 4
.
1
55 15
)( )
+
15
15 1 2 200
0 13
2
2
.
.
P
kHz
W
P
W
SW
SENSE
)
)( )
=
1 2
.
0 35 8 4
.
10 10
0 28
.
0 04
.
0 32
2
0 18 1 2
.
0 26
.
2
9
.
.
.
.
Total power in the IC is:
0.17 + 0.13 + 0.32+ 0.26 = 0.88W
Temperature rise will be (0.88W)(50
°
C/W) = 44
°
C. This
assumes that the LT1510 is properly heat sunk by con-
necting the four fused ground pins to the expanded traces
and that the PC board has a backside or internal plane for
heat spreading.
The P
DRIVER
term can be reduced by connecting the boost
diode D2 (see Figures 2 and 6 circuits) to a lower system
voltage (lower than V
BAT
) instead of V
BAT
(see Figure 8).
Then,
P
I
V
V
V
30
V
DRIVER
BAT
BAT
X
X
IN
=
(
)(
)( )
( )
+
1
55
For example, V
X
= 3.3V,
P
A
V
V
V
V
W
DRIVER
=
(
)(
)(
)
)
+
(
=
1 2
8 4
3 3
1
3 3
30
55 15
0 045
The average I
VX
required is:
P
V
X
Total board area becomes an important factor when the
area of the board drops below about 20 square inches. The
graph in Figure 9 shows thermal resistance vs board area
for 2-layer and 4-layer boards. Note that 4-layer boards
have significantly lower thermal resistance, but both types
show a rapid increase for reduced board areas. Figure 10
shows actual measured lead temperature for chargers
operating at full current. Battery voltage and input voltage
will affect device power dissipation, so the data sheet
power calculations must be used to extrapolate these
readings to other situations.
Vias should be used to connect board layers together.
Planes under the charger area can be cut away from the
rest of the board and connected with vias to form both a
W
V
mA
DRIVER
=
=
0 045
3 3
14
BOARD AREA (IN
2
)
0
60
55
50
45
40
35
30
25
15
25
1510 F08
5
10
20
30
35
T
°
C
S16, MEASURED FROM AIR AMBIENT
TO DIE USING COPPER LANDS AS
SHOWN ON DATA SHEET
2-LAYER BOARD
4-LAYER BOARD
Figure 9. LT1510 Thermal Resistance
BOOST
SW
SENSE
V
X
I
VX
1510 F07
LT1510
C1
L1
D2
10
μ
F
+
Figure 8
相關(guān)PDF資料
PDF描述
LT1510 Constant-Voltage/ Constant-Current Battery Charger
LT1510C Constant-Voltage/ Constant-Current Battery Charger
LT1510I Constant-Voltage/ Constant-Current Battery Charger
LT1510CN Constant-Voltage/ Constant-Current Battery Charger
LT1510-5 Constant-Voltage/ Constant-Current Battery Charger
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1510IS8#PBF 功能描述:IC BATT CHARGER CONST V/I 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件
LT1510IS8#TR 功能描述:IC CHARGER BATT CONST V/I 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件
LT1510IS8#TRPBF 功能描述:IC BATT CHARGER CONST V/I 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件
LT1511 制造商:LINER 制造商全稱:Linear Technology 功能描述:Constant-Current/ Constant-Voltage 3A Battery Charger with Input Current Limiting
LT-1511-101-012 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk
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