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參數(shù)資料
| 型號(hào)： | LT1510CN |
| 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, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-16 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 339K |
| 代理商： | LT1510CN |
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12
LT1510/LT1510-5
APPLICATIO
S I
FOR
ATIO
U
W
U
U
Figure 7. Current Comparator for Initiating Float Time-Out
0.18
GND
NEGATIVE EDGE
TO TIMER
INTERNAL
SENSE
RESISTOR
1510 F06
3.3V OR 5V
ADAPTER
OUTPUT
3
8
7
1
4
2
LT1510
D1
1N4148
C1
0.1
μ
F
BAT
SENSE
R1*
1.6k
R4
470k
R3
430k
R2
560k
LT1011
+
D2
1N4148
* TRIP CURRENT =
R1(V
BAT
)
(R2 + R3)(0.18
)
–
voltage decrease is detected as an indication of near full
charge. The charging current is then reduced to a much
lower value and maintained as a constant trickle charge.
An intermediate “top off” current may be used for a fixed
time period to reduce 100% charge time.
NiMH batteries are similar in chemistry to NiCd but have
two differences related to charging. First, the inflection
characteristic in battery voltage as full charge is ap-
proached is not nearly as pronounced. This makes it more
difficult to use dV/dt as an indicator of full charge, and
change of temperature is more often used with a tempera-
ture sensor in the battery pack. Secondly, constant trickle
charge may not be recommended. Instead, a moderate
level of current is used on a pulse basis (
≈
1% to 5% duty
cycle) with the time-averaged value substituting for a
constant low trickle.
Thermal Calculations
If the LT1510 is used for charging currents above 0.4A, a
thermal calculation should be done to ensure that junction
temperature will not exceed 125
°
C. Power dissipation in
the IC is caused by bias and driver current, switch resis-
tance, switch transition losses and the current sense
resistor. The following equations show that maximum
practical charging current for the 8-pin SO package
(125
°
C/W thermal resistance) is about 0.8A for an 8.4V
battery and 1.1A for a 4.2V battery. This assumes a 60
°
C
maximum ambient temperature. The 16-pin SO, with a
thermal resistance of 50
°
C/W, can provide a full 1.5A
charging current in many situations. The 16-pin PDIP falls
between these extremes. Graphs are shown in the Typical
Performance Characteristics section.
P
mA V
)
mA V
V
V
(
mA
I
P
I
V
V
V
P
I
R
V
V
t
V
I
f
P
BIAS
IN
BAT
BAT
IN
BAT
DRIVER
BAT
BAT
BAT
30
IN
SW
BAT
SW
BAT
IN
)(
OL
IN
BAT
SENSE
=
(
+
(
)( )
+
[
)(
(
)
+
(
)(
)
]
=
)
( )
+
=
(
) (
)(
)
+
( )( )(
)( )
=
3 5
1 5
7 5
0 012
1
55
0
2
2
2
.
18
2
(
)
I
BAT
R
SW
= Switch ON resistance
≈
0.35
t
OL
= Effective switch overlap time
≈
10ns
f = 200kHz (500kHz for LT1510-5)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1510CN#PBF | 功能描述:IC BATT CHARGER CONST V/I 16-DIP RoHS:是 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) |
| LT1510CS | 功能描述:IC BATT CHARGER CONST V/I 16SOIC 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) |
| LT1510CS#PBF | 功能描述:IC BATT CHARGER CONST V/I 16SOIC 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(cè)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 |
| LT1510CS#PBF | 制造商:Linear Technology 功能描述:Battery Management IC 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 1.5A, SOIC-16 |
| LT1510CS#TR | 功能描述:IC CHARGER BATT CONST V/I 16SOIC 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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