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参数资料
| 型号： | LT1510CS#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER CONST V/I 16SOIC |
| 标准包装： | 50 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 6.2 V ~ 28 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1340 (CN2011-ZH PDF) |
LT1510/LT1510-5
APPLICATIO N S I N FOR M ATIO N
BAT
0.18 ?
SENSE
ADAPTER
OUTPUT
3.3V OR 5V
INTERNAL
SENSE
RESISTOR
LT1510
R1*
1.6k
C1
0.1 μ F
3
–
8
D1
1N4148
R4
470k
GND
2
LT1011
+
4
7
NEGATIVE EDGE
TO TIMER
R2
D2
1
560k 1N4148
R3
430k
* TRIP CURRENT =
R1(V BAT )
(R2 + R3)(0.18 ? )
1510 F06
Figure 7. Current Comparator for Initiating Float Time-Out
( ) 7 . 5 mA + ( )( )
[
]
V
+
0 . 012 I
V IN
( )( ) ? ? 1 + V 30 ? ?
2 ? ?
I V
55 ( )
V
( ) ( )( ) + ( )( )( )( ) f
I R V
=
V
= ( 0 . 18 ? )( I )
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
12
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 BIAS = ( 3 . 5 mA )( V IN ) + 1 . 5 mA ( V BAT )
2
BAT
BAT
BAT
BAT BAT
P DRIVER =
IN
2
BAT SW BAT
P SW t OL V IN I BAT
IN
2
P SENSE 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1510I | 制造商:LINER 制造商全称:Linear Technology 功能描述:Constant-Voltage/ Constant-Current Battery Charger |
| LT1510IGN | 功能描述:IC BATT CHARGER CONST V/I 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LT1510IGN#PBF | 功能描述:IC BATT CHARGER CONST V/I 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LT1510IGN#TR | 功能描述:IC CHARGER BATT CONST V/I 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LT1510IGN#TRPBF | 功能描述:IC BATT CHARGER CONST V/I 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
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