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| 型号： | LT1512IGN |
| 厂商： | Linear Technology |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR CONST I/V 16-SSOP |
| 标准包装： | 100 |
| 功能： | 充电管理 |
| 电池化学： | 所有电池类型 |
| 电源电压： | 2.7 V ~ 25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
LT1512
APPLICATIONS INFORMATION
input to R5 is equal to the processor V CC level multiplied
by the inverse PWM ratio. This assumes that the PWM
signal is a CMOS output that swings rail-to-rail with a
source resistance less than a few hundred ohms. The
negative voltage is converted to a current by R5 and R6
and ?ltered by C7. This current multiplied by R4 generates
a voltage that subtracts from the 100mV sense voltage
of the LT1512. This is not a high precision technique
because of the errors in V CC and the diode voltage, but
it can typically be used to adjust charging current over a
20% to 100% range with good repeatability (full charg-
ing current accuracy is not affected). To reduce the load
on the logic signal, R4 has been increased from 24Ω to
200Ω. This causes a known increase in full-scale charging
current (PWM = 0) of 3% due to the 5k input resistance of
the I FB pin. Note that 100% duty cycle gives full charging
current and that very low duty cycles (especially zero!)
will not operate correctly. Very low duty cycle (<10%)
is a problem because the peak detector requires a ?nite
up-time to reset C6.
More Help
Linear Technology Field Application Engineers have a CAD
spreadsheet program for detailed calculations of circuit
operating conditions, and our Applications Department is
always ready to lend a helping hand. For additional informa-
tion refer to the LT1372 data sheet. This part is identical to
the LT1512 except for the current ampli?er circuitry.
PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
.400*
(10.160)
MAX
.255
(6.477
.015*
0.381)
8
1
7
2
6
3
5
4
.300 – .325
(7.620 – 8.255)
.045 – .065
(1.143 – 1.651)
.130
(3.302
.005
0.127)
.065
(1.651)
.008 – .015
(0.203 – 0.381)
TYP
.120
(3.048)
.020
–0.381
+.035
.325 –.015
+0.889
8.255
.100
(2.54)
BSC
.018
(0.457
MIN
.003
0.076)
(0.508)
MIN
N8 1002
NOTE:
1. DIMENSIONS ARE
INCHES
MILLIMETERS
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
1512fa
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1512IGN#PBF | 功能描述:IC BATT CHRGR CONST I/V 16-SSOP 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) |
| LT1512IGN#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) |
| LT1512IGN#TRPBF | 功能描述:IC BATT CHRGR CONST I/V 16-SSOP 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) |
| LT1512IN8 | 功能描述:IC BATT CHRGR CONST I/V 8-DIP 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) |
| LT1512IN8#PBF | 功能描述:IC BATT CHRGR CONST I/V 8-DIP 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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