收藏本站
LTC3230
OPERATION
charge pump function. Driving ENLDO1 and ENLDO2 high
enable LDO1 and LDO2 respectively. When the charge
pump is enabled, each LDO consumes an additional 60μA
(typical) from V IN . If the charge pump is not enabled, one
LDO consumes 125μA (typical) and the second uses 60μA
(typical) additional current.
LDO output voltage is set using three-level input pins V1
and V2 as shown in Table 2.
The reference input to each LDO is ramped when enabled
to provide an output soft-start lasting typically 100μs.
When an LDO is disabled its output is pulled to ground
through an 11.5k resistor.
Shutdown Current
In shutdown mode all the circuitry is turned off and the
LTC3230 draws a very low current from the V IN supply.
Table 2. LDO1 and LDO2 Output Voltage Control
V1 GND FLOAT
LDO1 (V) 1.2 1.5
V IN
1.8
When in shutdown, CPO is disconnected from V IN and is
pulled to ground through a 14.3k resistor. The LTC3230
enters shutdown mode when both ENM and ENS pins
are brought low for 250μs (minimum) and ENLDO1 and
ENLDO2 are brought low. All enable pins ENM, ENS, EN-
V2
LDO2 (V)
11
10
GND
1.8
V IN = 3V
V CPO = 4.2V
C1 = C2 = C6 = 1 μ F
FLOAT
2.8
V IN
3.3
LDO1 and ENLDO2 have internal pull-downs to de?ne the
shutdown state whenever the inputs are ?oating.
12
V IN = 3V
V CPO = 4.8V
C1 = C2 = C6 = 1 μ F
11
9
8
7
6
5
10
9
8
7
6
–40
–15
10 35
60
85
–40
–15
10 35
60
85
TEMPERATURE ( ° C)
3230 G06
Figure 3. Typical 1.5x R OL vs Temperature
TEMPERATURE ( ° C)
3230 G08
Figure 4. Typical 2x R OL vs Temperature
3230fa
11
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
LTC3452EUF#TRPBF IC LED DRIVER PHOTO FLASH 20-QFN
LTC3453EUF#TRPBF IC LED DRIVER PHOTO FLASH 16-QFN
LTC3454EDD#TRPBF IC LED DRIVER PHOTO FLASH 10-DFN
LTC3490EDD#PBF IC LED DRIVER PHOTO FLASH 8-DFN
LTC3783EFE#PBF IC LED DRVR PWM CONTROL 16-TSSOP
LV5026MC-AH IC LED DRIVER 1CH HV 10SOIC
LV5213LP-TE-L-E IC LED DVR 3CH CELL PHONE VCT16
LV5216CS-TE-L-E IC LED DRIVER 10CH CELL 36WLP
相关代理商/技术参数
LTC3230EUD#TRPBF 功能描述:IC LED DRIVR WHITE BCKLGT 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LTC3230EUD-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:5-LED Main/Sub Display Driver with Dual LDO
LTC3230EUD-TRPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:5-LED Main/Sub Display Driver with Dual LDO
LTC3240 制造商:LINER 制造商全称:Linear Technology 功能描述:3.3V/2.5V Step-Up/ Step-Down Charge Pump DC/DC Converter
LTC3240-2.5 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump
LTC3240-3.3 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump
LTC3240EDC-2.5 制造商:LINER 制造商全称:Linear Technology 功能描述:3.3V/2.5V Step-Up/ Step-Down Charge Pump DC/DC Converter
LTC3240EDC-2.5#TRMPBF 功能描述:IC REG MULTI CONFIG 2.5V 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:升压（升压） 输出类型:两者兼有 输出数:1 输出电压:5V，2 V ~ 16.5 V 输入电压:2 V ~ 16.5 V PWM 型:- 频率 - 开关:45kHz 电流 - 输出:50mA 同步整流器:无 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:8-PDIP