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参数资料
| 型号： | LTC3445EUF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/24页 |
| 文件大小： | 475K |
| 描述： | IC REG TRPL BUCK/LINEAR 24-QFN |
| 标准包装： | 91 |
| 拓扑： | 降压（降压）（1），线性（LDO）（2） |
| 功能： | 任何功能 |
| 输出数： | 3 |
| 频率 - 开关： | 1.5MHz |
| 电压/电流 - 输出 1： | 0.85 V ~ 1.55 V，600mA |
| 电压/电流 - 输出 2： | 可调至0.6V，50mA |
| 电压/电流 - 输出 3： | 可调至0.6V，50mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1334 (CN2011-ZH PDF) |
16
LTC3445
3445fa
1
2
C Register Definitions
(POR = 00 for all registers)
REG 0
REG 1
7 0 (Logic Low)
7 0 (Logic Low)
6 0 (Logic Low)
6 0 (Logic Low)
5 Buck DAC5
5 0 (Logic Low)
4 Buck DAC4
4 0 (Logic Low)
3 Buck DAC3
3 0 (Logic Low)
2 Buck DAC2
2 0 (Logic Low)
1 Buck DAC1
1 Slew Rate 1
0 Buck DAC0
0 Slew Rate 0
REG 2
REG 3
7 0 (Logic Low)
7 PGOOD Blank Disable
6 0 (Logic Low)
6 0 (Logic Low)
5 0 (Logic Low)
5 0 (Logic Low)
4 STATUSBuck Thermal Shutdown 4 0 (Logic Low)
3 STATUSBuck PGOODb
3 BURST Mode
2 STATUSLDO2 PGOODb
2 LDO2 Disable
1 STATUSLDO1 PGOODb
1 LDO1 Disable
0 Buck Update (GO Bit)
0 Buck Disable
OPERATIO
(refer to Figure 1)
REG 5
7 0 (Logic Low)
6 % SPR1
5 % SPR0
4 (Logic Low)
3 (Logic Low)
2 (Logic Low)
1 (Logic Low)
0 (Logic Low)
data line is also left high by the slave and master after a
slave has transmitted a byte of data to the master in a read
operation, but this is a not-acknowledge that indicates that
the data transfer is successful.
Commands Supported
The LTC3445 supports read byte and write byte com-
mands. For the ACK bits, an S indicates that the slave is
pulling the data line low and an M indicates that the master
is effectively acknowledging by leaving the data line high.
Data Transfer Timing for Write Commands
In order to help assure that bad data is not written into the
part, data from a write command is only stored after a
valid acknowledge has been performed. The part will
detect that SDA is low on the rising edge of SCL that marks
the end of the period in which the LTC3445 acknowledges
the data write and then latch the data during the following
SCL low period.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3446 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators |
| LTC3446EDE | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators |
| LTC3446EDE#PBF | 功能描述:IC REG TRPL BCK/LINEAR 14-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LTC3446EDE#TRPBF | 功能描述:IC REG TRPL BCK/LINEAR 14-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LTC3446EDE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators |
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