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参数资料
| 型号： | LTC3865IFE#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 880 kHz SWITCHING FREQ-MAX, PDSO38 |
| 封装： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-38 |
| 文件页数： | 2/38页 |
| 文件大小： | 400K |
| 代理商： | LTC3865IFE#PBF |
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LTC3865/LTC3865-1
10
3865fb
MODE/PLLIN (Pin 27/Pin 36): Force Continuous Mode,
Burst Mode or Pulse-Skip Mode Selection Pin and External
Synchronization Input to Phase Detector Pin. Connect this
pin to SGND to force both channels in continuous mode of
operation. Connect to INTVCC to enable pulse-skip mode of
operation. Leaving the pin oating will enable Burst Mode
operation. A clock on the pin will force the controller into
continuous mode of operation and synchronize the internal
oscillator with the clock on this pin.
FREQ (Pin 29/Pin 38): This pin sets the frequency of the
internal oscillator. A constant current of 7.5μA is owing
out of this pin and a resistor connected to this pin sets
its DC voltage, which in turn, sets the frequency of the
internal oscillator.
RUN1, RUN2 (Pins 30, 11/Pins 1, 17): Run Control
Inputs. A voltage above 1.22V on either pin turns on the IC.
However, forcing either of these pins below 1.22V causes
the IC to shut down the circuitry required for that particular
channel. There are 1μA pull-up currents for these pins.
Once the RUN pin rises above 1.22V, an additional 4.5μA
pull-up current is added to the pin.
PIN FUNCTIONS (QFN/TSSOP)
SENSE1+, SENSE2+ (Pins 31, 10/Pins 2, 16): Current
Sense Comparator Inputs. The (+) inputs to the current
comparators are normally connected to DCR sensing
networks or current sensing resistors.
SENSE1–, SENSE2– (Pins 32, 9/Pin 3, 15):
Current Sense
Comparator Inputs. The (–) inputs to the current compara-
tors are connected to the outputs.
SGND (Pin 33/Pin 8): Signal Ground. All small-signal
components and compensation components should
connect to this ground, which in turn connects to PGND
at one point. Pin 33 is the Exposed Pad and available for
QFN package.
SGND (Exposed Pad Pin 33/ Exposed Pad Pin 39): Signal
Ground. Must be soldered to PCB, providing a local ground
for the control components of the IC, and be tied to the
PGND pin under the IC.
PGND1, PGND2 (NA/Pins 32, 26): Power Ground Pin.
Connect this pin closely to the sources of the bottom
N-channel MOSFETs, the (–) terminal of CVCC and the (–)
terminal of CIN.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3865IUH#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3865IUH#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3865IUH-1#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3865IUH-1#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3866EFE#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 24TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
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