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参数资料
| 型号： | LTC3823EUH#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 32-QFN |
| 标准包装： | 73 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 90% |
| 电源电压： | 4.5 V ~ 36 V |
| 降压： | 是 |
| 升压： | 无 |
| 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 ~ 85°C |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 包装： | 管件 |
LTC3823
PIN FUNCTIONS
(UH/GN)
PGND (Pin 22/Pin 22): Power Ground. Connect this pin
closely to the source of the bottom N-channel MOSFET,
the (–) terminal of C VCC and C IN .
SENSE – (Pin 23/Pin 23): Current Sense Comparator In-
put. The negative input to the current comparator is used
to accurately Kelvin sense the bottom side of the sense
resistor or MOSFET.
SENSE + (Pin 24/Pin 24): Current Sense Comparator
Input. The positive input to the current comparator is
normally connected to the SW node unless using a sense
resistor.
SW (Pin 25/Pin 25): Switch Node. The (–) terminal of the
bootstrap capacitor, C B , connects here. This pin swings
from a diode drop below ground up to V IN .
TG (Pin 26/Pin 26): Top Gate Drive Output. This pin drives
the top N-channel MOSFET with a voltage swing equal to
INTV CC , superimposed on the switch node voltage SW.
BOOST (Pin 27/Pin 27): Boosted Floating Driver Supply.
The (+) terminal of the bootstrap capacitor, C B , connects
here. This pin swings from a diode voltage drop below
INTV CC up to V IN + INTV CC .
Z0 (Pin 28/Pin 28): Dead Time Control Input. Applying a
DC voltage at this pin will vary the dead time between TG
low and BG high transition. Do not force a voltage higher
than INTV CC on this pin.
FCB (Pin 29/Pin 1): Forced Continuous Input. Connect
this pin to SGND to forced continuous synchronization
operation at low load, to INTV CC to enable discontinuous
mode operation at low load, or to a resistive divider from
a secondary output when using a secondary winding.
RUN (Pin 30/Pin 2): Run Control Input. A voltage above
1.5V turns on the IC. Forcing this pin below 1.5V shuts
down the device.
V ON (Pin 31/Pin 3): On-Time Input. Connecting this pin
to the output voltage makes the on-time proportional to
V OUT . The comparator input defaults to 0.6V when the
pin is grounded and defaults to 4.8V when the pin is tied
to INTV CC .
PGOOD (Pin 32/Pin 4): Power Good Output. Open-drain
logic that is pulled to ground when the output voltage is
not within ±11% of the regulation point after the internal
20μs power bad mask timer expires.
SGND (Exposed Pad Pin 33, UH Package): The exposed
pad is signal ground. It must be soldered to PCB ground
for electrical contact and for rated thermal performance.
3823fd
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3823IGN#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP 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) |
| LTC3823IGN#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-DOWN DC/DC CTRL SSOP-28 |
| LTC3823IGN#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP 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:2,500 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) |
| LTC3823IUH#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:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LTC3823IUH#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-DOWN DC/DC CONTROLLER QFN32 |
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