- 您现在的位置：买卖IC网 > PDF目录15503 > LTC3823IGN#PBF (Linear Technology)IC REG CTRLR BUCK PWM CM 28-SSOP PDF资料下载
参数资料
| 型号： | LTC3823IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 28-SSOP |
| 标准包装： | 49 |
| 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： | 28-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1336 (CN2011-ZH PDF) |
LTC3823
PIN FUNCTIONS
(UH/GN)
V RNG (Pin 1/Pin 5): Sense Voltage Range Input. The volt-
age at this pin is ten times the nominal sense voltage at
maximum output current and can be set from 0.5V to 2V
by a resistive divider from INTV CC . The nominal sense
voltage defaults to 50mV when this pin is tied to ground
and 200mV when tied to INTV CC . Do not set this voltage
between 0.5V to ground and 2V to INTV CC .
V FB (Pin 2/Pin 6): Error Ampli?er Feedback Input. This pin
connects the error ampli?er input to an external resistive
divider from V OUT .
I TH (Pin 3/Pin 7): Current Control Threshold and Error
Ampli?er Compensation Point. The current comparator
threshold increases with this control voltage. The voltage
ranges from 0V to 2.4V with 0.75V corresponding to zero
sense voltage (zero current).
SGND (Pin 4/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.
I ON (Pin 5/Pin 9): On-Time Current Input. Tie a resistor
from this pin to ground to set the one-shot timer current
and thereby, set the switching frequency.
V DIFFOUT (Pin 6/Pin 10): Output of Remote Sensing Dif-
ferential Ampli?er. Connect this to V FB directly or through
a resistive divider.
V OUTSENSE + (Pin 8/Pin 11): This is the positive sense pin
for the remote sense differential ampli?er. Connect this pin
to the positive terminal of the output load capacitor.
V OUTSENSE – (Pin 9/Pin 12): This is the negative sense pin
for the remote sense differential ampli?er. Connect this pin
to the negative terminal of the output load capacitor.
NC (Pins 7, 10, UH Package): No Connect.
TRACK/SS (Pin 11/Pin 13): Output Voltage Tracking and
Soft-Start Input. When the IC is con?gured to be the
master of two outputs, a capacitor to ground at this pin
sets the ramp rate for the output voltage. When the IC is
con?gured to be the slave of two outputs, the V FB voltage
of the master IC is reproduced by a resistive divider and
applied to this pin during the soft-start phase. An internal
PLLFLTR (Pin 12/Pin 14): The phase-locked loop’s lowpass
?lter is tied to this pin. The voltage at this pin defaults to
1.180V when the IC is not synchronized with an external
clock at the PLLIN pin.
PLLIN (Pin 13/Pin 15): External Synchronization Input to
Phase Detector. This pin is internally terminated to SGND
with a 50k resistor.
V IN (Pin 14/Pin 16): Main Input Supply. Decouple this to
PGND with a capacitor (0.1μF to 1μF).
V INSNS (Pin 15, UH Package): V IN Voltage Sense Input.
Normally this pin is tied to V IN . However, in certain ap-
plications when the IC is powered from a separate supply,
V INSNS is tied to the upper MOSFET supply to sense the
V IN voltage. This pin is co-bonded with V IN in the GN
package.
ZV CC (Pin 16/Pin 17): Post-Package Zener Trim Supply.
Under normal conditions this pin should always be con-
nected to INTV CC .
Z1/SS ENABLE (Pin 17/Pin 18): Post-Package Zener Trim
Control. This pin is a multifunctional pin used in produc-
tion for post-package trimming and tracking. Ground this
pin under normal soft-start operation. Connecting this
pin to INTV CC will turn off the soft-start current during
tracking.
Z2 (Pin 18/Pin 19): Post-Package Zener Trim Control.
This pin is used in production for post-package trimming.
Ground this pin under normal operation.
INTV CC (Pin 19/Pin 20): Internal 5V Regulated Output. The
control circuits are powered from this voltage. Decouple
this pin to PGND with a minimum of 4.7μF low ESR tan-
talum or ceramic capacitor.
DRV CC (Pin 20, UH Package): Driver Voltage Input. Must
be connected to INTV CC externally. Do not exceed 7V at
this pin. This pin is co-bonded to INTV CC internally in the
GN package.
BG (Pin 21/Pin 21): Bottom Gate Driver Output. This pin
drives the gate of the bottom N-channel MOSFET between
ground and INTV CC .
1.7μA soft-start current is charging this pin during the
soft-start phase.
3823fd
7
相关PDF资料 |
PDF描述 |
|---|---|
| SPD62-682M | INDUCTOR PWR SHIELDED 6.80UH SMD |
| MIC2186YM | IC REG CTRLR BST FLYBK CM 16SOIC |
| MIC2185YM | IC REG CTRLR BST PWM CM 16-SOIC |
| MIC2184YM | IC REG CTRLR BUCK PWM CM 16-SOIC |
| SPD62-472M | INDUCTOR PWR SHIELDED 4.70UH SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LTC3823IUH#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:- 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) |
| LTC3824EMSE | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 4V to 60V Input 10-Pin MSOP EP |
| LTC3824EMSE#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 10-MSOP 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 |
发布紧急采购，3分钟左右您将得到回复。