参数资料
型号: LTC3859IUHF#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PQCC38
封装: 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38
文件页数: 4/42页
文件大小: 624K
代理商: LTC3859IUHF#PBF
LTC3859
12
3859fa
PIN FUNCTIONS
TRACK/SS1, TRACK/SS2, SS3 (Pins 34, 16, 3/Pins 38,
20, 7): External Tracking and Soft-Start Input. For the buck
channels, the LTC3859 regulates the VFB1,2 voltage to the
smaller of 0.8V, or the voltage on the TRACK/SS1,2 pin. For
the boost channel, the LTC3859 regulates the VFB3 voltage
to the smaller of 1.2V, or the voltage on the SS3 pin. An
internal 1μA pull-up current source is connected to this pin.
A capacitor to ground at this pin sets the ramp time to nal
regulated output voltage. Alternatively, a resistor divider on
another voltage supply connected to the TRACK/SS pins
of the buck channels allow the LTC3859 buck outputs to
track the other supply during start-up.
ITH1, ITH2, ITH3 (Pins 35, 15, 7/Pins 1, 19, 11): Error
Amplier Outputs and Switching Regulator Compensation
Points. Each associated channel’s current comparator trip
point increases.
VFB1, VFB2, VFB3 (Pins 36, 14, 6/Pins 2, 18, 10): Receives
the remotely sensed feedback voltage for each controller
from an external resistive divider across the output.
SENSE1+,SENSE2+,SENSE3+(Pins37,13,4/Pins3,17,8):
The (+) Input to the Differential Current Comparators.
The ITH pin voltage and controlled offsets between the
SENSEand SENSE+ pins in conjunction with RSENSEsetthe
current trip threshold. For the boost channel, the SENSE3+
pin supplies current to the current comparator.
SENSE1, SENSE2, SENSE3(Pins 38, 12, 5/Pins 4,
16, 9): The (–) Input to the Differential Current Compara-
tors. When SENSE1,2for the buck channels is greater
than INTVCC, then SENSE1,2pin supplies current to the
current comparator.
PGND (Exposed Pad Pin 39): Driver Power Ground. Con-
nects to the sources of bottom (synchronous) N-channel
MOSFETs and the (–) terminal(s) of CIN. The exposed
pad must be soldered to the PCB for rated electrical and
thermal performance.
(QFN/TSSOP)
相关PDF资料
PDF描述
LRS-59-28 1-OUTPUT 1456 W AC-DC REG PWR SUPPLY MODULE
LPT44-T 3-OUTPUT 55 W AC-DC REG PWR SUPPLY MODULE
LM2576HVBU 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSSO5
LWT-30H-5FF 3-OUTPUT 30 W AC-DC REG PWR SUPPLY MODULE
LC7136 PLL FREQUENCY SYNTHESIZER, 20 MHz, PDIP20
相关代理商/技术参数
参数描述
LTC3860EUH#PBF 功能描述:IC REG CTRLR BUCK PWM VM 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® 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
LTC3860EUH#PBF 制造商:Linear Technology 功能描述:BUCK DC/DC CONVERTER IC
LTC3860EUH#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 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)
LTC3860IUH#PBF 功能描述:IC REG CTRLR BUCK PWM VM 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:2,000 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)
LTC3860IUH#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 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)