參數(shù)資料
型號： LTC3890MPUH#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32
封裝： 5 X 5 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-220WHHD, QFN-32
文件頁數(shù)： 38/38頁
文件大?。?/td> 381K
代理商： LTC3890MPUH#TRPBF
LTC3890
9
3890fa
TG1, TG2 (Pin 26, Pin 15): High Current Gate Drives for
Top N-Channel MOSFETs. These are the outputs of float-
ing drivers with a voltage swing equal to INTVCC – 0.5V
superimposed on the switch node voltage SW.
PGOOD1, PGOOD2 (Pin 27, Pin 14): Open-Drain Logic
Output. PGOOD1,2 is pulled to ground when the voltage
on the VFB1,2 pin is not within ±10% of its set point.
ILIM (Pin 28): Current Comparator Sense Voltage Range
Inputs. Tying this pin to SGND, FLOAT or INTVCC sets the
maximum current sense threshold to one of three different
levels for both comparators.
TRACK/SS1, TRACK/SS2 (Pin 29, Pin 13): External
Tracking and Soft-Start Input. The LTC3890 regulates the
VFB1,2 voltage to the smaller of 0.8V or the voltage on the
TRACK/SS1,2 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 final regulated output voltage.
PIN FUNCTIONS
Alternatively, a resistor divider on another voltage supply
connected to this pin allows the LTC3890 output to track
the other supply during start-up.
ITH1, ITH2 (Pin 30, Pin 12): Error Amplifier Outputs and
Switching Regulator Compensation Points. Each associ-
ated channel’s current comparator trip point increases
with this control voltage.
VFB1, VFB2 (Pin 31, Pin 11): Receives the remotely sensed
feedback voltage for each controller from an external
resistive divider across the output.
SENSE1+, SENSE2+ (Pin 32, Pin 10):
The (+) input to the
differential current comparators are normally connected
to DCR sensing networks or current sensing resistors.
The ITH pin voltage and controlled offsets between the
SENSE– and SENSE+ pins in conjunction with RSENSE set
the current trip threshold.
相關PDF資料
PDF描述
LTC3890EUH#PBF DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32
LTC3890IUH#TRPBF DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32
LTC3890HUH#PBF DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32
LTC3890HUH#TRPBF DUAL SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PQCC32
LTC3891HFE#TRPBF SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO20
相關代理商/技術參數(shù)
參數(shù)描述
LTC3891EFE#PBF 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LTC3891EFE#PBF 制造商:Linear Technology 功能描述:IC DC-DC CONV 900kHz TSSOP20
LTC3891EFE#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC3891EUDC#PBF 功能描述:IC REG CTRLR BUCK PWM CM 20-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LTC3891EUDC#PBF 制造商:Linear Technology 功能描述:IC DC-DC CONV 900kHz QFN20
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