參數(shù)資料
型號(hào)： LTC3618EUF#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 8 A DUAL SWITCHING CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PQCC24
封裝： 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24
文件頁(yè)數(shù)： 23/24頁(yè)
文件大?。?/td> 603K
代理商： LTC3618EUF#TRPBF
LTC3618
8
3618f
PIN FUNCTIONS
PHASE (Pin 1/Pin 4): Phase Shift Selection. If pin is tied
to SGND, the phase between SW1 and SW2 will be 0°.
Tying PHASE to SVIN will select 180° phase shift. With
the PHASE pin tied to half of the SVIN voltage, 90° phase
shift will be selected.
VFB2 (Pin 2/Pin 5): Voltage Feedback Input Pin for VTT.
See VFB1.
ITH2 (Pin 3/Pin 6): Error Amplier Compensation of VTT.
See ITH1.
VDDQIN (Pin 4 /Pin 7): External Reference Input. An
internal resistor divider to the error amplier sets the
output voltage of VTT. VFB2 will regulate to VDDQIN 0.5.
SGND (Pin 5/Pin 8): Signal Ground. All small-signal and
compensation components should connect to this ground
pin which, in turn, should be connected to PGND at one
point.
PVIN2 (Pins 6, 7/Pins 9, 10) VTT Power Supply Input.
See PVIN1.
SW2 (Pins 8, 9/Pins 11, 12): VTT Switch Node. See SW1.
RUN2 (Pin 10/Pin 13): Enable Pin for VTT. See RUN1.
RUN1 (Pin 11/Pin 14): Enable Pin for VDDQ. Forcing RUN1
above the input threshold voltage enables the output SW1
of VDDQ. Forcing both RUNx pins to ground shuts down
the LTC3618. In shutdown, all functions are disabled and
the LTC3618 draws <1μA of supply current.
RT (Pin 12/Pin 15): Oscillator Frequency. This pin provides
two modes of setting the switching frequency.
1. Connecting a resistor from RT to ground will set the
switching frequency based on the resistor value.
2. Tying this pin to SVIN enables the internal 2.25MHz
oscillator frequency.
PGOOD2 (Pin 13/Pin 16): Power Good Output for
VTT. See PGOOD1.
VTTR (Pin 14 /Pin 17): Voltage Buffer Output. This pin is
the output of an internal voltage buffer whose voltage is
equal to VDDQIN 0.5. Output current capability is ±10mA.
Do not exceed 0.1μF capacitance on this pin. This output
is enabled/disabled by RUN2.
PGOOD1 (Pin 15/Pin 18): Power Good Output Pin for
VDDQ. The open-drain output will be pulled down to ground
if the FB1 voltage of the channel is not within the power
good voltage window. The PGOOD1 will also be pulled
down if the channel is not enabled with the RUN1 pin or an
undervoltage at SVIN is detected. The power good window
moves in relation to the actual TRACK/SS1 pin voltage.
SW1 (Pins 17, 16/Pins 19, 20): VDDQ Switch Node.
Connection to the external inductor. This pin connects to
the drains of the internal synchronous power MOSFET
switches.
PVIN1 (Pins 18, 19/Pins 21, 22): VDDQ Power Supply
Inputs. These pins connect to the source of the internal
power P-channel MOSFET of VDDQ. PVIN1 and PVIN2 are
independent of each other. They may connect to equal or
lower supplies than SVIN.
SVIN (Pin 20/Pin 23) Signal Input Supply. This pin pow-
ers the internal control circuitry and is monitored by the
undervoltage lockout comparator.
TRACK/SS1 (Pin 21/Pin 24): Internal, External Soft-Start,
External Reference Input for VDDQ. The type of start-up be-
havior for VDDQ is programmable with the TRACK/SS1 pin:
1. Internal soft-start with xed timing can be programmed
by tying TRACK/SS1 to SVIN.
2. External soft-start can be programmed with the timing
set by a capacitor to ground and a resistor to SVIN.
3. Tracking the start-up behavior of another supply is
programmable (see the Applications Information
section).
4. The pin can be used as external reference input.
(FE/UF)
相關(guān)PDF資料
PDF描述
LTC3618IFE#PBF 8 A DUAL SWITCHING CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PDSO24
LTC3618EFE#TRPBF 8 A DUAL SWITCHING CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PDSO24
LTC3620EDC#PBF SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
LTC3620EDC#TRMPBF SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
LTC3620EDC-1#PBF SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LTC3618IFE#TRPBF 功能描述:IC REG DUAL SYNC 3A BUCK 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
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LTC3618IUF#TRPBF 功能描述:IC REG DUAL SYNC 3A BUCK 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC3619BEDD#PBF 功能描述:IC REG BUCK SYNC ADJ DL 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2
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