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參數(shù)資料
| 型號： | LTC3829IFE#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO38 |
| 封裝： | 4.4 MM, LEAD FREE, PLASTIC, TSSOP-38 |
| 文件頁數(shù)： | 40/40頁 |
| 文件大?。?/td> | 478K |
| 代理商： | LTC3829IFE#TRPBF |
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LTC3829
3829f
pin FuncTions
DIFFN (Pin 1/Pin 3): Negative Input of Remote Sensing
Differential Amplifier. Connect this to the remote load
ground pin.
DIFFP (Pin 2/Pin 4): Positive Input of Remote Sensing
Differential Amplifier. Connect this to the remote load
positive terminal directly.
RUN (Pin 3/Pin 5): Run Control Input. A voltage above
1.22V on this pin turns on the IC. There is a 1.0A pull-up
current for this pin. Once the RUN pin rises above 1.22V,
an additional 4.5A pull-up current is added to the pin.
AVP (Pin 4/Pin 6): Active Voltage Positioning Load Slope
Programming Pin. A resistor tied between this pin and the
DIFFP pin sets the load slope.
SENSE1+, SENSE2+, SENSE3+ (Pins 5, 7, 11/Pins 7, 9,
13): Current Sense Comparator Inputs. The (+) inputs to
the current comparators are normally connected to DCR
sensing networks or current sensing resistors.
SENSE1–, SENSE2–, SENSE3– (Pins 6, 8, 12/Pins 8, 10,
14): Current Sense Comparator Inputs. The (–) inputs to
the current comparators are connected to the output.
TK/SS (Pin 9/Pin 11): Output Voltage Tracking and Soft-
Start Input. When one particular IC is configured to be the
master of two ICs, a capacitor to ground at this pin sets
the ramp rate for the master IC’s output voltage. When the
IC is configured to be the slave of two ICs, the VFB voltage
of the master IC is reproduced by a resistor divider and
applied to this pin. An internal soft-start current of 1.25A
is charging this pin.
FREQ (Pin 10/Pin 12): There is a precision 10A current
sourced out of this pin. A resistor to ground sets a voltage
which in turn programs the frequency. Alternatively, this
pin can be driven with a DC voltage to vary the frequency
of the internal oscillator.
VFB (Pin 13/Pin 15): Error Amplifier Feedback Input. This
pin receives the remotely sensed feedback voltage from
an external resistive divider.
ITH (Pin 14/Pin 16): Current Control Threshold and Error
Amplifier Compensation Point. Each associated channels’
current comparator tripping threshold increases with this
ITH control voltage.
(UHF/FE)
ISET (Pin 15/Pin 17): Stage Shedding Comparator and
Burst Mode Comparator Programming Pin. A resistor to
groundprogramsthestagesheddingcomparatorthreshold
or Burst Mode comparator threshold and its current limit
depending on MODE pin setting.
ILIM (Pin 16/Pin 18): Current Comparator Sense Voltage
Range Pin. This pin is to be programmed to SGND, FLOAT
or INTVCC to set the maximum current sense threshold to
one of three different levels for each comparator.
PGOOD (Pin 17/Pin 19): Power Good Indicator Output.
Open-drain logic out that is pulled to ground when the
output exceeds ±10% regulation window after the internal
100s power bad mask timer expires.
PLLIN (Pin 18/Pin 20): External Synchronization Pin. A
clock on the pin synchronizes the internal oscillator with
the clock on this pin.
EXTVCC (Pin 23/Pin 25): External Power Input to an
Internal Switch Connected to INTVCC. This switch closes
and supplies the IC power, bypassing the internal low
dropout regulator, whenever EXTVCC is higher than 4.7V.
Do not exceed 6V on this pin and ensure VIN > VEXTVCC
at all times.
INTVCC(Pin24/Pin26): Internal5VRegulatorOutput.The
control circuits are powered from this voltage. Decouple
this pin to PGND with a minimum of 4.7F low ESR tan-
talum or ceramic capacitor.
VIN (Pin 25/Pin 27): Main Input Supply. Decouple this pin
to PGND with a capacitor (0.1F to 1F).
BG1, BG2, BG3 (Pins 30, 29, 22/Pins 32, 31, 24): Bottom
Gate Driver Outputs. These pins drive the gates of the bot-
tom N-channel MOSFETs between PGND and INTVCC.
SW1, SW2, SW3 (Pins 31, 28, 21/Pins 33, 30, 23):
Switch Node Connections to Inductors. Voltage swing
at these pins is from a Schottky diode (external) voltage
drop below ground to VIN.
TG1,TG2,TG3(Pins32,27,20/Pins34,29,22):TopGate
Driver Outputs. These are the outputs of floating drivers
with a voltage swing equal to INTVCC superimposed on
the switch nodes voltages.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3829IUHF#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 38-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 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:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LTC3829IUHF#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 38-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 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:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LTC3830-1ES8 | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LTC3830-1ES8#PBF | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LTC3830-1ES8#TR | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)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) |
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