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參數(shù)資料
| 型號(hào)： | L6730TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Adjustable step-down controller with synchronous rectification |
| 中文描述： | 可調(diào)式降壓同步整流控制器 |
| 文件頁數(shù)： | 4/52頁 |
| 文件大?。?/td> | 1370K |
| 代理商： | L6730TR |
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Summary description
L6730 - L6730B
4/52
1
Summary description
The controller is an integrated circuit
... designed using BiCMOS-DMOS, v5 (BCD5) technology
that
provides complete control logic and protection for high
performance, step-down DC/DC
and niPOL
converters.
It is designed to drive N-Channel MOSFETs in a synchronous rectified
buck converter
topology.
The output voltage of the converter can be precisely regulated down to 600mV, with a
maximum tolerance of ±0.8%, or to 1.2V, when one of the internal references is used. It is also
possible to use an external reference from 0V to 2.5V.
The input voltage can range from 1.8V to 14V, while the supply voltage can range from 4.5V to
14V. High peak current gate drivers provide for fast switching to the external power section and
the output current can be in excess of 20A, depending on the number of the external MOSFETs
used. The PWM duty cycle can range from 0% to 100% with a minimum on-time (T
ON(MIN)
)
lower than 100ns, making conversions with a very low duty cycle and very high switching
frequency possible.
The device provides voltage-mode control. It includes a 400kHz free-running oscillator that is
adjustable from 100kHz to 1MHz. The error amplifier features a 10MHz gain-bandwidth-product
and 5V/μs slew-rate that permits to realize high converter bandwidth for fast transient response.
The device monitors the current by using the R
DS(ON)
of both the high-side and low-side
MOSFET(s), eliminating the need for a current sensing resistor and guaranteeing an effective
over current-protection in all the application conditions. When necessary, two different current
limit protections can be externally set through two external resistors. A leading edge adjustable
blanking time is also available to avoid false over-current-protection (OCP) intervention in every
application condition.
It is possible to select the HICCUP mode or the constant current protection (L6730B) after the
soft-start phase.
During this phase constant current protection is provided. It is possible to select the sink-source
or the source-only mode capability
(before the device powers on)
by acting on a multifunction
pin (L6730). The L6730 disables the sink mode capability during the soft-start in order to allow
a proper start-up also in pre-biased output voltage conditions. The L6730B can always sink
current and, so it can be used to supply the DDR Memory BUS termination. Other features
include Master-Slave synchronization (with 180° phase shift), Power-Good with adjustable
delay, over voltage-protection, feed back disconnection, selectable UVLO threshold (5V and
12V Bus), and thermal shutdown. The HTSSOP20 package allows the realization for very
compact DC/DC converters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6731B | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj. Step-Down w/ Synch Rectification RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| L6731BTR | 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| L6731D | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| L6731DTR | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| L6732 | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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