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參數(shù)資料
| 型號(hào)： | LT3464 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower Boost Converter with Integrated Schottky and Output Disconnect in ThinSOT |
| 中文描述： | SWITCHING REGULATOR, UUC8 |
| 封裝： | DIE-8 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大小： | 260K |
| 代理商： | LT3464 |
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LT3464
6
3464i
The LT3464 uses a constant off-time control scheme in
conjunction with Burst Mode
operation to provide high
efficiency over a wide range of output current. Operation
can best be understood by studying the above diagram.
When the FB pin voltage is lower than the 1.25V reference,
the hysteretic comparator enables the power section,
causing the chip to start switching, thus charging the
output capacitor. When the output voltage increases
enough to overcome the hysteresis, the feedback com-
parator shuts off the power section leaving only low
power circuitry running until the output voltage falls
again. This cycle repeats, keeping the output voltage
within a small window. The switching action is as follows:
The switch turns on, and current through it starts to ramp
OPERATIOU
up until the point where the current limit is reached, at
which point the switch turns off for a fixed amount of time.
While the switch is off the inductor is delivering current to
the load. When the off time expires, the switch turns on
again until the current limit is reached, and the cycle
repeats.
This chip includes an internal power Schottky diode and a
PNP transistor for output disconnect. The PNP transistor
disconnects the load from the input during shutdown. The
PNP control circuitry is designed to keep the PNP out of
saturation across a wide range of current, to keep quies-
cent current to a minimum and to provide current limiting
to protect the chip during short-circuit conditions.
Burst Mode is a registered a trademark of Linear Technolgy Corporation.
BLOCK DIAGRA
S
R
Q
Q
DELAY
–
–
+
–
+
12mV
OUT
OUT
V
REF
1.25V
CTRL
V
IN
7
SW
6
GND
OUT
3
ANTI
SAT
4
8
1
2
5
SHDN
FB
CAP
3464 BD
C
PL
0.1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT3464ETS8 | Micropower Boost Converter with Integrated Schottky and Output Disconnect in ThinSOT |
| LT3465 | 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT |
| LT3465A | Single Cell 350mA LED Driver |
| LT3465ES6 | 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT |
| LT3465AES6 | 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3464_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower Boost Converter with Schottky and Output Disconnect in ThinSOT? |
| LT3464ETS8 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 2.3V to 10V 8-Pin TSOT-23 |
| LT3464ETS8#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 2.3V to 10V 8-Pin TSOT-23 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, CUT TAPE 85mA Boost Converter w/intnl Schottky |
| LT3464ETS8#TR | 功能描述:IC REG BOOST ADJ 115MA TSOT23-8 RoHS:否 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:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LT3464ETS8#TRM | 功能描述:IC REG BOOST ADJ 115MA TSOT23-8 RoHS:否 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:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
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