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參數(shù)資料
| 型號(hào)： | LT1371 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 500kHz High Efficiency 3A Switching Regulator(500kHz ，3A,高效率開關(guān)穩(wěn)壓器) |
| 中文描述： | 500kHz的高效率3A開關(guān)穩(wěn)壓器（為500kHz，3A等，高效率開關(guān)穩(wěn)壓器） |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 273K |
| 代理商： | LT1371 |
1
LT1371
500kHz High Efficiency
3A Switching Regulator
The LT
1371 is a monolithic high frequency current mode
switching regulator. It can be operated in all standard
switching configurations including boost, buck, flyback,
forward, inverting and “Cuk.” A 3A high efficiency switch
is included on the die, along with all oscillator, control and
protection circuitry.
The LT1371 typically consumes only 4mA quiescent
current and has higher efficiency than previous parts.
High frequency switching allows for very small inductors
to be used.
New design techniques increase flexibility and maintain
ease of use. Switching is easily synchronized to an exter-
nal logic level source. A logic low on the Shutdown pin
reduces supply current to 12
μ
A. Unique error amplifier
circuitry can regulate positive or negative output voltage
while maintaining simple frequency compensation tech-
niques. Nonlinear error amplifier transconductance re-
duces output overshoot on start-up or overload recovery.
Oscillator frequency shifting protects external compo-
nents during overload conditions.
DESCRIPTIO
N
U
I
Faster Switching with Increased Efficiency
I
Uses Small Inductors: 4.7
μ
H
I
All Surface Mount Components
I
Low Minimum Supply Voltage: 2.7V
I
Quiescent Current: 4mA Typ
I
Current Limited Power Switch: 3A
I
Regulates Positive or Negative Outputs
I
Shutdown Supply Current: 12
μ
A Typ
I
Easy External Synchronization
I
Boost Regulators
I
Laptop Computer Supplies
I
Multiple Output Flyback Supplies
I
Inverting Supplies
APPLICATIO
S
U
TYPICAL APPLICATIO
N
U
5V to 12V Boost Converter
OUTPUT CURRENT (A)
0.01
50
E
60
70
80
90
0.1
1
LT1371 TA02
100
V
IN
= 5V
12V Output Efficiency
LT1371
V
IN
V
C
5V
GND
FB
LT1371 TA01
V
SW
S/S
L1*
4.7
μ
H
C1**
22
μ
F
25V
C4**
22
μ
F
25V
×
2
C2
0.047
μ
F
C3
0.0047
μ
F
R3
2k
R2
6.19k
1%
R1
53.6k
1%
V
OUT
12V
D1
MBRS330T3
ON
OFF
*
SUMIDA CD104-100MC (10
μ
H)
AVX TPSD226M025R0200
L1
4.7
μ
H
10
μ
H
0.8A
**
COILCRAFT DO3316P-472 (4.7
μ
H),
μ
H) OR
+
+
I
OUT
0.7A
OUT
FEATURES
, LTC and LT are registered trademarks of Linear Technology Corporation.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1371CR | 功能描述:IC REG MULTI CONFIG ADJ 3A D2PAK 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 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:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1371CR#PBF | 功能描述:IC REG MULTI CONFIG ADJ 3A D2PAK 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)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1371CR#PBF | 制造商:Linear Technology 功能描述:ICSMPS CONTROLLERCURRENT-MOD 制造商:Linear Technology 功能描述:IC,SMPS CONTROLLER,CURRENT-MODE,BIPOLAR, |
| LT1371CR#TR | 功能描述:IC REG MULTI CONFIG ADJ 3A D2PAK 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 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:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1371CR#TRPBF | 功能描述:IC REG MULTI CONFIG ADJ 3A D2PAK 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 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:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
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