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參數(shù)資料
| 型號： | LT1373 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 250kHz Low Supply Current High Efficiency 1.5A Switching Regulator(250kHz ，低電源電流1.5A,高效率開關(guān)穩(wěn)壓器) |
| 中文描述： | 250kHz至低電源電流高效率1.5A的開關(guān)穩(wěn)壓器（250kHz至，低電源電流1.5A的，高效率開關(guān)穩(wěn)壓器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 188K |
| 代理商： | LT1373 |
1
LT1373
250kHz Low Supply Current
High Efficiency
1.5A Switching Regulator
DESCRIPTIOU
I
Boost Regulators
I
CCFL Backlight Driver
I
Laptop Computer Supplies
I
Multiple Output Flyback Supplies
I
Inverting Supplies
The LT
1373 is a low supply current high frequency
current mode switching regulator. It can be operated in all
standard switching configurations including boost, buck,
flyback, forward, inverting and “Cuk.” A 1.5A high effi-
ciency switch is included on the die, along with all oscilla-
tor, control and protection circuitry. All functions of the
LT1373 are integrated into 8-pin SO/PDIP packages.
Compared to the 500kHz LT1372, which draws 4mA of
quiescent current, the LT1373 switches at 250kHz, typi-
cally consumes only 1mA and has higher efficiency. High
frequency switching allows for small inductors to be used.
All surface mount components consume less than 0.6
square inch of board space.
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.
I
1mA I
Q
at 250kHz
I
Uses Small Inductors: 15
μ
H
I
All Surface Mount Components
I
Only 0.6 Square Inch of Board Space
I
Low Minimum Supply Voltage: 2.7V
I
Constant Frequency Current Mode
I
Current Limited Power Switch: 1.5A
I
Regulates Positive or Negative Outputs
I
Shutdown Supply Current: 12
μ
A Typ
I
Easy External Synchronization
I
8-Pin SO or PDIP Packages
, LTC and LT are registered trademarks of Linear Technology Corporation.
OUTPUT CURRENT (mA)
1
70
E
80
90
10
100
1000
LT1373 TA02
60
50
100
V
= 5V
f = 250kHz
LT1373
V
IN
V
C
5V
1
2
8
5
4
6, 7
SUMIDA CD75-220KC (22
μ
H) OR
COILCRAFT D03316-153 (15
μ
H)
AVX TPSD226M025R0200
GND
FB
LT1373 TA01
V
SW
S/S
L1*
22
μ
H
C1**
22
μ
F
C4**
22
μ
F
C2
0.01
μ
F
R3
5k
R2
24.9k
1%
R1
215k
1%
*
**
V
OUT
12V
MAX I
OUT
L1
15
μ
H
22
μ
H
D1
MBRS120T3
ON
OFF
I
OUT
0.3A
0.35A
+
+
5V-to-12V Boost Converter
12V Output Efficiency
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
相關(guān)PDF資料 |
PDF描述 |
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| LT1374C | Synchronous 4-Bit Up/Down Binary Counters With 3-State Outputs 20-PDIP 0 to 70 |
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| LT1374IR-SYNC | TERM. F/O CABLE ST-ST/ DPLX/RISER/5M/GREEN |
| LT1374IS8-SYNC | TERM. F/O CABLE ST-ST/ DPLX/RISER/1M/YELLOW |
| LT1374CS8-SYNC | TERM. F/O CABLE ST-ST/ DPLX/RISER/10M/YELLOW |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT13735IS8 | 制造商:Linear Technology 功能描述: |
| LT1373CN8 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 2.7V to 25V 8-Pin PDIP N |
| LT1373CN8#PBF | 功能描述:IC REG MULTI CONFIG ADJ 8DIP 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:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT1373CN8PBF | 制造商:Linear Technology 功能描述:LT1373CN8PBF |
| LT1373CS8 | 功能描述:IC REG MULTI CONFIG ADJ 8SOIC 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:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
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