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參數(shù)資料
| 型號： | LT1776IS8#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 230 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 224K |
| 代理商： | LT1776IS8#TR |
1
LT1776
Wide Input Range,
High Efficiency, Step-Down
Switching Regulator
FEATURES
DESCRIPTION
U
The LT
1776 is a wide input range, high efficiency Buck
(step-down) switching regulator. The monolithic die in-
cludes all oscillator, control and protection circuitry. The
part can accept input voltages as high as 60V and contains
an output switch rated at 700mA peak current. Current
mode control delivers excellent dynamic input supply
rejection and short-circuit protection.
The LT1776 contains several features to enhance effi-
ciency. The internal control circuitry is normally powered
via the VCC pin, thereby minimizing power drawn directly
from the VIN supply (see Applications Information). The
action of the LT1776 switch circuitry is also load depen-
dent. At medium to high loads, the output switch circuitry
maintains fast rise time for good efficiency. At light loads,
rise time is deliberately reduced to avoid pulse skipping
behavior.
The available SO-8 package and 200kHz switching fre-
quency allow for minimal PC board area requirements.
TYPICAL APPLICATION
U
s
Wide Input Range: 7.4V to 40V
s
Tolerates Input Transients to 60V
s
700mA Peak Switch Rating
s
Adaptive Switch Drive Maintains Efficiency at High
Load Without Pulse Skipping at Light Load
s
True Current Mode Control
s
200kHz Fixed Operating Frequency
s
Synchronizable to 400kHz
s
Low Supply Current in Shutdown: 30
A
s
Available in 8-Pin SO and PDIP Packages
39
F
63V
1776 F01
VIN
VCC
VSW
LT1776
FB
VC
SHDN
SYNC
2
5
4
3
7
8
1
6
GND
+
100
F
10V
+
MBR160
36.5k
1%
5V
400mA
12.1k
1%
22k
100
H*
2200pF
VIN
8V TO 40V
100pF
*43T #30 ON MAGNETICS
MPP #55030
Efficiency vs VIN and ILOAD
LOAD CURRENT (mA)
1
60
EFFICIENCY
(%)
70
80
90
10
100
1000
1776 TA01
50
40
30
20
VIN = 10V
VIN = 20V
VIN = 30V
VIN = 40V
Figure 1
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIONS
U
s
Automotive DC/DC Converters
s
Cellular Phone Battery Charger Accessories
s
IEEE 1394 Step-Down Converters
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PDF描述 |
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| LT1871IMS-7#PBF | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
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| LT1871EMS-7#PBF | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| LT1871EMS-7 | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1777 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Noise Step-Down Switching Regulator |
| LT1777C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Noise Step-Down Switching Regulator |
| LT1777CS | 功能描述:IC REG BUCK ADJ 0.7A 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應商設備封裝:8-SOIC |
| LT1777CS#PBF | 功能描述:IC REG BUCK ADJ 0.7A 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝: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: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) 供應商設備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1777CS#TR | 功能描述:IC REG BUCK ADJ 0.7A 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應商設備封裝:8-SOIC |
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