參數(shù)資料
型號(hào): LT1938IDD#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 4 A SWITCHING REGULATOR, 3300 kHz SWITCHING FREQ-MAX, PDSO10
封裝: 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10
文件頁(yè)數(shù): 10/24頁(yè)
文件大?。?/td> 260K
代理商: LT1938IDD#PBF
LT1938
18
1938fa
maximum load current should be derated as the ambient
temperature approaches 125°C.
Power dissipation within the LT1938 can be estimated by
calculatingthetotalpowerlossfromanefficiencymeasure-
ment and subtracting the catch diode loss and inductor
loss. The die temperature is calculated by multiplying the
LT1938 power dissipation by the thermal resistance from
junction to ambient.
Figure 9. A Well Chosen Input Network Prevents Input Voltage Overshoot and
Ensures Reliable Operation when the LT1938 is Connected to a Live Supply
APPLICATIONS INFORMATION
+
LT1938
4.7F
VIN
20V/DIV
IIN
10A/DIV
20s/DIV
VIN
CLOSING SWITCH
SIMULATES HOT PLUG
IIN
(9a)
(9b)
LOW
IMPEDANCE
ENERGIZED
24V SUPPLY
STRAY
INDUCTANCE
DUE TO 6 FEET
(2 METERS) OF
TWISTED PAIR
+
LT1938
4.7F
0.1F
0.7
VIN
20V/DIV
IIN
10A/DIV
20s/DIV
DANGER
RINGING VIN MAY EXCEED
ABSOLUTE MAXIMUM RATING
(9c)
+
LT1938
4.7F
22F
35V
AI.EI.
1938 F09
VIN
20V/DIV
IIN
10A/DIV
20s/DIV
+
Other Linear Technology Publications
Application Notes 19, 35 and 44 contain more detailed
descriptions and design information for buck regulators
and other switching regulators. The LT1376 data sheet
has a more extensive discussion of output ripple, loop
compensation and stability testing. Design Note 100
shows how to generate a bipolar output supply using a
buck regulator.
相關(guān)PDF資料
PDF描述
LT1956-5EGN 3 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16
LT1956-5IGN 3 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16
LT1961IMS8E#TR 3 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO8
LT3092ITS8#PBF SPECIALTY ANALOG CIRCUIT, PDSO8
LT3092ETS8#TRPBF SPECIALTY ANALOG CIRCUIT, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1939 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT1939EDD#PBF 功能描述:IC REG DL BUCK/LINEAR 12DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓(降壓)同步(3),線性(LDO)(2) 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
LT1939EDD#TRPBF 功能描述:IC REG DL BUCK/LINEAR 12DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓(降壓)同步(3),線性(LDO)(2) 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
LT1939EDD-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT1939EDD-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller