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參數資料
| 型號： | LT1939IDD#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數： | 24/24頁 |
| 文件大小： | 349K |
| 描述： | IC REG DL BUCK/LINEAR 12DFN |
| 標準包裝： | 2,500 |
| 拓撲： | 降壓（降壓）（1），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數： | 2 |
| 頻率 - 開關： | 500kHz ~ 2.4MHz |
| 電壓/電流 - 輸出 1： | 0.8 V ~ 24.25 V，2A |
| 電壓/電流 - 輸出 2： | 0.8 V ~ 24.25 V，1A |
| 帶 LED 驅動器： | 無 |
| 帶監控器： | 無 |
| 帶序列發生器： | 無 |
| 電源電壓： | 3 V ~ 25 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 12-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 12-DFN |
| 包裝： | 帶卷 (TR) |
LT1939
24
1939f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
?/DIV>
FAX: (408) 434-0507
?
www.linear.com
?LINEAR TECHNOLOGY CORPORATION 2008
LT 0108 " PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION
COMMENTS
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60V, 1.2A (I
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V
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: 5.5V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 2.5mA, I
SD
= 25糀,
16-Lead TSSOPE Package
LT1933
36V, 500mA (I
OUT
), 500kHz Step-Down Switching Regulator in
SOT-23
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.6mA, I
SD
< 1糀,
ThinSOT
TM
Package
LT1936
36V, 1.4A (I
OUT
), 500kHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.9mA, I
SD
< 1糀,
8-Lead MS8E Package
LT1940
Dual 25V, 1.4A (I
OUT
), 1.1MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 1.20V, I
Q
= 3.8mA, I
SD
< 30糀,
16-Lead TSSOPE Package
LTC3407/LTC3407-2 Dual 600mA/800mA, 1.5MHz/2.25MHz Synchronous Step-Down
DC/DC Converter
V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40糀, I
SD
< 1糀,
3mm ?3mm DFN and 10-Lead MS10E Packages
LT3434/LT3435 60V, 2.4A (I
OUT
), 200kHz/500kHz High Ef ciency Step-Down DC/DC
Converters with Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 100糀, I
SD
< 1糀,
16-Lead TSSOPE Package
LT3437
60V, 400mA (I
OUT
), Micropower Step-Down DC/DC Converter with
Burst Mode Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.25V, I
Q
= 100糀, I
SD
< 1糀,
10-Lead 3mm ?3mm DFN, 16-Lead TSSOPE Package
LT3493
36V, 1.4A (I
OUT
), 750kHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 1.9mA, I
SD
< 1糀,
6-Lead 2mm ?3mm DFN Package
LT3501
Dual 25V, 3A (I
OUT
), 1.5MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.3V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.7mA, I
SD
< 10糀,
20-Lead TSSOPE Package
LT3502/LT3502A 40V, 500mA (I
OUT
), 1.1MHz/2.2MHz High Ef ciency Step-Down
DC/DC Converter
V
IN
: 3V to 40V, V
OUT(MIN)
= 0.8V, I
Q
= 1.5mA, I
SD
< 2糀,
8-Lead 2mm ?2mm DFN Package
LT3503
20V, 1A (I
OUT
), 2.2MHz High Ef ciency Step-Down DC/DC Converter V
IN
: 3.6V to 20V, V
OUT(MIN)
= 0.78V, I
Q
= 1.9mA, I
SD
< 1糀,
6-Lead 2mm ?3mm DFN Package
LT3505
36V, 1.2A (I
OUT
), 3MHz High Ef ciency Step-Down DC/DC Converter V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.78V, I
Q
= 2mA, I
SD
< 2糀,
8-Lead 3mm ?3mm DFN and MSE Packages
LT3506/LT3506A Dual 25V, 1.6A (I
OUT
), 575kHz/1.1MHz High Ef ciency Step-Down
DC/DC Converters
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.8mA, I
SD
< 30糀,
16-Lead 4mm ?5mm DFN and TSSOPE Packages
LT3508
Dual 36V, 1.4A (I
OUT
), 2.5MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 4.3mA, I
SD
< 1糀,
24-Lead 4mm ?4mm QFN and 16-Lead TSSOPE Packages
LT3510
Dual 25V, 2A (I
OUT
), 1.5MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.3V to 25V, V
OUT(MIN)
= 0.8V, I
Q
= 3.7mA, I
SD
< 10糀,
20-Lead TSSOPE Package
LTC3548
Dual 400mA/800mA, 2.25MHz Synchronous Step-Down DC/DC
Converter
V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40糀, I
SD
< 1糀,
3mm ?3mm DFN and 10-Lead MSE Packages
LT3680
36V, 3.5A (I
OUT
), 2.4MHz High Ef ciency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 0.79V, I
Q
= 75糀, I
SD
< 1糀,
3mm ?3mm DFN and MS10E Packages
LT3500
40V, 2A (I
OUT
), 2.2MHz High Ef ciency Step-Down DC/DC Converter V
IN
: 28V to 36V, V
OUT(MIN)
= 0.8V, I
Q
= 75糀, I
SD
< 12糀,
3mm ?3mm DFN
1.8V/2A Step-Down Regulator
L1
2.2糎
D1
D2
C1
2.2糉
C2
0.47糉
C5
0.47糉
C7
22糉
C3
220pF
R5
40.2k
R2
8.06k
R6
49.9k
R1
10k
R3
24.9k
R4
8.06k
4.5V TO 25V
C6
1糉
1939 TA05
V
OUT1
1.8V
2A
V
OUT2
3.3V
10mA
LDRV
V
IN
LFB
BST
SHDN
SS
LT1939
R
T
/SYNC
V
C
SW
FB
PG
PG
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1940 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Synchronous,400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
| LT1940EFE | 功能描述:IC REG BUCK ADJ 1.4A DL 16TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 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 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1940EFE#PBF | 功能描述:IC REG BUCK ADJ 1.4A DL 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數: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） 產品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1940EFE#TR | 功能描述:IC REG BUCK ADJ 1.4A DL 16TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 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 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1940EFE#TRPBF | 功能描述:IC REG BUCK ADJ 1.4A DL 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 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 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
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