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參數(shù)資料
| 型號(hào)： | LT1942EUF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| 中文描述： | 4 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WGGD, QFN-24 |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 248K |
| 代理商： | LT1942EUF |
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LT1942
2
1942fa
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
http://www.linear.com/leadfree/V
CC
Voltage............................................................. 16V
SW1, SW2, SW3 Voltage.......................... –0.4V to 36V
SW4.......................................................... –0.4V to 45V
FB1, FB3 Voltage ................................................... 2.5V
FB4 Voltage ....................................................... 400mV
NFB2 Voltage................................................... –200mV
SHDN Voltage......................................................... 10V
CTRL4 Voltage........................................................ 16V
SS1, SS4 Voltage .................................................. 1.5V
Current Into D2......................................................... 1A
D2 Voltage............................................................ –36V
Current Out of D3 ..................................................... 1A
D3 Voltage.............................................................. 36V
Current Out of D4 ..................................................... 4A
D4 Voltage.............................................................. 45V
LED1, LED2 Voltage ............................................... 45V
Current Into LED1, LED2 ..................................... 35mA
PGOOD Voltage ...................................................... 16V
V
OUT3
Voltage ......................................................... 36V
CT Current ...........................................................
±
1mA
Maximum Junction Temperature......................... 125
°
C
Operating Temperature Range (Note 2).. –40
°
C to 85
°
C
Storage Temperature Range................ –65
°
C to 125
°
C
ORDER PART
NUMBER
LT1942EUF
(Note 1)
ABSOLUTEW
W
W
U
PACKAGE/ORDER U
U
W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
T
JMAX
= 125
°
C,
θ
= 37
°
C/W,
θ
= 4.3
°
C/W
EXPOSED PAD (PIN 25) IS SGND
(MUST BE SOLDERED TO PCB)
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 3.3V, V
SHDN
= V
IN
, unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
Quiescent Current
V
SHDN
= 3.3V, V
CTRL4
= 0V, Not Switching
V
SHDN
= V
CTRL4
= 0V, In Shutdown
Input Voltage Range
V
CC
Pin
AV
DD
Feedback Voltage
FB1 Pin
AV
DD
Feedback Pin Bias Current (FB1)
FB1 Pin (Note 3)
AV
DD
Feedback Voltage for Power Good Signal
FB1 Pin Voltage as a Percent of Nominal Voltage
V
OFF
Feedback Voltage
NFB2 Pin
V
OFF
Feedback Pin Bias Current (NFB2)
NFB2 Pin (Note 3)
V
ON
Feedback Voltage
FB3 Pin
V
ON
Feedback Pin Bias Current (FB3)
FB3 Pin (Note 3)
LED Feedback Voltage
FB4 Pin, V
CTRL4
= 3.3V
LED Feedback Pin Bias Current (FB4)
FB4 Pin (Note 3)
LED Feedback Voltage with Dimming
FB4 Pin, V
CTRL4
= 1V
MIN
TYP
7
0
MAX
10
1
16
1.275
60
100
–140
60
1.275
60
210
60
105
UNITS
mA
●
●
μ
A
V
V
nA
%
mV
nA
●
2.6
1.225
●
1.25
15
97
–150
25
1.25
25
200
20
95
●
95
–160
1.225
V
nA
mV
μ
A
mV
●
190
85
ELECTRICAL CHARACTERISTICS
24 23 22 21 20 19
7
8
9
TOP VIEW
25
UF PACKAGE
24-LEAD (4mm
×
4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
PGND23
SW3
D3
V
OUT3
FB3
NFB2
LED1
LED2
D4
FB4
FB1
PGOOD
S
D
V
C
P
S
S
S
C
C
A
S
S
UF PART
MARKING
1942
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1942EUF#PBF | 功能描述:IC REG SW QUAD TFT LCD 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| LT1942EUF#TRPBF | 功能描述:IC REG SW QUAD TFT LCD 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| LT1942EUFPBF | 制造商:Linear Technology 功能描述:Conv DC-DC Quad Inv/Step-Up 16V QFN24EP |
| LT1943 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| LT1943_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Current Quad Output Regulator for TFT LCD Panels |
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