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參數(shù)資料
| 型號(hào)： | LTC3446IDE#PBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 2/20頁(yè) |
| 文件大小： | 283K |
| 描述： | IC REG TRPL BCK/LINEAR 14-DFN |
| 標(biāo)準(zhǔn)包裝： | 91 |
| 拓?fù)洌?/td> | 降壓（降壓）同步（1），線性（LDO）（2） |
| 功能： | 任何功能 |
| 輸出數(shù)： | 3 |
| 頻率 - 開(kāi)關(guān)： | 2.25MHz |
| 電壓/電流 - 輸出 1： | 可調(diào)至0.8V，1A |
| 電壓/電流 - 輸出 2： | 可調(diào)至0.4V，300mA |
| 電壓/電流 - 輸出 3： | 可調(diào)至0.4V，300mA |
| 帶 LED 驅(qū)動(dòng)器： | 無(wú) |
| 帶監(jiān)控器： | 無(wú) |
| 帶序列發(fā)生器： | 無(wú) |
| 電源電壓： | 0.9 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-WFDFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 14-DFN-EP（4x3） |
| 包裝： | 管件 |
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LTC3446
2
3446ff
pin conFiguraTion
absoluTe MaxiMuM raTings
V
IN
, LV
IN
to GND ......................................... 0.3V to 6V
MODESEL, ENBUCK, ENLDO1,
ENLDO2 to GND .......................................... 0.3V to 6V
BUCKFB to GND .......................................... 0.3V to 6V
LV
FB1
, LV
FB2
to GND .................................... 0.3V to 6V
I
TH
to GND ..... 0.3V to the Lesser of (V
IN
+ 0.3V) or 3V
SW to GND ......0.3V to the Lesser of (V
IN
+ 0.3V) or 6V
LV
OUT1
, LV
OUT2
to GND ..........0.3V to the Lesser of (LV
IN
+ 0.3V) or 6V
PGOOD to GND ............................................0.3V to 6V
LV
OUT1
, LV
OUT2
Short-Circuit
to GND Duration ...............................................Indefinite
Operating Junction Temperature Range
(Note 2) ..................................................40癈 to 125癈
Storage Temperature Range .................. 65癈 to 150癈
(Note 1)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
SW
ENBUCK
BUCKFB
ENLDO1
LV
FB1
LV
FB2
ENLDO2
MODESEL
V
IN
I
TH
PGOOD
LV
OUT1
LV
IN
LV
OUT2
TOP VIEW
DE PACKAGE
14-LEAD (4mm ?3mm) PLASTIC DFN
15
T
JMAX
= 125癈, ?/DIV>
JA
= 43癈/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3446EDE#PBF
LTC3446EDE#TRPBF 3446
14-Lead (4mm ?3mm) Plastic DFN 40癈 to 125癈
LTC3446IDE#PBF
LTC3446IDE#TRPBF 3446
14-Lead (4mm ?3mm) Plastic DFN 40癈 to 125癈
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V
IN
Input Voltage Range
(Note 3)
?/DIV>
2.7
5.5
V
V
UVLO
V
IN
Undervoltage Lockout Threshold
V
IN
Undervoltage Lockout Hysteresis
V
IN
Rising
?/DIV>
2.37
10
2.5
30
V
mV
I
Q
V
IN
Quiescent Current (Note 4)
Buck Enabled Only, Not Sleeping
Buck Enabled Only, Sleeping
One LDO Enabled Only
All Three Outputs Enabled, Buck Not Sleeping
All Three Outputs Enabled, Buck Sleeping
Shutdown
V
BUCKFB
= 0V, I
SW
= 0mA
V
BUCKFB
= 1V, I
SW
= 0mA
V
LVIN
= 1.5V, 10礎(chǔ) LDO Output Load
V
BUCKFB
= 0V, I
SW
= 0mA, V
LVIN
= 1.5V,
10礎(chǔ) Output Load on Each LDO
V
BUCKFB
= 1V, I
SW
= 0mA, V
LVIN
= 1.5V,
10礎(chǔ) Load on Each LDO
V
ENBUCK
= 0V, V
ENLDO1
= 0V, V
ENLDO2
= 0V
310
50
75
400
140
500
75
100
600
210
1
礎(chǔ)
礎(chǔ)
礎(chǔ)
礎(chǔ)
礎(chǔ)
礎(chǔ)
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25癈. V
IN
= 3.6V unless otherwise specified. (Note 2)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3446IDE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators |
| LTC3447 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:I2C Controllable Buck Regulator in 3mm × 3mm DFN |
| LTC3447EDD | 功能描述:IC REG BUCK SYNC ADJ 0.6A 10DFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)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(kāi)關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無(wú) 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(yīng)商設(shè)備封裝:8-SOIC |
| LTC3447EDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 0.6A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)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(kāi)關(guān):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(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3447EDD#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.5V to 5.5V 10-Pin DFN EP T/R |
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