參數(shù)資料
型號: LTC3445EUF#TRPBF
廠商: Linear Technology
文件頁數(shù): 4/24頁
文件大?。?/td> 475K
描述: IC REG TRPL BUCK/LINEAR 24-QFN
標(biāo)準(zhǔn)包裝: 2,500
拓?fù)洌?/td> 降壓(降壓)(1),線性(LDO)(2)
功能: 任何功能
輸出數(shù): 3
頻率 - 開關(guān): 1.5MHz
電壓/電流 - 輸出 1: 0.85 V ~ 1.55 V,600mA
電壓/電流 - 輸出 2: 可調(diào)至0.6V,50mA
電壓/電流 - 輸出 3: 可調(diào)至0.6V,50mA
帶 LED 驅(qū)動器:
帶監(jiān)控器:
帶序列發(fā)生器:
電源電壓: 2.5 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 24-QFN 裸露焊盤(4x4)
包裝: 帶卷 (TR)
4
LTC3445
3445fa
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3445EUF is guaranteed to meet performance specifica-
tions from 0癈 to 70癈. Specifications over the 40癈 to 85癈 operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ELECTRICAL CHARACTERISTICS
Note 3: T
J
 is calculated from the ambient temperature, T
A
, and power
dissipation, P
D
, according to the following formula:
T
J
 = T
A
 + P
D
 " 37癈/W
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: Determined by design, not production tested.
The ?/SPAN> denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
 = 25?/SPAN>C. V
CC1
 = V
CC2
 = 3.6V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL   PARAMETER
CONDITIONS
MIN   TYP   MAX    UNITS
t
SU(RSTA)
Repeated Start Condition Setup Time    (Note 5)
600
ns
t
SU(STOP)
Stop Condition Setup Time
(Note 5)
600
ns
t
HD(DIN)
Data Hold Time, Input
(Note 5)
0
ns
t
SU(DAT)
Data Setup Time
(Note 5)
100
ns
V
THR
SCL and SDA Logic Input Threshold
1.8
V
V
HYS
SCL and SDA Logic Input Hysteresis    (Note 5)
50
mV
I
LVTRACK
V
TRACK
 Leakage
V
CC
 = 3.6V
1.44   2.2
礎(chǔ)
I
LVBACKUP
V
BACKUP
 Leakage
V
CC
 = 3.6V
?/DIV>
1
礎(chǔ)
I
LADD7
ADD7 Leakage
V
CC
 = 3.6V
?/DIV>
1
礎(chǔ)
I
LADD6
ADD6 Leakage
V
CC
 = 3.6V
?/DIV>
1
礎(chǔ)
I
LSCL
SCL Leakage
V
CC
 = 3.6V
?/DIV>
1
礎(chǔ)
I
LSDA
SCL Leakage
V
CC
 = 3.6V
?/DIV>
1
礎(chǔ)
I
LLDO1
LDO1 Leakage
V
CC
 = 3.6V, RUN = 0
?/DIV>
1
礎(chǔ)
I
LLDO2
LDO2 Leakage
V
CC
 = 3.6V, RUN = 0
?/DIV>
1
礎(chǔ)
I
LLDO1FB
LDO1FB Leakage
V
CC
 = 3.6V, RUN = 0
?/DIV>
1
礎(chǔ)
I
LLDO2FB
LDO2FB Leakage
V
CC
 = 3.6V, RUN = 0
?/DIV>
1
礎(chǔ)
I
LBATTFAULT
BATTFAULT Leakage
V
CC
 = 3.6V
?/DIV>
1
礎(chǔ)
I
FB1,2
LDO Feedback Input Current
V
FB1
 = 0.6V
?/DIV>
1
礎(chǔ)
TYPICAL PERFOR A CE CHARACTERISTICS
W
Supply Current vs Supply Voltage
SUPPLY VOLTAGE (V)
2.4
300
400
500
3.6
4.4
5.6
3445 G01
200
100
0
2.8 3.2
4
4.8  5.2
ALL ON
BUCK
TWO LDOs
RUN = HIGH
RUN = LOW
ONE LDO
V
OUT
 vs DAC
DAC VALUE
0
1.2
1.4
80
3445 G02
1.0
0.8
20
40
60
10
30
50
70
1.6
1.1
1.3
0.9
1.5
0mA
600mA
DAC VALUE
0
0.008
0.010
0.012
80
0.006
0.004
0.002
20
40
60
10
30
50
70
0.002
0
0.016
0.014
100mA
V
OUT
 Step Size vs DAC
相關(guān)PDF資料
PDF描述
LTC3446IDE#PBF IC REG TRPL BCK/LINEAR 14-DFN
LTC3537EUD#TRPBF IC REG DL BST/LINEAR SYNC 16-QFN
LTC3541EDD#TRPBF IC REG DL BCK/LINEAR SYNC 10-DFN
LTC3670EDDB#TRPBF IC REG TRPL BCK/LINEAR 12DFN
LTC3672BEDC-1#TRPBF IC REG TRPL BCK/LINEAR 8-DFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3446 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators
LTC3446EDE 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators
LTC3446EDE#PBF 功能描述:IC REG TRPL BCK/LINEAR 14-DFN 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:*
LTC3446EDE#TRPBF 功能描述:IC REG TRPL BCK/LINEAR 14-DFN 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:*
LTC3446EDE-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators