參數(shù)資料
型號： LTC3445
廠商： Linear Technology Corporation
英文描述： 12-Bit To 24-Bit Multiplexed D-Type Latch With 3-State Outputs 56-SSOP -40 to 85
中文描述： 降壓穩(wěn)壓器的I2C可控雙采用4mm？4mm QFN封裝LDO的
文件頁數(shù)： 3/24頁
文件大小： 465K
代理商： LTC3445
3
LTC3445
3445fa
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC1
= V
CC2
= 3.6V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
I
S
PARAMETER
Additional Input DC Bias Current For Buck
Active Mode
Sleep Mode
Nominal Oscillator Frequency
CONDITIONS
(Note 4)
V
OUT
= 90%, I
LOAD
= 0A
V
OUT
= 103%, I
LOAD
= 0A
V
OUT
= 100%
V
OUT
= 0V
I
SW
= 100mA
I
SW
= –100mA
V
RUN
= 0V, V
SW
= 0V or 5V, V
CC1
= 5V
MIN
TYP
MAX
UNITS
220
6
1.5
300
0.45
0.325
1
μ
A
μ
A
f
OSC
●
1.2
1.8
MHz
kHz
R
PFET
R
NFET
I
LSW
LDO1
I
S
V
OUT
R
DS(ON)
of P-Channel FET
R
DS(ON)
of N-Channel FET
SW Leakage
μ
A
Additional DC Bias for LDO1
Regulated Output Voltage
23
30
μ
A
V
2.5V < V
IN
< 5.5V, 1mA < I
LOAD
< 50mA
0.582
V
CC2
–
0.3
5
15
Line Regulation
Load Regulation
Dropout Voltage
LDO Feedback Voltage
V
CC2
= 2.5V to 5.5V, I
LOAD
= 1mA, V
OUT
= 1.2V
V
CC2
= 2.5V,
I
LOAD
= 1mA to 50mA, V
OUT
= 1.2V
I
LOAD
= 50mA
I
LOAD
= 0mA
1
mV
mV
0.3
0.6
V
V
V
FB
LDO2
I
S
V
OUT
●
0.582
0.618
Additional DC Bias for LDO2
Regulated Output Voltage
23
30
μ
A
V
2.5V < V
IN
< 5.5V, 1mA < I
LOAD
< 50mA
0.582
V
CC2
–
0.3
5
15
Line Regulation
Load Regulation
Dropout Voltage
LDO Feedback Voltage
V
CC2
= 2.5V to 5.5V, I
LOAD
= 1mA, V
OUT
= 1.2V
V
CC2
= 2.5V,
I
LOAD
= 1mA to 50mA, V
OUT
= 1.2V
I
LOAD
= 50mA
I
LOAD
= 0mA
1
mV
mV
0.3
0.6
V
V
V
FB
PowerPath Controller
V
TRACK
●
0.582
0.618
Tracked Input Voltage
3
V
CC1
–
0.2
0.2
V
V
TRACK
–
V
CC
BATT
V
BACKUP
I
BACKUP
V
CC
BATT
I
VCCBATT
BATTFAULT V
CC1
High Level (Good)
V
CC1
Low Level (Bad)
Hysteresis
I
2
C Interface
f
I2C(MAX)
t
BUF
Bus Free Time Between Stop and Start
Condition
t
HD(RSTA)
Hold Time After (Repeated)
Start Condition
Tracked Output Voltage at V
CC
BATT
3V < V
TRACK
< V
CC1
– 0.2V
–0.2
0
V
Backup Battery Voltage
Backup Battery Bias Current
V
CC
BATT Output
Max V
CC
BATT Output Current
2
5.5
6.5
3.1
V
V
CC1
= V
TRACK
= 0V, V
BACKUP
= 2.5V
V
TRACK
= 0V, V
CC1
= 4V, I
VCCBAT
= 8mA
V
CC1
= 2.5V
Where BATTFAULT Goes High
Where BATTFAULT Goes Low
V
CC1
= 0V to 4.2V, 4.2 to 0V
4
3
8
μ
A
V
mA
2.85
2.65
2.4
2.8
2.5
0.3
2.9
2.6
V
V
V
Maximum I
2
C Operating Frequency
(Note 5)
(Note 5)
400
1.3
kHz
μ
s
(Note 5)
600
ns
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相關代理商/技術參數(shù)
參數(shù)描述
LTC3445EUF 制造商:Linear Technology 功能描述:Conv DC-DC Triple Step Down 2.5V to 5.5V 24-Pin QFN EP
LTC3445EUF#PBF 功能描述:IC REG TRPL BUCK/LINEAR 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標準包裝:2,500 系列:- 拓撲: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: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:* 供應商設備封裝:* 包裝:*
LTC3445EUF#TR 制造商:Linear Technology 功能描述:Conv DC-DC Triple Step Down 2.5V to 5.5V 24-Pin QFN EP T/R
LTC3445EUF#TRPBF 功能描述:IC REG TRPL BUCK/LINEAR 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標準包裝:2,500 系列:- 拓撲: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: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:* 供應商設備封裝:* 包裝:*
LTC3446 制造商:LINER 制造商全稱:Linear Technology 功能描述:Monolithic Buck Regulator with Dual VLDO Regulators
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