參數(shù)資料
型號(hào)： LTC1474IS8-3.3
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Low Quiescent Current High Efficiency Step-Down Converters
中文描述： 0.75 A SWITCHING REGULATOR, PDSO8
封裝： 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù)： 3/20頁(yè)
文件大?。?/td> 350K
代理商： LTC1474IS8-3.3
3
LTC1474/LTC1475
SYMBOL
V
FB
PARAMETER
Feedback Voltage
LTC1474/LTC1475
Regulated Output Voltage
LTC1474-3.3/LTC1475-3.3
LTC1474-5/LTC1475-5
Feedback Current
LTC1474/LTC1475 Only
No Load Supply Current (Note 3)
Output Voltage Line Regulation
Output Voltage Load Regulation
Output Ripple
Input DC Supply Current (Note 2)
Active Mode (Switch On)
Sleep Mode (Note 3)
Shutdown
Switch Resistance
Current Comp Max Current Trip Threshold
CONDITIONS
I
LOAD
= 50mA
MIN
1.205
TYP
1.230
MAX
1.255
UNITS
G
V
V
OUT
I
LOAD
= 50mA
G
G
3.234
4.900
3.300
5.000
0
3.366
5.100
30
V
V
I
FB
G
nA
I
SUPPLY
V
OUT
I
LOAD
= 0 (Figure 1 Circuit)
V
IN
= 7V to 12V, I
LOAD
= 50mA
I
LOAD
= 0mA to 50mA
I
LOAD
= 10mA
(Exclusive of Driver Gate Charge Current)
V
IN
= 3V to 18V
V
IN
= 3V to 18V
V
IN
= 3V to 18V, V
RUN
= 0V
I
SW
= 100mA
R
SENSE
= 0
R
SENSE
= 1.1
10
5
2
50
μ
A
mV
mV
20
15
mV
P-P
I
Q
100
9
6
1.4
400
76
100
5
4.75
65
1.23
0.7
0.7
0.70
0.8
0.015
0
0
175
15
12
1.6
μ
A
μ
A
μ
A
mA
mA
mV
mV
μ
s
μ
s
R
ON
I
PEAK
325
70
90
85
110
V
SENSE
V
HYST
t
OFF
Current Comp Sense Voltage Trip Threshold
Voltage Comparator Hysteresis
Switch Off-Time
G
V
OUT
at Regulated Value
V
OUT
= 0V
3.5
6.0
V
LBI, TRIP
V
RUN
V
LBI, OFF
I
LBO, SINK
I
RUN, SOURCE
I
SW, LEAK
I
LBI, LEAK
I
LBO, LEAK
Low Battery Comparator Threshold
Run/ON Pin Threshold
OFF Pin Threshold (LTC1475 Only)
Sink Current into Pin 2
Source Current from Pin 8
Switch Leakage Current
Leakage Current into Pin 3
Leakage Current into Pin 2
G
1.16
0.4
0.4
0.45
0.4
1.27
1.0
1.0
V
V
V
V
LBI
= 0V, V
LBO
= 0.4V
V
RUN
= 0V
V
IN
= 18V, V
SW
= 0V, V
RUN
= 0V
V
LBI
= 18V, V
IN
= 18V
V
LBI
= 2V, V
LBO
= 5V
mA
μ
A
μ
A
μ
A
μ
A
1.2
1
0.1
0.5
ELECTRICAL CHARACTERISTICS
T
A
= 25
°
C, V
IN
= 10V, V
RUN
= open, R
SENSE
= 0, unless otherwise noted.
The
G
denotes specifications which apply over the full operating
temperature range.
N
ote 1:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LTC1474CS8/LTC1475CS8: T
J
= T
A
+ (P
D
110
°
C/W)
LTC1474CMS8/LTC1475CMS8: T
J
= T
A
+ (P
D
150
°
C/W)
Note 2
: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 3
: No load supply current consists of sleep mode DC current (9
μ
A
typical) plus a small switching component (about 1
μ
A for Figure 1 circuit)
necessary to overcome Schottky diode and feedback resistor leakage.
相關(guān)PDF資料
PDF描述
LTC1474IS8-5 Low Quiescent Current High Efficiency Step-Down Converters
LTC1475CMS8-3.3 Low-Power LinCMOS(TM) Dual Comparator 8-CDIP -55 to 125
LTC1475CMS8-5 Low Quiescent Current High Efficiency Step-Down Converters
LTC1475CS8 Low-Power LinCMOS(TM) Dual Comparator 8-SOIC -55 to 125
LTC1475CS8-3.3 Low-Power LinCMOS(TM) Dual Comparator 8-SOIC -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1474IS8-5 功能描述:IC REG BUCK 5V 0.75A 8SOIC 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開(kāi)關(guān):- 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(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
LTC1474IS8-5#PBF 功能描述:IC REG BUCK 5V 0.75A 8SOIC 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開(kāi)關(guān):- 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(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
LTC1474IS8-5#TR 功能描述:IC REG BUCK 5V 0.75A 8SOIC 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開(kāi)關(guān):- 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(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
LTC1474IS8-5#TRPBF 功能描述:IC REG BUCK 5V 0.75A 8SOIC 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:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開(kāi)關(guān):- 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(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
LTC1474IS8-5PBF 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 3-18V SOIC8
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