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參數(shù)資料
| 型號： | LTC1174 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | High Efficiency Step-Down and Inverting DC/DC Converter(高效率,反相DC/DC變換器) |
| 中文描述： | 高效率降壓和倒轉(zhuǎn)DC / DC轉(zhuǎn)換器（高效率，反相直流/直流變換器） |
| 文件頁數(shù)： | 5/20頁 |
| 文件大小： | 246K |
| 代理商： | LTC1174 |
5
LTC1174
LTC1174-3.3/LTC1174-5
Supply Current in Shutdown
Switch Resistance vs
Input Voltage
Efficiency vs Input Voltage
DC Supply Current
Operating Frequency
vs V
IN
– V
OUT
Off-Time vs Output Voltage
SW (Pin 5):
Drain of the P-Channel MOSFET Switch. Cathode
of Schottky diode must be closely connected to this pin.
V
IN
(Pin 6):
Input Supply Voltage. It must be decoupled
close to ground Pin 4.
I
PGM
(Pin 7):
Selects the Current Limit of the P-Channel
Switch. With I
PGM
= V
IN
, the current trip point is 600mA and
with I
PGM
= 0V, the current trip value is reduced to 340mA.
SHUTDOWN (Pin 8):
Pulling this pin to ground keeps the
internal switch off and puts the LTC1174 in micropower
shutdown.
V
OUT
(V
FB
) (Pin 1):
For the LTC1174, this pin connects to the
main voltage comparator’s input. On the LTC1174-3.3 and
LTC1174-5 this pin goes to an internal resistive divider
which sets the output voltage.
LB
OUT
(Pin 2):
Open Drain of an N-Channel Pull-Down. This
pin will sink current when Pin 3 (LB
IN
) goes below 1.25V.
During shutdown the state of this pin is indeterminate.
LB
IN
(Pin 3):
The “–” Input of the Low-Battery Voltage
Comparator. The “+” input is connected to a reference
voltage of 1.25V.
GND (Pin 4):
Ground Pin.
TYPICAL PERFOR U
INPUT VOLTAGE (V)
5
E
7
9
10
14
1174 G10
6
8
11
12
13
95
94
93
92
91
90
89
V
= 5V
L = 100
μ
H
COIL = CTX100-4
I
LOAD
= 300mA
PGM
= V
IN
I
LOAD
= 100mA
I
PGM
= 0V
INPUT VOLTAGE (V)
0
S
μ
A
8
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1174 G11
4
14
2
6
10
12
SHUTDOWN = 0V
T
= 25
°
C
CURRENT INTO PIN 6 ONLY
INPUT VOLTAGE (V)
0
S
μ
A
500
450
400
350
300
250
200
150
100
50
0
4
8
10
1174 G12
2
6
12
14
ACTIVE MODE
I
PGM
= V
IN
SLEEP MODE
I
PGM
= 0V
T
A
= 25
°
C
(V
IN
– V
OUT
) VOLTAGE (V)
0
N
9
1174 G13
2
5
7
2.0
1.5
1.0
0.5
0
1
3
4
6
8
V
OUT
= 5V
T
A
= 25
°
C
T
A
= 70
°
C
INPUT VOLTAGE (V)
4
R
(
)
12
1174 G14
6
8
10
14
16
18
20
T
A
= 25
°
C
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
LTC1174HV
LTC1174
OUTPUT VOLTAGE (V)
0
O
μ
s
50
40
30
20
10
0
4
1174 G15
1
2
3
5
LTC1174-5
LTC1174HV-5
LTC1174-3.3
LTC1174HV-3.3
PIU
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1174-3.3 | High Efficiency Step-Down and Inverting DC/DC Converter(高效率,步降DC/DC變換器) |
| LTC1174-5 | High Efficiency Step-Down and Inverting DC/DC Converter(高效率,步降DC/DC變換器) |
| LTC1177-12 | Isolated High Side MOSFET Drivers(隔離型高邊MOS場效應(yīng)管驅(qū)動器（輸入電流2.5mA）) |
| LTC1177-5 | Isolated High Side MOSFET Drivers(隔離型高邊MOS場效應(yīng)管驅(qū)動器（輸入電流1mA）) |
| LTC1196 | 8-Bit, SO-8,1MSPS ADCs(SO-8封裝，8位，1MSPS，模數(shù)轉(zhuǎn)換器（差分輸入）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1174_06 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Efficiency Step-Down and Inverting DC/DC Converter |
| LTC1174-3.3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Efficiency Step-Down and Inverting DC/DC Converter |
| LTC1174-3.3/ LTC1174-5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Efficiency Step-Down and Inverting DC/DC Converter |
| LTC1174-5 | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:高效率步降和逆變DC / DC轉(zhuǎn)換器 |
| LTC1174CN8 | 功能描述:IC REG BUCK INV ADJ 1A 8DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
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