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參數(shù)資料
| 型號： | LTC3423EMS |
| 廠商： | Linear Integrated Systems |
| 英文描述： | Low Output Voltage 3MHz Micropower Synchronous Boost Converters |
| 中文描述： | 低輸出電壓3MHz的微功率同步升壓轉換器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 203K |
| 代理商： | LTC3423EMS |
5
LTC3423/LTC3424
34234f
TYPICAL PERFOR U
Burst Mode Operation Current
R
t
(Pin 1):
Timing Resistor to Program the Oscillator
Frequency.
f
R
Hz
OSC
t
=
3 10
10
MODE/SYNC (Pin 2):
Burst Mode Select and Oscillator
Synchronization.
MODE/SYNC = High. Enable Burst Mode operation. The
inductor peak inductor current will be 400mA and
return to zero current on each cycle. During Burst Mode
operation the operation is variable frequency, providing
a significant efficiency improvement at light loads. It is
recommended the Burst Mode operation only be en-
tered once the part has started up.
MODE/SYNC = Low. Disable Burst Mode operation and
maintain low noise, constant frequency operation.
MODE/SYNC = External CLK. Synchronization of the
internal oscillator and Burst Mode operation disable. A
clock pulse width of 100ns to 2
μ
s is required to
synchronize.
V
IN
(Pin 3):
Voltage Sense for Internal Circuitry.
PIU
SW (Pin 4):
Switch Pin. Connect inductor and optional
Schottky diode here. Minimize trace length to keep EMI
down.
GND (Pin 5):
Signal and Power Ground for the IC.
V
DD
(Pin 6):
Power Source for the IC. Typically derived
from a higher voltage power converter. Requires an input
of 2.7V to 5.5V. A 2.2
μ
F ceramic bypass capacitor is
recommended as close to the pins as possible.
V
OUT
(Pin 7):
Output of the Synchronous Rectifier.
FB (Pin 8):
Feedback Pin. Connect resistor divider tap
here. The output voltage can be adjusted from 1.5V to
5.5V. The feedback reference voltage is typically 1.25V.
V
C
(Pin 9):
Error Amp Output. A frequency compensation
network is connected to this pin to compensate the loop.
See the section “Compensating the Feedback Loop” for
guidelines.
SHDN (Pin 10):
Shutdown. Grounding this pin shuts down
the IC. Tie to >1V to enable (V
DD
or digital gate output).
During shutdown the output voltage will hold up to V
IN
minus a diode drop due to the body diode of the PMOS
synchronous switch. If the application requires a com-
plete disconnect during shutdown then refer to section
“Output Disconnect”.
Shutdown Threshold
TEMPERATURE (
°
C)
–55
V
0.80
65
125
3423/24 G13
0.70
0.60
–15
25
105
0.90
1.00
1.10
0.75
0.65
0.85
0.95
1.05
TEMPERATURE (
°
C)
–55
C
μ
A
36
38
65
125
3423/24 G14
34
32
30
–15
25
105
40
42
44
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相關代理商/技術參數(shù) |
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| LTC3423EMS#PBF | 功能描述:IC REG BOOST SYNC ADJ 1A 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 產(chǎn)品培訓模塊:MIC23xxx HyperLight Load™ Regulators 標準包裝:5,000 系列:HyperLight Load® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.8V 輸入電壓:2.7 V ~ 5.5 V PWM 型:混合物 頻率 - 開關:4MHz 電流 - 輸出:2A 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:8-VFDFN 裸露焊盤，8-MLF? 包裝:帶卷 (TR) 供應商設備封裝:8-MLF?（2x2） 產(chǎn)品目錄頁面:1094 (CN2011-ZH PDF) 其它名稱:576-3303-2 |
| LTC3423EMS#TR | 功能描述:IC REG BOOST SYNC ADJ 1A 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調式 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 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 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) 供應商設備封裝:8-SOIC |
| LTC3423EMS#TRPBF | 功能描述:IC REG BOOST SYNC ADJ 1A 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調式 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 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 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) 供應商設備封裝:8-SOIC |
| LTC3424 | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:Low Output Voltage 3MHz Micropower Synchronous Boost Converters |
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