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參數(shù)資料
| 型號： | LT3431 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 320K |
| 代理商： | LT3431 |
1
LT1936
1936fa
APPLICATIU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
1.4A, 500kHz Step-Down
Switching Regulator
■
Wide Input Range: 3.6V to 36V
■
Short-Circuit Protected Over Full Input Range
■
1.9A Guaranteed Minimum Switch Current
■
5V at 1.4A from 10V to 36V Input
■
3.3V at 1.4A from 7V to 36V Input
■
5V at 1.2A from 6.3V to 36V Input
■
3.3V at 1.2A from 4.5V to 36V Input
■
Output Adjustable Down to 1.20V
■
500kHz Fixed Frequency Operation
■
Soft-Start
■
Uses Small Ceramic Capacitors
■
Internal or External Compensation
■
Low Shutdown Current: <2
μ
A
■
Thermally Enhanced 8-Lead MSOP Package
■
Automotive Battery Regulation
■
Industrial Control Supplies
■
Unregulated Wall Adapters
3.3V Step-Down Converter
Efficiency
The LT
1936 is a current mode PWM step-down DC/DC
converter with an internal 1.9A power switch, packaged in
a tiny, thermally enhanced 8-lead MSOP. The wide input
range of 3.6V to 36V makes the LT1936 suitable for
regulating power from a wide variety of sources, including
automotive batteries, 24V industrial supplies and unregu-
lated wall adapters. Its high operating frequency allows
the use of small, low cost inductors and ceramic capaci-
tors, resulting in low, predictable output ripple.
Cycle-by-cycle current limit, frequency foldback and ther-
mal shutdown provide protection against shorted outputs,
and soft-start eliminates input current surge during start-
up. Transient response can be optimized by using external
compensation components, or board space can be mini-
mized by using internal compensation. The low current
(<2
μ
A) shutdown mode enables easy power management
in battery-powered systems.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
V
IN
4.5V TO 36V
ON OFF
0.22
μ
F
10
μ
H
17.4k
22
μ
F
1936 TA01a
4.7
μ
F
V
3.3V
1.2A
V
IN
BOOST
V
C
GND
COMP
FB
LT1936
SHDN
SW
10k
LOAD CURRENT (A)
0
65
E
70
75
80
85
95
0.5
1
1936 TA01b
1.5
90
V
OUT
= 5V
V
IN
= 12V
V
OUT
= 3.3V
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| LT3431EFE#TR | 功能描述:IC REG BUCK ADJ 3A 16TSSOP 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:- 設(shè)計資源:Design Support Tool 標準包裝: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 |
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