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參數資料
| 型號： | LT1533IS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 1.8 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-16 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 379K |
| 代理商： | LT1533IS |
1
LT1533
Ultralow Noise
1A Switching Regulator
FEATURES
DESCRIPTIO
N
U
The LT
1533 is a new class of switching regulator designed
to reduce conducted and radiated electromagnetic interfer-
ence (EMI). Ultralow noise and EMI are achieved by providing
user control of the output switch slew rates. Voltage and
current slew rates can be independently programmed to
optimize switcher harmonic content versus efficiency. The
LT1533 can reduce high frequency harmonic power by as
much as 40dB with only minor losses in efficiency.
The LT1533 utilizes a dual output switch current mode
architecture optimized for low noise topologies. The IC
includes two 1A power switches along with all necessary
oscillator, control and protection circuitry. Unique error amp
circuitry can regulate both positive and negative voltages.
The internal oscillator may be synchronized to an external
clock for more accurate placement of switching harmonics.
Protection features include cycle by cycle current limit pro-
tection, undervoltage lockout and thermal shutdown.
Low minimum supply voltage and low supply current during
shutdown make the LT1533 well suited for portable applica-
tions. The part may also be forced into a 50% duty cycle mode
for unregulated applications. The LT1533 is available in the
16-pin narrow SO package.
I
Greatly Reduced Conducted and Radiated EMI
(<100
μ
V
P-P
in Typical Application)
I
Low Switching Harmonic Content
I
Independent Control of Switch Voltage and
Current Slew Rates
I
Two 1A Current Limited Power Switches
I
Regulates Positive and Negative Voltages
I
20kHz to 250kHz Oscillator Frequency
I
Easily Synchronized to External Clock
I
Wide Input Voltage Range: 2.7V to 23V
I
Low Shutdown Current: 12
μ
A Typical
I
Easier Layout than with Conventional Switchers
I
Outputs Can Be Forced to 50% Duty Cycle for
Unregulated Applications
APPLICATIO
S
U
I
Precision Instrumentation Systems
I
Isolated Supplies for Industrial Automation
I
Medical Instruments
I
Wireless Communications
I
Single Board Data Acquisition Systems
TYPICAL APPLICATIO
N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
SHDN
DUTY
SYNC
C
T
COL A
COL B
PGND
R
VSL
R
CSL
FB
NFB
LT1533
GND
V
IN
5V
14
2
15
16
13
12
7
11
3
4
5
6
10
820pF
16.9k
0.015
μ
F
1000pF
15k
Note 1
33
μ
F
15k
15k
+
T1
1N4148
B
A
L1
300
μ
H
L2
33
μ
H
1N4148
2.49k
1%
8
9
21.5k, 1%
C1
47
μ
F
16V
+
C2
33
μ
F
20V
NOTE 1:25nH TRACE INDUCTANCE
OR COILCRAFT B07T
C1:SANYO OS-CON
C2:AVX TPS TANTALUM
L1:COILTRONICS CTX300-2
L2:COILCRAFT DT1608C-333
T1:COILTRONICS CTX02-13834
12V
150mA
1533 TA01
+
R
T
V
C
Low Noise 5V to 12V Forward Push-Pull DC/DC Converter
B
2mV/DIV
A
100
μ
V/DIV
2
μ
s/DIV
1533 TA02
12V Output Noise (BW = 100MHz)
<100
μ
V
P-P
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1533IS#PBF | 功能描述:IC REG PUSH-PLL CTRLR ISO 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 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:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1533IS#TR | 功能描述:IC REG PUSH-PLL CTRLR ISO 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源: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:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 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) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1533IS#TRPBF | 功能描述:IC REG PUSH-PLL CTRLR ISO 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源: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:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 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) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1534 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Ultralow Noise 2A Switching Regulators |
| LT1534-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Ultralow Noise 2A Switching Regulators |
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