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参数资料
| 型号： | LT1534 |
| 厂商： | Linear Technology Corporation |
| 英文描述： | Octal Bus Transceivers 20-PDIP 0 to 70 |
| 中文描述： | 超低噪声甲开关稳压器 |
| 文件页数： | 1/16页 |
| 文件大小： | 222K |
| 代理商： | LT1534 |
1
LT1534/LT1534-1
Ultralow Noise
TYPICAL APPLICATIO
N
U
DESCRIPTIOU
FEATURES
APPLICATIU
2A Switching Regulators
The LT
1534/LT1534-1 are a new class of switching regula-
tor designed to reduce conducted and radiated electromag-
netic interference (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 pro-
grammed to optimize switcher harmonic content versus
efficiency. The LT1534/LT1534-1 can reduce high frequency
harmonic power by as much as 40dB with only minor losses
in efficiency.
The LT1534/LT1534-1 utilize a current mode architecture
optimized for low noise boost topologies. The ICs include a
2A power switch 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 fea-
tures include cycle-by-cycle current limit protection, under-
voltage lockout and thermal shutdown.
Low minimum supply voltage and low supply current during
shutdown make the LT1534/LT1534-1 well suited for por-
table applications. The LT1534/LT1534-1 are available in the
16-pin narrow SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Greatly Reduced Conducted and Radiated EMI
I
Low Switching Harmonic Content
I
Independent Control of Switch Voltage and
Current Slew Rates
I
2A Current Limited Power Switch
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
Precision Instrumentation Systems
I
Isolated Supplies for Industrial Automation
I
Medical Instruments
I
Wireless Communications
I
Single Board Data Acquisition Systems
B
2mV/DIV
A
50mV/DIV
10
μ
s/DIV
1534 TA02
5V Output Noise (BW = 100MHz)
SHDN
SYNC
COL
NFB
LT1534-1
GND
V
IN
3.3V
15
2
PGND
3
L2
R
VSL
14
R
CSL
13
7
12
4
5
6
11
3300pF
16.9k
220pF
1nF
24k
C
IN
33
μ
F
6.3V
10
24k
+
1N5817
A
OPTIONAL
L1
50
μ
H
2.49k
6.8k
10
1,8,
9,16
7.5k
C1
47
μ
F
6.3V
×
2
+
C
: MATSUSHITA ECGCOJB330
C1, C2: MATSUSHITA ECGCOJB47O
L1, L3: COILTRONICS CTX50-4
L2: COILCRAFT B08T (28nH) OR PC TRACE
1534 TA01
C
T
R
T
V
C
FB
L3
50
μ
H
C2
47
μ
F
5V
650mA
+
15nF
B
Figure 1. Low Noise 3.3V to 5V Boost Converter
相关PDF资料 |
PDF描述 |
|---|---|
| LT1534C | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1534CS | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1534I | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1534IS | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1537C | Advanced Low Power 5V RS232 Transceiver with Small Capacitors |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1534-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Ultralow Noise 2A Switching Regulators |
| LT-1534-501-024 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1534-510-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1534-510-024 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1534-510-125 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
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