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參數資料
| 型號： | LTBDM |
| 廠商： | Linear Integrated Systems |
| 英文描述： | Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| 中文描述： | 微功耗降壓穩(wěn)壓器與集成升壓二極管和捕捉 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 205K |
| 代理商： | LTBDM |
1
LT3470
3470f
■
Automotive Battery Regulation
■
Power for Portable Products
■
Distributed Supply Regulation
■
Industrial Supplies
■
Wall Transformer Regulation
Micropower Buck Regulator
with Integrated Boost and
Catch Diodes
■
Low Quiescent Current: 26
μ
A at 12V
IN
to 3.3V
OUT
■
Integrated Boost and Catch Diodes
■
Input Range: 4V to 40V
■
Low Output Ripple: <10mV
■
<1
μ
A in Shutdown Mode
■
Output Voltage: 1.25V to 16V
■
200mA Output Current
■
Hysteretic Mode Control
– Low Ripple Burst Mode
Operation at Light Loads
– Continuous Operation at Higher Loads
■
Solution Size as Small as 50mm
2
■
Low Profile (1mm) ThinSOT Package
APPLICATIU
Efficiency and Power Loss vs Load Current
Burst Mode is a registered trademark of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
FEATURES
DESCRIPTIOU
The LT
3470 is a micropower step-down DC/DC converter
that integrates a 300mA power switch, catch diode and
boost diode into a low profile (1mm) ThinSOT
TM
package.
The LT3470 combines Burst Mode and continuous opera-
tion to allow the use of tiny inductor and capacitors while
providing a low ripple output to loads of up to 200mA.
With its wide input range of 4V to 40V, the LT3470 can
regulate a wide variety of power sources, from 2-cell
Li-Ion batteries to unregulated wall transformers and lead-
acid batteries. Quiescent current in regulation is just 26
μ
A
in a typical application while a zero current shutdown
mode disconnects the load from the input source, simpli-
fying power management in battery-powered systems.
Fast current limiting and hysteretic control protects the
LT3470 and external components against shorted out-
puts, even at 40V input.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
U
LOAD CURRENT (mA)
30
E
P
40
60
80
90
0.1
10
100
3470 TA02
20
1
70
50
10
1
1000
100
10
0.1
V
IN
= 12V
V
IN
BOOST
LT3470
SW
BIAS
SHDN
0.22
μ
F
22pF
22
μ
F
2.2
μ
F
V
IN
7V TO 40V
V
OUT
5V
200mA
604k
1%
200k
1%
33
μ
H
FB
GND
OFF ON
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTBGB | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT |
| LTBGP | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown |
| LTBGQ | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown |
| LTBGR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown |
| LTBGS | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown |
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