參數(shù)資料
型號(hào)： LT3470EDDB#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.2 A SWITCHING REGULATOR, PDSO8
封裝： 3 X 2 MM, 0.75MM INCH HEIGHT, LEAD FREE, MO-229WECD-1, PLASTIC, DFN-8
文件頁數(shù)： 1/20頁
文件大?。?/td> 256K
代理商： LT3470EDDB#PBF
1
LT3470
3470fc
■ 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
A at 12VIN to 3.3VOUT
■ Integrated Boost and Catch Diodes
■ Input Range: 4V to 40V
■ Low Output Ripple: <10mV
■ <1
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 50mm2
■ Low Profile (0.75mm) 3mm x 2mm Thermally
Enhanced 8-Lead DD and 1mm ThinSOT Packages
Efficiency and Power Loss vs Load Current
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
The LT
3470 is a micropower step-down DC/DC converter
that integrates a 300mA power switch, catch diode
and boost diode into low profile 3mm x 2mm DD and
ThinSOT
TM packages. The LT3470 combines Burst Mode
and continuous operation 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
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.
LOAD CURRENT (mA)
30
EFFICIENCY
(%)
POWER
LOSS
(mW)
40
60
80
90
0.1
10
100
3470 TA02
20
1
70
50
10
1
1000
100
10
0.1
VIN = 12V
VIN
BOOST
LT3470
SW
SHDN
0.22
F
22pF
22
F
2.2
F
VIN
7V TO 40V
VOUT
5V
200mA
604k
1%
200k
1%
33
H
BIAS
FB
GND
OFF ON
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation. ThinSOT is a
trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT3470EDDBTRMPBF 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 4-40V DFN8EP
LT3470ETS8 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 40V 8-Pin TSOT-23
LT3470ETS8#PBF 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK ADJ 20 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 200mA, TSOT-23-8; Primary Input Voltage:40V; No. of Outputs:1; Output Current:200mA; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:8-TSOT-23 ;RoHS Compliant: Yes
LT3470ETS8#TR 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 40V 8-Pin TSOT-23 T/R
LT3470ETS8#TRM 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 40V 8-Pin TSOT-23 T/R
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