LT3048-15 반도체 회로 부품 판매점
Low Noise Bias Generator
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 Linear |
FEATURES
n Generates Low Noise Bias Voltage from Single Cell
Li-Ion Battery
n Output Current: Up to 40mA
n Low Output Ripple and Noise: <500µVP-P
n Boost Regulator
n 2.2MHz Operation
n 300mA Power Switch
n Integrated Schottky Diode
n Low Dropout Linear Regulator
n Low Noise: <120µVRMS (10Hz to 100kHz)
n 0.1% Load Regulation
n Short-Circuit and Thermal Protection
n Load Disconnect in Shutdown
n Available in 2mm × 2mm DFN Package
APPLICATIONS
n Sensor Bias
n Op Amp Supply
LT3048-15
Low Noise Bias Generator
in 2mm × 2mm DFN
DESCRIPTION
The LT®3048-15 generates a low noise, low ripple bias
supply from an input voltage of 2.7V to 4.8V.
The LT3048-15 includes a boost regulator and a LDO
linear regulator. The boost regulator provides power to
the linear regulator.
The boost regulator output voltage is regulated to 1.1V
above the LDO output, optimizing LDO ripple rejection and
transient response. Fixed frequency operation and current
mode control allow the use of very small inductors and
results in low, predictable output ripple.
The linear regulator in the LT3048-15 generates a fixed
15V output. High power supply ripple rejection combined
with a low noise internal reference results in less than
500µVP-P output ripple and noise.
The LT3048-15 is available in a 8-lead 2mm × 2mm DFN
package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
IN
2.7V TO 4.8V
10µH
SW BSTOUT
VIN LDOIN
1µF LT3048-15
LDOOUT
OFF ON
EN BYP
GND
4.7µF
OUT
1nF
1µF
15V
VIN (V) IOUT (mA)
2.7 19
3.3 22
3.6 24
3048 TA01a
Efficiency
80
70
60
50
40
30 LDOOUT = 15V
L = 10µH
20 DCR = 650mΩ
10
VIN = 2.7V
VIN = 3.3V
VIN = 3.6V
0
0 5 10 15 20 25
LOAD CURRENT (mA)
3048 TA01b
For more information www.linear.com/LT3048-15
304815f
1
LT3048-15
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN...............................................................................6V
SW.............................................................................25V
BSTOUT.....................................................................23V
LDOIN........................................................................22V
LDOOUT.....................................................................22V
BYP.........................................................................±0.3V
EN................................................................................6V
Operating Junction Temperature Range (Note 2)
LT3048E-15......................................... –40°C to 125°C
LT3048I-15......................................... –40°C to 125°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
SW 1
8 BSTOUT
VIN 2 9 7 EN
GND 3 GND 6 LDOIN
BYP 4
5 LDOOUT
DC PACKAGE
8-LEAD (2mm × 2mm) PLASTIC DFN
θJA = 102°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT3048EDC-15#PBF
LT3048EDC-15#TRPBF LGKK
8-Lead (2mm × 2mm) Plastic DFN
LT3048IDC-15#PBF
LT3048IDC-15#TRPBF LGKK
8-Lead (2mm × 2mm) Plastic DFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
304815f
2 For more information www.linear.com/LT3048-15
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제조업체: Linear
( linear )
LT3048-15 data
데이터시트 다운로드 :
[ LT3048-15.PDF ]
[ LT3048-15 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
