LTC3026 반도체 회로 부품 판매점
1.5A Low Input Voltage VLDO Linear Regulator
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 Linear Technology |
Features
n Input Voltage Range:
1.14V to 3.5V (with Boost Enabled)
1.14V to 5.5V (with External 5V Boost)
n Low Dropout Voltage: 100mV at IOUT = 1.5A
n Adjustable Output Range: 0.4V to 2.6V
n Output Current: Up to 1.5A
n Excellent Supply Rejection Even Near Dropout
n Shutdown Disconnects Load from VIN and VBST
n Low Operating Current: IIN = 950µA at VIN = 1.5V
n Low Shutdown Current:
IIN < 1µA (Typ), IBST = 0.1µA (Typ)
n Stable with 10µF or Greater Ceramic Capacitors
n Short-Circuit, Reverse Current Protected
n Overtemperature Protected
n Available in 10-Lead MSOP and 10-Lead
(3mm × 3mm) DFN Packages
Applications
n High Efficiency Linear Regulator
n Post Regulator for Switching Supplies
n Microprocessor Supply
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
and ThinSOT, VLDO are trademarks of Linear Technology Corporation. All other trademarks are
the property of their respective owners.
LTC3026www.DataSheet4U.com
1.5A Low Input Voltage
VLDO Linear Regulator
Description
The LTC®3026 is a very low dropout (VLDO™) linear regula-
tor that can operate at input voltages down to 1.14V. The
device is capable of supplying 1.5A of output current with
a typical dropout voltage of only 100mV. To allow opera-
tion at low input voltages the LTC3026 includes a boost
converter that provides the necessary headroom for the
internal LDO circuitry.
Output current comes directly from the input supply to
maximize efficiency. The boost converter requires only a
small chip inductor and ceramic capacitor for operation.
Additionally, the boosted output voltage of one LTC3026
can supply the boost voltage for other LTC3026s, thus
requiring a single inductor for multiple LDOs. A user
supplied boost voltage can be used eliminating the need
for an inductor altogether.
The LTC3026 regulator is stable with 10µF or greater
ceramic output capacitors. The device has a low 0.4V
reference voltage which is used to program the output
voltage via two external resistors. The device also has
internal current limit, overtemperature shutdown, and
reverse output current protection. The LTC3026 is avail-
able in a small 10-lead MSOP or low profile (0.75mm)
10-lead 3mm × 3mm DFN package.
Typical Application
1.2V Output Voltage from 1.5V Input Supply
VIN = 1.5V
L1
10µH
SW
5V BOOST BST
CONVERTER
IN
4.7µF
0.4V +
–
OUT
OFF ON
SHDN
GND
LTC3026
ADJ
PG
L1: MURATA LQH2MCN100K02
4.7µF
8.06k
100k 4.02k
VOUT = 1.2V,
1.5A
COUT
10µF
3026 TA01a
Dropout Voltage vs Output Current
150
100
1.2V
1.5V
2.0V
2.6V
50
0
0 0.5 1.0 1.5
IOUT (A)
3026 TA01b
3026fd
LTC3026
www.DataSheet4U.com
Absolute Maximum Ratings (Note 1)
VBST to GND................................................. –0.3V to 6V
VIN to GND.................................................... –0.3V to 6V
PG to GND.................................................... –0.3V to 6V
SHDN to GND............................................ –0.3V to 6.3V
ADJ to GND................................... –0.3V to (VIN + 0.3V)
Output Short-Circuit Duration........................... Indefinite
Operating Junction Temperature Range
(Note 8)..............................................–40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
Lead Temperature (MSE, Soldering, 10 sec)......... 300°C
Pin Configuration
TOP VIEW
IN 1
IN 2
GND 3
SW 4
BST 5
10 OUT
9 OUT
11
GND
8 ADJ
7 PG
6 SHDN
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 40°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
IN 1
IN 2
GND 3
SW 4
BST 5
TOP VIEW
11
GND
10 OUT
9 OUT
8 ADJ
7 PG
6 SHDN
MSE PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 40°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3026EDD#PBF
LTC3026EDD#TRPBF
LBHW
10-Lead (3mm × 3mm) Plastic DFN
LTC3026EMSE#PBF
LTC3026EMSE#TRPBF LTBJB
10-Lead Plastic MSOP
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3026EDD
LTC3026EDD#TR
LBHW
10-Lead (3mm × 3mm) Plastic DFN
LTC3026EMSE
LTC3026EMSE#TR
LTBJB
10-Lead Plastic MSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
3026fd
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제조업체: Linear Technology
( linear )
LTC3026 regulator
데이터시트 다운로드 :
[ LTC3026.PDF ]
[ LTC3026 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
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