LT3582-5 반도체 회로 부품 판매점
I2C Programmable Boost And Single Inductor Inverting DC/DC Converters
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 Linear Technology Corporation |
www.DataSheet4U.com
FEATURES
LT3582/LT3582-5/LT3582-12
I2C Programmable Boost
and Single Inductor Inverting
DC/DC Converters with OTP
DESCRIPTION
n Output Voltages:
3.2V to 12.775V and –1.2V to –13.95V (LT3582)
5V and –5V (LT3582-5)
12V and –12V (LT3582-12)
n Digitally Re-Programmable (LT3582) Via I2C for:
Output Voltages
Power Sequencing
Output Voltage Ramp Rates
n Power-up Defaults Settable with Non-volatile OTP
(LT3582)
n I2C Compatible Interface (Standard Mode*)
n All Power Switches Integrated
350mA Current Limit (Boost)
600mA Current Limit (Inverting)
n All Feedback Resistors Integrated
n Input Voltage Range: 2.55V to 5.5V
n Low Quiescent Current
325μA in Active Mode
0.01μA in Shutdown Mode
n Integrated Output Disconnect
n Tiny 16-pin 3mm × 3mm QFN Package
APPLICATIONS
n AMOLED Power
n CCD Power
n General Purpose DC/DC Conversion
The LT®3582/LT3582-5/LT3582-12 are dual DC/DC convert-
ers featuring positive and negative outputs and integrated
feedback resistors. The LT3582, with its built in One Time
Programming (OTP), has configurable output settings via
the I2C interface, including output voltage settings, power
up sequencing, power down discharge, and output voltage
ramp rates. LT3582 settings can be changed adaptively in
the final product, or set during manufacturing and made
permanent using the built in non-volatile OTP memory.
The positive output voltage can be set between 3.2V and
12.775V in 25mV steps. The negative output voltage can
be set between –1.2V and –13.95V in –50mV steps. The
LT3582-5 and LT3582-12 are pre-configured at the factory
for ±5V and ±12V outputs respectively.
The LT3582 series includes two monolithic converters,
one Boost and one Inverting. The Boost converter has an
integrated power switch and output disconnect switch.
The Inverting converter uses a single inductor topology
and includes an integrated power switch. Both Boost and
Inverting converters use a novel** control scheme result-
ing in low output voltage ripple while allowing for high
conversion efficiency over a wide load current range. The
LT3582 series is available in a 16-pin 3mm x 3mm QFN.
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.
* Input thresholds are reduced to allow communication with low voltage digital ICs.
(See Electrical Characteristics).
**Patent Pending
TYPICAL APPLICATION
±12V Supplies from a Single 5V Input
SWN
SHDN
SWN
6.8μH
VIN
SWP
GND
LT3582
VNEG
–12V
85mA
I2C
INTERFACE
10μF
VOUTN
SDA
SCL
CAPP
CAPP
VOUTP
VPP
( )OPTIONAL ON
LT3582-5/LT3582-12
CA RAMPP RAMPN
10nF 10nF
6.8μH
1μF
INPUT
4.5V TO 5.5V
4.7μF
4.7μF
VPOS
12V
80mA
3582512 TA01a
Efficiency and Power Loss
95
VOUTP
VOUTN
85
75
65
55
350
300
250
200
150
100
45 50
35
0.1
1 10
LOAD CURRENT (mA)
0
100
3582512 TA01b
3582512f
1
wwwL.DTata3Sh5ee8t4U2.co/mLT3582-5/LT3582-12
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN Voltage..................................................................6V
SWP Voltage .............................................................15V
SWN Voltage........................................................–16.5V
CAPP Voltage............................................................15V
CAPP-VOUTP Voltage .................................... –0.8V to 8V
ICAPP-VOUTP ........................................................±300mA
VOUTP Voltage ...........................................................15V
VOUTN Voltage ......................................................–16.5V
RAMPP Voltage...........................................................3V
RAMPN Voltage ..........................................................3V
SHDN Voltage .................................................–0.5 to 6V
VPP Voltage ...................................................–0.2 to 16V
SDA, CA, SCL Voltage .....................................–0.5 to 6V
Operating Junction Temperature Range (Notes 3, 5)
LT3582E............................................. –40°C to 125°C
Storage Temperature Range .............. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
CA 1
12 SWP
VOUTN 2 17 11 CAPP
SWN 3 GND 10 CAPP
SWN 4
9 VOUTP
5678
UD PACKAGE
16-PIN (3mm × 3mm) PLASTIC QFN
TJMAX = 125°C, θJA = 68°C/W
EXPOSED PAD (PIN #17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT3582EUD#PBF
LT3582EUD#TRPBF
LDDB
16-Pin (3mm × 3mm) Plastic QFN
LT3582EUD-5#PBF
LT3582EUD-5#TRPBF LDVG
16-Pin (3mm × 3mm) Plastic QFN
LT3582EUD-12#PBF
LT3582EUD-12#TRPBF LDVH
16-Pin (3mm × 3mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard 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
–40°C to 125°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, VSHDN = VIN unless otherwise noted. (Note 3)
Switching Regulator Characteristics
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN_MIN
VIN_MAX
IVIN
Minimum Operating Voltage
Maximum Operating Voltage
VIN Quiescent Current
Ramp Current Configured to 1μA,
SWOFF Bit Active
l 2.4
l 5.5
2.475 2.55
325 450
V
V
μA
IVIN_SHDN
ICAPP_SHDN
TOFF_MINP
TOFF_MINN
TON_MAX
ILIMIT_P
VIN Quiescent Current in Shutdown VSHDN = 0
CAPP Quiescent Current in Shutdown VSHDN = 0, VCAPP = 5.0V, VOUTP = 0V
Minimum Switch Off Time
Boost Switch
Minimum Switch Off Time
Inverting Switch
Maximum Switch On Time
Inverting and Boost Switches
Boost Switch Current Limit
0.01 0.5
0 0.5
100
125
10
l 285 350 430
μA
μA
ns
ns
μs
mA
3582512f
2
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제조업체: Linear Technology Corporation
( linear )
LT3582-5 converter
데이터시트 다운로드 :
[ LT3582-5.PDF ]
[ LT3582-5 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
관련 데이터시트
LT3582-12
I2C Programmable Boost And Single Inductor Inverting DC/DC Converters - Linear Technology Corporation
LT3582-5
I2C Programmable Boost And Single Inductor Inverting DC/DC Converters - Linear Technology Corporation