POWER LOSS (mW)
LT3582/LT3582-5/LT3582-12
Boost and Single Inductor
Inverting DC/DC Converters with
2
Optional I C Programing and OTP
FEATURES DESCRIPTION
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Output Voltages: The LT 3582/LT3582-5/LT3582-12 are dual DC/DC converters
3.2V to 12.775V and 1.2V to 13.95V (LT3582) featuring positive and negative outputs and integrated feedback
5V and 5V (LT3582-5) resistors. The LT3582, with its built-in One Time Programming
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12V and 12V (LT3582-12) (OTP), has con gurable output settings via the I C interface,
2
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Digitally Re-Programmable (LT3582) via I C for: including output voltage settings, power-up sequencing,
Output Voltages power-down discharge, and output voltage ramp rates. LT3582
Power Sequencing settings can be changed adaptively in the nal product, or set
Output Voltage Ramp Rates during manufacturing and made permanent using the built in
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Power-Up Defaults Settable with Non-Volatile OTP non-volatile OTP memory. The positive output voltage can be
(LT3582) set between 3.2V and 12.775V in 25mV steps. The negative
2
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I C Compatible Interface (Standard Mode*) output voltage can be set between 1.2V and 13.95V in
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All Power Switches Integrated 50mV steps. The LT3582-5 and LT3582-12 are pre-con gured
350mA Current Limit (Boost) at the factory for 5V and 12V outputs respectively, and as
2
600mA Current Limit (Inverting) such, dont require the use of the I C interface.
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All Feedback Resistors Integrated
The LT3582 series includes two monolithic converters,
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Input Voltage Range: 2.55V to 5.5V
one Boost and one Inverting. The Boost converter has an
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Low Quiescent Current
integrated power switch and output disconnect switch.
325A in Active Mode
The Inverting converter uses a single inductor topology
0.01A in Shutdown Mode
and includes an integrated power switch. Both Boost
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Integrated Output Disconnect
and Inverting converters use a novel** control scheme
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Tiny 16-Pin 3mm 3mm QFN Package
resulting in low output voltage ripple while allowing for high
conversion ef ciency over a wide load current range. The
APPLICATIONS
LT3582 series is available in a 16-pin 3mm 3mm QFN.
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AMOLED Power
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
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Technology Corporation. All other trademarks are the property of their respective owners.
CCD Power
* Input thresholds are reduced to allow communication with low voltage digital ICs.
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General Purpose DC/DC Conversion
(See Electrical Characteristics).
** Patent Pending
TYPICAL APPLICATION
12V Supplies from a Single 5V Input
Ef ciency and Power Loss
350
95
SWN SHDN V
OUTP
V
OUTN
INPUT
300
SWN V
IN
4.5V TO 5.5V 85
6.8H
6.8H
SWP
250
75
GND
4.7F
200
LT3582
1F
65
10F
150
V CAPP
NEG
12V
V
OUTN
55
CAPP
V
85mA POS 100
2
I C SDA V 12V
OUTP
INTERFACE 80mA
45
50
SCL V
PP
OPTIONAL ON
4.7F
LT3582-5/LT3582-12
CA
RAMPP RAMPN 0
35
3582512 TA01a
0.1 1 10 100
10nF 10nF LOAD CURRENT (mA)
3582512 TA01b
3582512fb
1
EFFICIENCY (%)LT3582/LT3582-5/LT3582-12
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
(Note 1)
TOP VIEW
V Voltage ..................................................................6V
IN
SWP Voltage .............................................................15V
16 15 14 13
SWN Voltage ........................................................16.5V
CA 1 12 SWP
CAPP Voltage ............................................................15V
V 2 11 CAPP
OUTN 17
CAPP-V Voltage .................................... 0.8V to 8V GND
OUTP
SWN 3 10 CAPP
I ....................................................... 300mA
SWN 4 9 V
CAPP-VOUTP
OUTP
5 6 7 8
V Voltage ...........................................................15V
OUTP
V Voltage ......................................................16.5V
OUTN
RAMPP Voltage ..........................................................3V
UD PACKAGE
RAMPN Voltage ..........................................................3V
16-PIN (3mm 3mm) PLASTIC QFN
SHDN Voltage ................................................ 0.5 to 6V T = 125C, = 68C/W
JMAX JA
EXPOSED PAD (PIN #17) IS GND, MUST BE SOLDERED TO PCB
V Voltage ...................................................0.2 to 16V
PP
SDA, CA, SCL Voltage .................................... 0.5 to 6V
Operating Junction Temperature Range (Notes 3, 5)
LT3582E ............................................ 40C to 125C
Storage Temperature Range .............. 65C to 150C
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3582EUD#PBF LT3582EUD#TRPBF LDDB 40C to 125C
16-Pin (3mm 3mm) Plastic QFN
LT3582EUD-5#PBF LT3582EUD-5#TRPBF LDVG 40C to 125C
16-Pin (3mm 3mm) Plastic QFN
LT3582EUD-12#PBF LT3582EUD-12#TRPBF LDVH 16-Pin (3mm 3mm) Plastic QFN 40C to 125C
Consult LTC Marketing for parts speci ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: