LTC3124_15 Datasheet, PDF (28/28 Pages) Linear Technology – 15V, 5A 2-Phase Synchronous Step-Up DC/DC Converter with Output Disconnect

LTC3124
TYPICAL APPLICATION
Dual Supercapacitor Backup Power Supply, 0.5V to 5.4V
V_IN
0.5V TO 5.4V
SC1 ⁺
100F
SC2
+
100F
LB
3.3µH
LA
3.3µH
C_IN
10µF
C_VCC
4.7µF
SWB
CAP
PGNDB V_OUTB
SWA
V_OUTA
LTC3124
PGNDA
V_IN
SGND
PWM/SYNC SD
V_CC
FB
RT
V_C
R_T
28k
C1
100nF
C_OUT
100µF
×2
V_OUT
5V
V_IN
R3
1M
OFF ON
R1
1.47M
R_C
59k
C_C
1.5nF
R2
464k
C_F
47pF
C1: 100nF, 16V, X5R, 0805
C_IN: 10µF, 10V, X5R, 1206
C_OUT: 100µF × 2, 6.3V, X5R, 1812
C_VCC: 4.7µF, 10V, X5R, 1206
LA, LB: COILCRAFT XAL5030-332ME
SC1, SC2: TECATE POWERBURST TPL-100/22X45
3124 TA07a
V_IN
2V/DIV
SD
2V/DIV
PWM Rundown Curve
SUPPLY REMOVED
FROM SUPERCAP
V_OUT
5V/DIV
OUTPUT
CURRENT
100mA/DIV
200s/DIV
3124 TA07b
V_IN
2V/DIV
Burst Mode Rundown Curve
SD
2V/DIV
V_OUT
5V/DIV
OUTPUT
CURRENT
20mA/DIV
SUPPLY REMOVED
FROM SUPERCAP
500s/DIV
3124 TA07c
RELATED PARTS
PART NUMBER
LTC3459
LTC3528
LTC3539
LTC3421
LTC3428
LTC3425
LTC3122
LTC3112
LTC3114-1
LTC3115-1
DESCRIPTION
COMMENTS
70mA I_SW, 10V Micropower Synchronous Boost Converter
with Output Disconnect, Burst Mode Operation
V_IN: 1.5V to 5.5V, V_OUT(MAX) = 10V, I_Q = 10μA, I_SD < 1μA,
ThinSOT Package
1A I_SW, 1MHz, Synchronous Step-Up DC/DC Converter with
Output Disconnect, Burst Mode Operation
2A I_SW, 1MHz/2MHz, Synchronous Step-Up DC/DC Converters
with Output Disconnect, Burst Mode Operation
3A I_SW, 3MHz, Synchronous Step-Up DC/DC Converter with
Output Disconnect
4A I_SW, 2MHz (1MHz Switching), Dual Phase Step-Up
DC/DC Converter
94% Efficiency V_IN: 700mV to 5.25V, V_OUT(MAX) = 5.25V, I_Q = 12µA,
I_SD < 1µA, 2mm × 3mm DFN Package
94% Efficiency V_IN: 700mV to 5.25V, V_OUT(MAX) = 5.25V, I_Q = 10uA,
I_SD < 1µA, 2mm × 3mm DFN Package
95% Efficiency V_IN: 0.5V to 4.5V, V_OUT(MAX) = 5.25V, I_Q = 12μA,
I_SD < 1μA, QFN24 Package
92% Efficiency V_IN: 1.6V to 4.5V, V_OUT(MAX) = 5.25V, I_SD < 1µA,
3mm × 3mm DFN Package
5A I_SW, 8MHz, Low Ripple, 4-Phase Synchronous Step-Up
DC/DC Converter with Output Disconnect
2.5A I_SW, 3MHz, Synchronous Step-Up DC/DC Converter with
Output Disconnect, Burst Mode Operation
95% Efficiency V_IN: 0.5V to 4.5V, V_OUT(MAX) = 5.25V, I_Q = 12μA,
I_SD < 1μA, QFN32
95% Efficiency V_IN: 1.8V to 5.5V [500mV After Start-Up],
V_OUT(MAX) = 15V, I_Q = 25μA, I_SD < 1μA, 3mm × 4mm DFN
and MSOP Packages
15V, 2.5A, 750kHz, Synchronous Buck-Boost DC/DC Converter 95% Efficiency V_IN: 2.7V to 15V, V_OUT(MAX) = 14V, I_Q = 50μA,
with Output Disconnect, Burst Mode Operation
I_SD < 1μA, 4mm × 5mm DFN and TSSOP Packages
40V, 1A, 2MHz, Synchronous Buck-Boost DC/DC Converter
with Output Disconnect, Output Current Limit, Burst Mode
Operation
95% Efficiency V_IN: 2.2V to 40V, V_OUT(MAX) = 40V, I_Q = 30μA,
I_SD = 3μA, 3mm × 5mm DFN and TSSOP Packages
40V, 2A, 2MHz, Synchronous Buck-Boost DC/DC Converter
with Output Disconnect, Burst Mode Operation
95% Efficiency V_IN: 2.7V to 40V, V_OUT(MAX) = 40V, I_Q = 30μA,
I_SD = 3μA, 4mm × 5mm DFN and TSSOP Packages
28 ^{Linear Technology Corporation}
1630 McCarthy Blvd., Milpitas,
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www.linear.com/LTC3124
3124f
LT 0614 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2014