LT8570_15 Datasheet, PDF (34/34 Pages) Linear Technology – Boost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization

LT8570/LT8570-1
Typical Application
1.2MHz Boost Converter Creates 48V from 9V-16V Input
V_IN
9V TO 16V
L1
220µH
576k
D1
V_OUT
48V
35mA (V_IN = 9V)
50mA (V_IN = 12V)
V_IN
SW
SHDN
FBX
C_IN
0.22µF
LT8570-1
SYNC
VC
RT GND SS
69.8k
0.1µF
562k
C_OUT
0.22µF
8.87k
3.3nF
47pF
8570 TA09a
L1: COILCRAFT 220µH LPS6235-224
D1: DIODES INC. ZHCS506
C_IN: 0.22µF, 25V, 0603, X7R
C_OUT: 0.22µF, 50V, 0805, X7R
Efficiency and Power Loss
(V_IN = 12V)
90
540
80
450
70
360
60
270
50
180
40
30
0
EFFICIENCY ⁹⁰
POWER LOSS
0
10
20
30
40
50
LOAD CURRENT (mA)
8570 TA09b
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PART NUMBER
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DESCRIPTION
COMMENTS
550mA (I_SW), 1.4MHz High Efficiency Step-Up DC/DC Converter V_IN: 0.9V to 10V, V_OUT(MAX) = 34V, I_Q = 3mA, I_SD < 1µA,
ThinSOT Package
1.5A (I_SW), 1.4MHz High Efficiency Step-Up DC/DC Converter
V_IN: 1.6V to 18V, V_OUT(MAX) = 35V, I_Q = 1.8mA, I_SD < 1µA,
MS10, 3mm × 3mm DFN Packages
1A (I_SW), 1.2MHz/2.2MHz High Efficiency Step-Up DC/DC
Converter
V_IN: 2.6V to 16V, V_OUT(MAX) = 34V, I_Q = 4.2mA/5.5mA, I_SD < 1µA,
ThinSOT Package
2A (I_SW), 40V, 1.2MHz High Efficiency Step-Up DC/DC Converter V_IN: 2.3V to 16V, V_OUT(MAX) = 38V, I_Q = 3mA, I_SD < 1µA,
ThinSOT Package
Dual Output 350mA (I_SW), Constant Off-Time, High Efficiency
Step-Up DC/DC Converter
V_IN: 1.2V to 15V, V_OUT(MAX) = 34V, I_Q = 20µA, I_SD < 1µA,
MS10 Package
1.5A (I_SW), 1.2MHz/2.7MHz High Efficiency Step-Up DC/DC
Converter
V_IN: 2.6V to 16V, V_OUT(MAX) = 34V, I_Q = 3.2mA, I_SD < 1µA,
MS8E Package
1.1A (I_SW), 1.3MHz High Efficiency Step-Up DC/DC Converter
V_IN: 2.4V to 16V, V_OUT(MAX) = 40V, I_Q = 1.2mA, I_SD < 1µA,
ThinSOT, 2mm × 3mm DFN Packages
3A Full-Featured DC/DC Converter with Soft-Start and Inrush
Current Protection
V_IN: 2.5V to 24V, V_OUT(MAX) = 40V, I_Q = 5mA, I_SD < 1µA,
DFN, TSSOP Packages
2A (I_SW), 42V, 2.5MHz, High Efficiency Step-Up DC/DC
Converter
V_IN: 2.5V to 32V, V_OUT(MAX) = 42V, I_Q = 1mA, I_SD = <1µA,
3mm × 3mm DFN-8, MSOP-8E
3.3A (I_SW), 42V, 2.5MHz, High Efficiency Step-Up DC/DC
Converter
V_IN: 2.5V to 22V, V_OUT(MAX) = 42V, I_Q = 1.9mA, I_SD = <1µA,
4mm × 3mm DFN-14, MSOP-16E
6A (I_SW), 42V, 2.5MHz, High Efficiency, Step-Up DC/DC
Converter
V_IN: 2.5V to 16V, V_OUT(MAX) = 42V, I_Q = 1.9mA, I_SD = <1µA,
4mm × 5mm DFN-20, TSSOP-20
Dual Channel, 3A (I_SW), 42V, 2.5MHz, High Efficiency Step-Up V_IN: 2.5V to 22V, V_OUT(MAX) = 42V, I_Q = 2.1mA, I_SD = <1µA,
DC/DC Converter
4mm × 7mm DFN-24
1A (I_SW), 65V 1.5MHz, High Efficiency Step-Up DC/DC Converter V_IN: 2.55V to 40V, V_OUT(MAX) = 65V, I_Q = 1.2mA, I_SD = <1µA,
3mm × 3mm DFN-8, MSOP-8E
34 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_F3_o5_r -_m7_o4_r1_e7_{information www.linear.com/LT8570}
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85701f
LT 0215 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2015