LTC3872-1_15 Datasheet, PDF (20/20 Pages) Linear Technology – No RSENSE Current Mode Boost DC/DC Controller

LTC3872-1
Typical Application
3.3V Input, 5V/2A Output Boost Converter
47pF
1M
1nF
1.8nF
17.4k
V_IN
I_TH RUN/SS V_IN
IPRG
LTC3872-1
GND
SW
V_FB
11k
1%
34.8k
1%
NGATE
D1: DIODES INC. B320
L1: TOKO FDV0630-1R0
M1: VISHAY Si3460DDV
V_IN
L1
C_IN ^3.3V
10µF
1µH
M1
D1
C_OUT
100µF
×2
V_OUT
5V
2A
38721 TA02
Related Parts
PART NUMBER
DESCRIPTION
COMMENTS
LTC3786
Low I_Q Synchronous Step-Up Controller
4.5V(Down to 2.5V After Start-Up) ≤ V_IN ≤ 38V, V_OUT Up to 60V, 55µA
Quiescent Current, 3mm × 3mm QFN-16, MSOP-16E
LTC3787/LTC3787-1 Single Output, Dual Channel Multiphase Synchronous 4.5V(Down to 2.5V After Start-Up) ≤ V_IN ≤ 38V, V_OUT Up to 60V, 50kHz to
Step-Up Controller
900kHz Operating Frequency, 4mm × 5mm QFN-28, SSOP-28
LTC3788/LTC3788-1 Multiphase, Dual Output Synchronous Step-Up
Controller
4.5V(Down to 2.5V After Start-Up) ≤ V_IN ≤ 38V, V_OUT Up to 60V, 50kHz to
900kHz Fixed Operating Frequency, 5mm × 5mm QFN-32, SSOP-28
LTC3862/LTC3862-1 Multiphase, Dual Channel Single Output Current Mode 4V ≤ V_IN ≤ 36V, 5V or 10V Gate Drive, 75kHz to 500kHz Fixed Operating
Step-Up DC/DC Controller
Frequency, SSOP-24, TSSOP-24, 5mm × 5mm QFN-24
LT3757A/LT3758/
LT3759
Boost, Flyback, SEPIC and Inverting Controller
1.6V/2.9V ≤ V_IN ≤ 40V/100V, 100kHz to 1MHz Fixed Operating Frequency,
3mm × 3mm DFN-10 and MSOP-10E
LT3957A/LT3958/
LT3959
Boost, Flyback, SEPIC and Inverting Converters with 1.6V/3V/5V ≤ V_IN ≤ 40V/80V, 100kHz to 1MHz Programmable Operation
Onboard Power Switch
Frequency, 5mm × 6mm QFN Package
LTC1871/LTC1871-1/ Wide Input Range, No R_SENSE Low Quiescent Current 2.5V ≤ V_IN ≤ 36V, 50kHz to 1MHz Fixed Operating Frequency, I_Q = 250µA,
LTC1871-7
Flyback, Boost and SEPIC Controller
MSOP-10
LTC3859AL
Low I_Q, Triple Output Buck/Buck/Boost Synchronous
DC/DC Controller
All Outputs Remain in Regulation Through Cold Crank, 4.5V(Down to
2.5V After Start-Up) ≤ V_IN ≤ 38V, V_OUT(BUCKS) Up to 24V, V_OUT(BOOST) Up
to 60V, I_Q = 28µA
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95_F0_o3_{r m}5-_o7_r4_e1_in7_{formation www.linear.com/LTC3872-1}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3872-1
38721f
LT 0214 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2014