LTC3872_15 Datasheet, PDF (22/22 Pages) Linear Technology – No RSENSE Current Mode Boost DC/DC Controller

LTC3872
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
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
3872 TA02
Related Parts
PART NUMBER
LT^®1619
LTC1624
LTC1700
LTC1871-7
LTC1872/LTC1872B
LT1930
LT1931
LTC3401/LTC3402
LTC3704
LTC1871/LTC1871-7
LTC3703/LTC3703-5
LTC3803/LTC3803-5
DESCRIPTION
Current Mode PWM Controller
Current Mode DC/DC Controller
No R_SENSE Synchronous Step-Up Controller
Wide Input Range Controller
SOT-23 Boost Controller
1.2MHz, SOT-23 Boost Converter
Inverting 1.2MHz, SOT-23 Converter
1A/2A 3MHz Synchronous Boost Converters
Positive-to Negative DC/DC Controller
No R_SENSE, Wide Input Range DC/DC Boost Controller
100V Synchronous Controller
200kHz Flyback DC/DC Controller
COMMENTS
300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V_IN Up to 36V
Up to 95% Efficiency, Operating as Low as 0.9V Input
No R_SENSE, 7V Gate Drive, Current Mode Control
Delievers Up to 5A, 550kHz Fixed Frequency, Current Mode
Up to 34V Output, 2.6V V_IN 16V, Miniature Design
Positive-to Negative DC/DC Conversion, Miniature Design
Up to 97% Efficiency, Very Small Solution, 0.5V ≤ V_IN ≤ 5V
No R_SENSE, Current Mode Control, 50kHz to 1MHz
No R_SENSE, Current Mode Control, 2.5V ≤ V_IN ≤ 36V
Step-Up or Step Down, 600kHz, SSOP-16, SSOP-28
Optimized for Driving 6V MOSFETs ThinSOT
22 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_Fo3_r5_m-7_o4_re1_i7_{nformation www.linear.com/LTC3872}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3872
3872fc
LT 1113 REV C • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2007