LTC3826_15 Datasheet, PDF (36/36 Pages) Linear Technology – 30A IQ, Dual, 2-Phase Synchronous Step-Down Controller

LTC3826
TYPICAL APPLICATION
C_SS1
0.01μF
C_ITH1A
150pF
C_ITH1
560pF
R_ITH1
105k
R_A1
68.1k
39pF
R_B1
215k
C1
1nF
R_A2
39.2k
C_ITH2
330pF
R_ITH2
105k
C_ITH2A
68pF
C_SS2
0.01μF
C2
1nF
R_B2
353k
22pF
High Efficiency Dual 3.3V/8V Step-Down Converter
LTC3826
I_TH1
TRACK/SS1
PGOOD2
V_FB1
PGOOD1
SENSE1⁺
TG1
SENSE1^–
SW1
PLLLPF
PHASMD
CLKOUT
PLLIN/MODE
SGND
RUN1
RUN2
BOOST1
BG1
V_IN
PGND
EXTV_CC
SENSE2^–
INTV_CC
SENSE2⁺
BG2
V_FB2
BOOST2
I_TH2
SW2
TRACK/SS2
TG2
FOLDDIS
100k
100k
C_B1 0.47μF
D1
C_INT2
4.7μF
D2 C_B2
0.47μF
MTOP1 _L1
1.2μH
R_SNS1
7mΩ
MBOT1
C_IN1
10μF
C_IN2
10μF
C_OUT1
150μF
×2
V_OUT1
3.3V
10A
V_IN
12V
MTOP2 _L2
7.2μH
R_SNS2
20mΩ
MBOT2
3826 TA06
V_OUT2
8V
C_{OUT2 2A}
150μF
MTOP1, MTOP2, MBOT1, MBOT2: Si7848DP
L1: CDEP105-1R2M, L2: CDEP105-7R2M
C_OUT1, C_OUT2 = SANYO 10TPD150M
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
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I_OUT up to 20A
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0.8V ≤ V_OUT ≤ 14V; 4V ≤ V_IN ≤ 36V
LTC3729
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Expandable from 2-Phase to 12-Phase, Uses all Surface Mount
Components, V_IN up to 36V
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LTC3835/LTC3835-1
LTC3845
LTC3850
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Low I_Q Dual Synchronous Controller
Low I_Q Synchronous Step-Down Controller
Low I_Q Synchronous Step-Down Controller
Dual, 550kHz, 2-Phase Synchronous Step-Down Controller
60A to 240A Output Current, 0.6V ≤ V_OUT ≤ 6V, 4.5V ≤ V_IN ≤ 32V
4V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ 10V, 80μA Quiescent Current
Single Channel LTC3827/LTC3827-1
4V ≤ V_IN ≤ 60V, 1.23V ≤ V_OUT ≤ 36V, 120μA Quiescent Current
Dual 180° Phased Controllers, V_IN 4V to 24V, 97% Duty Cycle,
4x4 QFN-28, SSOP-28
No R_SENSE is a trademark of Linear Technology Corporation.
3826fc
36 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
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LT 0109 REV C • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2007