LTC3826-1 Datasheet, PDF (32/32 Pages) Linear Technology – 30μA IQ, Dual, 2-Phase Synchronous Step-Down Controller

LTC3826-1
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/8.0V Step-Down Converter
I_TH1
TRACK/SS1
V_FB1
SENSE1⁺
PGOOD1
TG1
SENSE1^–
SW1
PLLLPF
BOOST1
PLLIN/MODE
BG1
SGND
V_IN
LTC3826-1
RUN1
PGND
RUN2
SENSE2^–
SENSE2⁺
EXTV_CC
INTV_CC
BG2
V_FB2
BOOST2
I_TH2
SW2
TRACK/SS2
TG2
R2
100k
C_B1 0.47μF
D1
C_INT2
4.7μF
D2 _CB2
0.47μF
MTOP1 _L1
1.2μH
R_SNS1
7mΩ
MBOT1
C_OUT1
150μF
s2
C_IN1
10μF
C_IN2
10μF
V_OUT1
3.3V
10A
V_IN
12V
MTOP2 _L2
7.2μH
R_SNS2
20mΩ
MBOT2
38261 TA06
V_OUT2
C_OUT2 8V
150μF 2A
MTOP1, MTOP2, MBOT1, MBOT
L1: CDEP105-1R2M, L2: CDEP1
C_OUT1, C_OUT2 = SANYO 10TPD1
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PART NUMBER
DESCRIPTION
COMMENTS
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Output Fault Protection, 16-Pin SSOP
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Up to 97% Efficiency, 4V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ (0.9)(V_IN),
I_OUT Up to 20A
3.3V ≤ V_IN ≤ 60V, 100μA Quiescent Current
Current Mode, No R_SENSE, Up/Down Tracking, Synchronizable
0.8V ≤ V_OUT ≤ 14V, 4V ≤ V_IN ≤ 36V
Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components, V_IN Up to 36V
60A to 240A Output Current, 0.6V ≤ V_OUT ≤ 6V, 4.5V ≤ V_IN ≤ 32V
80mA I_Q, 4V ≤ V_IN ≤ 36V, 0.8V ≤ V_OUT ≤ 10V
Single Channel LTC3827/LTC3827-1
Dual 180° Phased Controllers, V_IN 4V to 24V, 97% Duty Cycle,
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PolyPhase is a registered trademark of Linear Technology Corporation. No RSENSE is a trademark of Linear Technology Corporation.
38261fb
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
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LT 0808 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2007