LTC3834-1 Datasheet, PDF (28/28 Pages) Linear Technology – 30μA IQ Synchronous Step-Down Controller

LTC3834-1
TYPICAL APPLICATIO
PLLLPF
V_IN
0.01μF
RUN
TG
560pF
54k
TRACK/SS
BOOST
I_TH
LTC3834-1
SW
150pF
68.1k
SGND
PLLIN/MODE
INTV_CC
215k
39pF
V_FB
SENSE^–
SENSE⁺
BG
PGND
C_B
0.22μF
C_IN
10μF
D_B
CMDSH-3
L1
3.2μH 0.012Ω
4.7μF
V_IN
4V TO 36V
V_OUT
3.3V
5A
C_OUT
150μF
M1, M2: Si4840DY
L1: CDEP 105-3R2M
C_OUT: SANYO 10TPD150M
38341 TA06
Figure 10. High Efficiency 3.3V, 5A Step-Down Converter
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PART NUMBER
DESCRIPTION
COMMENTS
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2-Phase Operation; 115μA Total No Load I_Q, 4V V _IN 36V
80μA No Load I_Q with One Channel On
80μA No Load I_Q, 4V V _IN 36V, 0.8V V _OUT 10V
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4V V _IN 60V, 1.23V V _OUT 36V, 120μA Quiescent Current
2-Phase Operation; 4V V _IN 24V, 95% Efficiency,
No R_SENSE Option, I_OUT Up to 20A, 4mm × 4mm QFN
No R_SENSE is a trademark of Linear Technology Corporation. PolyPhase is a registered trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
38341f
LT 1107 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2007