LTC3815_15 Datasheet, PDF (40/42 Pages) Linear Technology – 6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management

LTC3815
Typical Applications
12V Input, 1.0V/6A Output Buck Regulator
16.2k
12k
330pF
10pF
C1
2.2µF
D1
0.1µF
10Ω
24
23
22 21 20 19
CLKIN CLKOUT SGND INTV_CC BOOST SV_IN
1
18
RT
PV_IN
2
PHMODE
17
PV_IN
3
MODE
4
FB
LTC3605
16
SW
15
SW
C_IN
22µF
×2
L1 0.68µH
5
TRACK/SS
14
SW
6
ITH
13
SW
0.1µF _{RUN PGOOD VON PGND SW SW}
7
8
9
10 11 12
SV_IN
100k
PGND
V_IN
4V TO 15V
0.1µF
C1: AVX 0805ZD225MAT2A
C_IN: TDK C4532X5RIC226M
C_OUT: TDK C3216X5ROJ476M
D1: CENTRAL SEMI CMDSH-3
L1: VISHAY IHLP-2525CZERR68-M01
C_OUT
47µF
×2
3.3V
22.6k
4.99k
SGND
PGOOD
PMBus
100k 10k 10k 10k
PV_IN
V_IN
PGOOD
SCL
SDA
ALERT
PGFD
ASEL
TRACK/SS
C_SLEW
LTC3815
MODE/SYNC
RUN_MSTR
RUN_STBY
CLKOUT
MARGIN
SW
V_{CC_SENSE}
V_{SS_SENSE}
10k
0.5%
R_T
DA_OUT
PGLIM
V_FB
REF
I_TH
SGND PGND WP
C_IN: TAIYO YUDEN LMK316BJ226ML-T
C_OUT: MURATA GRM32ER60J107ME20
L: COILCRAFT XAL6030-331MEB
0.33µH
1k
10k _1nF
47pF
PGOOD DELAY: 190ms
PGOOD THRESHOLD ±10%
FREQUENCY: 1MHz
SOFT-START DELAY: 1ms
MARGIN SLEW RATE: 23%/ms
DCM MODE
PMBus ADDRESS: 0x20
C_OUT
100µF
×2
V_OUT
1.0V
6A
3815 TA04
3815p
40
For more information www.linear.com/LTC3815