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

LTC3815
Typical Application
1.2V/12A 2-Phase Buck Regulator
V_IN
2.25V TO 5.5V
100k
PGOOD
PMBUS
24.9k _1nF
MASTER
PV_IN
V_IN
PGLIM
CLKOUT
PGOOD
RUN_MSTR
LTC3815 _{RUN_STBY}
SCL, SDA, ALERT
SW
MARGIN
MODE/SYNC
PGFD
V_{CC_SENSE}
V_{SS_SENSE}
DA_OUT
ASEL
C_SLEW
R_T
SGND PGND
V_FB
I_TH
REF
TRACK/SS
WP
L1, 0.5µH
1k
10k
V_OUT
1.2V, 12A
C_OUT
100µF
×2
L2
0.5µH
1nF
12k
22nF
0.5%
C_IN: TAIYO YUDEN LMK316BJ226ML-T
C_OUT: MURATA GRM32ER60J107ME20
L1, L2: COILCRAFT XAL6030-331MEB
SLAVE
PV_IN
V_IN
MODE/SYNC
PGLIM
RUN_MSTR
MODE/SYNC
RUN_STBY ^LTC3815
SW
SCL, SDA, ALERT
V_{CC_SENSE}
V_{SS_SENSE}
DA_OUT
MARGIN
PGOOD
PGFD
V_FB
I_TH
REF
TRACK/SS
SGND PGND
ASEL
C_SLEW
R_T
CLKOUT
WP
C_IN
22µF
×2
PMBUS
24.9k _1nF
3815 TA04
Related Parts
PART NUMBER
LTM4676
LTC3880/
LTC3880-1
LTC3882
LTC3883/
LTC3883-1
LTC2977
LTC2974
LTC3616
LTC3887
DESCRIPTION
COMMENTS
Dual 13A or Single 26A Step-Down DC/DC µModule
Regulator with Digital Power System Management
VFa_INulUt pLotgog2in6g.5,VI₂;C0/.P5MV _{B≤uVsOIUnTte(r±f0ac.5e%, 1)6≤m5m.4×V,1±62m%mIO×U5TmAmDC,}
Accuracy,
BGA Package
Dual Output PolyPhase Step-Down DC/DC Controller with
Digital Power System Management
IV^2IC^N/PUMp Btous24InVt,e0rf.5acVe≤wVit^Oh^UE^TE≤P5R.O5VM,
Analog Control Loop,
and 16-Bit ADC
Dual Output PolyPhase Step-Down DC/DC Voltage Mode
Controller with Digital Power System Management
Single Phase Step-Down DC/DC Controller with Digital
Power System Management
Leading Edge Voltage Mode, Synchronizable, 3V ≤ V_IN ≤ 38V,
0.5V ≤ V_OUT ≤ 5.25V
VI_{2ICN/PUMp Btous24InVt,e0rf.5acVe≤wVitOhUETE≤P5R.O5VM,}
Input Current Sense
and 16-Bit ADC
Amplifier,
8-Channel PMBus Power System Manager Featuring
Accurate Output Voltage Measurement
Fault Logging to Internal EEPROM Monitors Eight Output Voltages,
Input Voltage and Die Temperature
Quad Digital Power Supply Manager with EEPROM
Controls and Monitors Four Outputs, 16-Bit ADC, Differential Inputs,
with Fault Logging
6A, 4MHz Monolithic Synchronous Step-Down DC/DC
Converter Up to 95% Efficiency
2.25V ≤ V_IN ≤ 5.5V, 0.6V ≤ V_OUT ≤ V_IN, 100% Duty Cycle Capability,
3mm × 5mm QFN-24
Dual Output PolyPhase Step-Down DC/DC Controller with Enhanced LTC3880 with 2 ASEL Pins, Fast ADC Mode, Power Up Less
Digital Power System Management
Than 70ms, and Both V_OUT Programmable from 0.5V to 5.5V
42 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_Fo3_r5_m-7_o4_re1_i7_{nformation www.linear.com/LTC3815}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3815
3815p
LT 0615 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2015