LM10504 Datasheet, PDF (1/35 Pages) Texas Instruments – Triple Buck + LDO Power Management Unit

LM10504
February 14, 2012
Triple Buck + LDO Power Management Unit
1.0 General Description
The LM10504 is an advanced PMU containing three config-
urable, high-efficiency buck regulators for supplying variable
voltages. The device is ideal for supporting ASIC and SOC
designs for Solid-State and Flash drives.
The LM10504 operates cooperatively with ASIC to optimize
the supply voltage for low-power conditions and Power Sav-
ing modes via the SPI interface. It also supports a 250 mA
LDO and a programmable Interrupt Comparator.
2.0 Key Specifications
■ ^{Programmable Buck Regulators:}
— Buck 1: 1.1V to 3.6V; 1.6A
— Buck 2: 1.1V to 3.6V; 1A
— Buck 3: 0.7V to 1.335V; 1A
■ ^{±3% feedback voltage accuracy}
■ ^{Up to 95% efficient buck regulators}
■ ^{2MHz switching frequency for smaller inductor size}
■ ^{2.8 x 2.8 mm, 0.4 mm pitch 34-bump micro SMD package}
3.0 Applications
■ ^{Solid-State Drives}
4.0 Features
■ ^{Three highly efficient programmable buck regulators}
— Integrated FETs with low R_DSON
— Bucks operate with their phases shifted to reduce the
input current ripple and capacitor size
— Programmable Output Voltage via the SPI interface
— Overvoltage and Undervoltage Lockout
— Automatic internal soft start with Power-on reset
— Current overload and thermal shutdown protection
— PFM mode for low-load, high-efficiency operation
■ ^{Power-down data protection enhances data integrity}
— Bypass mode available on Bucks 1 and 2
■ ^{Deep sleep mode to save power during idle times}
— DEVSLP function
■ ^{Programmable Low-dropout LDO 1.2V to 3.1V, up to 250}
mA
■ ^{SPI-programmable interrupt comparator (2.0V to 4.0V)}
■ ^{Alternate Buck V}_OUTS ^{selectable via V}_SELECT ^{logic pins}
■ ^{Customizable startup sequencing for varied controllers}
■ ^{RESET pin}
5.0 Typical Application Diagram
© 2012 Texas Instruments Incorporated 301769 SNVS739B
30176901
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