LM10507 Datasheet, PDF (1/40 Pages) Texas Instruments – LM10507 Triple Buck + LDO Power Management Unit

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LM10507 Triple Buck + LDO Power Management Unit
LM10507
SNVS999 – MAY 2014
1 Features
•1 Three Highly Efficient Programmable Buck
Regulators
– Integrated FETs with Low R_DS-ON
– Bucks Operate with their Phases Shifted to
Reduce the Input Current Ripple and Capacitor
Size
– Programmable Output Voltage via the SPI
Interface
– Over and Under-Voltage-Lockout
– Automatic Internal Soft Start with Power-On
Reset
– Current Overload and Thermal Shutdown
Protection
– PFM Mode for High Efficiency at Light Load
Conditions
• Low-Dropout Regulator 2.5 V, 250mA
• Hardware ENABLE and PWR_OK Terminal
• Fast Start-up for All Voltage Rails in about 3.5ms
to PWR_OK
• Fast Turn-off / Active Discharge on Regulator
Outputs
• Programmable Buck Regulators:
– Buck 1: 0.9 - 3.4 V; 1.6A
– Buck 2: 0.9 - 3.4 V; 1A
– Buck 3: 0.865 - 1.5 V; 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 µSMD
Package
2 Applications
Solid-State Drives
3 Description
The LM10507 is an advanced PMU containing three
configurable, high-efficiency buck regulators for
supplying variable voltages. The device is ideal for
supporting ASIC and SOC designs for Solid-State
and Flash drives.
LM10507 operates cooperatively with ASIC to
optimize the supply voltage for low power conditions
and power saving modes via SPI interface. It also
supports a 2.5 V 250 mA LDO.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
LM10507
DSBGA (34) 2.82 mm x 2.82 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
Power Supply
3.3 / 5V
Cvin
(x3) ^2.2uF
Cin
4.7uF
VIN
(x3)
VINB
SW
Buck (x3)
FB
2.2uH
Cout
22uF
IO supply
1.75 ± 3.6V
Cinio
2.2uF
(x4)
LDO
VINIO
DEV_SLP
ENABLE
RESET PWR_OK
SPI
LM10507
Cldo
4.7uF
Vldo
Vout1
Vout2
Vout3
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.