LM10506_14 Datasheet, PDF (1/43 Pages) Texas Instruments – Triple Buck + LDO Power Management Unit

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM10506
SNVS729F – SEPTEMBER 2011 – REVISED AUGUST 2014
LM10506 Triple Buck + LDO Power Management Unit
1 Features
•1 Three Highly Efficient Programmable Buck
Regulators
– Buck Regulator Outputs:
– Buck 1: 1.1 V to 3.6 V; 1.3 A
– Buck 2: 1.1 V to 3.6 V; 400 mA
– Buck 3: 0.7 V to 1.335 V; 600 mA
– ±3% Feedback Voltage Accuracy
– Up to 95% Efficient Buck Regulators
– 2MHz Switching Frequency for Smaller
Inductor Size
– 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
– Bypass Mode Available on Bucks 1 and 2
– PFM Mode for Low-Load, High-Efficiency
Operation
• Low-Dropout LDO 3.2 V, 100 mA
• SPI-Programmable Interrupt Comparator (2 V to 4
V)
• Alternate Buck V_OUT Selectable via H/L Logic Pins
• RESET, STANDBY Pins
2 Applications
Solid-State Drives
3 Description
The LM10506 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.
The LM10506 operates cooperatively with ASIC to
optimize the supply voltage for low-power conditions
and Power Saving modes via the SPI interface. It
also supports a 100-mA LDO and a programmable
Interrupt Comparator.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (MAX)
LM10506
DSBGA (34)
2.84 mm x 2.84 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
space
space
space
Power Supply
3.3/5.0V
C8
2.2 F
C5
4.7 F
C6
4.7 F
C7
4.7 F
Simplified Schematic
C9
2.2 F
IO in_` put
supply
LM10506
VIN_IO
Reset
STANDBY
CS
DI
SPI _DO
CLK
VCOMP
COMP _IRQ
VIN
LDO ^LDO
VIN_B1
VIN_B2
VIN_B3
SW_B1
BUCK1
FB_B1
SW_B2
BUCK2
FB_B2
SW_B3
BUCK3
FB_B3
L1
2.2 H
L2
2.2 H
L3
2.2 H
C4
4.7 F
3.2V
1.1V to 3.6V
C1
22 F
1.1V to 3.6V
C2
22 F
0.7V to1.335V
C3
22 F
System
Control
Host
Controller
VHOST
100 mA
Host 1
Domain
VCC
1.3A
Host 2
Domain
VCCQ
400 mA
Host 3
Domain
VCORE
600 mA
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.