LP8758-E0_15 Datasheet, PDF (1/5 Pages) Texas Instruments – LP8758-E0 Four Output Step-Down DC-DC Regulator

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LP8758-E0
SNVSAC6 – OCTOBER 2015
LP8758-E0 Four Output Step-Down DC-DC Regulator
1 Features
•1 Four High-Efficiency Step-Down DC-DC Converter
Cores:
– Maximum Output Current 4 A Per Core
– Auto PWM-PFM and Forced-PWM Operations
– Programmable Output Voltage Slew-Rate from
30 mV/µs to 0.5 mV/µs
– Input Voltage Range = 2.5 V to 5.5 V
– V_OUT Range = 0.5 V to 3.36 V with DVS
• Programmable Start-up and Shutdown
Sequencing With Enable Signal
• I²C-Compatible Interface Which Supports
Standard (100 kHz), Fast (400 kHz), Fast+ (1
MHz), and High-Speed (3.4 MHz) Modes
• Interrupt Function with Programmable Masking
• Load Current Measurement
• Output Short-Circuit and Overload Protection
• Spread-Spectrum Mode for EMI Reduction
• The Four Cores Operate 90° out of Phase
Thereby Reducing Input Ripple Current
• Over-Temperature Warning and Protection
• Undervoltage Lockout (UVLO)
2 Applications
• Smart Phones, eBooks and Tablets
• Network Processor Cards (NPCs), Wireless and
DSL Modems
• Solid State Drives
• Gaming Devices
3 Description
The LP8758-E0 is designed to meet the power
management requirements for low-power processors
in mobile phones, network cards, and similar
applications. The device contains four step-down DC-
DC converter cores, which provides four output
voltage rails. The device is controlled by an I²C-
compatible serial interface.
The automatic PWM-PFM (AUTO mode) operation
maximizes efficiency over a wide output-current
range.
The LP8758-E0 supports programmable start-up and
shutdown sequencing synchronized to Enable signal.
The protection features include short-circuit
protection, current limits, input supply UVLO, and
temperature warning and shutdown functions.
Several error flags are provided for status information
of the device. In addition, the LP8758-E0 device
supports load current measurement without the
addition of external current sense resistors. During
start-up and voltage change, the device controls the
output slew rate to minimize output voltage overshoot
and the inrush current.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LP8758-E0
DSBGA (35)
2.88 mm × 2.13 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Efficiency vs Output Current
LP8758
V_IN
VIN_B0
SW_B0
VIN_B1
FB_B0
VIN_B2
VIN_B3
VANA
SW_B1
FB_B1
NRST
SDA
SCL
nINT
EN1
EN2
SW_B2
FB_B2
SW_B3
FB_B3
GNDs
V_OUT0
V_OUT1
V_OUT2
V_OUT3
100
95
90
85
80
75
70
0.001
0.01
0.1
Output Current (A)
V_IN = 3.3 V
2.5 V
1.8 V
1
5
D038
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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.