LP8758-E3系列介绍资料

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LP8758-E3

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四通道、单相、4A 输出直流/直流降压转换器

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The LP8758-E3 device is designed to meet 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, providing 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-E3 supports programmable start-up and shutdown sequencing synchronized to hardware Enable input 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-E3 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.

Fully Integrated Quad Buck, up to 4-A Programmable Maximum Output Current Per Buck
- 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 That 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 Buck Cores Operate 90° out of Phase Thereby Reducing Input Ripple Current
Overtemperature Warning and Protection
Undervoltage Lockout (UVLO)

Regulated outputs (#)	4
Configurability	Factory programmable, Software configurable
Vin (min) (V)	2.5
Vin (max) (V)	5.5
Iout (max) (A)	4
Features	Adjustable current limit, Dynamic voltage scaling, Enable, I2C, Light-load efficiency, Multiple outputs, Output discharge, Phase interleaving, Power good, Remote sense, Synchronous rectification
Step-up DC/DC converter	0
Step-down DC/DC converter	4
Step-down DC/DC controller	0
Step-up DC/DC controller	0
LDO	0
Iq (typ) (mA)	0.006
Rating	Catalog
Switching frequency (max) (kHz)	3000
Operating temperature range (°C)	-40 to 85
Shutdown current (ISD) (typ) (µA)	1
Switching frequency (typ) (kHz)	3000

DSBGA (YFF)

6.6 mm² 2.2 x 3

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LP8758-E3

四通道、单相、4A 输出直流/直流降压转换器

4000-306-326