EN5311QI Converter Datasheet

EN5311QI Datasheet, PDF, Equivalent


Part Number

EN5311QI

Description

Step-Down DC-DC Switching Converter

Manufacture

Intel

Total Page 22 Pages
Datasheet
Download EN5311QI Datasheet


EN5311QI
DataSheeT – enpirion® power solutions
EN5311QI 1A PowerSoC
Step-Down DC-DC Switching Converter with Integrated Inductor
DESCRIPTION
The Ultra-Low-Profile EN5311QI is targeted to
applications where board area and profile are critical.
EN5311QI is a complete power conversion solution
requiring only two low cost ceramic MLCC caps.
Inductor, MOSFETS, PWM, and compensation are
integrated into a tiny 5mm x 4mm x 1.1mm QFN
package. The EN5311QI is engineered to simplify
design and to minimize layout constraints. 4 MHz
switching frequency and internal type III
compensation provides superior transient response.
With a 1.1 mm profile, the EN5311QI is ideal for space
and height constrained applications.
A 3-pin VID output voltage selector provides seven
pre-programmed output voltages along with an
option for external resistor divider. Output voltage
can be programmed on-the-fly to provide fast,
dynamic voltage scaling.
FEATURES
Revolutionary Integrated Inductor
5mm x 4mm x1.1mm QFN package
Very small total solution foot print
4 MHz switching frequency
Only two low cost MLCC caps required
Designed for low noise/low EMI
Very low ripple voltage; 5mVp-p Typical
High efficiency, up to 95%
Wide 2.4V to 6.6V input range
1000mA continuous output current
Less than 1 µA standby current.
Excellent transient performance
3 Pin VID Output Voltage select
External divider: 0.6V to VIN-Vdropout
100% duty cycle capable
Short circuit and over current protection
UVLO and thermal protection
RoHS compliant; MSL 3 260°C reflow
APPLICATIONS
Area constrained applications
Noise Sensitive Applications such as A/V and RF
LDO replacement for improved thermals
Set top box/home gateway
Smart phones, PDAs
VoIP and Video phones
Personal Media Player
VIN
4.7µF
VOLTAGE
SELECT
ENABLE VSENSE
VIN VOUT
EN5311QI
VS0 VFB
VS1
VS2 GND
VOUT
COUT
Figure 1: Simplified Applications Circuit
VIN
ENABLE
UVLO
Thermal Limit
Current Limit
Soft Start
(-)
PWM
Comp
(+)
Sawtooth
Generator
Logic
P-Drive
N-Drive
Compensation
Network
VOUT
GND
VSENSE
(-)
Error
Amp
(+)
Switch
VFB
VREF
DAC
Voltage
Select
Package Boundry
VS0 VS1 VS2
Figure 2. Featuring Integrated Inductor Technology
Page 1
03799
March 1, 2019
Rev H

EN5311QI
Datasheet | Intel® Enpirion® Power Solutions: EN5311QI
ORDERING INFORMATION
Part Number
EN5311QI
Package Markings TJ Rating
Package Description
N5311
-40°C to +125°C 20-pin (5mm x 4mm x 1.1mm) QFN
EVB-EN5311QI EVB-EN5311QI QFN Evaluation Board
Packing and Marking Information: https://www.intel.com/support/quality-and-reliability/packing.html
PIN FUNCTIONS
Figure 3: Pin Diagram (Top View)
NOTE A: NC pins are not to be electrically connected to each other or to any external signal, ground, or voltage. However,
they must be soldered to the PCB. Failure to follow this guideline may result in part malfunction or damage.
NOTE B: White ‘dot’ on top left is pin 1 indicator on top of the device package.
Page 2
03799
March 1, 2019
Rev H


Features DataSheeT – enpirion® power solutions EN5311QI 1A PowerSoC Step-Down DC-DC Switching Converter with Integrated Ind uctor DESCRIPTION The Ultra-Low-Profil e EN5311QI is targeted to applications where board area and profile are critic al. EN5311QI is a complete power conver sion solution requiring only two low co st ceramic MLCC caps. Inductor, MOSFETS , PWM, and compensation are integrated into a tiny 5mm x 4mm x 1.1mm QFN packa ge. The EN5311QI is engineered to simpl ify design and to minimize layout const raints. 4 MHz switching frequency and i nternal type III compensation provides superior transient response. With a 1.1 mm profile, the EN5311QI is ideal for space and height constrained applicatio ns. A 3-pin VID output voltage selector provides seven pre-programmed output v oltages along with an option for extern al resistor divider. Output voltage can be programmed on-the-fly to provide fa st, dynamic voltage scaling. FEATURES Revolutionary Integrated Inductor • 5mm x 4mm x1.1mm QFN package .
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