EP5388QI-E ENPIRION [Enpirion, Inc.], EP5388QI-E Datasheet

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EP5388QI-E

Manufacturer Part Number
EP5388QI-E
Description
800mA Synchronous Buck Regulator With Integrated Inductor 3mm x 3mm x 1.1mm Package
Manufacturer
ENPIRION [Enpirion, Inc.]
Datasheet
Product Overview
The
converter
controller,
providing the smallest possible solution size.
The EP5388QI requires only two small MLCC
capacitors to make a complete solution.
Integration of the inductor greatly simplifies
design, contains noise, reduces part count, and
reduces solution footprint. Low output ripple
ensures compatibility with RF systems.
The
frequency
unprecedented level of integration and small
external components. Type III voltage mode
control is used to provide high noise immunity
and wide control loop bandwidth.
The small footprint makes this part ideal for
space
Shutdown current of <1uA extends battery life
Output voltage level is programmed via a 3-pin
VID selector providing seven pre-programmed
output voltages along with an option for
external resistor divider.
Applications
• Noise Sensitive RF Applications
• Area Constrained Applications
• Wireless Data Applications
• Portable Gaming Devices
• Personal Media Players
• Advanced Mobile Processors, DSP, IO,
Ordering Information
EP5388QI-T
EP5388QI-E
Part Number
Memory, Video, Multimedia Engines
EP5388QI
EP5388QI
constrained
with
MOSFETS,
of
Temp Rating (°C)
integrated
4
operates
-40 to +85
is
EP5388QI Evaluation Board
MHz,
a
portable
and
synchronous
at
Inductor,
enabling
Compensation
16-pin QFN T&R
a
applications.
Package
switching
www.enpirion.com
PWM
buck
this
800mA Synchronous Buck Regulator
Product Highlights
Featuring Integrated Inductor Technology
• 3mm x 3mm x 1.1mm QFN package
• Only two low cost MLCC caps required
• 4 MHz switching frequency
• High efficiency, up to 94%
• Up to 800mA continuous output current
• Wide 2.4V to 5.5V input range
• V
• 3-Pin VID output voltage programming
• 100% duty cycle capable
• Less than 1 µA standby current
• Low V
• Short circuit and over current protection
• UVLO and thermal protection
Typical Application Circuit
Figure 1. Typical application circuit.
RoHS compliant; MSL 3 260°C reflow
OUT
V
IN
range 0.6V to V
4.7µF
Voltage
0603
OUT
Select
3mm x 3mm x 1.1mm Package
ripple for RF compatibility
With Integrated Inductor
V
V
V
ENABLE
S0
S1
S2
V
in
EP5388QI
GND
IN
EP5388QI
– 0.5V
V
Sense
V
V
out
FB
RoHS Compliant
Halogen Free
47uF
1206
V
July 2008
OUT

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EP5388QI-E Summary of contents

Page 1

... Portable Gaming Devices • Personal Media Players • Advanced Mobile Processors, DSP, IO, Memory, Video, Multimedia Engines Ordering Information Part Number Temp Rating (°C) EP5388QI-T -40 to +85 EP5388QI-E EP5388QI Evaluation Board 800mA Synchronous Buck Regulator Product Highlights buck Inductor, PWM Compensation Featuring Integrated Inductor Technology • ...

Page 2

... July 2008 Pin Description Figure 2. EP5388QI Package Pin-out. PIN NAME 1, 15, 16 NC(SW) 2,3 PGND 4 VFB 5 VSENSE 6 AGND 7,8 VOUT 9 NC 10, 11, VS2,VS1,VS0 12 13 ENABLE 14 VIN ©Enpirion 2008 all rights reserved, E&OE No Connect. These pins are internally connected to the common switch node of the internal MOSFETs. NC(SW) pins are not to be electrically connected to any external signal, ground, or voltage ...

Page 3

... Thermal Limit Current Limit ENABLE Soft Start Figure 3. EP5388QI Functional block diagram. Absolute Maximum Ratings CAUTION: Absolute Maximum ratings are stress ratings only. Functional operation beyond recommended operating conditions is not implied. Stress beyond absolute maximum ratings may cause permanent damage to the device. Exposure to absolute maximum rated conditions for extended periods may affect device reliability ...

Page 4

... A MIN TYP 2.2 0.145 -2 0.06 0.0003 0.008 -3 1.125 1.5 800 750 0.75 1000 0.585 0.603 10 0.0 1.4 1 0.0 1 340 270 450 www.enpirion.com EP5388QI UNITS °C °C UNITS °C/W °C °C MAX UNITS 2 %/V %/mA %/° 1.875 V/mS mA µA mA 0.621 V nA ...

Page 5

... IN OUT top to bottom. ©Enpirion 2008 all rights reserved, E&OE TEST CONDITIONS ss T Vout = 3. 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 Efficiency, V Output Ripple MIN TYP MAX 1.125 1.5 1.875 2 Load Current (A) = 3.7V 2.5V,1.8V,1.5V, 1.2V, IN OUT top to bottom 1.2V; Load = 500mA. IN OUT www.enpirion.com EP5388QI UNITS V/mS mS ...

Page 6

... Output Ripple 5V 3.3V; Load = 500mA. IN OUT Output Ripple 3.3V 1.8V; Load = 500mA. IN OUT Transient 5.0V 1.2V, Load = 0-800mA. IN OUT ©Enpirion 2008 all rights reserved, E&OE Output Ripple 3.3V Output Ripple 3.3V Transient 5.0V 3.3V, Load = 0-800mA. IN OUT 6 EP5388QI = 1.2V; Load = 500mA. OUT = 2.5V; Load = 500mA. OUT www.enpirion.com ...

Page 7

... Load = 500mA. IN OUT Enable in light blue Dark blue. OUT Detailed Description Functional Overview The EP5388QI is a complete DCDC converter solution requiring only two low cost MLCC capacitors. MOSFET controller, Gate-drive, compensation, inductor are integrated into the tiny 3mm x 3mm x 1.1mm package to provide the smallest ...

Page 8

... Integrated Inductor Enpirion has introduced the world’s first product family featuring integrated inductors. The EP5388QI utilizes a proprietary low loss integrated inductor. The use of an internal inductor localizes the noises associated with the output loop currents. The inherent shielding ...

Page 9

... Output Voltage Select To provide the highest degree of flexibility in choosing output voltage, the EP5388QI uses a 3 pin VID, or Voltage ID, output voltage select arrangement. This allows the designer to choose one of seven preset voltages use an external voltage divider. output of the VID multiplexer sets the value for ...

Page 10

... The input and output filter capacitors should be placed as close to the Recommendation 1: EP5388QI as possible to reduce EMI from input and output loop AC currents. This reduces the physical area of these AC current loops. Recommendation 2: The system ground plane should be the first layer immediately below the surface layer (PCB layer 2) ...

Page 11

... AGND must NOT be connected to the surface layer ground pour. Recommendation 6: As with any switch-mode DC-DC converter, do not run any sensitive signal or control lines under the converter package. Vias Vias Figure 6. PCB layout recommendation. Recommended PCB Footprint ©Enpirion 2008 all rights reserved, E&OE Slit Slit 11 EP5388QI www.enpirion.com ...

Page 12

... July 2008 ©Enpirion 2008 all rights reserved, E&OE 12 EP5388QI www.enpirion.com ...

Page 13

... July 2008 Package Dimensions ©Enpirion 2008 all rights reserved, E&OE 13 EP5388QI www.enpirion.com ...

Page 14

... Enpirion assumes no responsibility for its use or for infringement of patents or other third party rights, which may result from its use. Enpirion products are not authorized for use in nuclear control systems, as critical components in life support systems or equipment used in hazardous environment without the express written authority from Enpirion. ©Enpirion 2008 all rights reserved, E&OE 14 EP5388QI www.enpirion.com ...

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