EP5358LUI Datasheet PDF - Enpirion


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EP5358LUI
Enpirion

Part Number EP5358LUI
Description 500mA Synchronous Buck Regulator
Page 14 Pages

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EP5358LUI/EP5358HUI
500mA Synchronous Buck Regulator
with Integrated Inductor
RoHS Compliant; Halogen Free
Description
The EP5358xUI (x = L or H) is a 500mA
PowerSOC. The EP5358xUI integrates MOSFET
switches, control, compensation, and the
magnetics in an advanced 2.5mm x 2.25mm
micro-QFN Package.
Integrated magnetics enables a tiny solution
footprint, low output ripple, low part-count, and
high reliability, while maintaining high efficiency.
The complete solution can be implemented in as
little as 15mm2.
The EP5358xUI uses a 3-pin VID to easily select
the output voltage setting. Output voltage
settings are available in 2 optimized ranges
providing coverage for typical VOUT settings.
The VID pins can be changed on the fly for fast
dynamic voltage scaling. EP5358LUI further has
the option to use an external voltage divider.
The EP5358xUI is a perfect solution for noise
sensitive and space constrained applications that
require high efficiency.
Features
Integrated Inductor Technology
2.5mm x 2.25mm x 1.1mm uQFN package
Total Solution Footprint < 15mm2
Low VOUT ripple for RF compatibility
High efficiency, up to 93%
500mA continuous output current
Less than 1µA standby current
5 MHz switching frequency
3 pin VID for glitch free voltage scaling
VOUT Range 0.6V to VIN – 0.25V
Short circuit and over current protection
UVLO and thermal protection
IC level reliability in a PowerSOC solution
Application
Wireless and RF applications
Wireless broad band data cards
Smart phone and portable media players
Advanced Low Power Processors, DSP, IO,
Memory, Video, Multimedia Engines
5.4
mm
2.7
mm
EN5358xUI
VIN
2.2uF
AVIN
VSENSE
PVIN
VOUT
ENABLE
EP5358HUI
VS0
VS1
VS2 PGND
AGND
VOUT
10uF
Figure 1: Total Solution Footprint (Not to Scale)
Figure 2: Typical Application Schematic
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Ordering Information
EP5358LUI/EP5358HUI
Pin Assignments (Top View)
Part Number
EP5358LUI
EP5358HUI
EP5358LUI-E
EP5358HUI-E
Comment
Package
LOW VID Range 16-pin QFN T&R
HIGH VID Range 16-pin QFN T&R
EP5358LUI Evaluation Board
EP5358HUI Evaluation Board
NC(SW) 1
PGND 2
PGND 3
VFB 4
VSENSE 5
AGND 6
16 15
78
14 PVIN
13 AVIN
12 ENABLE
11 VS0
10 VS1
9 VS2
Figure 3: EP5358LUI Pin Out Diagram (Top View)
NC(SW) 1
PGND 2
PGND 3
NC 4
VSENSE 5
AGND 6
16 15
78
14 PVIN
13 AVIN
12 ENABLE
11 VS0
10 VS1
9 VS2
Pin Description
Figure 4: EP5358HUI Pin Out Diagram (Top View)
PIN
1, 15,
16
2,3
4
5
6
7, 8
9, 10,
11
NAME
NC(SW)
PGND
VFB/NC
VSENSE
AGND
VOUT
VS2, VS1,
VS0
FUNCTION
NO CONNECT – These pins are internally connected to the common switching node of the
internal MOSFETs. NC (SW) pins are not to be electrically connected 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 to the device.
Power ground. Connect this pin to the ground electrode of the Input and output filter
capacitors.
EP5358LUI: Feed back pin for external divider option.
EP5358HUI: No Connect
Sense pin for preset output voltages. Refer to application section for proper configuration.
Analog ground. This is the quiet ground for the internal control circuitry, and the ground
return for external feedback voltage divider
Regulated Output Voltage. Refer to application section for proper layout and decoupling.
Output voltage select. VS2 = pin 9, VS1 = pin 10, VS0 = pin 11.
EP5358LUI: Selects one of seven preset output voltages or an external resistor divider.
EP5358HUI: Selects one of eight preset output voltages.
(Refer to section on output voltage select for more details.)
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PIN
12
13
14
NAME
ENABLE
AVIN
PVIN
FUNCTION
Output Enable. Enable = logic high; Disable = logic low
Input power supply for the controller circuitry.
Input Voltage for the MOSFET switches.
EP5358LUI/EP5358HUI
Absolute Maximum Ratings
CAUTION: Absolute Maximum ratings are stress ratings only. Functional operation beyond the
recommended operating conditions is not implied. Stress beyond the absolute maximum ratings may
cause permanent damage to the device. Exposure to absolute maximum rated conditions for
extended periods may affect device reliability.
PARAMETER
Input Supply Voltage
Voltages on: ENABLE, VSENSE, VSO – VS2
Voltages on: VFB (EP5358LUI)
Maximum Operating Junction Temperature
Storage Temperature Range
Reflow Temp, 10 Sec, MSL3 JEDEC J-STD-020C
ESD Rating (based on Human Body Mode)
SYMBOL
VIN
TJ-ABS
TSTG
MIN
-0.3
-0.3
-0.3
-65
MAX
6.0
VIN+ 0.3
2.7
150
150
260
2000
UNITS
V
V
V
°C
°C
°C
V
Recommended Operating Conditions
PARAMETER
Input Voltage Range
Operating Ambient Temperature
Operating Junction Temperature
SYMBOL
VIN
TA
TJ
MIN
2.4
-40
-40
MAX
5.5
+85
+125
UNITS
V
°C
°C
Thermal Characteristics
PARAMETER
Thermal Resistance: Junction to Ambient –0 LFM (Note 1)
Thermal Overload Trip Point
Thermal Overload Trip Point Hysteresis
SYMBOL
θJA
TJ-TP
TYP
85
+155
25
UNITS
°C/W
°C
°C
Note 1: Based on a four layer copper board and proper thermal design per JEDEC EIJ/JESD51 standards
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EP5358LUI/EP5358HUI
Electrical Characteristics
NOTE: TA = -40°C to +85°C unless otherwise noted. Typical values are at TA = 25°C, VIN = 3.6V.
CIN = 2.2µF 0603 MLCC, COUT = 10µF 0805 MLCC
PARAMETER
Operating Input Voltage
Range
Under Voltage Lock-out –
VIN Rising
Under Voltage Lock-out –
VIN Falling
Drop Out Resistance
Output Voltage Range
Dynamic Voltage Slew
Rate
VID Preset VOUT Initial
Accuracy
Line Regulation
Load Regulation
Temperature Variation
Output Current
Shut-down Current
OCP Threshold
Feedback Pin Voltage
Initial Accuracy
Feedback Pin Input
Current
VS0-VS2, Pin Logic Low
VS0-VS2, Pin Logic High
VS0-VS2, Pin Input
Current
Enable Pin Logic Low
Enable Pin Logic High
Enable Pin Current
Operating Frequency
Soft Start Operation
Soft Start Slew Rate
SYMBOL
VIN
TEST CONDITIONS
VUVLO_R
VUVLO_F
RDO
VOUT
VSLEW
ΔVOUT
ΔVOUT_LINE
ΔVOUT_LOAD
ΔVOUT_TEMPL
IOUT
ISD
ILIM
VFB
Input to Output Resistance
EP5358LUI (VDO = ILOAD X RDO)
EP5358HUI
EP5358LUI
EP5358HUI
TA = 25°C, VIN = 3.6V;
ILOAD = 100mA ;
0.8V VOUT 3.3V
2.4V VIN 5.5V
0A ILOAD 600mA
-40°C TA +85°C
Enable = Low
2.4V VIN 5.5V
0.6V VOUT 3.3V
TA = 25°C, VIN = 3.6V;
ILOAD = 100mA ;
0.8V VOUT 3.3V
IFB Note 1
VVSLO
VVSHI
IVSX Note 1
VENLO
VENHI
IENABLE
FOSC
Note 1
ΔVSS
EP5358HUI
EP5358LUI
MIN
2.4
0.6
1.8
TYP
2.0
1.9
350
4
8
-2
0.03
0.48
24
500 600
0.75
1.25
1.4
.588
0.6
<100
0.0
1.4
<100
1.4
<100
5
8
4
Note 1: Parameter guaranteed by design
MAX UNITS
5.5 V
V
500
VIN-VDO
3.3
V
m
V
V/mS
+2 %
%/V
%/A
ppm/°C
mA
µA
A
0.612
V
nA
0.3 V
VIN V
nA
0.3 V
V
nA
MHz
V/mS
©Enpirion 2009 all rights reserved, E&OE
www.Da0t3a5S4h1eet.in
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Rev:A




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