500mA, Ulotra-Low IQ,
Ultra-Fast LDO Regulator
EA9103D
Datasheet
General Description
The EA9103D is designed for portable RF and wireless applications with demanding performance
and space requirements. The EA9103D performance is optimized for battery-powered systems to
deliver ultra low quiescent current. Regulator ground current increases only slightly in dropout,
further prolonging the battery life. The EA9103D also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power applications, critical in hand-held wireless
devices. The EA9103D consumes less than 0.1uA in shutdown mode. The other features
include ultra low dropout voltage, high output accuracy, current limiting protection and high ripple
rejection ratio. The EA9103D is available in the SOT23-5 and DFN 1x1-4L packages.
Features
0.3uA Ultra-Low Quiescent Current
2V to 7V Input Voltage Range
Low Dropout: 200mV@200mA
500mA Output Current
1.2V/1.8V/2.8V/2.5V/3.3V Output Voltage
High PSRR: -70dB at 1KHz
< 0.1uA Standby Current When Shutdown
Fast Discharge
Current Limiting and Thermal Shutdown Protection
Available in SOT-23-5 and DFN 1x1-4L Packages
Applications
Reference Power
Portable Devices
Bluetooth, Wireless Handsets
Pin Configurations
VOUT
NC
5
4
VIN
EN
GND
1
2
3
VIN
GND
EN
SOT23-5
1
VOUT
GND
DFN 1x1-4L
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
Ver. 1.0
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Pin Description
Pin No.
Pin Name
Function Description
SOT23-5
DFN
1x1-4L
VIN
Power input voltage pin.
1
4
GND
Ground pin.
2
2, EP
EN
Enable pin.
3
3
NC
Not Connect.
4
--
Output voltage pin.
5
1
VOUT
Do not leave this pin floating.
Function Block Diagram
VIN
VOUT
Current Limit
& Short Circuit
Protection
Error
Amplifier
EN
Thermal
Protection
Bandgap
GND
Figure 1. EA9103D internal function block diagram
Ver. 1.0
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
2
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Absolute Maximum Ratings
Parameter
Value
Input Supply Voltage (VIN)
-0.3V to +9V
Output Voltage (VOUT)
-0.3V to (VIN+0.3)V
Output Current (IOUT)
550mA
Lead Temperature (Soldering, 10 sec)
+260°C
Storage Temperature Range (TS)
-55°C to +150°C
ESD Susceptibility (HBM)
2kV
ESD Susceptibility (MM)
200V
Note (1):Stresses beyond those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device.
Exposure to “Absolute Maximum Ratings” conditions for extended periods may affect device reliability and
lifetime.
Package Thermal Characteristics
Parameter
Value
SOT-23-5/DFN 1x1-4L Thermal Resistance (θJC)
125°C/W
SOT-23-5/DFN 1x1-4L Thermal Resistance (θJA)
220°C/W
SOT-23-5/DFN 1x1-4L Power Dissipation at TA=25°C (PDmax)
0.55W
Note (1): PDmax is calculated according to the formula: PDMAX=(TJMAX-TA)/ θJA.
Recommended Operating Conditions
Parameter
Value
Input Operating Voltage Range (VIN)
+2V to +7V
Ambient Temperature Range (TA)
-40°C to +85°C
Junction Temperature Range (TJ)
-40°C to +125°C
3
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
Ver. 1.0
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Electrical Characteristics
VIN= VOUT +1V, VOUT = 3.3V, CIN= COUT =1uF, TA=25°C, unless otherwise noted
Parameter
Symbol
Output Voltage Accuracy
ΔVOUT
Output Loading Current
ILOAD
Current Limit
ILI M
Short Circuit Current
ISC
Quiescent Current
IQ
Dropout Voltage
VDROP
Test Conditions
IOUT = 1mA
Min
Typ
-1.5
VEN = VIN, VIN
>2.2V
Max
Unit
1.5
%
500
mA
550
mA
RLOAD = 1Ω
90
mA
VEN ≥ 1.2V, IOUT =
0mA
0.3
0.8
uA
IOUT = 200mA,
VOUT > 2.8V
220
260
mV
IOUT = 300mA,
VOUT > 2.8V
370
410
mV
VIN = (VOUT+1V) to
7V, IOUT = 1mA
0.3
%
Line Regulation
ΔVLINE
Load Regulation
ΔLOAD
1mA < IOUT <
300mA
35
mV
Standby Current
ISTBY
VEN = GND,
Shutdown
0.1
uA
0.1
uA
0.4
V
EN Leakage Current
IEN
EN Threshold Low
Voltage
VIL
VIN = 3V to 5.5V,
Shutdown
EN Threshold High
Voltage
VIH
VIN = 3V to 5.5V,
Start-up
10Hz to 100kHz,
IOUT = 200mA,
COUT = 1uF
Output Noise Voltage
Power Supply Rejection
Rate f = 1kHz
Power Supply Rejection
Rate f = 10kHz
Thermal Shutdown
Threshold
PSRR
TSD
COUT = 1uF, IOUT =
100mA
1.2
V
100
uVRMS
-70
dB
-65
dB
165
°C
Note (1): MOSFET on-resistance specifications are guaranteed by correlation to wafer level measurements.
(2): Thermal shutdown specifications are guaranteed by correlation to the design and characteristics analysis.
Ver. 1.0
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
4
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Application Circuit Diagram
VIN
VIN
VOUT
C1
1uF
VOUT
C2
1uF
EN
ON OFF
GND
EA9103D
Figure 2. Typical application circuit diagram
Ordering Information
Part Number
Package Type
Packing Information
EA9103DVVT5R
SOT-23-5
Tape & Reel / 3000
EA9103DVVDGR
DFN 1x1-4L
Tape & Reel / 3000
Note (1): “VV”: Output voltage version code.
(2): “T5/DG”: Package type code.
(3): “R”: Tape & Reel.
5
Output Voltage Version Code
12
Output Voltage
1.2V
18
1.8V
28
2.8V
25
2.5V
33
3.3V
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
Ver. 1.0
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Typical Operating Characteristics
Ver. 1.0
Line Regulation
Load Regulation
Dropout Voltage
PSRR
Load Transient Response
Short Circuit
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
6
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Application Information
Like any low-dropout regulator, the external capacitors used with the EA9103D must be carefully
selected for regulator stability and performance. Using a capacitor whose value is > 1uF on the
EA9103D input and the amount of capacitance can be increased without limit. The input capacitor
must be located a distance that less than 0.5 inch from the input pin of the device to a clean analog
ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor with
larger value and lower ESR (equivalent series resistance) provides better PSRR and line transient
response. The output capacitor must meet both requirements for minimum amount of capacitance
and ESR in all LDOs application. The EA9103D is designed specifically to work with low ESR
ceramic output capacitor in space-saving and performance consideration. Using a ceramic
capacitor whose value is at least 1uF with ESR is > 25mΩ on the EA9103D output ensures stability.
The EA9103D still works well with output capacitor of other types due to the wide stable ESR range.
Output capacitor of larger capacitance can reduce noise and improve load transient response,
stability and PSRR. The EA9103D features an LDO regulator enable/disable function. To assure
the LDO regulator will switch on, the EN turn on control level must be greater than 1.2V. The LDO
regulator will go into the shutdown mode when the voltage on the EN pin falls below 0.4V. The
EA9103D have a quick-discharge function to protecting the system.
Thermal Considerations
Thermal protection limits power dissipation in EA9103D. When the operation junction temperature
exceeds 165°C, the OTP circuit starts the thermal shutdown function turn the pass element off.
The pass element turn on again after the junction temperature cools by 30°C. For continue
operation, do not exceed absolute maximum operation junction temperature 125°C. The
maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate
of surroundings airflow and temperature difference between junction to ambient. The maximum
power dissipation can be calculated by following formula:
PD(MAX) = ( TJ(MAX) - TA ) / θJA
Where TJ(MAX) is the maximum operation junction temperature 125°C, TA is the ambient temperature
and the θJA is the junction to ambient thermal resistance. For recommended operating conditions
specification of EA9103D, the TJ(MAX) is the maximum junction temperature of the die (125°C) and TA
is the maximum ambient temperature. The junction to ambient thermal resistance θJA for SOT23-5
package is 220°C/W.
7
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
Ver. 1.0
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
Package Information
SOT-23-5 Package
A
4
5
B
K
D
L
1
3
2
C
M
N
C1
Top View
Recommended Layout Pattern
E
H1 H
G
F
H2
Side View
Front View
Unit: mm
A
Dimension
Min
Max
0.30
0.50
K
Dimension
Typ
1.40
B
2.65
2.95
L
1.40
C
0.85
1.05
M
0.95
C1
1.80
2.00
N
0.65
D
1.50
1.70
E
2.82
3.02
F
0.30
0.60
G
0.10
0.20
H
1.05
1.25
H1
1.05
1.15
H2
0.00
0.10
Symbol
Ver. 1.0
Symbol
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
8
EA9103D
500mA, Ultra-Low IQ, Ultra-Fast LDO
Datasheet
DFN 1mmx1mm-4L Package
D
4
3
E
1
2
Top View
Side View
L3
b
3
4
L2
L
E2
D2
A
c
D3
A1
E3
L4
L5
2
Side View
e
1
Front View
Unit: mm
Symbol
A
A1
0.00
0.02
0.05
b
0.15
0.20
0.25
c
Max
0.40
0.127
D
0.95
1.00
1.05
D2
0.38
0.48
0.58
D3
0.23
0.33
0.43
e
9
Dimension
Nor
Min
0.35
0.65
E
0.95
1.00
1.05
E2
0.38
0.48
0.58
E3
0.23
0.33
0.43
L
0.20
0.25
0.30
L2
0.103
L3
0.075
L4
0.208
L5
0.200
Copyright © 2019 Everanalog Integrated Circuit Limited. All Rights Reserved.
Ver. 1.0