EUP7914
150mA Low-Noise LDO in SC-82
Without A Bypass Capacitor
DESCRIPTION
The EUP7914 is an efficient CMOS low dropout (LDO)
voltage regulator optimized for ultra-low-noise
applications. It offers high output accuracy, extremely
low dropout voltage, low ground current and fast
start-up time. The EUP7914 provides a very low noise
output without a bypass capacitor, ideal for RF
applications where a clean supply voltage source is
required. Specifically designed for handheld and
battery-powered devices, the EUP7914 provides a
TTL-logic-compatible enable pin. When the EUP7914
is disabled, power consumption drops nearly to zero.
Key features include current limit, thermal shutdown
and faster transient response.
The EUP7914 works with low-ESR ceramic capacitors.
Available in the SC-82 space saving package which
reduces the amount of board space for power
applications. The EUP7914 offers wide fixed output
voltage versions.
FEATURES
2.5V to 5.5V Input Voltage Range
30µV(rms) Output Noise
90mV Dropout @ 150mA
70dB PSRR at 1kHz No Bypass Capacitor
Low 30µA Ground Current
Guaranteed 150mA Output Current
Stable with a 1µF Ceramic Output Capacitor when
V
OUT
≥
1.5V, or 2.2µF when V
OUT
<1.5V
Excellent Load/Line Transient
Thermal Shutdown and Current Limit
Protection
Available 1.2V to 3.6V Fixed Output Voltages
(50mV increments)
Space-Saving 4-pin SC-82 Package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Cellular Phones
Camera Modules
PDA and Palmtop Computers
Consumer/Personal Electronics
Block Diagram
Figure 1.
DS7914
Ver1.0
Nov. 2008
1
EUP7914
Typical Application Circuit
Figure 2. Fixed-Voltage LDO Regulator
Pin Configurations
Package Type
Pin
Configurations
(Top View)
SC-82
Pin Description
NAME
EN
GND
OUT
IN
PIN
1
2
3
4
DESCRIPTION
The device enable input. Set logic high to enable the device, and connect logic low to
disable the device.
Ground pin
Output voltage of the LDO
Input voltage of the LDO
DS7914
Ver1.0
Nov. 2008
2
EUP7914
Ordering Information
Order Number
EUP7914-12NIR1
EUP7914-15NIR1
EUP7914-18NIR1
EUP7914-25NIR1
EUP7914-28NIR1
EUP7914-285NIR1
EUP7914-30NIR1
EUP7914-33NIR1
Package Type
SC-82
SC-82
SC-82
SC-82
SC-82
SC-82
SC-82
SC-82
Marking
ET
xx
EC
xx
ED
xx
EB
xx
EE
xx
EF
xx
EG
xx
EH
xx
Operating Temperature Range
-40 °C to +85°C
-40 °C to +85°C
-40 °C to +85°C
-40 °C to +85°C
-40 °C to +85°C
-40 °C to +85°C
-40 °C to +85°C
-40 °C to +85°C
EUP7914-
□□□ □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape & Reel
Operating temperature range
I: Industry Standard
Package Type
N: SC-82
Output Voltage
12: 1.2V
15: 1.5V
18: 1.8V
25: 2.5V
28: 2.8V
285: 2.85V
30: 3.0V
33: 3.3V
DS7914
Ver1.0
Nov. 2008
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EUP7914
Absolute Maximum Ratings (1)
IN,OUT and EN to GND-----------------------------------------------------------
-0.3V to 6V
Junction Temperature ---------------------------------------------------------------------- 150°C
Storage Temperature Range ---------------------------------------------------- -65°C to +150°C
Lead Temperature -------------------------------------------------------------------------- 260°C
Maximum Power Dissipation SC-82 ----------------------------------------------------
0.3W
Thermal Resistance
θ
JA
(SC-82) --------------------------------------------------------- 320°C/W
ESD Rating
Human Body Model ---------------------------------------------------------------------
±
2kV
Recommend Operating Conditions (2)
V
IN
------------------------------------------------------------------------------------- 2.5V to 5.5V
V
EN
------------------------------------------------------------------------------------ 0V to 5.5V
Operating Temperature Range ------------------------------------------------ -40°C to +85°C
Note (1): Stress beyond those listed under “Absolute Maximum Ratings” may damage the device.
Note (2): The device is not guaranteed to function outside the recommended operating conditions.
Electrical Characteristics
Conditions: V
IN
=V
OUT
+0.5V or 2.5V whichever is greater, V
EN
=V
IN
,C
IN
=C
OUT
=1uF,T
A
= -40°C to +85℃
,unless otherwise specified.
Symbol
Parameter
Input Voltage
Conditions
I
OUT
=1mA to 30mA,T
A
=+25℃,
I
OUT
=1mA to 30mA,
T
A
=-40℃ to +85℃
EUP7914
Min
Typ
Max.
2.5
-2
-3
150
160
300
90
100
30
0.02
7
0.3
70
55
45
30
100
0.4
1.5
-1
500
155
15
1
5.5
2
3
Unit
V
%
%
mA
mA
∆V
OUT
Output Voltage Accuracy
I
OUTMAX
Maximum Output Current
I
LIMIT
Current Limit
V
OUT
=V
OUT
(nom)
×
90%
V
OUT
≥
3V, I
OUT
=150mA
V
DROP
Dropout Voltage (3)
2.4
≤
V
OUT
≤
3V, I
OUT
=150mA
I
Q
Quiescent Current
No Load
V
LNR
Line Regulation
V
IN
=(V
OUT
+0.5V) to 5.5V, I
OUT
=10mA
V
LDR
Load Regulation
1mA
≤
I
OUT
≤
150mA
I
SHDN
Shutdown Supply Current V
EN
=0,T
A
=+25℃
V
IN
=(V
OUT
+1V) f=1kHz, I
LOAD
=10mA
Power Supply Ripple
V
IN
=(V
OUT
+1V) f=10kHz, I
LOAD
=10mA
PSRR
Rejection
V
IN
=(V
OUT
+1V) f=100kHz,
I
LOAD
=10mA
Output Noise Voltage
f=10Hz~100kHz, V
OUT
=1.5V,
No Load
(RMS)
Turn-on Time (4)
R
LOAD
=50Ω,T
A
=+25℃
V
ENL
VENL (EN logic low)
V
IN
=2.5V to 5.5V
V
ENH
VENH (EN logic high)
V
IN
=2.5V to 5.5V
VEN Input Bias Current
V
IN
=5.5V, V
EN
=0 or 5.5V
RDIS Output Discharge Switch V
EN
=0,V
IN
=3.6V
Thermal Shutdown
T
SD
Temperature
Thermal Shutdown
∆T
SD
Hysteresis
135
150
50
0.15
15
1.5
mV
µA
%/V
mV
µA
dB
µV
µs
V
V
µA
Ω
℃
℃
Note (3): Dropout is defined as V
IN
-V
OUT
when V
OUT
is 100mV below the value of V
OUT
for V
IN
=V
OUT
+0.5V
Note (4): Time needed for V
OUT
to reach 90% of final value.
DS7914
Ver1.0
Nov. 2008
4
EUP7914
Typical Characteristics (C
IN
=C
OUT
=1µF)
DS7914
Ver1.0
Nov. 2008
5
