EUP7915
150mA Low-Noise LDO in SOT23-5
DESCRIPTION
The EUP7915 is an efficient, CMOS 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 EUP7915 provides a very low noise output, ideal
for RF applications where a clean voltage source is
required. A noise bypass pin is also available for
further reduction of output noise.
Designed specifically for handheld and battery-
powered devices, the EUP7915 provides a
TTL-logic-compatible enable pin. When disabled,
power consumption drops nearly to zero.
The EUP7915 also works with low-ESR ceramic
capacitors, reducing the amount of board space
necessary for power applications, critical in handheld
wireless devices.
Available in the SOT23-5 package, the EUP7915
offers a wide range of output voltages. Key features
include current limit, thermal shutdown and faster
transient response.
FEATURES
5-pin SOT23-5 Package
2.5V to 5.5V Input Voltage Range
50µV(rms) Output Noise
140mV Dropout @ 150mA
75dB PSRR at 1kHz
Low 70µA Ground Current
150mA Output Current
Stability with 1µF Ceramic Output Capacitors
Excellent Load/Line Transient
Thermal Shutdown and Current Limit
Protection
Available in 1.2V,1.5V,1.8V,2.5V,2.8V,2.85V,
2.9V,3.0V,3.3V,4.8V and Adjustable Voltages
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Cellular Phones
Bluetooth Portable Radios and Accessories
PDA and Palmtop Computers
Consumer/Personal Electronics
Block Diagram
Figure 1. Fixed-Voltage
DS7915
Ver1.4
Apr. 2008
1
EUP7915
Ordering Information
Order Number
Package Type
Marking
Operating Temperature Range
EUP7915-12VIR1
EUP7915-15VIR1
EUP7915-18VIR1
EUP7915-25VIR1
EUP7915-28VIR1
EUP7915-285VIR1
EUP7915-29VIR1
EUP7915-30VIR1
EUP7915-33VIR1
EUP7915-48VIR1
EUP7915VIR1
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
ZT
□ □ □ □
ZC
□ □ □ □
ZD
□ □ □ □
ZB
□ □ □ □
ZE
□ □ □ □
ZF
□ □ □ □
ZW
□ □ □ □
ZG
□ □ □ □
ZH
□ □ □ □
ZK
□ □ □ □
ZA
□ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape & Reel
Operating temperature range
I: Industry Standard
Package Type
V: SOT-23
Output Voltage
12: 1.2V 15: 1.5V
18: 1.8V 25: 2.5V
28: 2.8V 285: 2.85V
29: 2.9V 30: 3.0V
33: 3.3V 48: 4.8V
Blank: Adjustable
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
EUP7915-
□□□ □ □ □ □
Absolute Maximum Ratings
V
IN
,V
EN
------------------------------------------------------------------------------- -0.3 to 6V
V
OUT
----------------------------------------------------------------- -0.3 to (V
IN
+0.3)
≤
6V
Junction Temperature ------------------------------------------------------------------- 150°C
Storage Temperature Range ------------------------------------------------- -65°C to +150°C
Lead Temperature ----------------------------------------------------------------------- 260°C
Maximum Power Dissipation ---------------------------------------------------------
0.3W
Thermal Resistance
θ
JA
-------------------------------------------------------------- 320°C/W
ESD Rating
Human Body Model ------------------------------------------------------------------- 2kV
Operating Ratings
V
IN
---------------------------------------------------------------------------------- 2.5 to 5.5V
V
EN
-------------------------------------------------------------------- 0 to (V
IN
+0.3)
≤
5.5V
Operating Temperature Range -------------------------------------------- -40°C to +125°C
DS7915
Ver1.4
Apr. 2008
4
EUP7915
Electrical Characteristics
Conditions: V
IN
=V
OUT
+0.2V if V
OUT
≧2.5V,
V
IN
=2.5V
if V
OUT
<2.5V
,V
EN
=V
IN
, C
IN
=1uF, C
OUT
=1uF,T
A
= -40~ 85℃
Unless otherwise specified. Typical values are at 25℃.
Symbol
Parameter
Input Voltage
Conditions
I
OUT
=1mA,T
A
=25℃
I
OUT
=1mA,T
A
=-40℃ to 85℃
T
A
>0, V
IN
=V
OUT
+ 0.2V for
V
OUT
> 3.3V or V
IN
=V
OUT
+0.5V
V
OUT
=V
OUT
(nom)
×
90%, T
A
>0℃
I
OUT
=150mA, V
OUT
<3.3V
I
OUT
=100mA, V
OUT
>3.3V
I
OUT
=1mA
V
IN
=(V
OUT
+0.2V) to 5.5V,
I
OUT
=1mA
1mA
≤
I
OUT
≤
100mA
(V
IN
=V
OUT
+ 0.2V)
1mA
≤
I
OUT
≤
150mA
(V
IN
=V
OUT
+ 0.5V)
V
EN
=0,T
A
=25℃
V
IN
=(V
OUT
+1V)DC+0.5V
P-P
f=1kHz,
I
LOAD
=10mA
EUP7915
Min
Typ
Max.
2.5
-2
-3
150
160
220
140
60
70
0.02
0.002
400
240
100
160
0.25
0.013
1
75
50
239
200
0.4
1.5
1
1
1.176
1.2
155
15
1.224
5.5
2
3
Unit
V
%
%
mA
mA
mV
µA
%/V
%/mA
µA
dB
µV
µV
µs
V
V
nA
nA
V
℃
℃
∆V
OUT
Output Voltage Accuracy
I
OUTMAX
Maximum Output Current
I
LIMIT
V
DROP
I
Q
V
LNR
V
LDR
I
SHDN
PSRR
Current Limit
Dropout Voltage (Note1)
Quiescent Current
Line Regulation
Load Regulation
Shutdown Supply Current
Power Supply Ripple
Rejection
Output Noise Voltage
f=10Hz~100kHz, I
LOAD
=10mA
(Bypass)
Output Noise Voltage (ADJ) f=10Hz~100kHz, I
LOAD
=10mA
Turn-on Time (Note2)
R
LOAD
=50Ω,T
A
=25℃
VENL (Maximum Low Level
V
IN
=2.5V to 5.5V
Input Voltage at EN)
VENH (Minimum high Level
V
IN
=2.5V to 5.5V
Input Voltage at EN)
VEN Input Bias Current
V
IN
=5.5V, V
EN
=0 or 5.5V
FB Input Bias Current (ADJ
V
IN
=5.5V, V
FB
=1.3V
Version)
FB Pin Voltage (ADJ
T
A
=25℃
Version)
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
V
ENL
V
ENH
V
FB
T
SD
∆T
SD
Note 1: The dropout voltage is defined as V
IN
-V
OUT
when V
OUT
is 100mV below the nominal value of V
OUT.
Note 2: Test time needed for V
OUT
to reach 90% of final value.
DS7915
Ver1.4
Apr. 2008
5
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