EUP7965
150mA Low-Noise Low-Dropout
Linear Regulator
DESCRIPTION
The EUP7965 is designed for portable and wireless
applications with demanding performance and space
requirements.
The EUP7965 is stable with a small 1µF ±30% ceramic
output capacitor. The EUP7965’s performance is
optimized for battery powered systems to deliver low
noise, low dropout voltage, low quiescent current and
excellent line and load transient response.
An optional external bypass capacitor reduces the
output noise further without slowing down the load
transient response. Power supply rejection is better
than 65dB at low frequencies. High power supply
rejection is maintained down to low input voltage
levels common to battery operated circuits. Other
features include a logic-controlled shutdown mode,
short-circuit and thermal-shutdown protection. The
EUP7965 is available in a SOT23-5,SOT23-6 package.
FEATURES
2.5 to 5.5V Input Range
150mA Guaranteed Output
70dB PSRR at 1kHz @ V
IN
=V
OUT
+1V
50µVrms Output Noise (typ) over 10Hz to
100kHz
100mV Maximum Dropout with 150mA Load
Low 85µA No-load Supply Current
≤
1.5µA Shutdown Current
Fast Start-up time.
Stable with 1µF Ceramic Capacitors
Thermal Shutdown and Short-circuit Protection
Preset Output Voltage 1.5V, 1.8V, 2.5V, 2.8V,
2.85V, 3.0V ,3.3V, 4.8V ,5.0V and adjustable
SOT23-5,SOT23-6 package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Cellular and Cordless Handsets
Bluetooth, Wireless LAN
PDAs and Palmtop Computers
Portable Information Appliances
Block Diagram
Figure 1.
DS7965 Ver1.5 March. 2006
1
EUP7965
Pin Configurations
Part Number
Pin Configurations
EUP7965
SOT23-5
EUP7965
SOT23-6
Pin Description
PIN
V
IN
GND
V
EN
BYPASS
SET
V
OUT
5
SOT23-5
1
2
3
4
SOT23-6
1
2
3
4
5
6
Input voltage of the LDO
Common ground
Enable input logic, enable high
Optional bypass capacitor for noise reduction
Output voltage set. Not externally connected for the fixed versions.
Connect to resistor-divider for adjustable output voltage.
Output voltage of the LDO
DESCRIPTION
DS7965 Ver1.5 March. 2006
3
EUP7965
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 ------------------------------------------------------ -65°C to +150°C
Lead Temp ------------------------------------------------------------------------------
235°C
Pad Temp -------------------------------------------------------------------------------
235°C
Maximum Power Dissipation SOT23-5 --------------------------------------------- 364mW
Thermal Resistance
θ
JA
(SOT23-5) --------------------------------------------------- 220°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
Junction Temperature ------------------------------------------------------ -40°C to +125°C
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for V
IN
= V
OUT(nom)
+0.5V, C
IN
=1µF, I
OUT
=1mA, C
OUT
=1µF,
C
BYPASS
=0.01µF. Typical values and limits appearing in standard typeface are for T
J
= 25°C.
Symbol
Parameter
Output Voltage Tolerance
Conditions
I
OUT
= 1mA
V
IN
= (V
OUT(nom)
+0.5V) to 5.5V,
For 4.8 to 5.0 options
For all other options
I
OUT
= 1mA to 150mA
V
IN
=V
OUT(nom)
+1V, f = 1kHz,
I
OUT
=50mA
*6
V
EN
=1.4V, I
OUT
= 0mA
For 4.8 to 5.0 options
For all other options
V
EN
= 1.4V, I
OUT
= 0 to 150mA
For 4.8 to 5.0 options
For all other options
V
EN
= 0.4V
I
OUT
= 1mA
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 150mA
EUP7965
Min
Typ
Max.
-2
-0.19
-0.1
0.0025
70
100
85
155
140
0.06
0.5
25
50
75
165
150
250
200
1.5
2
35
70
100
2
0.19
0.1
0.005
Unit
% of
V
OUT(nom)
%/V
%mA
dB
ΔV
OUT
Line Regulation Error
Load Regulation Error
PSRR
Power Supply Rejection
Ratio
I
Q
Quiescent Current
µA
Dropout Voltage
mV
DS7965 Ver1.5 March. 2006
5
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