EUTECH EUP7968

EUP7968
300mA Low Dropout Linear Regulator
FEATURE
DESCRIPTION
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The EUP7968 is a 300mA fixed output voltage low
dropout linear regulator operating from 2.5V to 5.5V
input. Typical ground current is approximately 90µA.
Built-in output current-limiting and thermal-limiting
provide maximal protection against any fault
conditions.
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The EUP7968 is available in 1.2V,1.5V,1.8V,2.5V,
2.8V,3V,3.3V and 3.5V versions.
Very Low Dropout Voltage of 170mV at Output
Current 300mA
Guaranteed 300mA Output Current
Low Ground Current at 90µA
Stable with low ESR Ceramic Capacitors
Fast Transient Response
Current-limiting and Thermal Protection
SOT23-3 and SOT89 Package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
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Block Diagram
Figure 1.
DS7968 Ver1.3
Sep. 2007
1
Voltage Regulator for LAN Card, CD-ROM, and
DVD
Wireless Communication Systems
Battery Powered Systems
EUP7968
Typical Application Circuit
Figure2. Fixed-Voltage LDO Regulator
Figure 2.
Pin Configurations
Package Type
Pin
Configurations
SOT23-3
(A)
(B)
SOT89-3
Pin Description
PIN
SOT23-3
SOT89-3(A)
SOT89-3(B)
VIN
3
3
2
Input voltage of the LDO
GND
1
2
1
Common Ground
VOUT
2
1
3
Output voltage of the LDO
DS7968 Ver1.3
Sep. 2007
2
DESCRIPTION
EUP7968
Ordering Information
Order Number
Package Type
Marking
Operating Temperature range
EUP7968-12VIR1
SOT23-3
IT □ □ □ □
-40°C to 85°C
EUP7968-15VIR1
SOT23-3
I0 □ □ □ □
-40°C to 85°C
EUP7968-18VIR1
SOT23-3
I1 □ □ □ □
-40°C to 85°C
EUP7968-25VIR1
SOT23-3
I2 □ □ □ □
-40°C to 85°C
EUP7968-28VIR1
SOT23-3
I6 □ □ □ □
-40°C to 85°C
EUP7968-30VIR1
SOT23-3
I5 □ □ □ □
-40°C to 85°C
EUP7968-33VIR1
SOT23-3
I3 □ □ □ □
-40°C to 85°C
EUP7968-35VIR1
SOT23-3
IR □ □ □ □
-40°C to 85°C
EUP7968-15CAIR1
SOT89-3
EUP7968-18CAIR1
SOT89-3
EUP7968-25CAIR1
SOT89-3
EUP7968-28CAIR1
SOT89-3
EUP7968-30CAIR1
SOT89-3
EUP7968-33CAIR1
SOT89-3
EUP7968-35CAIR1
SOT89-3
EUP7968-15CBIR1
SOT89-3
EUP7968-18CBIR1
SOT89-3
EUP7968-25CBIR1
SOT89-3
EUP7968-28CBIR1
SOT89-3
EUP7968-30CBIR1
SOT89-3
EUP7968-33CBIR1
SOT89-3
EUP7968-35CBIR1
SOT89-3
xxxxx
68CA
xxxxx
68DA
xxxxx
68BA
xxxxx
68EA
xxxxx
68GA
xxxxx
68HA
xxxxx
68RA
xxxxx
68CB
xxxxx
68DB
xxxxx
68BB
xxxxx
68EB
xxxxx
68GB
xxxxx
68HB
xxxxx
68RB
-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
-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
EUP7968 □ □ □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape & Reel
Operating temperature range
I: Industry Standard C: Commercial
Package Type
V: SOT23 CA: SOT89-3 (A) CB: SOT89-3 (B)
Output Voltage
12: 1.2V 25:2.5V
15: 1.5V 28: 2.8V
18: 1.8V 30: 3.0V
DS7968 Ver1.3
Sep. 2007
3
33:3.3V
35:3.5V
EUP7968
Absolute Maximum Ratings
„
Input Voltage ------------------------------------------------------------------------------
-0.3V to 6V
„
Operating Junction Temperature Range ----------------------------------------------Storage Temperature Range ------------------------------------------------------------Power Dissipation ,PD @ TA=25°C
SOT-23 --------------------------------------------------------------------------------------SOT-89 --------------------------------------------------------------------------------------Package Thermal Resistance
SOT-23,θJA --------------------------------------------------------------------------------SOT-89,θJA ---------------------------------------------------------------------------------
-40°C to 125°C
-65°C to 150°C
„
„
„
0.15W
0.5W
250°C/W
300°C/W
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for VIN= VO +0.5V, CIN=COUT=2.2µF, TA =25°C.
Symbol
Parameter
VIN
Input Voltage
∆ VO
Output Voltage Tolerance
IO
Maximum Output Current
ILIMIT
Conditions
100µA ≤ IOUT ≤ 300mA
VIN=VO+0.5V,
Continuous
EUP7968
Min
Typ
Max.
2.5
5.5
-3
+3
300
Output Current Limit
TA = -40°C to 85°C
IQ
Supply Current
IOUT=0mA
90
VDO
Dropout Voltage
IOUT =300mA
IOUT = 1mA, (VO +0.5V) ≤ VI
≤ 5.5V
1mA ≤ IOUT ≤ 300mA
170
∆ VO
Line Regulation
Load Regulation
TSD
350
720
mA
200
µA
mV
%/V
15
35
mV
Thermal Shutdown Hysteresis
20
4
VOUT(NOM)
mA
0.2
160
Sep. 2007
V
% of
0.05
Thermal Shutdown Temperature
DS7968 Ver1.3
Unit
°C
EUP7968
Typical Operating Characteristics
Output Voltage vs. Input voltage
o
Output Voltage vs. Temperature( C)
3.06
Output Voltage (V)
Output Voltage VOUT(V)
3.020
3.015
ILOAD=1mA
3.010
3.04
o
25 C
3.02
3.00
o
o
-40 C
125 C
2.98
3.005
2.96
3.000
-60 -40 -20
0
20
40
60
2.94
3.5
80 100 120 140
4.0
o
Quiescent Current vs. Temperature
Dropout Voltage (mV)
Quiescent Current (uA)
110
100
90
80
70
60
0
20
40
60
80 100 120 140
Temperature ( C)
Sep. 2007
240
220
200
180
160
140
120
100
80
60
40
20
0
-20
5.5
6.0
o
125 C
o
-40 C
50
100
150
200
Output Current (mA)
5
o
25 C
0
o
DS7968 Ver1.3
5.0
Dropout Voltage vs. Output Current
120
50
-60 -40 -20
4.5
Input Voltage (V)
Temperature( C)
250
300
EUP7968
DS7968 Ver1.3
Sep. 2007
6
EUP7968
Application Information
External Capacitors
Like any low-dropout regulator, the EUP7968 requires
external capacitors for regulator stability. The EUP7968
is specifically designed for portable applications
requiring minimum board space and smallest components.
These capacitors must be correctly selected for good
performance.
Input Capacitor
A minimum input capacitance of 1µF is required between
the EUP7968 input pin and ground (the amount of the
capacitance may be increased without limit).This
capacitor must be located a distance of not more than
1cm from the input pin and returned to a clean analog
ground.
Any good quality ceramic, tantalum, or film capacitor
may be used at the input. If a tantalum capacitor is used
at the input, it must be guaranteed by the manufacturer to
have a surge current rating sufficient for the application.
Output Capacitance
The EUP7968 is specifically designed to employ ceramic
output capacitors as low as 2.2µF. Ceramic capacitors
below 10µF offer significant cost and space savings,
along with high frequency noise filtering. Higher values
and other types and of capacitor may be used, but their
equivalent series resistance (ESR) should be maintained
below 0.5Ω. Ceramic capacitor of the value required by
the EUP7968 are available in the following dielectric
types: Z5U, Y5V, X5R, and X7R. The Z5U and Y5V
types exhibit a 50% or more drop in capacitance value as
their temperature increase from 25°C, an important
consideration. The X5R generally maintain their
capacitance value within ± 20%. The X7R type are
desirable for their tighter tolerance of 10% over
temperature.
DS7968 Ver1.3
Sep. 2007
7
EUP7968
Packaging Information
SOT23-3
SYMBOLS
INCHES
MIN.
MAX.
MIN.
MAX.
A
-
1.30
-
0.052
A1
0.00
0.15
0.000
0.006
D
2.90
0.114
E1
1.60
0.063
E
2.60
3.00
0.102
0.118
L
0.30
0.60
0.012
0.024
b
0.30
0.50
0.012
0.020
e
DS7968 Ver1.3
MILLIMETERS
Sep. 2007
0.95
0.037
8
EUP7968
SOT89-3
MILLIMETERS
MIN.
MAX.
INCHES
MIN.
MAX.
A
1.40
1.60
0.055
0.063
L
0.89
1.20
0.035
0.047
B1
0.36
0.48
0.014
0.019
B
0.44
0.56
0.017
0.022
C
0.35
0.44
0.014
0.017
D
4.40
4.60
0.173
0.181
D1
1.35
1.83
0.053
0.072
H
3.94
4.25
0.155
0.167
E
2.29
2.60
0.090
0.102
SYMBOLS
e
DS7968 Ver1.3
Sep. 2007
1.50
0.059
9