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EUP7963
Service Manual
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EUTECH EUP7963 Service Manual

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EUP7963
3A Ultra Low-Dropout Linear Regulator
DESCRIPTION
The EUP7963 operates from an input of 2.5V to 5.5V. This regulator uses small, 4.7µF ceramic input capacitors and 10µF ceramic output capacitors to deliver 3A output current. High bandwidth provides excellent transient response. It is designed to drive digital circuits requiring low voltage at high currents (i.e., PLDs, DSPs, microcontrollers, etc.).
Other features include thermal and current limit protection, a logic-control shutdown mode and an error flag output that goes low when the output voltage drops 10% below nominal value.
It is available in fixed output voltages of 1.5V, 1.8V,
2.5V, 3.3V and as an adjustable device with a 0.8V reference voltage. The adjustable output voltage can be set from 0.8V to 4.5V.
T ypical Application Circuit
FEATURES
z 3A Guaranteed Output Current z 750mV Dropout Voltage at 3A Output z Stable with Ceramic Capacitors z ±1.8% Output Voltage Accuracy z 1mA Low-Ground Pin Current
0.1µA Quiescent Current in Shutdown Mode
z Excellent Line and Load Regulation z Thermal Shutdown and Current Limit Protection z Error Flag Indication z Available in To-263, and To-220 Packages z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z LDO Linear Regulator for Low-Voltage Digital IC z PC Add-In Cards z High Efficiency Linear Power Supplies z Post Regulator
Figure1.
DS7963 Ver 1.4 Oct. 2007
1
EUP7963
Block Diagram
Figure2.
Pin Configurations
Package Type Pin Configurations
TO220-3 TO220-5
TO263-3 TO263-5
Pin Description
PIN
V
EN
VIN 2 1 Input Voltage of the LDO
TO220-5 TO263-5
1 Enable Input. Logic high=enable, Logic low=shutdown
TO220-3 TO263-3
DESCRIPTION
GND 3 2 Ground: TAB is connected to ground
V
4 3 Output voltage of the LDO
OUT
ERROR
ADJ
DS7963 Ver 1.4 Oct. 2007
5
Adjustable Regulator Feedback Input. Connect to resistor voltage divider
Flag Output. Active-low indicated an output fault condition
ERROR
2
EUP7963
Ordering Information
Order Number Package Type Marking Operating Temperature range
EUP7963-15KAIR1 TO220-3
EUP7963-18KAIR1 TO220-3
EUP7963-25KAIR1 TO220-3
EUP7963-33KAIR1 TO220-3
EUP7963-15KBIR1 TO220-5
EUP7963-18KBIR1 TO220-5
EUP7963-25KBIR1 TO220-5
EUP7963-33KBIR1 TO220-5
EUP7963KBIR1 TO220-5
EUP7963-15LAIR1 TO263-3
EUP7963-18LAIR1 TO263-3
EUP7963-25LAIR1 TO263-3
EUP7963-33LAIR1 TO263-3
EUP7963-15LBIR1 TO263-5
EUP7963-18LBIR1 TO263-5
EUP7963-25LBIR1 TO263-5
EUP7963-33LBIR1 TO263-5
EUP7963LBIR1 TO263-5
xxxxx
P7963C
xxxxx
P7963D
xxxxx
P7963B
xxxxx
P7963H
xxxxx
P7963C
xxxxx
P7963D
xxxxx
P7963B
xxxxx
P7963H
xxxxx
P7963A
xxxxx
EUP7963C
xxxxx
EUP7963D
xxxxx
EUP7963B
xxxxx
EUP7963H
xxxxx
EUP7963C
xxxxx
EUP7963D
xxxxx
EUP7963B
xxxxx
EUP7963H
xxxxx
EUP7963A
-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
-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
EUP7963-
□ □ □ □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape & Reel
Operating temperature range I: Industry Standard
Package Type: KA: TO220-3 KB: TO220-5 LA: TO263-3 LB: TO263-5
Output Voltage
15: 1.5V 18: 1.8V 25: 2.5V
33: 3.3V
Blank: Adjustable
DS7963 Ver 1.4 Oct. 2007
3
EUP7963
∆
Absolute Maximum Ratings
Supply Voltage V Package Thermal Resistance
TO-263, θ TO-220, θ
Power Dissipation, PD@TA=25°C
---------------------------------------------------------------------- 5.5V
IN
------------------------------------------------------------------------- 45%/W
JA
------------------------------------------------------------------------- 55%/W
JA
TO-263 ------------------------------------------------------------------------------ 2.2W TO-220 ------------------------------------------------------------------------------ 1.8W
Junction Temperature ------------------------------------------------------------------- 150°C Storage Temperature ------------------------------------------------------ -65°C to +150°C Lead Temp ------------------------------------------------------------------------------ 260°C ESD Rating
Human Body Model ----------------------------------------------------------------------
2kV
Operating Ratings
Supply Voltage V Enable Input Voltage Junction Temperature ------------------------------------------------------ -40°C to +125°C
---------------------------------------------------------------- 2.5 to 5.5V
IN
-------------------------------------------------------------- 0V to 5.5V
Electrical Characteristics
Limits in standard typeface are for TJ =25°C. Unless otherwise specified: VIN= V
OUT(nom)
Symbol Parameter Conditions
V
+1V ≤ V
OUT
10mA ≤ I
OUT
L
+1V ≤ V
L
IL = 300mA 50
I
= 3A 750
L
IL = 0A 1.0 1.5
= 3A 1.4 2.1
I
L
VEN ≤0.3V 0.01 10
O(NOM)
ΔV
V
IN -VOUT
I
GND
I
O(PK)
Output Voltage Tolerance
OUT
Line Regulation V
Load Regulation 10mA ≤ I
Dropout Voltage
Ground Pin Current in Normal Operation Mode
Ground Pin Current in Shutdown Mode
Peak Output Current VO ≥ V
Short Circuit Protection
ISC Short Circuit Current 4.6 A
≤ 5.5V
IN
≤ 3A
≤ 5.5V
IN
≤ 3A 0.15 0.3
-4% 4.3 A
+1V, IL=10mA, C
OUT
EUP7963
Min Typ Max.
-1.8 1.8 %
0.1 0.3 %/∆V
=10µF
Unit
%/
mV
mA
µA
A
DS7963 Ver 1.4 Oct. 2007
4
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