EZ1083_05 Datasheet, PDF (1/5 Pages) Semtech Corporation – 7.5A Positive Voltage Regulator

POWER MANAGEMENT
Description
The EZ1083 is a high performance positive voltage
regulator designed for use in applications requiring low
dropout performance at 7.5A. Additionally, the EZ1083
series provides excellent regulation over variations in line,
load and temperature.
Features include 1.4V dropout at 7.5 amps, fast
transient response, internal current limiting and thermal
shutdown protection of the output device. The EZ1083
has both fixed and adjustable voltage options. These
devices are available in the popular TO-220 package.
EZ1083
7.5A Positive
Voltage Regulator
Features
‹ Low dropout performance: 1.4V max. for EZ1083
‹ Full current rating over line and temperature
‹ Fast transient response
‹ Adjust pin current max 90µA over temperature
‹ Fixed/adjustable output voltage (EZ1083)
‹ Line regulation typically 0.015%
‹ Load regulation typically 0.05%
‹ ±2% total output regulation over line, load
and temperature
‹ TO-220 package. Available in WEEE and RoHS
compliant package
The EZ1083 is used in industrial systems to provide power
to microprocessors and chipsets. It is also used to power
ASICs in control systems for medical applications.
Applications
‹ PC Motherboards
‹ Microcontroller systems
‹ Medical equipment
‹ Low power microprocessor systems
‹ Post regulation for switching power supplies
‹ Telecommunication systems
Typical Application Circuit
Fixed Voltage Regulator
VIN > 4.75V
U1
3 _IN
+ _C1
10uF Tant.
EZ1083-3.3
TAB _OUT 2
GND
1
Adjustable Voltage Regulator
VIN > 4.75V
U1
3
IN
EZ1083
TAB
2
OUT
+ _C1
10uF Tant.
ADJ
1
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
Revision: December 21, 2005
1
VOUT = 3.3V
+ _C2
10uF Tant. Min.
VOUT = 3.45V
R1
133 Ohm, 1%
+ C2
10uF Tant. Min
R2
232 Ohm, 1%
V_OUT
= V_REF
•
1 +

R2
R1


+
I _ADJ
• R2
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