EZ1082_07 Datasheet, PDF (1/5 Pages) Semtech Corporation – 10.0A Positive Voltage Regulator

POWER MANAGEMENT
Description
The EZ1082 is a high performance positive voltage
regulator designed for use in applications requiring low
dropout performance at 10A. Additionally, the EZ1082
provides excellent regulation over variations in line, load
and temperature.
Features include 1.4V dropout at 10A, fast transient
response, internal current limiting and thermal shutdown
protection of the output device. The EZ1082 series are
three terminal regulators with fixed and adjustable
voltage options available in the popular TO-220
package.
EZ1082
10.0A Positive
Voltage Regulator
Features
‹ Low dropout performance, 1.4V max.
‹ Full current rating over line and temperature
‹ Fast transient response
‹ ±2% total output regulation over line, load and
temperature
‹ Adjust pin current max 90µA over temperature
‹ Fixed/adjustable output voltage
‹ Line regulation typically 0.015%
‹ Load regulation typically 0.05%
‹ TO-220 3 pin package. Available in Pb-free
plating, RoHS compliant
The EZ1082 is an excellent choice for powering
microprocessor systems. Using an LDO eliminates
MOSFETs and inductors saving both space and cost. An
LDO also provides better transient response with no ripple
to the load.
Applications
‹ High current microprocessor supplies
‹ Post regulators
‹ Microprocessor systems
‹ Medical equipment
‹ Embedded systems
‹ Post regulation for switching supplies
‹ Telecommunication systems
Typical Application Circuit
Fixed Voltage Regulator
VIN > 4.75V
U1
3 _IN
+ _C1
10uF Tant.
EZ1082-3.3
TAB _OUT 2
GND
1
VOUT = 3.3V
+ _C2
10uF Tant. Min.
Adjustable Voltage Regulator
VIN > 4.75V
U1
3
IN
EZ1082
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
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
Revision: August 1, 2007
1
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