EZ1082
10.0A Positive
Voltage Regulator
POWER MANAGEMENT
Description
Features
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.
u Low dropout performance, 1.3V max.
u Full current rating over line and temperature
u Fast transient response
u ±2% total output regulation over line, load and
temperature
u Adjust pin current max 90µA over temperature
u Fixed/adjustable output voltage
u Line regulation typically 0.015%
u Load regulation typically 0.05%
u TO-220 3 pin package
Features include 1.3V 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.
Applications
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.
u High current microprocessor supplies
u Post regulators
u Microprocessor systems
u Medical equipment
u Embedded systems
u Post regulation for switching supplies
u Telecommunication systems
Typical Application Circuit
Fixed Voltage Regulator
U1
EZ1082-3.3
3
2
TAB
VIN > 4.75V
VOUT = 3.3V
IN
OUT
+
+
C1
10uF Tant.
C2
GND
1
10uF Tant. Min.
Adjustable Voltage Regulator
U1
EZ1082
OUT
3
2
TAB
VIN > 4.75V
VOUT = 3.45V
IN
+
+
C1
10uF Tant.
R1
C2
ADJ
1
133 Ohm, 1%
10uF Tant. Min
R2
232 Ohm, 1%
R2
R1
VOUT = VREF • 1+
+ IADJ • R2
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
1
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Revision 1, December 2000
