EZ1585C & EZ1585I
4.6 Amp Positive
Voltage Regulator
POWER MANAGEMENT
Description
Features
The EZ1585 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at up to 4.6A. Additionally, the
EZ1585 series provides excellent regulation over
variations in line, load and temperature.
u Low dropout voltage: 1.3V max. for EZ1585C and
1.4V max. for EZ1585I
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 (EZ1585C)
u Line regulation typically 0.015%
u Load regulation typically 0.05%
Outstanding features include low dropout performance
at rated current, fast transient response, internal
current limiting and thermal shutdown protection of the
output device.
u Industrial temperature range (EZ1585I)
u TO-220 and TO-263 packages
A variety of options are available for maximum flexibility:
the EZ1585C is intended for commercial applications and
has both fixed and adjustable voltage options; the
EZ1585I is intended for industrial applications and is
adjustable only.
Applications
u Printer and plotter supplies
u Instrumentation
u Medical equipment
u Microcontroller systems
u Telecommunication systems
u Motherboards
All devices are available in the popular TO-220 and
TO-263 packages.
u Switching supply post regulation
Typical Application Circuit
Fixed Voltage Regulator
U1
EZ1585C-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
EZ1585
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
Revision 1, January 2001
1
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