EZ1086C_16 Datasheet, PDF (1/6 Pages) Semtech Corporation – 1.5 Amp Positive Voltage Regulator

EZ1086C & EZ1086I
1.5 Amp Positive Voltage Regulator
POWER MANAGEMENT
Description
The EZ1086 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at up to 1.5A. Additionally, the
EZ1086 series provides excellent regulation over
variations in line, load and temperature.
Outstanding features include low dropout performance
at rated current, fast transient response, internal
current limiting and thermal shutdown protection of the
output device.
A variety of options are available for maximum flexibility:
the EZ1086C has both fixed and adjustable voltage
options and is designed for use in commercial applica-
tions; the EZ1086I is adjustable only for industrial appli-
cations.
All devices are available in the popular TO-220 and
TO-263 packages.
Features
‹ Low dropout voltage: 1.3V max. for EZ1086C,
1.4V max. for EZ1086I
‹ 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 (EZ1086C)
‹ Line regulation typically 0.015%
‹ Load regulation typically 0.05%
‹ Industrial temperature range (EZ1086I)
‹ TO-220 and TO-263 packages. Available in RoHS
compliant package
Applications
‹ Post regulators
‹ Battery chargers
Typical Application Circuit
Fixed Voltage Regulator
VIN > 4.75V
U1
3 _IN
+ _C1
10uF Tant.
EZ1086C-3.3
TAB _OUT 2
GND
1
Adjustable Voltage Regulator
VIN > 4.75V
U1
3
IN
EZ1086
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 = 3.3V
+ _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
Revision: January 25, 2006
1
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