EZ1117/EZ1117A
0.8 & 1.0 AMP Positive
Voltage Regulators
POWER MANAGEMENT
Deessccrriippttiioonn
Featturreess
The EZ1117 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at full rated current.
ꢀ Low dropout performance,
1.2V max. for EZ1117
1.3V max. for EZ1117A
ꢀ 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 0.2% max.
ꢀ Load regulation 0.4% max.
ꢀ SOT-223 and TO-263 packages
Additionally, the EZ1117 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. The EZ1117 series of three terminal regulators
offer fixed and adjustable voltage options available in
the space saving SOT-223 and TO-263 packages.
Appplliiccaattiioonnss
Typiccaall AApppplliiccaattiioonn CCiirrccuuiittss
ꢀ Active SCSI termination
ꢀ Low voltage microcontrollers
ꢀ Switching power supply post-regulator
Adjustable Voltage Regulator(1)(2)
3.45V
VOUT
2/TAB
VOUT
= Ξ 4.75V
≥
3
R1
133
1%
EZ1117
1
V
REF
+
C2
Orderriinngg IInnffoorrmmaattiioonn
+
R2
232
1%
C1
10μF
I
ADJ
Device(1,2)
Package
VOUT Volts
10μF
TANT
EZ1117CST-X.X
EZ1117ACST-X.X
SOT-223
See Note (1)
VOUT = VREF 1 + R2 + IADJR2
(
)
R1
EZ1117CM-X.X
EZ1117ACM-X.X
(1) C1 Needed if device is far from filter capacitors
(2) C2 Required for Stability
TO-263
See Note (1)
Notes:
Fixed Voltage Regulator(1)(2)
(1) Where X.X denotes voltage options. Available voltages are:
2.5V, 2.85V and 3.3V. Leave blank for adjustable version (1.3 to
5.7V). Contact factory for additional voltage options.
(2) Add suffix ‘TR’ for tape and reel.
3.3V
VOU
2/TAB
≥
= η∂ 4.75V
VOUT
3
EZ1117-3.3
1
+
+
C2
10μF
TANT
C1
10μF
I
Q
(1) C1 Needed if device is far from filter capacitors
(2) C2 Required for Stability
Active SCSI Bus Terminator
OUT
IN
EZ1117
GND
+
10μF
+
22μF
18 to 27
Lines
May 23, 2006
1
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