EZ1117_06 Datasheet, PDF (1/6 Pages) Semtech Corporation – 0.8 & 1.0 AMP Positive Voltage Regulators

POWER MANAGEMENT
Description
Features
EZ1117/EZ1117A
0.8 & 1.0 AMP Positive
Voltage Regulators
The EZ1117 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at full rated current.
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.
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
Typical Application Circuits
VOUT = ≥Ξ 4.75V
Adjustable Voltage Regulator⁽¹⁾⁽²⁾
3 _EZ1117
1
+
C1
10μF
I _ADJ
2/TAB
R1
V_REF 133
1%
R2
232
1%
3.45V
VOUT
+
C2
10μF
TANT
( ) VOUT = VREF 1 + R2 + IADJR2
R1
(1) C1 Needed if device is far from filter capacitors
(2) C2 Required for Stability
VOUT = η≥∂ 4.75V
Fixed Voltage Regulator⁽¹⁾⁽²⁾
2/TAB
3.3V
3 _EZ1117-3.3
VOU
Applications
Active SCSI termination
Low voltage microcontrollers
Switching power supply post-regulator
Ordering Information
Device^(1,2)
EZ1117CST-X.X
EZ1117ACST-X.X
EZ1117CM-X.X
EZ1117ACM-X.X
Package
SOT-223
TO-263
V_OUT Volts
See Note (1)
See Note (1)
Notes:
(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.
1
+
C1
10μF
I_Q
+
C2
10μF
TANT
(1) C1 Needed if device is far from filter capacitors
(2) C2 Required for Stability
Active SCSI Bus Terminator
OUT
IN _EZ1117
+
10μF
GND
+
22μF
18 to 27
Lines
May 23, 2006
1
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