1 www.semtech.com
EZ1117
0.8 & 1.0 Amp Positive
Voltage Regulators
POWER MANAGEMENT
Revision: November 5, 2004
The EZ1117 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at up to 0.8A.
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.
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
Low voltage microcontrollers
Switching power supply post-regulation
Description Features
Applications
Fixed Voltage Regulator
Adjustable Voltage Regulator
Typical Application Circuit
VIN > 4.75V VOUT = 3.45V
VOUT = 2.5V
VIN > 4.75V
U1 EZ1117
1
23
ADJ
OUTIN TAB
+
C2
10uF Tant. Min.
R1
133 Ohm, 1%
+
C1
10uF Tant.
U1 EZ1117-2.5
1
23
GND
OUTIN TAB
R2
232 Ohm, 1%
+
C1
10uF Tant.
+
C2
10uF Tant. Min
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
2RI
1R
2R
1VV ADJREFOUT •+
+•=
22004 Semtech Corp. www.semtech.com
EZ1117
POWER MANAGEMENT
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Unless otherwise specified: Adj. Option: VIN = 2.65V to 7.0V and IO = 10mA to IRATED. Fixed Options: IO = 0mA to IRATED, VIN (2.5V) = 3.9V to 7.0V.
Absolute Maximum Ratings
Electrical Characteristics(6)
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device
reliability.
32004 Semtech Corp. www.semtech.com
EZ1117
POWER MANAGEMENT
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NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) ∆VOUT, ∆VREF = 1%.
(3) Bandwidth of 10 Hz to 10kHz.
(4) 120Hz input ripple (CADJ for ADJ = 25µF).
(5) O.T. = over specified operating junction temperature range.
(6) IRATED = 800mA.
Electrical Characteristics (Cont.)(6)
Unless otherwise specified: Adj. Option: VIN = 2.65V to 7.0V and IO = 10mA to IRATED. Fixed Options: IO = 0mA to IRATED, VIN (2.5V) = 3.9V to 7.0V.
42004 Semtech Corp. www.semtech.com
EZ1117
POWER MANAGEMENT
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Notes:
(1) Where X.X (XX) denotes voltage options. Available
voltage is: 2.5V (25). Leave blank for adjustable version
(1.3 to 5.7V). Contact factory for additional voltage op-
tions.
(2) Where X.X (XX) denotes voltage options. Available
voltages are: 2.5V (25), 2.85(285), and 3.3V(33). Leave
blank for adjustable version (1.3 to 5.7V). Contact fac-
tory for additional voltage options.
(3) Only available in tape and reel packaging. A reel
contains 2500 (SOT-223) or 800 (TO-263) devices.
(4) Lead free product. This product is fully WEEE and
RoHS compliant.
Pin Configuration Ordering Information
SOT-223 TO-263
Block Diagram
52004 Semtech Corp. www.semtech.com
EZ1117
POWER MANAGEMENT
Outline Drawing - TO-263
Land Pattern - TO-263
62004 Semtech Corp. www.semtech.com
EZ1117
POWER MANAGEMENT
Outline Drawing - SOT-223
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA. 93012
Phone: (805)498-2111 FAX (805)498-3804
Contact Information
Land Pattern - SOT-223