Sipex Corporation SPX1129N-2.5, SPX1129N-3.3, SPX1129N-5.0, SPX1129R-2.5, SPX1129R-3.3 Datasheet
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SPX1129
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500mA Low Dropout Voltage Regulator |
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(PRELIMINARY INFORMATION) |
FEATURES |
APPLICATIONS |
• 1% Output Accuracy 2.5V, 3.3V, 5V, @ 500mA Output |
• Battery Powered Systems |
• Very Low Quiescent Current |
• Cordless Telephones |
• 0.4V Dropout Voltage |
• Radio Control Systems |
• Extremely Tight Load and Line Regulation |
• Portable/Palm Top/Notebook Computers |
• Current & Thermal Limiting |
• Portable Consumer Equipment |
• Logic-Controlled Electronic Shutdown |
• Portable Instrumentation |
• Reverse Battery Protection |
• Bar Code Scanners |
• Output Programmable From 1.24 To 20V |
• SMPS Post-Regulator |
• Equivalent Replacement For LT1129 |
• Voltage Reference |
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• Automotive Electronics |
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PRODUCT DESCRIPTION
The SPX1129 is a low power voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX1129 features very low quiescent current and very low dropout voltage of 0.4 volts. This includes a tight initial tolerance of ± 1% max, and very low output temperature coefficient, making the SPX1129 useful as a low-power voltage reference.
The error flag output feature is used as power-on reset for warning of a low output voltage, due to falling voltage input of batteries. The SPX1129 is offered TO-92, SOT-223, TO-220, TO-252 and TO-263 in 3 & 5 leads.
SOT-223 (M3) |
TO-263-3 (T) |
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SPX1129 |
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SPX1129 |
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3 |
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2 |
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3 |
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VIN |
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GND |
VOUT |
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Top View
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VOUT |
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SHDN |
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<0.25V |
OFF |
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>2.8V |
ON |
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NC |
ON |
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VOUT GND VIN
Top View
PIN CONNECTIONS
TO-263-5 (T) |
TO-220-3 (U) |
SPX1129 |
1) OUTPUT |
2) SENSE/ ADJ |
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3) GND |
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2 |
3 |
4 |
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5 |
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4) |
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SHDN |
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4) VIN |
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Top View
SPX1129 |
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1 |
2 |
3 |
VOUT GND VIN |
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Front View
TO-252 (R) |
TO-92 (N) |
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1 |
2 |
3 |
SPX1129 |
3 |
VIN |
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2 |
GND |
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1 |
VOUT |
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V |
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VIN |
GND |
OUT |
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Front View |
Bottom View |
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Rev. 10/25/00
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SPX1129 |
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ABSOLUTE MAXIMUM RATINGS |
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Power Dissipation……………………...… Internally Limited |
Maximum Input Supply Voltage....................................... +20V |
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Lead Temp. (Soldering, 5 Seconds)…………….……. 260°C |
Shutdown Input Voltage ...................................... -0.6V to 6.5V |
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Storage Temperature Range……………… -65°C to + 150°C |
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Operating Junction Temperature Range
SPX1129……………………………..… -40°C to + 125°C
ELECTRICAL CHARACTERISTICS at VS = ±15V, TA = 25°C, unless otherwise specified. Boldface applies over the full operating temperature range.
PARAMETER |
CONDITIONS |
Typ. |
SPX1129 |
UNITS |
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(Note 2) |
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Min |
Max |
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2.5V Version |
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Output Voltage |
1mA ≤IL ≤ 500mA |
2.5 |
2.475 |
2.525 |
V |
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2.5 |
2.450 |
2.550 |
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Reverse Output Current |
VOUT = 2.5V, VIN = 0V |
16 |
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25 |
A |
3.3V Version |
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Output Voltage |
1mA ≤IL ≤ 500mA |
3.3 |
3.267 |
3.333 |
V |
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3.3 |
3.217 |
3.382 |
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Reverse Output Current |
VOUT = 3.3V, VIN = 0V |
16 |
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25 |
A |
5V Version |
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Output Voltage |
1mA ≤IL ≤ 500mA |
5.0 |
4.950 |
5.050 |
V |
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5.0 |
4.880 |
5.120 |
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Reverse Output Current |
VOUT = 5.0V, VIN = 0V |
16 |
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25 |
A |
All Voltage Options |
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Output Voltage |
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20 |
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100 |
ppm/°C |
Temperature Coefficient |
(Note 1) |
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Line Regulation (Note 3) |
6V ≤ VIN ≤20V (Note 4) |
1.5 |
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10 |
%max |
Load Regulation (Note 3) |
IL = 1 to 500mA |
0.04 |
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0.20 |
%max |
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IL = 0.1 to 1mA |
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0.30 |
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Dropout Voltage |
IL = 1mA |
0.13 |
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0.16 |
V |
(Note 5) |
IL = 500mA |
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0.25 |
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0.42 |
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0.55 |
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0.70 |
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Ground Current |
IL = 1mA |
100 |
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150 |
A |
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IL = 10mA |
350 |
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500 |
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IL = 50mA |
1.5 |
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2.5 |
mA |
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IL = 100mA |
4.0 |
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7.0 |
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IL = 500mA |
7 |
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14 |
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Current Limit |
VOUT = 0 |
200 |
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500 |
mA |
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Ripple Rejection |
VIN – VOUT 1V (Avg), VRIPPLE = 0.5Vp-p |
58 |
50 |
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dB |
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fripple = 120Hz, ILOAD = 500mA, TJ = 25°C |
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Input Reverse Leakage Current |
VIN = -20V, VOUT = 0V |
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1.0 |
mA |
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Rev. 10/25/00
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