Sipex Corporation SPX1521U-3.3, SPX1521U-5.0, SPX1521S-2.5, SPX1521S-3.3, SPX1521S-5.0 Datasheet
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SPX1521
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300mA Low Dropout Voltage Regulator |
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(PRELIMINARY INFORMATION) |
FEATURES |
APPLICATIONS |
• 1% Output Accuracy @ 2.5V, 3.3V, 5V, @ 300mA Output |
• Battery Powered Systems |
• Very Low Quiescent Current |
• Cordless Telephones |
• 0.42V (Typ.) Dropout Voltage @ 300mA |
• 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 LT1521 |
• Voltage Reference |
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• Automotive Electronics |
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PRODUCT DESCRIPTION
The SPX1521 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 SPX1521 features very low quiescent current and very low dropout voltage. This includes a tight initial tolerance of ± 1% max, and very low output temperature coefficient, making the SPX1521 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 SPX1521 is offered in a SO-8, SOT-252, TO-223, TO-220 & TO-263 packages.
PIN CONNECTIONS
8-Pin Surface Mount (S) |
SOT-223 (M3) |
TO-263-3 (T) |
TO-220-3 (U) |
VOUT |
1 |
8 |
VIN |
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SPX1521 |
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SPX1521 |
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SENSE/ ADJ |
2 |
7 |
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GND |
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SPX1521 |
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3SPX1521 6 |
1 |
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3 |
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2 |
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GND |
GND |
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1 |
2 |
3 |
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ERROR |
4 |
5 |
VIN |
GND VOUT |
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SHDN |
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Top View |
VOUT |
GND VIN |
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Top View |
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Top View |
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SHDN VOUT VOUT GND VIN
<0.25V |
OFF |
Front View |
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>2.8V |
ON |
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NC |
ON |
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TO-252 (R)
SPX1521 |
3 |
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VIN |
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2 |
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GND |
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1 |
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VOUT |
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Front View
Rev. 10/24/00
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SPX1521 |
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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
SPX1521……………………………..… -40°C to + 125°C
ELECTRICAL CHARACTERISTICS at Vs = ±15V, Ta = 25°C, unless otherwise specified. Boldface apply over the full operating temperature range.
PARAMETER |
CONDITIONS |
Typ. |
SPX1521 |
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 ≤ 300mA |
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 ≤ 300mA |
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 ≤ 300mA |
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 300mA |
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 |
MV |
( Note 5 ) |
IL = 300mA |
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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 = 300mA |
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 = 0.3A, 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. 10/24/00
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