l4957a STMicroelectronics, l4957a Datasheet
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l4957a
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l4957a Summary of contents
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... April 2006 ULDO linear regulator = 125°C J Description The L4957AD devices are Ultra Low Drop Output linear regulators with an internal N-channel MOSFET of 200mΩ particulary suitable for low voltage/low dropout applications. Operating with a input voltage from 3V to 14V they are capable to deliver up to 5A. ...
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... Contents Contents 1 Block diagram and typical application . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2/12 L4957A ...
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... Block diagram and typical application Figure 1. Block diagram 10µF REGULATOR Figure 2. Typical application 3V to 14V CURRENT V LIMIT REF + PRE E L4957AD C1 2 GND Block diagram and typical application CHARGE PUMP BUFFER POWER DMOS 200mΩ OUT THERMAL SHUTDOWN GND D00IN1108A ...
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... Name Pin N° GND 3 OUT 4/ GND PAK Description Unregulated input voltage; this pin must be bypassed with a capacitor larger than 10µF. To connect to Ground to get 1.5V, 1.8V, 2.5V or 3.3V output. Regulated output voltage. A minimum bypass capacitor of 22µF is required to insure stability. L4957A OUT IN D98IN933A ...
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... L4957A 3 Maximum ratings 3.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol V Supply input voltage IN T Junction temperature J T Storage temperature STG 3.2 Thermal data Table 3. Thermal data Symbol R Maximum thermal resistance junction-case thJC R Maximum thermal resistance junction-ambient thJA Thermal Shutdown Thermal Hysteresis ...
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... I < ± 0. ±5% 0.1A < I < (1) (1) (1) < 14V 120Hz ∆ from 0°C to +125°C. J L4957A Min Typ Max 3 14 1.485 1.5 1.515 (1) 1.47 1.5 1.53 1.782 1.8 1.818 (1) 1.764 1.8 1.836 2.475 2.5 2.525 (1) 2.45 2.5 2.55 3.267 3.3 3.333 (1) 3 ...
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... L4957A Figure 4. Line regulation vs. junction temperature Figure 6. Maximum output current vs. junction temperature rre > ...
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... ° ° ° lim its ∆ Output voltage vs. output current (V = 1.5V) OUT V OUT (V) 6.3 L4957A D00IN1109 I OUT (A) ...
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... L4957A 5 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...
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... Figure 11. Package dimensions 10/12 mm. Min Typ Max 4.30 4.60 2.49 2.69 0.03 0.23 0.70 0.93 1.25 1.40 0.45 0.60 1.21 1.36 8.95 9.35 10.00 10.28 4.88 5.28 15.00 15.85 1.27 1.40 1.40 1.75 0.40 0° 8° L4957A inch Min Typ Max 0.169 0.181 0.098 0.106 0.001 0.009 0.027 0.037 0.049 0.055 0.017 0.024 0.047 0.054 0.352 0.368 0.393 0.405 0.192 0.208 0.590 0.624 0.050 0.055 0.055 0.069 0.016 0° 8° ...
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... L4957A 6 Revision history Table 6. Revision history Date 12-Feb-2002 20-Apr-2006 Revision 5 Removed the L4957AV part number and its references in the whole document 6 New template Revision history Changes 11/12 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 12/12 Please Read Carefully: © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com L4957A ...