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| L4940 SERIES VERY LOW DROP 1.5A REGULATORS s s s s s s PRECISE 5, 8.5, 10, 12V OUTPUTS LOW DROPOUT VOLTAGE (500mV Typ. at 1.5A) VERY LOW QUIESCENT CURRENT THERMAL SHUTDOWN SHORT CIRCUIT PROTECTION REVERSE POLARITY PROTECTION TO-220 TO-220FP DESCRIPTION The L4940 series of three terminal positive regulators is available in TO-220, TO-220FP and D2PAK packages and with several fixed output voltages, making it useful in a wide range of industrial and consumer applications. Thanks to its very low input/output voltage drop, these devices are particularly suitable for battery powered equipments, reducing consumption and prolonging battery life. Each type employs internal current limiting, antisaturation circuit, thermal shut-down and safe area protection. D2PAK BLOCK DIAGRAM February 2003 1/16 L4940 SERIES ABSOLUTE MAXIMUM RATINGS Symbol VI Forward Input Voltage Reverse Input Voltage VIR VO=5V VO=10V VO=12V IO PD Tstg Top Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range RO=100 RO=200 RO=240 VO=8.5V RO=180 Parameter Value 30 -15 -15 -15 -15 Internally Limited Internally Limited -40 to +150 -40 to +150 Unit V V V V V mA mW C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. THERMAL DATA Symbol Rthj-case Rthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient TO-220 3 50 TO-220FP 5 60 D2PAK 3 62.5 Unit C/W C/W CONNECTION DIAGRAM (top view) TO-220 TO-220FP D2PAK ORDERING CODES TO-220 L4940V5 L4940V85 L4940V10 L4940V12 TO-220FP L4940P5 L4940P85 L4940P10 L4940P12 D2PAK (*) L4940D2T5 L4940D2T85 L4940D2T10 L4940D2T12 OUTPUT VOLTAGE 5V 8.5 V 10 V 12 V (*) Available in Tape & Reel with the suffix "-TR". 2/16 L4940 SERIES TEST CIRCUITS Figure 1 : DC Parameter Figure 2 : Load Rejection Figure 3 : Ripple Rejection 3/16 L4940 SERIES ELECTRICAL CHARACTERISTICS OF L4940V5 (Refer to test circuit, VI=7V, CI = 0.1F, CO = 22F, TJ = 25C, unless otherwise specified.) Symbol VO VO VI VO VO Iq Iq Parameter Output Voltage Output Voltage Input Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change IO = 500 mA IO = 5mA to 1.5A IO = 5 mA VI = 6 to 17V IO = 5mA to 1.5A IO = 0.5A to 1A IO = 5 mA IO = 1.5A IO = 5 mA IO = 1.5A VO/T Output Voltage Drift SVR Vd Isc Supply Voltage Rejection Dropout Voltage Short Circuit Current f = 120Hz IO = 0.5A IO = 1.5A VI = 14V VI = 6.5V IO = 1A 58 VI = 6.5 to 16V 0.5 68 200 500 2 2.2 400 900 2.7 2.9 VI = 6.5V IO = 5 mA 4 8 5 5 30 VI = 6.5 to 15V Test Conditions Min. 4.9 4.8 Typ. 5 5 Max. 5.1 5.2 17 10 25 15 8 50 3 15 Unit V V V mV mV mV mA mA mA mA mv/C dB mV mV A ELECTRICAL CHARACTERISTICS OF L4940V85 (Refer to test circuit, VI=10.5V, CI = 0.1F, CO = 22F,TJ = 25C, unless otherwise specified.) Symbol VO VO VI VO VO Iq Iq Parameter Output Voltage Output Voltage Input Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change IO = 500 mA IO = 5mA to 1.5A IO = 5 mA VI = 9.5 to 17V IO = 5mA to 1.5A IO = 0.5A to 1A IO = 5 mA IO = 1.5A IO = 5 mA IO = 1.5A VO/T Output Voltage Drift SVR Vd Isc Supply Voltage Rejection Dropout Voltage Short Circuit Current f = 120Hz IO = 0.5A IO = 1.5A VI = 14V VI = 10.2V IO = 1A 58 VI = 10.2 to 16V 0.8 66 200 500 2 2.2 400 900 2.7 2.9 VI = 10.2V IO = 5 mA 4 12 8 4 30 VI = 10.2 to 16V Test Conditions Min. 8.3 8.15 Typ. 8.5 8.5 Max. 8.7 8.85 17 9 30 16 8 50 2.5 15 Unit V V V mV mV mV mA mA mA mA mv/C dB mV mV A 4/16 L4940 SERIES ELECTRICAL CHARACTERISTICS OF L4940V10 (Refer to test circuit, VI=12V, CI = 0.1F, CO = 22F, TJ = 25C, unless otherwise specified.) Symbol VO VO VI VO VO Iq Iq Parameter Output Voltage Output Voltage Input Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change IO = 500 mA IO = 5mA to 1.5A IO = 5 mA VI = 11 to 17V IO = 5mA to 1.5A IO = 0.5A to 1A IO = 5 mA IO = 1.5A IO = 5 mA IO = 1.5A VO/T Output Voltage Drift SVR Vd Isc Supply Voltage Rejection Dropout Voltage Short Circuit Current f = 120Hz IO = 0.5A IO = 1.5A VI = 14V VI = 11.7V IO = 1A 56 VI = 11.7 to 16V 1 62 200 500 2 2.2 400 900 2.7 2.9 VI = 11.7V IO = 5 mA 3 15 10 5 30 VI = 11.7 to 15V Test Conditions Min. 9.8 9.6 Typ. 10 10 Max. 10.2 10.4 17 8 35 20 8 50 2 13 Unit V V V mV mV mV mA mA mA mA mv/C dB mV mV A ELECTRICAL CHARACTERISTICS OF L4940V12 (Refer to test circuit, VI=14V, CI = 0.1F, CO = 22F, TJ = 25C, unless otherwise specified.) Symbol VO VO VI VO VO Iq Iq Parameter Output Voltage Output Voltage Input Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change IO = 500 mA IO = 5mA to 1.5A IO = 5 mA VI = 13 to 17V IO = 5mA to 1.5A IO = 0.5A to 1A IO = 5 mA IO = 1.5A IO = 5 mA IO = 1.5A VO/T Output Voltage Drift SVR Vd Isc ZO Supply Voltage Rejection Dropout Voltage Short Circuit Current Output Impedance f = 120Hz IO = 0.5A IO = 1.5A VI = 14V f = 120Hz IO = 0.5A IO = 1A 55 VI = 13.8 to 16V 1.2 61 200 500 2 40 400 900 2.7 VI = 13.8V IO = 5 mA 3 15 10 4 30 VI = 13.8 to 15V Test Conditions Min. 11.75 11.5 Typ. 12 12 Max. 12.25 12.5 17 7 35 25 8 50 1.5 10 Unit V V V mV mV mV mA mA mA mA mv/C dB mV mV A m 5/16 L4940 SERIES TYPICAL CHARACTERISTICS Figure 4 : Dropout Voltage vs Output Current Figure 7 : Output Voltage vs Temperature (L4940V85) Figure 5 : Dropout Voltage vs Temperature Figure 8 : Output Voltage vs Temperature (L4940V10) Figure 6 : Output Voltage vs Temperature (L4940V5) Figure 9 : Output Voltage vs Temperature (L4940V12) 6/16 L4940 SERIES Figure 10 : Quiescent Current vs Temperature (L4940V5) Figure 13 : Short Circuit Current vs Temperature (L4940V5) Figure 11 : Quiescent Current vs Input Voltage (L4940V5) Figure 14 : Peak Output Current vs Input/Output Differential Voltage (L4940V5) Figure 12 : Quiescent Current vs Output Current (L4940V5) Figure 15 : Low Voltage Behavior (L4940V5) 7/16 L4940 SERIES Figure 16 : Low Voltage Behavior (L4940V85) Figure 19 : Supply Voltage Rejection vs Frequency (L4940V5) Figure 17 : Low Voltage Behavior (L4940V10) Figure 20 : Supply Voltage Rejection vs Output Current (L4940V5) Figure 18 : Low Voltage Behavior (L4940V12) Figure 21 : Lad Dump Characteristics (L4940V5) 8/16 L4940 SERIES Figure 22 : Line Transient Response (L4940V5) Figure 24 : Load transient Response Figure 23 : Total Power Dissipation 9/16 L4940 SERIES Figure 25 : Distributed Supply with On-card L4940 and L4941 low drop regulator Figure 26 : Distributed Supply with On-card L4940 and L4941 low drop regulator ADVANTAGES OTF THESE APPLICATION ARE: On card regulation with short-circuit and thermal protection on each output. Vary high total system efficency due to the switching preregulation and very low-drop postregulation 10/16 L4940 SERIES Figure 27 : Distributed Supply with On-card L4940 and L4941 low drop regulator ADVANTAGES OF THIS CONFIGURATION ARE: Very high regulation (line and load on both the output voltage 12V output short circuit and thermally protected Very high efficency on the 12 V output due to the low drop regulator 11/16 L4940 SERIES TO-220 MECHANICAL DATA DIM. A C D D1 E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 DIA. 13.0 2.65 15.25 6.2 3.5 3.75 0.49 0.61 1.14 1.14 4.95 2.4 10.0 16.4 14.0 2.95 15.75 6.6 3.93 3.85 0.511 0.104 0.600 0.244 0.137 0.147 mm. MIN. 4.40 1.23 2.40 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 0.019 0.024 0.044 0.044 0.194 0.094 0.393 0.645 0.551 0.116 0.620 0.260 0.154 0.151 TYP MAX. 4.60 1.32 2.72 MIN. 0.173 0.048 0.094 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 inch TYP. MAX. 0.181 0.051 0.107 P011C 12/16 L4940 SERIES TO-220FP MECHANICAL DATA DIM. A B D E F F1 F2 G G1 H L2 L3 L4 L6 L7 DIA. 28.6 9.8 15.9 9 3 mm. MIN. 4.40 2.5 2.5 0.45 0.75 1.15 1.15 4.95 2.4 10.0 16 30.6 10.6 16.4 9.3 3.2 1.126 0.385 0.626 0.354 0.118 TYP MAX. 4.60 2.7 2.75 0.70 1 1.50 1.50 5.2 2.7 10.40 MIN. 0.173 0.098 0.098 0.017 0.030 0.045 0.045 0.194 0.094 0.393 0.630 1.204 0.417 0.645 0.366 0.126 inch TYP. MAX. 0.181 0.106 0.108 0.027 0.039 0.059 0.059 0.204 0.106 0.409 A B L3 L6 L7 F1 D F G1 E H F2 123 L2 L4 7012510/F G 13/16 L4940 SERIES D2PAK MECHANICAL DATA mm. DIM. MIN. A A1 A2 B B2 C C2 D D1 E E1 G L L2 L3 M R V2 0 4.88 15 1.27 1.4 2.4 0.4 8 0 10 8.5 5.28 15.85 1.4 1.75 3.2 0.192 0.590 0.050 0.055 0.094 0.016 8 4.4 2.49 0.03 0.7 1.14 0.45 1.23 8.95 8 10.4 0.393 0.335 0.208 0.624 0.055 0.068 0.126 TYP MAX. 4.6 2.69 0.23 0.93 1.7 0.6 1.36 9.35 MIN. 0.173 0.098 0.001 0.027 0.044 0.017 0.048 0.352 0.315 0.409 TYP. MAX. 0.181 0.106 0.009 0.036 0.067 0.023 0.053 0.368 inch P011P6G 14/16 L4940 SERIES Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 MIN. TYP. MAX. 7.086 0.519 inch 15/16 L4940 SERIES Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. (c) http://www.st.com 16/16 |
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