 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| L4941 VERY LOW DROP 1A REGULATOR .LOWDROPOUTVOLTAGE( .VERYLOWQUI .THERMALSHUTDOWN .SHORTCI .REVERSEPOLARI at 1A) DESCRIPTION 450 mV typ ESCENT CURRENT RCUIT PROTECTION TY PROTECTION SOT-82 SOT-194 The L4941 is a three terminal 5 V positive regulator available in TO-220, SOT-82, SOT-194 and DPAK packages, making it useful in a wide range of the industrial and consumer applications. Thanks to its very low input/output voltage drop, this device is particularly suitable for battery powered equipment, reducing consumption and prolonging battery life. It employs internal current limiting, antisaturation circuit, thermal shut-down and safe area protection. BLOCK DIAGRAM 3 1 TO-220 DPAK (TO-252) April 1994 1/13 L4941 PIN CONNECTIONS AND ORDERING NUMBER (top view) TO-220 SOT-82 /SOT-194 DPAK ORDERING NUMBERS L4941BV L4941BX L4941BS L4941BDT OUTPUT VOLTAGE 5V 5V 5V 5V PACKAGE TO-220 SOT-82 SOT-194 DPAK ABSOLUTE MAXIMUM RATINGS Symbol Vi ViR IO Ptot T j, T s t g Parameter Forward Input Voltage Reverse Input Voltage (R O = 100 ) Output Current Power Dissipation Junction and Storage Temperature Value 30 - 15 Internally Limited Internally Limited - 40 to 150 C Unit V V THERMAL DATA SOT-82 SOT-194 DPAK Rthj-case Thermal Resistance Junction-case Rthj-amb Termal resistance Junction-ambient Max Max 8 100 TO-220 3 50 o o C/W C/W 2/13 L4941 TEST CIRCUITS Figure 1 : DC Parameters. Figure 2 : Load Regulation. Figure 3 : Ripple Rejection. 3/13 L4941 ELECTRICAL CHARACTERISTICS (refer to the test circuits T j = 25 C, C i = 0.1 F, C o = 22 F, unless otherwise specified) Symbol Output Voltage Input Voltage (unless otherwise specified) Vo Vi V o V o IQ I Q Vd V o ____ T SVR Isc Zo eN Output Voltage Operating Input Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change Dropout Voltage Output Voltage Drift Supply Voltage Rejection Short Circuit Current Limit Output Impedance Output Noise Voltage f = 120 Hz I o = 0.5 A V i = 14 V Vi = 6 V f = 1 kHz I o = 0.5 A B = 100 Hz to 100 kHz 58 I o = 5 mA to 1 A V i = 6 V to 14 V I o = 5 mA V i = 6 V to 16 V I o = 5 mA I o = 5 mA to 1 A I o = 0.5 A to 1 A Vi = 6 V V i = 6 V to 14 V I o = 0.5 A Io = 1 A I o = 5 mA Io = 1 A I o = 5 mA Io = 1 A 250 450 0.6 68 1.6 1.8 30 30 2.0 2.2 m V/V o 5 8 5 4 20 4.8 Parameter Test Conditions Min. Typ. 5 7 5 5.2 16 20 20 15 8 40 3 - 10 450 700 mV mV/C dB V V mV mV Max. Unit mA mA A Figure 4 : Dropout voltage vs. Output Current. Figure 5 : Dropout Voltage vs. Temperature. 4/13 L4941 Figure 6 : Output voltage vs. Temperature. Figure 7 : Quiescent Current vs. Temperature Figure 8 : Quiescent Current vs.Input Voltage. Figure 9 : Quiescent Current vs.Output Current. Figure 10 : Short-circuit Current vs. Temperature. Figure 11 : Peak Output Current vs. Input/Output Differential Voltage. 5/13 L4941 Figure 12 : Low Voltage Behavior. Figure 13 : Supply Voltage Rejection vs. Frequency Figure 14 : Supply Voltage Rejection vs. Output Current. Figure 15 : Load Dump Characteristics. Figure 16 : Line Transient Response. Figure 17 : Load Transunt Response. 6/13 L4941 Figure 18 : Total Power Dissipation (TO-220). Figure 19 : Distribued Supply with On-card L4940 and L4941 Low-drop Regulators. ADVANTAGES OF THESE APPLICATIONS ARE : - On card regulation with short-circuit and thermal protection on each output. Very high total system efficiency due to the switching preregulation and very low-drop postregulations. 7/13 L4941 Figure 20 : Distribued Supply with On-card L4940 and L4941 Low-drop Regulators. 8/13 L4941 TO-220 MECHANICAL DATA DIM. MIN. A C D D1 E F F2 G H2 H3 L2 L3 L5 L6 L7 Dia. 26.3 2.6 15.1 6 3.65 10.05 16.2 26.7 27.1 3 15.8 6.6 3.85 1.035 0.102 0.594 0.236 0.144 2.4 1.2 0.35 0.8 1.15 4.95 5.08 mm TYP. MAX. 4.8 1.37 2.8 1.35 0.55 1.05 1.4 5.21 10.4 10.4 0.396 0.638 1.051 1.067 0.118 0.622 0.260 0.152 0.094 0.047 0.014 0.031 0.045 0.195 0.200 MIN. inch TYP. MAX. 0.189 0.054 0.110 0.053 0.022 0.041 0.055 0.205 0.409 0.409 P011D 9/13 L4941 SOT-82 MECHANICAL DATA mm MIN. A B b b1 C c1 D e e3 F H 7.4 10.5 0.7 0.49 2.4 1.2 15.7 2.2 4.4 3.8 2.54 TYP. MAX. 7.8 11.3 0.9 0.75 2.7 MIN. 0.291 0.413 0.028 0.019 0.04 0.047 0.618 0.087 0.173 0.150 0.100 inch TYP. MAX. 0.307 0.445 0.035 0.030 0.106 DIM. C A F H c1 b b1 e3 e D B P032A 10/13 L4941 SOT-194 MECHANICAL DATA DIM. MIN. A B b b1 C c1 c2 D e e3 F H P S S1 T 4 2 0.1 7.4 10.5 0.7 0.49 2.4 1.2 1.3 6 2.2 4.4 3.8 2.54 45 (typ.) 0.157 0.079 0.004 mm TYP. MAX. 7.8 11.3 0.9 0.75 2.7 MIN. 0.291 0.413 0.028 0.019 0.094 0.047 0.051 0.236 0.087 0.173 0.150 0.100 inch TYP. MAX. 0.307 0.445 0.035 0.030 0.106 C A F C1 S T P H e e3 P032B S1 b1 b c2 D 11/13 B L4941 TO-252 (DPAK) MECHANICAL DATA DIM. MIN. A A1 B B1 B2 B3 B4 C C1 D E G H L L1 L2 L3 L4 0.8 0.3 1.9 0.48 0.45 6 6.4 4.4 9.35 2.55 0.6 0.8 1.2 0.45 0.031 0.012 2.2 0.9 0.64 3.4 5.2 mm TYP. MAX. 2.4 1.1 0.8 3.6 5.4 0.9 2.1 0.6 0.6 6.2 6.6 4.6 10.1 3.05 1 0.074 0.018 0.017 0.236 0.252 0.173 0.368 0.100 0.023 0.031 0.047 0.017 MIN. 0.086 0.035 0.025 0.133 0.204 inch TYP. MAX. 0.094 0.043 0.031 0.141 0.212 0.035 0.082 0.023 0.023 0.244 0.260 0.181 0.397 0.120 0.039 H A C L3 L2 L4 D L B3 B =G= == == == == B2 B1 B4 E L1 12/13 1 2 3 C1 A1 L4941 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned in this publication are subject to change without notice. This publication supersedes and r eplaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical componentsin life s upport devices or systems without express written approval of SGS-THOMSON Microelectonics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 13/13 |
Price & Availability of L4941BDT
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |