Maker : ON Semiconductor
Part No. : LM337T

  Datasheet PDF : LM337T.pdf
  Cross Reference : LM337T Cross Reference
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Product Information

Order this document by LM337/D LM337 Three-Terminal Adjustable Output Negative Voltage Regulator The LM337 is an adjustable 3–terminal negative voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of –1.2 V to – 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow–out proof. The LM337 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337 can be used as a precision current regulator. • Output Current in Excess of 1.5 A THREE–TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR SEMICONDUCTOR TECHNICAL DATA • • • • • • • Output Adjustable between –1.2 V and – 37 V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Constant with Temperature Output Transistor Safe–Area Compensation Floating Operation for High Voltage Applications Eliminates Stocking many Fixed Voltages Available in Surface Mount D2PAK and Standard 3–Lead Transistor Package T SUFFIX PLASTIC PACKAGE CASE 221A Heatsink surface connected to Pin 2. 1 2 3 Standard Application IPROG + R2 R1 120 IAdj + D2T SUFFIX PLASTIC PACKAGE CASE 936 (D2PAK) Pin 1. Adjust 2. Vin 3. Vout Cin* 1.0 µF CO** 1.0 µF 1 2 3 Vin –Vin LM337 Vout –Vout Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. ORDERING INFORMATION * Cin is required if regulator is located more than 4 inches from power supply filter. * A 1.0 µF solid tantalum or 10 µF aluminum electrolytic is recommended. ** CO is necessary for stability. A 1.0 µF solid tantalum or 10 µF aluminum electrolytic ** is recommeded. V out Device LM337BD2T LM337BT LM337D2T LM337T TJ = – 40° to +125°C TJ = 0° to +125°C Operating Temperature Range Package Surface Mount Insertion Mount Surface Mount Insertion Mount Rev 1 + –1.25 V 1 ) R R2 1 © Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA 1 LM337 MAXIMUM RATINGS Rating Input–Output Voltage Differential Power Dissipation Case 221A TA = +25°C Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Case 936 (D2PAK) TA = +25°C Thermal Resistance, Junction–to–Ambient Thermal Resistance, Junction–to–Case Operating Junction Temperature Range Storage Temperature Range Symbol VI–VO Value 40 Unit Vdc PD θJA θJC PD θJA θJC TJ Tstg Internally Limited 65 5.0 Internally Limited 70 5.0 – 40 to +125 – 65 to +150 W °C/W °C/W W °C/W °C/W °C °C ELECTRICAL CHARACTERISTICS (|VI–VO| = 5.0 V; IO = 0.5 A for T package; TJ = Tlow to Thigh [Note 1]; Imax and Pmax [Note 2].) Characteristics Line Regulation (Note 3), TA = +25°C, 3.0 V ≤ |VI–VO| ≤ 40 V Load Regulation (Note 3), TA = +25°C, 10 mA ≤ IO ≤ Imax |VO| ≤ 5.0 V |VO| ≥ 5.0 V Thermal Regulation, TA = +25°C (Note 6), 10 ms Pulse Adjustment Pin Current Adjustment Pin Current Change, 2.5 V ≤ |VI–VO| ≤ 40 V, 10 mA ≤ IL ≤ Imax, PD ≤ Pmax, TA = +25°C Reference Voltage, TA = +25°C, 3.0 V ≤ |VI–VO| ≤ 40 V, 10 mA ≤ IO ≤ Imax, PD ≤ Pmax, TJ = Tlow to Thigh Line Regulation (Note 3), 3.0 V ≤ |VI–VO| ≤ 40 V Load Regulation (Note 3), 10 mA ≤ IO ≤ Imax |VO| ≤ 5.0 V |VO| ≥ 5.0 V Temperature Stability (Tlow ≤ TJ ≤ Thigh) Minimum Load Current to Maintain Regulation (|VI–VO| ≤ 10 V) (|VI–VO| ≤ 40 V) Maximum Output Current |VI–VO| ≤ 15 V, PD ≤ Pmax, T Package |VI–VO| ≤ 40 V, PD ≤ Pmax, TJ = +25°C, T Package RMS Noise, % of VO, TA = +25°C, 10 Hz ≤ f ≤ 10 kHz Ripple Rejection, VO = –10 V, f = 120 Hz (Note 4) Without CAdj CAdj = 10 µF Long–Term Stability, TJ = Thigh (Note 5), TA = +25°C for Endpoint Measurements Thermal...

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