DATA SHEET www.onsemi.com Voltage Regulator - THREETERMINAL Adjustable Output, ADJUSTABLE NEGATIVE Negative VOLTAGE REGULATOR 1.5 A MARKING DIAGRAMS LM337 The LM337 is an adjustable 3terminal negative voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of LM 2 1.2 V to 37 V. This voltage regulator is exceptionally easy to use D PAK 337yyyy D2T SUFFIX and requires only two external resistors to set the output voltage. AWLYWWG CASE 936 Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blowout proof. The LM337 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337 can be used as a precision current Pin 1. Adjust regulator. 2. V in 3. V out Features Output Current in Excess of 1.5 A Output Adjustable between 1.2 V and 37 V TO220AB Internal Thermal Overload Protection T SUFFIX Internal Short Circuit Current Limiting Constant with Temperature CASE 221AB LM Output Transistor SafeArea Compensation 337xx Heatsink surface AWLYWWG connected to Pin 2. Floating Operation for High Voltage Applications Eliminates Stocking many Fixed Voltages 1 2 Available in Surface Mount D PAK and Standard 3Lead Transistor Package xx = BT, T These Devices are PbFree and are RoHS Compliant yyyy = BD2T, D2T A = Assembly Location WL = Wafer Lot I PROG Y = Year WW = Work Week R + + 2 G=PbFree Package C * C ** in O 1.0 F R 1.0 F 1 120 ORDERING INFORMATION I Adj See detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. V V in out LM337 -V -V in out * C is required if regulator is located more than 4 inches from power supply filter. in * A 1.0 F solid tantalum or 10 F aluminum electrolytic is recommended. ** C is necessary for stability. A 1.0 F solid tantalum or 10 F aluminum electrolytic O ** is recommended. R 2 V 1.25 V 1 out R 1 Figure 1. Standard Application Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: October, 2021 Rev. 11 LM337/DLM337 MAXIMUM RATINGS (T = +25C, unless otherwise noted) A Rating Symbol Value Unit InputOutput Voltage Differential V V 40 Vdc I O Power Dissipation Case 221A T = +25C P Internally Limited W A D Thermal Resistance, JunctiontoAmbient 65 C/W JA Thermal Resistance, JunctiontoCase 5.0 C/W JC 2 Case 936 (D PAK) T = +25C P Internally Limited W A D Thermal Resistance, JunctiontoAmbient 70 C/W JA Thermal Resistance, JunctiontoCase 5.0 C/W JC Operating Junction Temperature Range T 40 to +125 C J Storage Temperature Range T 65 to +150 C stg Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. ELECTRICAL CHARACTERISTICS ( V V = 5.0 V I = 0.5 A for T package T = T to T Note 1 I and P Note 2 .) I O O J low high max max Characteristics Figure Symbol Min Typ Max Unit Line Regulation (Note 3), T = +25C, 3.0 V V V 40 V 1 Reg 0.01 0.04 %/V A I O line Load Regulation (Note 3), T = +25C, 10 mA I I 2 Reg A O max load V 5.0 V 15 50 mV O V 5.0 V 0.3 1.0 % V O O Thermal Regulation, T = +25C (Note 5), 10 ms Pulse Reg 0.003 0.04 % V /W A therm O Adjustment Pin Current 3 I 65 100 A Adj Adjustment Pin Current Change, 2.5 V V V 40 V, 1, 2 I 2.0 5.0 A I O Adj 10 mA I I , P P , T = +25C L max D max A Reference Voltage, T = +25C, 3.0 V V V 40 V, 3 V 1.213 1.250 1.287 V A I O ref 10 mA I I , P P , T = T to T 1.20 1.25 1.30 O max D max J low high Line Regulation (Note 3), 3.0 V V V 40 V 1 Reg 0.02 0.07 %/V I O line Load Regulation (Note 3), 10 mA I I 2 Reg O max load V 5.0 V 20 70 mV O V 5.0 V 0.3 1.5 % V O O Temperature Stability (T T T ) 3 T 0.6 % V low J high S O Minimum Load Current to Maintain Regulation 3 I mA Lmin ( V V 10 V) 1.5 6.0 I O ( V V 40 V) 2.5 10 I O Maximum Output Current 3 I A max V V 15 V, P P , T Package 1.5 2.2 I O D max V V 40 V, P P , T = +25C, T Package 0.15 0.4 I O D max J RMS Noise, % of V , T = +25C, 10 Hz f 10 kHz N 0.003 % V O A O Ripple Rejection, V = 10 V, f = 120 Hz (Note 4) 4 RR dB O Without C 60 Adj C = 10 F 66 77 Adj LongTerm Stability, T = T (Note 6), T = +25C for 3 S 0.3 1.0 %/1.0 k J high A Endpoint Measurements Hrs. Thermal Resistance, JunctiontoCase, T Package R 4.0 C/W JC Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 1. T to T = 0 to +125C, for LM337T, D2T. T to T = 40 to +125C, for LM337BT, BD2T. low high low high 2. I = 1.5 A, P = 20 W max max 3. Load and line regulation are specified at constant junction temperature. Change in V because of heating effects is covered under the O Thermal Regulation specification. Pulse testing with a low duty cycle is used. 4. C , when used, is connected between the adjustment pin and ground. Adj 5. Power dissipation within an IC voltage regulator produces a temperature gradient on the die, affecting individual IC components on the die. These effects can be minimized by proper integrated circuit design and layout techniques. Thermal Regulation is the effect of these temperature gradients on the output voltage and is expressed in percentage of output change per watt of power change in a specified time. 6. Since Long Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot. www.onsemi.com 2