Datasheet LM337 (ON Semiconductor) - 2

LM337 MAXIMUM RATINGS
(TA = +25°C, unless otherwise noted)
Rating Symbol Value Unit
Input−Output Voltage Differential VI−VO 40 Vdc Power Dissipation Case 221ATA = +25°C PD Internally Limited W Thermal Resistance, Junction−to−Ambient qJA 65 °C/W Thermal Resistance, Junction−to−Case qJC 5.0 °C/W Case 936 (D2PAK) TA = +25°C PD Internally Limited W Thermal Resistance, Junction−to−Ambient qJA 70 °C/W Thermal Resistance, Junction−to−Case qJC 5.0 °C/W Operating Junction Temperature Range TJ −40 to +125 °C Storage Temperature Range Tstg −65 to +150 °C 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
(|VI−VO| = 5.0 V; IO = 0.5 A for T package; TJ = Tlow to Thigh [Note 1]; Imax and Pmax [Note 2].)
Characteristics Figure Symbol Min Typ Max Unit
Line Regulation (Note 3), TA = +25°C, 3.0 V ≤ |VI−VO| ≤ 40 V 1 Regline − 0.01 0.04 %/V Load Regulation (Note 3), TA = +25°C, 10 mA ≤ IO ≤ Imax 2 Regload |VO| ≤ 5.0 V − 15 50 mV |VO| ≥ 5.0 V − 0.3 1.0 % VO Thermal Regulation, TA = +25°C (Note 5), 10 ms Pulse Regtherm − 0.003 0.04 % VO/W Adjustment Pin Current 3 IAdj − 65 100 mA Adjustment Pin Current Change, 2.5 V ≤ |VI−VO| ≤ 40 V, 1, 2 DIAdj − 2.0 5.0 mA 10 mA ≤ IL ≤ Imax, PD ≤ Pmax, TA = +25°C Reference Voltage, TA = +25°C, 3.0 V ≤ |VI−VO| ≤ 40 V, 3 Vref −1.213 −1.250 −1.287 V 10 mA ≤ IO ≤ Imax, PD ≤ Pmax, TJ = Tlow to Thigh −1.20 −1.25 −1.30 Line Regulation (Note 3), 3.0 V ≤ |VI−VO| ≤ 40 V 1 Regline − 0.02 0.07 %/V Load Regulation (Note 3), 10 mA ≤ IO ≤ Imax 2 Regload |VO| ≤ 5.0 V − 20 70 mV |VO| ≥ 5.0 V − 0.3 1.5 % VO Temperature Stability (Tlow ≤ TJ ≤ Thigh) 3 TS − 0.6 − % VO Minimum Load Current to Maintain Regulation 3 ILmin mA (|VI−VO| ≤ 10 V) − 1.5 6.0 (|VI−VO| ≤ 40 V) − 2.5 10 Maximum Output Current 3 Imax A |VI−VO| ≤ 15 V, PD ≤ Pmax, T Package − 1.5 2.2 |VI−VO| ≤ 40 V, PD ≤ Pmax, TJ = +25°C, T Package − 0.15 0.4 RMS Noise, % of VO, TA = +25°C, 10 Hz ≤ f ≤ 10 kHz N − 0.003 − % VO Ripple Rejection, VO = −10 V, f = 120 Hz (Note 4) 4 RR dB Without CAdj − 60 − CAdj = 10 mF 66 77 − Long−Term Stability, TJ = Thigh (Note 6), TA = +25°C for 3 S − 0.3 1.0 %/1.0 k Endpoint Measurements Hrs. Thermal Resistance, Junction−to−Case, T Package RqJC − 4.0 − °C/W 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. Tlow to Thigh = 0° to +125°C, for LM337T, D2T. Tlow to Thigh = −40° to +125°C, for LM337BT, BD2T. 2. Imax = 1.5 A, Pmax = 20 W 3. Load and line regulation are specified at constant junction temperature. Change in VO because of heating effects is covered under the Thermal Regulation specification. Pulse testing with a low duty cycle is used. 4. CAdj, when used, is connected between the adjustment pin and ground. 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.
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