|
Free integrated circuits, diodes, triacs, and other semiconductors Datasheet Search and Download Site
| datasheet.co.kr > datasheet > LM337 > NEGATIVE VOLTAGE REGULATORS THREE-TERMINAL ADJUSTABLE |
|
Product Information |
|
LM137/LM237 LM337 THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATORS . . . . . . . . . OUTPUT VOLTAGE ADJUSTABLE DOWN TO Vref 1.5A GUARANTEED OUTPUT CURRENT 0.3%/V TYPICAL LOAD REGULATION 0.01%/V TYPICAL LINE REGULATION CURRENT LIMIT CONSTANT WITH TEMPERATURE RIPPLE REJECTION : 77dB STANDARD 3-LEAD TRANSISTOR PACKAGES EXCELLENT THERMAL REGULATION: 0.002%/V 50ppm/°C TEMPERATURE COEFFICIENT TO-3 DESCRIPTION The LM137 series are adjustable 3-terminal negative voltage regulators capable of supplying in excess - 1.5A over a -1.2 to - 37V output voltage range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, LM137 regulators are supplied in standard transistor packages which are easily mounted and handled. In addition to higher performance than fixed regulators, the LM137 series offer full overload protection available only in integrated circuits. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. PIN CONNECTIONS TO-3 (bottom view) TO-39 (bottom view) TO-220 TO-39 TO-220 (front view) 1 - Adj 2 - Output 3 - Input 1 - Output 2 - Adj Case is input 1 - Adj 2 - Output 3 - input Heatsink surface connected to input March 1993 1/14 LM137-LM237-LM337 ABSOLUTE MAXIMUM RATING Symbol VI - VO IO Toper Input Output Voltage Differential Output Current TO-220/TO-3 TO-39 LM137 LM237 LM337 Tstg Ptot Parameter Value 40 1.5 0.5 -55 to 150 -25 to 150 0 to 125 -65 to 150 Internally Limited oC oC Unit V A W THERMAL CHARACTERISTICS Symbol Parameter TO-3 TO-220 TO-39 Rthj-amb Junction-ambient Thermal Resistance TO-3 TO-220 TO-39 Typ. Max. 4 3 15 35 70 160 o Unit o Rthj-case Junction-case Thermal Resistance C/W C/W ORDER CODES PART NUMBER LM137 LM237 LM337 TEMPERATURE RANGE -55 to 150 oC -25 to 150 oC 0 to 125 C o PACKAGE TO-3 LM137K LM237K LM337K LM237SP LM337SP TO-220 TO-39 LM137H LM237H LM337H 2/14 LM137-LM237-LM337 SCHEMATIC DIAGRAM 3/14 LM137-LM237-LM337 ELECTRICAL CHARACTERISICS o o LM137: -55 C < Tj < 150 C o LM237: -25 C < Tj < 150 o C LM337: 0 o C < Tj < 150 o C V I - V O = 5V, I O = 0.5 A (unless otherwise specified) Symbol Vref Parameter Reference Voltage Tamb = 25 oC Tmin ≤ Tj ≤ Tmax 3V ≤ |VI - VO| ≤ 40V, 10mA ≤ |IO| ≤ |IO(max)| P ≤ Pmax Line Regulation (Tamb = 25 oC, 3V ≤ |VI -VO| ≤ 40V) - Note 2 IO = 0.1 A IO = 20 mA Load Regulation (Tamb = 25 oC, 10mA ≤ |IO| ≤ |IO(max)|) - Note 2 |VO| ≤ 5V |VO| ≥ 5V Thermal Regulation (Tamb = 25 oC, pulse 10 ms) Iadj ∆Iadj Adjustment Pin Current Adjustment Pin Current Change (Tamb = 25 oC, 10mA ≤ |IO| ≤ |IO(max)|, 3V ≤ |VI -VO| ≤ 40V) Line Regulation (3V ≤ |VI -VO| ≤ 40V) - Note 2 Load Regulation (10mA ≤ |IO| ≤ |IO(max)|) - Note 2 |VO| ≤ 5V |VO| ≥ 5V Minimum Load Current |VI -V O| ≤ 40V |VI -V O| ≤ 10V Short Circuit Output Current |VI -V O| ≤ 15V (TO-3 and TO-220) |VI -V O| ≤ 15V (TO-39) |VI -V O| = 40V, Tj = 25 oC (TO-3 and TO-220) |VI -V O| = 40V, Tj = 25 oC (TO-39) RMS Output Noise (% of VO) Tamb = 25 oC, 10Hz ≤ f ≤ 10KHz Ripple Rejection Ratio VO = - 10 V, f = 120 Hz Cadj = 10 µF Temperature Stability Long Term Stability (Tamb = 125 C, 1000H) o LM137/LM237 Min. -1.225 Typ. -1.25 Max. Min. LM337 Typ. -1.25 Max. -1.287 Unit -1.275 -1.213 V -1.2 -1.25 -1.3 -1.2 -1.25 -1.3 K VI 0.01 0.01 0.02 0.02 0.01 0.01 0.04 0.04 %/V %/V KVO 15 0.3 0.002 65 2 25 0.5 0.02 100 5 15 0.3 0.003 65 2 50 1 0.04 100 5 mV % %/W µA µA K VI KVO 0.02 0.05 0.02 0.07 %/V 20 0.3 2.5 1.2 1.5 0.5 0.24 0.15 2.2 0.4 0.2 0.003 50 1 5 3 1.5 0.5 0.15 0.1 20 0.3 2.5 1.5 2.2 0.4 0.2 0.003 70 1.5 10 6 mV % mA mA A A A A % |IO(min)| IOS VNO Rvf 66 60 77 0.6 0.3 1 66 60 77 0.6 0.3 1 dB dB % % KVT KVH Notes : 1. Although power d... |
|
Link URL |
| http://www.datasheet.co.kr/datasheet-html/L/M/3/LM337_STMicroelectronics.pdf.html |
|
Since 2010 - jixjix@gmail.com -
MOSFET -
TTL -
LINEAR VOLTAGE REGULATOR |