|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
NEGATIVE ADJUSTABLE VOLTAGE REGULATOR IP137SMD / IP137ASMD / IP137HVSMD / IP137AHVSMD / LM137SMD LM137ASMD LM137HVSMD LM137AHVSMD FEATURES * * * * * 1.5A Output Current Guaranteed Internal Thermal Overload Protection Output Short Circuit Protected Hermetic Ceramic Surface Mount Package Screening Options Available APPLICATIONS * * * Adjustable Power Supplies System Power Supplies Precision Voltage / Current Regulators DESCRIPTION The 137 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of -1.5A over an output voltage range of -1.2V to -37V (HV Series, -47V). The regulators are exceptionally easy to apply requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation. Every effort has been made to make these devices easy to use and difficult to damage. Internal current limiting and power limiting coupled with true thermal limiting prevents damage due to overloads or shorts, even if the regulators are not fastened to a heat sink. ABSOLUTE MAXIMUM RATINGS (TC = 25C unless otherwise stated) VI - VO IO PD TJ Tstg Input - Output Voltage Differential Standard HV Series Output Current Power Dissipation Operating Junction Temperature Range Storage Temperature Range 40V 50V Internally Limited Internally Limited -55 to +150C -65 to +150C THERMAL PROPERTIES Symbols RJC Parameters Thermal Resistance, Junction To Case Min. Typ. Max. 3.5 Units C/W ** This datasheet supersedes document 2831 Semelab Limited reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Coventry Road, Lutterworth, Leicestershire, LE17 4JB Semelab Limited Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales@semelab-tt.com Document Number 8211 Issue 2 Page 1 of 5 Website: http://www.semelab-tt.com NEGATIVE ADJUSTABLE VOLTAGE REGULATOR ELECTRICAL CHARACTERISTICS(1)(3) (TC = 25C unless otherwise stated) LM137, IP137, LM137HV, IP137HV Symbols VREF Parameters Reference Voltage Test Conditions IOUT = 10mA 10mA IOUT IMAX, P PMAX, 3V (VIN-VOUT) VMAX 3V (VIN-VOUT) VMAX, IOUT = 10mA VOUT 5V Min. -1.225 Typ -1.250 Max. -1.275 Units V * -1.200 -1.250 0.010 -1.300 0.020 0.050 25 0.5 50 1.0 0.02 VOUT VIN Line Regulation (2) * %/V mV % mV % %/W dB 0.020 15 0.3 VOUT IOUT Load Regulation (2)(3) 10mA IOUT IMAX VOUT 5V VOUT 5V VOUT 5V * * 20 0.3 0.002 60 66 77 65 0.5 2 3 2.5 1.2 1.5 0.24 0.2 2.2 0.4 0.4 0.6 0.3 0.003 Thermal Regulation Ripple Rejection IADJ Adjust Pin Current VIN = -7.92V, IOUT = 1.5A, PD = 10W, TA = 25C, 10ms Pulse VOUT = -10V f = 120Hz CADJ = 0 CADJ = 10F * * 10mA IOUT IMAX 100 5 5 6 5 3 3.2 A * * * * * * * * * IADJ Adjust Pin Current Change 3V (VIN-VOUT) 40V 3V (VIN-VOUT) 50V (HV Series) IMIN Minimum Load Current (VIN - VOUT) 40V (VIN - VOUT) 10V (VIN - VOUT) 15V mA ICL Current Limit (VIN - VOUT) = 40V (VIN - VOUT) = 50V (HV Series) A 0.8 VOUT TEMP VOUT TIME en Temperature Stability Long Term Stability RMS Output Noise (% of VOUT) TA = 125C, 1000Hrs TA = 25C, 10Hz f 10KHz 1.0 % Notes The denotes the specifications which apply over the full operating temperature range. (1) (2) Test conditions unless otherwise stated: VIN - VOUT = 5V, IOUT = 0.5A, PMAX = 10W, IMAX = 1.5A Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to heating effects are covered under thermal regulation specifications. Load regulation is measured at the junction of the wide and narrow portion of the output lead. VMAX = 40V for LM137, IP137, LM137A, IP137A VMAX = 50V for LM137HV, IP137HV, LM137AHV, IP137AHV (3) Coventry Road, Lutterworth, Leicestershire, LE17 4JB Semelab Limited Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales@semelab-tt.com Website: http://www.semelab-tt.com Document Number 8211 Issue 2 Page 2 of 5 NEGATIVE ADJUSTABLE VOLTAGE REGULATOR ELECTRICAL CHARACTERISTICS(1)(3) (TC = 25C unless otherwise stated) LM137A, IP137A, LM137AHV, IP137AHV Symbols VREF Parameters Reference Voltage Test Conditions IOUT = 10mA 10mA IOUT IMAX, P PMAX, 3V (VIN-VOUT) VMAX 3V (VIN-VOUT) VMAX, IOUT = 10mA VOUT 5V Min. -1.238 Typ -1.250 Max. -1.262 Units V -1.220 -1.250 0.005 -1.280 0.010 0.030 25 0.5 50 1.0 0.02 mV % mV % %/W VOUT VIN Line Regulation (2) %/V 0.010 5 0.1 VOUT IOUT Load Regulation (2)(3) 10mA IOUT IMAX VOUT 5V VOUT 5V VOUT 5V 10 0.2 0.002 60 70 66 80 65 0.2 1.0 2 2.5 1.2 1.5 0.24 0.2 2.2 0.4 0.4 0.6 0.3 0.003 Thermal Regulation VIN = -7.92V, IOUT = 1.5A, PD = 10W, TA = 25C, 10ms Pulse VOUT = -10V f = 120Hz CADJ = 0 CADJ = 10F Ripple Rejection IADJ Adjust Pin Current dB 100 2 5 6 5 3 3.2 1.0 0.8 1.5 1.0 % A mA A 10mA IOUT IMAX IADJ Adjust Pin Current Change 3V (VIN-VOUT) 40V 3V (VIN-VOUT) 50V (HV Series) IMIN Minimum Load Current (VIN - VOUT) 40V (VIN - VOUT) 10V (VIN - VOUT) 15V ICL Current Limit (VIN - VOUT) = 40V (VIN - VOUT) = 50V (HV Series) VOUT TEMP VOUT TIME en Temperature Stability Long Term Stability RMS Output Noise (% of VOUT) TA = 125C, 1000Hrs TA = 25C, 10Hz f 10KHz Notes The denotes the specifications which apply over the full operating temperature range. (1) (2) Test conditions unless otherwise stated: VIN - VOUT = 5V, IOUT = 0.5A, PMAX = 10W, IMAX = 1.5A Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to heating effects are covered under thermal regulation specifications. Load regulation is measured at the junction of the wide and narrow portion of the output lead. VMAX = 40V for LM137, IP137, LM137A, IP137A VMAX = 50V for LM137HV, IP137HV, LM137AHV, IP137AHV (3) Coventry Road, Lutterworth, Leicestershire, LE17 4JB Semelab Limited Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales@semelab-tt.com Website: http://www.semelab-tt.com Document Number 8211 Issue 2 Page 3 of 5 NEGATIVE ADJUSTABLE VOLTAGE REGULATOR APPLICATIONS INFORMATION High Stability Regulator The output stability, load regulation, line regulation, thermal regulation, temperature drift, long term drift, and noise, can be improved by a factor of 6.6 over the standard regulator configuration. This assumes a zener has 20PPM/C maximum drift and about 10 times lower noise than the regulator. Multiple Tracking Regulators In the application shown below, regulator #2 to "N" will track regulator #1 to within 24mV initially, and to 60mV over all load line, and temperature conditions. If any regulator output is shorted to ground, all other outputs will drop to -2V. Load regulation of regulators #2 to "N" will be improved by VOUT / 1.25V compared to a standard, so regulator #1 should be the one which has the lowest load current. C3 10F R2 * 2F R2 7V SOLID TANTALUM R1 1k 1% 1F ADJ -VIN VIN V OUT REG #1 1N4002 C1 1F SOLID TANTALUM R1 120 -VOUT1 R3 1.5k 1% ADJ -V IN V IN V OUT IP137 IP137 ( VOUT ) - 908 * R2 = 9.08 x 10 -3 -V OUT 1F 2F 1N4002 IP137 IP137 ADJ V IN SOLID TANTALUM -VOUT2 V REG #2 OUT IP137 IP137 Dual Tracking Supply IP137 IP137 +V IN V IN ADJ R1** 100 1% V OUT +V 2F 1N4002 1F ADJ SOLID TANTALUM -VOUT N OUT V IN V OUT REG #N * 2.2 F D1 1N4002 IP137 IP137 10F R2 5k 1% R3 5k Current Regulator C1 1F SOLID TANATALUM V OUT RS 1.25 V RS I (+) 10F R4 5k 1% 2.2 F * R5** 100 1% ADJ -V IN VIN V OUT ADJ D2 1N4002 (-) V IN IP137 IP137 -VOUT I = 65A + 0.8 R S 250 IP137 IP137 * Solid Tantalum ** R1 & R5 maybe trimmed slightly to improve tracking Coventry Road, Lutterworth, Leicestershire, LE17 4JB Semelab Limited Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales@semelab-tt.com Website: http://www.semelab-tt.com Document Number 8211 Issue 2 Page 4 of 5 NEGATIVE ADJUSTABLE VOLTAGE REGULATOR MECHANICAL DATA Dimensions in mm (inches) 0.89 (0.035) min. 3.70 (0.146) 3.41 (0.134) 3.70 (0.146) 3.41 (0.134) 3.60 (0.142) Max. 4.14 (0.163) 3.84 (0.151) 1 3 0.76 (0.030) min. 10.69 (0.421) 10.39 (0.409) 2 9.67 (0.381) 9.38 (0.369) 11.58 (0.456) 11.28 (0.444) 16.02 (0.631) 15.73 (0.619) 0.50 (0.020) 0.26 (0.010) SMD1 (TO276AB) Pin 1 = ADJ. Pin 2 = VIN Pin 3 = VOUT Coventry Road, Lutterworth, Leicestershire, LE17 4JB Semelab Limited Telephone +44 (0) 1455 556565 Fax +44 (0) 1455 552612 Email: sales@semelab-tt.com Website: http://www.semelab-tt.com Document Number 8211 Issue 2 Page 5 of 5 |
Price & Availability of LM137ASMD |
|
|
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] |