MICROCIRCUIT DATA SHEET Original Creation Date: 08/01/95 Last Update Date: 05/19/98 Last Major Revision Date: 11/11/96 MNLP2951-X REV 1B1 ADJUSTABLE MICROPOWER VOLTAGE REGULATORS General Description The LP2951 is a micropower voltage regulator with very low dropout voltage (typ. 40 mV at light loads and 380 mV at 100 mA). It is ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP2951 increases only slightly in dropout, prolonging battery life. An attractive feature is an error flag output which warns of a low output voltage, often due to falling battery voltage on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V output or programmed from 1.24V to 29V with an external pair of resistors. Careful design of the LP2951 has minimized all contributions to the error budget. This includes a tight initial tolerance(0.5% typ.), extremely good load and line regulation (0.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference. Industry Part Number NS Part Numbers LP2951 LP2951E/883* LP2951H/883** LP2951J/883*** LP2951WG/883**** Prime Die LP2951 Controlling Document See Features Page Processing Subgrp Description MIL-STD-883, Method 5004 1 2 3 4 5 6 7 8A 8B 9 10 11 Quality Conformance Inspection MIL-STD-883, Method 5005 1 Static tests at Static tests at Static tests at Dynamic tests at Dynamic tests at Dynamic tests at Functional tests at Functional tests at Functional tests at Switching tests at Switching tests at Switching tests at Temp ( oC) +25 +125 -55 +25 +125 -55 +25 +125 -55 +25 +125 -55 MICROCIRCUIT DATA SHEET MNLP2951-X REV 1B1 Features - Error flag warns of output dropout. Logic-controlled electronic shutdown. Output programmable from 1.24 to 29V. SMD : 5962-38705M2A*, MGA**, MPA***, MXA**** 2 MICROCIRCUIT DATA SHEET MNLP2951-X REV 1B1 (Absolute Maximum Ratings) (Note 1) Power Dissipation METAL CAN CERDIP LCC CERAMIC SOIC Storage Temperature Range 675mW at +25 C 1.0W at +25 C 1.25W at +25 C 1.0W at +25 C -65 C to +150 C Operating Ambient Temperature Range -55 C to +125 C Absolute Maximum Junction Temperature +160 C Input Supply Voltage -0.3 to +30V Feedback Input Voltage (Note 3, 4) -1.5 to +30V Shutdown Input Voltage (Note 3) -0.3 to +30V Error Comparator Out. Voltage (Note 3) -0.3 to +30V Lead Temperature (Soldering, 10 seconds) Thermal Resistance ThetaJA METAL CAN (Still Air (500LF/Min CERDIP (Still Air (500LF/Min LCC (Still Air (500LF/Min CERAMIC SOIC (Still Air (500LF/Min 260 C @ 0.5W) Air flow @ 0.5W) Air flow @ 0.5W) Air flow @ 0.5W) Air flow @ 0.5W) @ 0.5W) @ 0.5W) @ 0.5W) ThetaJC METAL CAN CERDIP LCC CERAMIC SOIC Package Weight (Typical) ESD Rating 163 95 131 75 95 66 215 130 C/W C/W C/W C/W C/W C/W C/W C/W 51 21 24 24 C/W C/W C/W C/W TBD 500V Note 1: Note 2: Note 3: Note 4: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax - TA)/ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower. May exceed input supply voltage. When used in dual-supply systems where the output terminal uses loads returned to a negative supply, the output voltage should be diode-clamped to ground. 3 MICROCIRCUIT DATA SHEET MNLP2951-X REV 1B1 Electrical Characteristics DC PARAMETERS (The following conditions apply to all the following parameters, unless otherwise specified.) DC: Vin = 6V, Il = 100uA, Cl = 1uF, Vout = 5V, Vshutdown = < 0.8V SYMBOL PARAMETER CONDITIONS NOTES Load Regulation Dropout Voltage MAX 4.975 5.025 V 1 4.94 5.06 V 2, 3 6V < Vin < 30V -5 5 mV 1 Il = 1mA -25 25 mV 2, 3 100uA < Il < 100mA -5 5 mV 1 100uA < Il < 100mA -25 25 mV 2, 3 1, 2 450 mV 1 1, 2 600 mV 2, 3 1, 2 80 mV 1 1, 2 150 mV 2, 3 Ground Current 0 15 mA 1 0 20 mA 2, 3 0 12 mA 1 0 14 mA 2, 3 0 30 uA 1 0 50 uA 2, 3 0 120 uA 1 0 140 uA 2, 3 0 120 uA 1 0 140 uA 2, 3 0 170 uA 1 0 200 uA 2, 3 1, 3 95 mV 1 1, 3 140 mV 2, 3 Il = 100mA Vout = 15V, Il = 100mA Il = 100mA Vin = 6-30V Quiescent Ground Current Il = 10uA, Vout = 15V Dropout Ground Current Vin = 4.5V Comparator Lower Threshold Comparator Upper Threshold Thermal Regulation ISC Current Limit UNIT SUBGROUPS MIN Output Voltage Line Regulation PINNAME 1, 3 40 mV 1 1, 3 25 mV 2, 3 Vin = 30V, Il = 50mA, T = 2mS -12.5 12.5 mV 1 Vin = 30V, Il = 50mA, T = 10mS -12.5 12.5 mV 1 Vout = 0V 0 200 mA 1 0 220 mA 2, 3 4 MICROCIRCUIT DATA SHEET MNLP2951-X REV 1B1 Electrical Characteristics DC PARAMETERS(Continued) (The following conditions apply to all the following parameters, unless otherwise specified.) DC: Vin = 6V, Il = 100uA, Cl = 1uF, Vout = 5V, Vshutdown = < 0.8V SYMBOL PARAMETER CONDITIONS NOTES Reference Output Regulation MAX 1.22 1.25 V 1 1.20 1.26 V 2, 3 2.3V < Vin < 30V -1.9 1.9 mV 1 2.3V < Vin < 30V -10 10 mV 2, 3 Vref < Vout < (Vin-1V), Vin = 30V -1.2 1.2 mV 1 Vref < Vout < (Vin-1V), Vin = 30V -5 5 mV 2, 3 -40 40 nA 1 -60 60 nA 2, 3 -1 1 uA 1 -2 2 uA 2, 3 0 250 mV 1 0 400 mV 2, 3 0 50 uA 1 0 100 uA 2, 3 0 600 uA 1 0 750 uA 2, 3 -10 10 uA 1 -20 20 uA 2, 3 0.6 V 1, 2, 3 V 1, 2, 3 Feedback Bias Current Comparator Off Leakage Comparator Output Low Voltage Shutdown Input Current Vo = 30V Vin = 4.5V, Iol = 400uA Vshutdown = 2.4V Vshutdown = 30V Output Leakage Current in Shutdown Vshutdown = 1.5V, Vin = 30V Shutdown Input Logic Voltage (LOW) 1 (HIGH) 1 Note 1: Note 2: Note 3: 2 UNIT SUBGROUPS MIN Reference Voltage Reference Line Regulation PINNAME Functional test only. Dropout voltage is defined as the input to output differential at which the output drops 100mV below its nominal values measured at 1V differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account. Comparator thresholds are expressed in terms of a voltage differential at the Feedback terminal below the nominal reference voltage measured at Vin = 6V. To express these thresholds in terms of output voltage change, multiply by the error amplifer Gain=Vout/Vin=(R1 + R2)R2. For example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV X 5V/1.235V = 384mV. Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occuring at typically 5% below nominal, 7.5% guaranteed. 5 MICROCIRCUIT DATA SHEET MNLP2951-X REV 1B1 Graphics and Diagrams GRAPHICS# DESCRIPTION 05810HRA2 METAL CAN (H), TO-99, 8LD, .200 DIA P.C. (B/I CKT) 06059HRA2 CERDIP (J), 8 LEAD (B/I CKT) 06146HRA2 LCC (E), TYPE C, 20 TERMINAL(B/I CKT) 06341HRA1 CERPACK (W), 10 LEAD (B/I CKT) E20ARE LCC (E), TYPE C, 20 TERMINAL(P/P DWG) H08CRF METAL CAN (H), TO-99, 8LD, .200 DIA P.C. (P/P DWG) J08ARL CERDIP (J), 8 LEAD (P/P DWG) P000205A METAL CAN (H), 8 LEAD (PINOUT) P000206A CERDIP (J), 8 LEAD (PINOUT) P000251B LCC (E), 20 LEAD (PINOUT) P000374A CERAMIC SOIC (WG), 10 LEAD (PINOUT) WG10ARC CERAMIC SOIC (WG), 10 LEAD (P/P DWG) See attached graphics following this page. 6 N N N/C OUTPUT N/C 1 20 19 N/C 5 17 FEEDBACK 6 16 N/C 7 15 5V TAP 8 14 N/C 4 SENSE N/C N/C 2 N/C 18 N/C SHUTDOWN 3 INPUT 9 10 11 N/C GND N/C 12 13 ERROR N/C LP2951E 20 - LEAD LCC CONNECTION DIAGRAM TOP VIEW P000251B N MIL/AEROSPACE OPERATIONS 2900 SEMICONDUCTOR DRIVE SANTA CLARA, CA 95050 INPUT OUTPUT 1 10 SENSE 2 9 FEEDBACK SHUTDOWN 3 8 VTAP GND 4 7 ERROR N/C 5 6 N/C LP2951WG 10 - LEAD CERAMIC SOIC CONNECTION DIAGRAM TOP VIEW P000374A N MIL/AEROSPACE OPERATIONS 2900 SEMICONDUCTOR DRIVE SANTA CLARA, CA 95050 MICROCIRCUIT DATA SHEET MNLP2951-X REV 1B1 Revision History Rev ECN # 1B1 M0002864 05/19/98 Rel Date Originator Changes Barbara Lopez Update MDS: MNLP2951-X Rev. 1A0 to MNLP2951-X Rev. 1B1. Added WG package to SMD number and NSID. Updated power dissipation to reflect all packages. Updated thermal resistance to reflect all packages. Updated ESD rating. Updated Absolute junction temperature. Added graphics for all packages. Added Package Weights. 7