A8182SL

8182 INFORMATION DATA SHEET PRELIMINARY LOW-DROPOUT, (Subject to change without notice) 3 V REGULATOR November 14, 1994 8182 LOW-DROPOUT, 3 V REGULATOR — HIGH EFFICIENCY Designed specifically to meet the requirement for extended operation of battery-powered equipment such as cordless and cellular telephones, the A8182SL voltage regulator offers the reduced dropout voltage and quiescent current essential for maximum battery life. Applicable also to palmtop computers and personal data assistants, the device delivers a regulated 3 V output at up to 150 mA. Data Sheet 27468.2 OUT IN ENABLE GND 1 2 3 3V 8 7 6 OUT IN COMP RESET VR 4 5 Input Voltage, VI . . . . . . . . . . . . . . 10 V Output Current, IO . . . . . . . . . 150 mA* Enable Input Voltage, VE . . . . . . . . . . VI Reset Output Voltage, VOR . . . . . . . . VI Reset Output Current, IOR . . . . 1.0 mA Operating Temperature Range, TA . . . . . . . . . . . . . -20°C to +85°C Junction Temperature, TJ . . . +150°C† Storage Temperature Range, TS . . . . . . . . . . . . -40°C to +150°C * Output current rating is limited by input voltage, duty cycle, and ambient temperature. Under any set of conditions, do not exceed a junction temperature of +150°C. See next page. D EN U RE IN E TF NE OR CR SO I DF — Dwg. PS-020 A PMOS pass element provides a typical dropout voltage of only 85 mV at 60 mA of load current. The low dropout voltage permits deeper battery discharge before output regulation is lost. Furthermore, quiescent current does not increase as the dropout voltage is approached, an ideal feature in standby/resume power systems where data integrity is crucial. Regulator accuracy and excellent temperature characteristics are provided by a bandgap reference. An ENABLE input and RESET output gives the designer complete control over power up, standby, or power down. P O R D U T C N This device is supplied in an 8-lead small-outline plastic package (SOIC) for surface-mount applications. The A8182SL is rated for operation over a temperature range of -20°C to +85°C. E C O Y L FEATURES AND BENEFITS s High Efficiency Provides Extended Battery Life s 85 mV Typical Dropout Voltage at IO = 60 mA s 46 µA Typical Quiescent Current at VI = 6 V Less than 1 µA “Sleep” Current s Up to 150 mA Output Current s CMOS-Compatible ON/OFF Control For Power-Up, Standby, or Shutdown s Internal Thermal Protection s Surface-Mount Package ABSOLUTE MAXIMUM RATINGS APPLICATIONS s s s s Cordless and Cellular Telephones Personal Data Assistants Personal Communicators Palmtop Computers † Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided. Always order by complete part number: A8182SL . 8182 LOW-DROPOUT, 3 V REGULATOR FUNCTIONAL BLOCK DIAGRAM IN IN 7 2 8 1 OUT OUT BIAS DRIVE ERROR AMP 1.23 V BANDGAP REF. 6 COMP – 5 THERMAL PROTECT. RESET ENABLE 3 ENABLE + 4 GND Dwg. FS-012-2 For proper operation, terminals 1 and 8 should be externally connected together, terminals 2 and 7 should be externally connected together. MAXIMUM ALLOWABLE OUTPUT CURRENT with device mounted on 2.24" x 2.24" (56.9 mm x 56.9 mm) solder-coated copper-clad board in still air. Maximum Allowable Output Current in Milliamperes with VI = 8 V, TJ = 150°C, Period ≤10 s* dc (Duty Cycle) TA 25°C 50°C 70°C 85°C 100% 150 150 145 120 90% 150 150 150 130 80% 150 150 150 150 70% 150 150 150 150 60% 150 150 150 150 50% 150 150 150 150 40% 150 150 150 150 30% 150 150 150 150 20% 150 150 150 150 * IO = (TJ - TA)/([VI - VO] RθJA • dc) = (150 - TA)/(5 • 108 • dc) Output current rating can be increased (to 150 mA maximum) by heat sinking or reducing the input voltage. Conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 W Copyright © 1994 Allegro MicroSystems, Inc. 8182 LOW-DROPOUT, 3 V REGULATOR ELECTRICAL CHARACTERISTICS at TA = +25°C (unless otherwise noted). Limits Characteristic Output Voltage Symbol VO Test Conditions 4 V ≤ VI ≤ 8 V, 10 µA ≤ IO ≤ 100 mA TA = +25°C -20°C ≤ TA ≤ +85°C Min. 2.95 2.90 2.70 — — — — — — — — — — — 2.0 — — 1.20 — 12 — — — — 150 Mounted on 2.24" x 2.24" solder-coated copper-clad board in still air — Typ. 3.00 3.00 — — 7.0 5.5 12 11 8.0 85 175 46 50 0.05 — — — 1.23 — 34 -25 -0.5 — 100 — 108 Max. 3.05 3.10 — ±0.5 14 11 30 25 20 150 TBD 60 65 1.0 — 0.8 ±0.1 1.30 ±0.5 50 TBD -2.5 2.0 400 — — Units V V V mV/°C mV mV mV mV mV mV mV µA µA µA V V µA V mV/°C mV nA nA/°C µA mV °C °C/W VI = 3 V, IO = 60 mA, -20°C ≤ TA ≤ +85°C Output Volt. Temp. Coeff. Line Regulation αVO ∆VO(∆VI) VI = 6 V, IO = 10 mA 6 V ≤ VI ≤ 8 V, IO = 1 mA 4 V ≤ VI ≤ 6 V, IO = 1 mA Load Regulation ∆VO(∆IO) 1 mA ≤ IO ≤ 100 mA, VI = 8 V 1 mA ≤ IO ≤ 100 mA, VI = 6 V 1 mA ≤ IO ≤ 100 mA, VI = 4 V Dropout Voltage VImin - VO IO = 60 mA IO = 125 mA* Quiescent Current (GND terminal current) IQ(off) ENABLE Input Voltage VEH VEL ENABLE Input Current COMP Threshold Voltage COMP Threshold Volt. TC COMP Threshold Hys. COMP Input Current COMP Input Current TC RESET Leakage Current RESET Output Voltage Thermal Shutdown Temp. Thermal Resistance IE VC(t) αVC VC(hys) IC αIC IOR VOR TJ RθJA IQ VI = 6 V, 1 mA ≤ IO ≤ 100 mA, VE ≥ 2.0 V VI = 8 V, 1 mA ≤ IO ≤ 100 mA, VE ≥ 2.0 V 4 V ≤ VI ≤ 8 V, VE ≤ 0.8 V 4 V ≤ VI ≤ 8 V, -20°C ≤ TA ≤ +85°C Output ON Output OFF TA ≤ +85°C, VE = VI = 8 V 4 V ≤ VI ≤ 8 V, VC increasing from 0 4 V ≤ VI ≤ 8 V 4 V ≤ VI ≤ 8 V 0 V ≤ VC ≤ VO 4 V ≤ VI ≤ 8 V VOR = VI = 10 V, TA = +85°C IOR = 500 µA Typical values are at TA = +25°C and are given for circuit design information only. * Pulse test (≤50 ms). See previous page for duty cycle limitations. 8182 LOW-DROPOUT, 3 V REGULATOR TYPICAL CHARACTERISTICS LOAD REGULATION 3.06 3.06 TA = -20°C 50 mA INTERVALS LINE REGULATION 3.04 3.04 OUTPUT VOLTAGE in VOLTS 3.02 OUTPUT VOLTAGE in VOLTS 3.02 3.00 VI = 4 V 3.00 I 2.98 IO = 100 mA 2.96 O = 0 mA 2.98 2.96 TA = -20°C 1 V INTERVALS VI = 8 V 2.94 2.94 2.92 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-052 2.92 2.0 3.0 4.0 5.0 6.0 7.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-053 3.06 3.06 TA = 25°C 50 mA INTERVALS 3.04 3.04 OUTPUT VOLTAGE in VOLTS 3.02 VI = 4 V 3.00 OUTPUT VOLTAGE in VOLTS 3.02 I O = 0 mA 3.00 I 2.98 O = 100 mA 2.98 V =8V I 2.96 TA = 25°C 1 V INTERVALS 2.96 2.94 2.94 2.92 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-052-1 2.92 2.0 3.0 4.0 5.0 6.0 7.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-053-1 CAUTION: Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at high output currents. See Maximum Allowable Output Current table. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 8182 LOW-DROPOUT, 3 V REGULATOR TYPICAL CHARACTERISTICS (cont’d) LOAD REGULATION 3.06 LINE REGULATION 3.06 TA = 85°C 50 mA INTERVALS 3.04 3.04 OUTPUT VOLTAGE in VOLTS 3.02 OUTPUT VOLTAGE in VOLTS VI = 4 V 3.02 IO = 0 mA 3.00 3.00 I O = 100 mA 2.98 V =8V I 2.98 2.96 TA = 85°C 1 V INTERVALS 2.96 2.94 2.94 2.92 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-052-2 2.92 2.0 3.0 4.0 5.0 6.0 7.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-053-2 OUTPUT VOLTAGE 3.5 3.0 OUTPUT VOLTAGE in VOLTS OUTPUT VOLTAGE in VOLTS VI = 6 V 3.01 IO = 10 mA 2.5 2.0 3.00 1.5 I O = 10 µA - 100 mA TA = 25°C 2.99 1.0 2.98 0.5 0 0 1.0 2.0 3.0 INPUT VOLTAGE in VOLTS U N D EF IN ED 4.0 -50 0 +50 +100 AMBIENT TEMPERATURE in °C Dwg. GP-056-1 Dwg. GP-050 CAUTION: Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at high output currents. See Maximum Allowable Output Current table. 8182 LOW-DROPOUT, 3 V REGULATOR TYPICAL CHARACTERISTICS (cont’d) QUIESCENT (GROUND TERMINAL) CURRENT 60 QUIESCENT (GROUND TERMINAL) CURRENT in µA 50 QUIESCENT (GROUND TERMINAL) CURRENT in µA IO = 1 – 100 mA 50 VI =6V 48 I = 10 mA O VE ≥ 2 V 40 TA = -20°C 30 46 20 TA = 25°C TA = 85°C 44 10 -50 0 +50 +100 0 0 2.0 4.0 6.0 8.0 INPUT VOLTAGE in VOLTS AMBIENT TEMPERATURE in °C Dwg. GP-051 Dwg. GP-055 COMPARATOR VOLTAGE +V DROPOUT VOLTAGE 0.25 RESET OUTPUT VOLTAGE in VOLTS 0.20 DROPOUT VOLTAGE in VOLTS TA = -20°C T = 25°C A T = 85°C A 0.15 T A = 85°C T A = 25°C T A = -20°C 0.10 V =6V I I = 10 mA O 0.05 0 1.22 1.24 1.26 1.28 COMPARATOR INPUT VOLTAGE in VOLTS Dwg. GP-057 0 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-054 CAUTION: Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at high output currents. See Maximum Allowable Output Current table. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 8182 LOW-DROPOUT, 3 V REGULATOR TYPICAL CHARACTERISTICS (concluded) LOAD TRANSIENT PERFORMANCE VI = 3.2 V to 6.2 V, CO = 1 µF, TA = 25°C ENABLE TRANSIENT PERFORMANCE VI = 3.2 V to 6.2 V, CO = 1 µF, IO = 60 mA, TA = 25°C 3.5 V VO 3.0 V 2.5 V