A8183SLU

8183 LOW-DROPOUT, 8183 LOW-DROPOUT, 3 V REGULATOR 3 V REGULA— HIGH EFFICIENCY Designed specifically to meet the requirement for extended operation of battery-powered equipment such as cordless and cellular telephones, the A8183SLU 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, continuous 3 V output at up to 75 mA under normal operating conditions, or to 150 mA (transient) under worst-case conditions. Data Sheet 27468.4 OUT SUB IN TOR 6 5 SUB 4 VR Input Voltage, VI . . . . . . . . . . . . . . 10 V Output Current, IO . . . . . . . . . 150 mA* Enable Input Voltage, VE . . . . . . . . . . VI 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 — 1 2 3 SUB GND ENABLE SUB A PMOS pass element provides a typical dropout voltage of only 90 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 gives the designer complete control over power up, standby, or power down. P O R D 3V U T C N E C O Y L Dwg. PS-021 This device is supplied in a 6-lead small-outline plastic package (similar to the SOT-89/TO-243AA) for surface-mount applications. The A8183SLU is rated for operation over a temperature range of -20°C to +85°C. FEATURES AND BENEFITS s High Efficiency Provides Extended Battery Life s 90 mV Typical Dropout Voltage at IO = 60 mA s 45 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 † Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided. Cordless and Cellular Telephones Personal Data Assistants Personal Communicators Palmtop Computers . Always order by complete part number: A8183SLU 8183 LOW-DROPOUT, 3 V REGULATOR FUNCTIONAL BLOCK DIAGRAM IN 4 6 OUT BIAS DRIVE ERROR AMP THERMAL PROTECT. ENABLE ENABLE 3 BANDGAP REF. 2 5 SUB SUB 1 GND SUB Dwg. FS-012-3 Terminal numbering is in accordance with EIA/JEDEC convention. Where EIAJ conventions apply, the tab is not numbered, resulting in terminal 6 being designated terminal 5. For proper operation, terminals 1 and 2 must 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% 95 75 60 50 90% 105 85 65 55 80% 120 95 75 60 70% 135 110 85 70 60% 150 125 100 80 50% 150 150 120 100 40% 150 150 150 125 30% 150 150 150 150 20% 150 150 150 150 * IO = (TJ - TA)/([VI - VO] RθJA • dc) = (150 - TA)/(5 • 258 • 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. 8183 LOW-DROPOUT, ELECTRICAL CHARACTERISTICS at TA = +25°C (unless otherwise noted). 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 — — 150 Mounted on 2.24" x 2.24" solder-coated copper-clad board in still air — Typ. 3.00 3.00 — — 4.0 9.5 19 14 8.0 90 190 45 50 — — — — — 258 3 V REGULALimits Max. 3.05 3.10 — ±1.0 10 18 30 25 20 150 300 60 65 1.0 — 0.8 ±0.1 — — Units V V V mV/°C mV mV mV mV mV mV mV µA µA µA V V µA °C °C/W TOR 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 Thermal Shutdown Temp. Thermal Resistance IE 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 Typical values are at TA = +25°C and are given for circuit design information only. * Pulse test (≤20 ms). See previous page for duty cycle limitations. 8183 LOW-DROPOUT, 3 V REGULATOR TYPICAL CHARACTERISTICS LOAD REGULATION 3.06 LINE REGULATION 3.06 TA = -20°C 50 mA INTERVALS 3.04 3.04 OUTPUT VOLTAGE in VOLTS OUTPUT VOLTAGE in VOLTS 3.02 VI = 8 V 3.00 VI = 6 V 3.02 I O = 0 mA IO = 100 mA 3.00 2.98 V =4V I 2.98 2.96 TA = -20°C 2.96 2.94 2.94 2.92 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-052-3 2.92 2.0 3.0 4.0 5.0 6.0 7.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-053-3 3.06 3.06 TA = 25°C 50 mA INTERVALS 3.04 3.04 OUTPUT VOLTAGE in VOLTS 3.02 OUTPUT VOLTAGE in VOLTS 3.02 IO = 0 mA 3.00 VI = 8 V 3.00 2.98 V =4V I 2.98 IO = 100 mA 2.96 TA = 25°C 2 V INTERVALS 2.96 2.94 2.94 2.92 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-052-4 2.92 2.0 3.0 4.0 5.0 6.0 7.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-053-4 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 8183 LOW-DROPOUT, TYPICAL CHARACTERISTICS (cont’d) LOAD REGULATION 3 V REGULA- LINE REGULATION 3.06 TA = 85°C 50 mA INTERVALS TOR 3.06 3.04 3.04 OUTPUT VOLTAGE in VOLTS OUTPUT VOLTAGE in VOLTS 3.02 3.02 3.00 VI = 8 V 2.98 3.00 IO = 0 mA 2.98 2.96 TA = 85°C 2 V INTERVALS VI = 4 V 2.96 IO = 100 mA 2.94 2.94 2.92 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-052-5 2.92 2.0 3.0 4.0 5.0 6.0 7.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-053-5 OUTPUT VOLTAGE 3.5 3.0 OUTPUT VOLTAGE in VOLTS 2.5 OUTPUT VOLTAGE in VOLTS VI = 6 V 3.01 IO = 0 2.0 3.00 1.5 I O = 0 - 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 4.0 -50 0 +50 +100 AMBIENT TEMPERATURE in °C Dwg. GP-059 Dwg. GP-050-1 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. 8183 LOW-DROPOUT, 3 V REGULATOR TYPICAL CHARACTERISTICS (cont’d) QUIESCENT (GROUND TERMINAL) CURRENT 60 QUIESCENT (GROUND TERMINAL) CURRENT in µA 50 VI =6V IO = 0 V ≥2V E QUIESCENT (GROUND TERMINAL) CURRENT in µA IO = 0 50 40 TA = 85°C 45 30 20 40 TA = 25°C TA = -20°C 10 35 -50 0 +50 +100 AMBIENT TEMPERATURE in °C Dwg. GP-051-1 0 0 2.0 4.0 6.0 8.0 INPUT VOLTAGE in VOLTS Dwg. GP-058 DROPOUT VOLTAGE 0.25 0.20 DROPOUT VOLTAGE in VOLTS TA = 85°C TA = 25°C TA = -20°C 0.15 0.10 0.05 0 0 25 50 75 100 125 150 OUTPUT CURRENT in mA Dwg. GP-054-1 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 8183 LOW-DROPOUT, TYPICAL CHARACTERISTICS (concluded) 3 V REGULA- TOR LOAD TRANSIENT PERFORMANCE VI = 3.2 V to 6.2 V, CO as specified, TA = 25°C ENABLE TRANSIENT PERFORMANCE VI = 3.2 V to 6.2 V, CO = 1 µF, TA = 25°C 3.25 V VO CO = 10 µF 3.0 V 2.75 V 3.5 V 3.0 V VO 0 VO C O = 1 µF 3.0 V 2.5 V