MAX8882EUTA5

19-1818; Rev 1; 10/01 Dual, Low-Noise, Low-Dropout, 160mA Linear Regulators in SOT23 Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ Two LDOs in Tiny SOT23 Up to 160mA Output Current (each LDO) 40µVRMS Output Noise (MAX8882) 72mV Dropout at 80mA Load Low 165µA Operating Supply Current 62dB PSRR (greater than 56dB to 100kHz) Independent Low-Power Shutdown Controls (MAX8883) ♦ Thermal-Overload and Short-Circuit Protection ♦ Output Current Limit Selector Guide VOUTA VOUTB MAX8882EUTJJ 2.85 2.85 AANR MAX8882EUTAQ 3.3 2.5 AAPW µP/DSP Core/IO Power MAX8882EUTA5 3.3 1.8 AARY Cellular and PCS Telephones MAX8882EUTQ5 2.5 1.8 AAPX PDAs and Palmtop Computers MAX8882EUTGG 3.0 3.0 AAZT Notebook Computers MAX8883EUTJJ 2.85 2.85 AANS Digital Cameras MAX8883EUTAQ 3.3 2.5 AAPY MAX8883EUTA5 3.3 1.8 AARZ MAX8883EUTQ5 2.5 1.8 AAPZ MAX8883EUTGG 3.0 3.0 AAZU ________________________Applications Hand-Held Instruments Pin Configurations PART TOP MARK ***Other combinations between 1.8V and 3.3V are available in 100mV increments. Contact factory for other versions. Minimum order quantity is 50,000 units. Ordering Information TOP VIEW OUTB 1 GND 2 6 MAX8882 5 PART SHUTDOWN TEMP RANGE PINPACKAGE MAX8882EUT_ _* Single -40°C to +85°C 6 SOT23-6 MAX8883EUT_ _* Dual -40°C to +85°C 6 SOT23-6 OUTA IN *See Selector Guide BP 3 4 Typical Operating Circuit SHDN SOT23-6 OUTA VIN 2.5V to 6.5V Pin Configurations continued at end of data sheet. 2.2µF VOUTA FIXED (1.8V to 3.3V) 2.2µF VOUTB FIXED (1.8V to 3.3V) MAX8882 MAX8883 OUTB SHDN_ IN 2.2µF GND (BP) 0.01µF ( ) ARE FOR MAX8882 ONLY. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX8882/MAX8883 General Description The MAX8882/MAX8883 dual, low-noise, low-dropout linear regulators operate from a +2.5V to +6.5V input and deliver up to 160mA each of continuous current. Both versions offer low output noise and low dropout of only 72mV at 80mA. Designed with an internal Pchannel MOSFET pass transistor, the MAX8882/ MAX8883 maintain a low 165µA supply current (both LDOs on), independent of the load current and dropout voltage. Other features include short-circuit protection and thermal-shutdown protection. The MAX8882 has a single shutdown input and provides an external reference bypass pin to improve noise performance. The MAX8883 includes two independent logic-controlled shutdown inputs. The MAX8882/MAX8883 are both available in a miniature 6-pin SOT23 package. MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear Regulators in SOT23 ABSOLUTE MAXIMUM RATINGS IN, SHDN, SHDNA, SHDNB, BP to GND...............-0.3V to +7.0V OUTA, OUTB to GND ..................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration.....................................Continuous Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 8.7mW/°C above +70°C)............695mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VIN = +3.6V, SHDN = SHDNA = SHDNB = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER CONDITIONS MIN Input Voltage Undervoltage Lockout Threshold TYP 2.5 VIN_ rising, hysteresis 40mV typical 2.15 2.25 MAX UNITS 6.5 V 2.40 V TA = +25°C, IOUT_ = 1mA -1 1 Output Voltage Accuracy IOUT_ = 1mA -2 2 -3 2 Maximum Output Current Continuous IOUT_ = 100µA to 160mA 160 Current Limit Ground Current Shutdown Supply Current SHDN_ Input Threshold SHDN_ Input Bias Current Dropout Voltage (Notes 2, 3) Line Regulation Output Voltage Noise 2 mA 160 550 No Load, VIN = 6.5V 165 IOUT_ = 80mA, both LDOs 170 SHDN_ = GND, TA = +25°C 0.01 SHDN_ = GND 0.1 VIH 265 1 1.6 VIL 0.4 SHDN_ = GND or IN, TA = +25°C 0 SHDN_ = GND or IN 100 0.05 IOUT_ = 1mA 1 IOUT_ = 40mA 36 IOUT_ = 80mA 72 144 0 0.2 VIN = (VOUT_ + 0.4V or 2.5V) to + 6.5V, IOUT_ = 1mA -0.2 % 10Hz to 100kHz, CBP = 0.01µF, COUT_ = 4.7µF, IOUT_ = 1mA MAX8882 40 10Hz to 100kHz, COUT_ = 4.7µF, IOUT_ = 10mA MAX8883 320 _______________________________________________________________________________________ mA µA µA V nA mV %/V µVRMS Dual, Low-Noise, Low-Dropout, 160mA Linear Regulators in SOT23 (VIN = +3.6V, SHDN = SHDNA = SHDNB = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER CONDITIONS MIN TYP 100Hz, CBP = 0.01µF, COUT_ = 4.7µF MAX8882 62 100Hz, COUT_ = 4.7µF MAX8883 60 MAX UNITS Output Voltage AC PSRR dB Thermal Shutdown Temperature 160 °C Thermal Shutdown Hysteresis 10 °C Note 1: All units are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design. Note 2: The dropout voltage is defined as VIN - VOUT when VIN = VOUT (NOM). Specification only applies when VOUT ≥ 2.5V. Note 3: See the Typical Operating Characteristics for guaranteed specifications at voltages other than 3.3V. Typical Operating Characteristics (VOUT_ = 2.85V, IOUT_ = 80mA, VIN = +3.6V, COUT_ = 2.2µF, CBP = 0.01µF, and CIN = 2.2µF, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. LOAD CURRENT NO LOAD 100 50 0 140 120 100 80 60 1 2 3 4 5 100 80 60 40 20 20 0 0 10 20 30 40 50 60 70 80 -40 -15 10 35 60 85 LOAD CURRENT (mA) TEMPERATURE (°C) DROPOUT VOLTAGE vs. LOAD CURRENT DROPOUT vs. VOUT OUTPUT VOLTAGE ACCURACY vs. TEMPERATURE DROPOUT (mV) 45 TA = -40°C GUARANTEED MAXIMUM 120 100 80 MEAN 60 15 20 30 40 50 LOAD CURRENT (mA) 60 70 80 0.8 0.6 0.4 0.2 0 -0.2 -0.4 40 -0.6 20 -0.8 0 0 1.0 MAX8882/83 toc06 160 140 TA = +85°C 30 180 OUTPUT VOLTAGE (%) 60 200 MAX8882/3 toc04 TA = +25°C 75 10 120 SUPPLY VOLTAGE (V) 90 0 80mA LOAD, BOTH OUTPUTS 140 40 6 MAX8882/3 toc03 160 0 0 DROPOUT VOLTAGE (mV) BOTH OUTPUTS LOADED 180 SUPPLY CURRENT (µA) 150 MAX8882/3 toc02 160 200 MAX8882/83 toc05 SUPPLY CURRENT (µA) 180 SUPPLY CURRENT (µA) 80mA LOAD, BOTH OUTPUTS 200 200 MAX8882/3 toc01 250 SUPPLY CURRENT vs. TEMPERATURE -1.0 2.5 2.7 2.9 VOUT (V) 3.1 3.3 -40 -25 -10 5 20 35 50 65 80 TEMPERATURE (°C) _______________________________________________________________________________________ 3 MAX8882/MAX8883 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VOUT_ = 2.85V, IOUT_ = 80mA, VIN = +3.6V, COUT_ = 2.2µF, CBP = 0.01µF, and CIN = 2.2µF, unless otherwise noted.) CHANNEL-TO-CHANNEL ISOLATION vs. FREQUENCY 60 40 30 20 10 0 100Ω LOAD 100 80 60 THERMAL COUPLING 40 CAPACITVE COUPLING 20 0 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 FREQUENCY (kHz) FREQUENCY (kHz) OUTPUT NOISE SPECTRAL DENSITY vs. FREQUENCY MAX8882 OUTPUT NOISE (10Hz to 100kHz) MAX8882/3 toc09 10000 1000 MAX8882/3 toc10 PSRR (dB) 50 120 MAX8882/3 toc08 100Ω LOAD CHANNEL-TO-CHANNEL ISOLATION (dB) 70 MAX8882/3 toc07 PSRR vs. FREQUENCY NOISE DENSITY (nV/√Hz) MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear Regulators in SOT23 1000 500µV/div (AC-COUPLED) VOUT_ 100 10 0.01 0.1 1 10 100 1000 1ms/div LOAD TRANSIENT (VIN = 3.35V, ILOAD = 0 TO 80mA) LINE TRANSIENT MAX8882/3 toc11 MAX8882/3 toc12 4.5V VIN 3.5V 20mV/div (AC-COUPLED) VOUT_ 1V/div 20mV/div (AC-COUPLED) VOUT_ 50mA/div ILOAD 0 50µs/div 4 10µs/div _______________________________________________________________________________________ Dual, Low-Noise, Low-Dropout, 160mA Linear Regulators in SOT23 LOAD TRANSIENT NEAR DROPOUT SHUTDOWN RESPONSE MAX8882/3 toc13 MAX8882/3 toc14 RLOAD = 100Ω 20mV/div VOUT OUTPUT VOLTAGE 20V/div 0 VIN = VOUT + 0.1V 50µA/div ILOAD 0 SHUTDOWN VOLTAGE 1V/div 0 10µs/div 1ms/div Pin Description PIN NAME FUNCTION 1 OUTB Regulator B Output. Sources up to 160mA continuous current. Bypass with a 2.2µF (