(MAX9025 - MAX9028) Beyond-the-Rails Comparators With/Without Reference

www.DataSheet4U.com 19-3241; Rev 0; 5/04 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference General Description The MAX9025–MAX9028 nanopower comparators in space-saving chip-scale (UCSP™) packages feature Beyond-the-Rails™ inputs and are guaranteed to operate down to +1.8V. The MAX9025/MAX9026 feature an on-board 1.236V ±1% reference and draw an ultra-low supply current of only 1µA, while the MAX9027/ MAX9028 (without reference) require just 0.6µA of supply current. These features make the MAX9025–MAX9028 family of comparators ideal for all 2-cell batterymonitoring/management applications. The unique design of the output stage limits supplycurrent surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX9025/MAX9027 have a push-pull output stage that sinks and sources current. Large internal-output drivers allow rail-to-rail output swing with loads up to 5mA. The MAX9026/MAX9028 have an open-drain output stage that makes them suitable for mixed-voltage system design. All devices are available in the miniature 6-bump UCSP packages. Refer to the MAX9117 data sheet for similar comparators in 5-pin SC70 packages and the MAX9017 data sheet for similar dual comparators in 8-pin SOT23 packages. Features ♦ Space-Saving UCSP Package (1mm x 1.52mm) ♦ Ultra-Low Supply Current 0.6µA (MAX9027/MAX9028) 1µA with Reference (MAX9025/MAX9026) ♦ Guaranteed to Operate Down to +1.8V ♦ Internal 1.236V ±1% Reference (MAX9025/MAX9026) ♦ Input Voltage Range Extends 200mV Beyond-the-Rails ♦ CMOS Push-Pull Output with ±5mA Drive Capability (MAX9025/MAX9027) ♦ Open-Drain Output Versions Available (MAX9026/MAX9028) ♦ Crowbar-Current-Free Switching ♦ Internal Hysteresis for Clean Switching ♦ No Phase Reversal for Overdriven Inputs MAX9025–MAX9028 Ordering Information PART MAX9025EBT-T TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C BUMPPACKAGE 6 UCSP-6 6 UCSP-6 6 UCSP-6 6 UCSP-6 TOP MARK ADB ADC ADD ADE Applications 2-Cell Battery Monitoring/Management Ultra-Low-Power Systems Mobile Communications Notebooks and PDAs Sensing at Ground or Supply Line Telemetry and Remote Systems Medical Instruments MAX9026EBT-T MAX9027EBT-T MAX9028EBT-T Pin Configurations TOP VIEW (BUMPS ON BOTTOM) B 1 A VCC IN+ Selector Guide PART MAX9025 MAX9026 MAX9027 MAX9028 INTERNAL REFERENCE Yes Yes No No OUTPUT TYPE Push-Pull Open-Drain Push-Pull Open-Drain SUPPLY CURRENT (µA) 1.0 1.0 0.6 0.6 3 INREF (VEE) MAX9025– MAX9028 2 OUT Typical Application Circuit appears at end of data sheet. Beyond-the-Rails and UCSP are trademarks of Maxim Integrated Products, Inc. VEE ( ) MAX9027/MAX9028 PINS UCSP ________________________________________________________________ Maxim Integrated Products 1 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. UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX9025–MAX9028 ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE)..................................................+6V Voltage Inputs (IN+, IN-, REF) .........(VEE - 0.3V) to (VCC + 0.3V) Output Voltage MAX9025/MAX9027 ....................(VEE - 0.3V) to (VCC + 0.3V) MAX9026/MAX9028 ..................................(VEE - 0.3V) to +6V Current into Input Pins ........................................................20mA Output Current..................................................................±50mA Output Short-Circuit Duration .................................................10s Continuous Power Dissipation (TA = +70°C) 6-Bump UCSP (derate 3.9mW/°C above +70°C)........308mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Bump Temperature (soldering) Reflow............................+235°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—MAX9025/MAX9026 (WITH REF) (VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range Supply Current SYMBOL VCC ICC VCC = 1.8V VCC = 5V TA = +25°C TA = TMIN to TMAX VEE 0.2 0.3 4 0.15 0.1 TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX 0.001 35 3 33 3 7 6 µs mA VCC = 5V VCC = 1.8V VCC = 5V VCC = 1.8V 57 250 56 250 1 2 1 350 450 200 300 350 450 200 300 1 µA mV mV CONDITIONS Inferred from the PSRR test MIN 1.8 0.8 1.0 TYP MAX 5.5 1.5 1.7 2.2 VCC + 0.2 5 10 V mV mV nA mV/V µA UNITS V IN+ Voltage Range Input Offset Voltage Input-Referred Hysteresis Input Bias Current Power-Supply Rejection Ratio VIN+ VOS VHB IB PSRR VCC VOH Inferred from output swing test (Note 2) (Note 3) TA = +25°C TA = TMIN to TMAX VCC = 1.8V to 5.5V MAX9025, VCC = 5V, ISOURCE = 6mA MAX9025, VCC = 1.8V, ISOURCE = 1mA VCC = 5V, ISINK = 6mA VCC = 1.8V, ISINK = 1mA TA = +25°C TA = TMIN to TMAX Output Voltage Swing High Output Voltage Swing Low VOL Output Leakage Current ILEAK MAX9026 only, VO = 5.5V Sourcing, VO = VEE Output Short-Circuit Current ISC Sinking, VO = VCC High-to-Low Propagation Delay (Note 4) tPD- VCC = 1.8V VCC = 5V 2 _______________________________________________________________________________________ UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ELECTRICAL CHARACTERISTICS—MAX9025/MAX9026 (WITH REF) (continued) (VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MAX9025 only Low-to-High Propagation Delay (Note 4) tPD+ MAX9026 only, RPULLUP = 100kΩ CL = 15pF TA = +25°C TA = TMIN to TMAX 1.224 1.205 40 CREF = 1nF BW = 10Hz to 100kHz BW = 10Hz to 6kHz 29 60 0.5 0.03 VCC = 1.8V VCC = 5V VCC = 1.8V VCC = 5V MIN TYP 11 28 12 31 1.6 0.2 1.2 1.236 1.248 1.267 µs µs ms V ppm/ °C µVRMS mV/V mV/ nA µs MAX UNITS MAX9025–MAX9028 Rise Time Fall Time Power-Up Time Reference Voltage Reference Voltage Temperature Coefficient Reference Output Voltage Noise Reference Line Regulation Reference Load Regulation tRISE tFALL tON VREF TCREF EN ∆VREF/ ∆VCC ∆VREF/ ∆IOUT MAX9025 only, CL = 15pF VCC = 1.8V to 5.5V ∆IOUT = 0nA to 100nA ELECTRICAL CHARACTERISTICS—MAX9027/MAX9028 (WITHOUT REF) (VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range Supply Current Input Common-Mode Voltage Range Input Offset Voltage Input-Referred Hysteresis Input Bias Current Power-Supply Rejection Ratio Common-Mode Rejection Ratio SYMBOL VCC ICC VCC = 1.8V VCC = 5V TA = +25°C TA = TMIN to TMAX VEE 0.2 0.3 CONDITIONS Inferred from the PSRR test MIN 1.8 0.45 0.6 TYP MAX 5.5 0.75 1.0 1.25 VCC + 0.2 5 mV TA = TMIN to TMAX 4 0.15 0.1 0.5 1 2 1 3 10 mV nA mV/V mV/V V µA UNITS V VCM Inferred from the CMRR test -0.2V ≤ VCM ≤ (VCC + 0.2V) (Note 2) TA = +25°C VOS VHB IB PSRR CMRR -0.2V ≤ VCM ≤ (VCC + 0.2V) (Note 3) TA = +25°C TA = TMIN to TMAX VCC = 1.8V to 5.5V (VEE - 0.2V) ≤ VCM ≤ (VCC + 0.2V) _______________________________________________________________________________________ 3 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX9025–MAX9028 ELECTRICAL CHARACTERISTICS—MAX9027/MAX9028 (WITHOUT REF) (continued) (VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MAX9027 only, VCC = 5V, ISOURCE = 5mA MAX9028 only, VCC = 1.8V, ISOURCE = 1mA VCC = 5V, ISINK = 5mA VCC = 1.8V, ISINK = 1mA TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX 0.001 35 3 33 3 16 14 15 40 16 45 1.6 0.2 1.2 µs µs ms µs µs mA VCC = 5V VCC = 1.8V VCC = 5V VCC = 1.8V VCC = 1.8V VCC = 5V MAX9027 only Low-to-High Propagation Delay (Note 4) tPD+ MAX9028 only VCC = 1.8V VCC = 5V VCC = 1.8V, RPULLUP = 100kΩ VCC = 5V, RPULLUP = 100kΩ Rise Time Fall Time Power-Up Time tRISE tFALL tON MAX9027 only, CL = 15pF CL = 15pF 56 191 58 MIN TYP 191 MAX 400 500 200 300 400 500 200 300 1 µA mV mV UNITS Output Voltage Swing High VCC - VOH Output Voltage Swing Low VOL Output Leakage Current ILEAK MAX9028 only, VO = 5.5V Sourcing, VO = VEE Output Short-Circuit Current ISC Sourcing, VO = VCC High-to-Low Propagation Delay (Note 4) tPD- Note 1: All specifications are 100% tested at TA = +25°C. Specification limits over temperature (TA = TMIN to TMAX) are guaranteed by design, not production tested. Note 2: VOS is defined as the center of the hysteresis band at the input. Note 3: The hysteresis-related trip points are defined as the edges of the hysteresis band, measured with respect to the center of the band (i.e., VOS) (Figure 2). Note 4: Specified with an input overdrive (VOVERDRIVE) of 100mV, and load capacitance of CL = 15pF. VOVERDRIVE is defined above and beyond the offset voltage and hysteresis of the comparator input. For the MAX9025/MAX9026, reference voltage error should also be added. 4 _______________________________________________________________________________________ UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX902