MAX6400MAX6405 19-2043 Rev 1 8/01 P Supervisory Circuits in 4-Bump (2 2) Chip-Scale Package General Description Features The MAX6400MAX6405 is a family of ultra-low power Ultra-Small 4-Bump (2 2) Chip-Scale Package, microprocessor (P) supervisory circuits used for moni- (Package Pending Full QualificationExpected toring battery, power-supply, and regulated system Completion Date 6/30/01. See UCSP Reliability voltages. Each device contains a precision bandgap Section for More Details.) reference comparator and is trimmed to specified trip 70% Smaller Than SC70 Package threshold voltages. These devices provide excellent cir- Ultra-Low 500nA (typ) Supply Current cuit reliability and low cost by eliminating external com- (MAX6400/MAX6401/MAX6402) ponents and adjustments when monitoring system voltages from 2.5V to 5.0V. A manual reset input is also Factory-Trimmed Reset Thresholds from 2.20V to included. 4.63V in Approximately 100mV Increments The MAX6400MAX6405 assert a reset signal whenev- 2.5% Threshold Accuracy -40C to +85C er the V supply voltage falls below a preset thresh- CC Factory-Set 100ms (min) Reset Timeout Period old. These devices are differentiated by their output logic configurations and preset threshold voltages. The Manual Reset Input MAX6400/MAX6403 (push-pull) and the MAX6402/ Guaranteed Reset Valid to V = 1.0V CC MAX6405 (open-drain) have an active-low reset (RESET Three Reset Output Logic Options: Active-Low is logic low when V is below V ). The MAX6401/ CC TH Push-Pull, Active-High Push-Pull, and Active-Low MAX6404 have an active-high push-pull output (RESET Open-Drain. is logic high when V is below V ). All parts are CC TH guaranteed to be in the correct output logic state for Immune to Short V Transients CC V down to 1V. The reset circuit is designed to ignore CC No External Components fast transients on V . The MAX6400/MAX6401/ CC MAX6402 have voltage thresholds between 2.20V and Ordering Information 3.08V in approximately 100mV increments. The PART TEMP. RANGE PIN-PACKAGE MAX6403/MAX6404/MAX6405 have voltage thresholds o o between 3.30V and 4.63V in approximately 100mV MAX6400BS -T -40 C to +85 C UCSP-4 increments. o o MAX6401 BS -T -40 C to +85 C UCSP-4 o o Ultra-low supply current of 500nA (MAX6400/MAX6401/ MAX6402 BS -T -40 C to +85 C UCSP-4 MAX6402) makes these parts ideal for use in portable o o MAX6403BS -T -40 C to +85 C UCSP-4 equipment. These devices are available in 4-bump o o MAX6404 BS -T -40 C to +85 C UCSP-4 chip-scale packages (UCSP) o o MAX6405 BS -T -40 C to +85 C UCSP-4 Applications The MAX6400MAX6405 are available in factory-set V reset CC Portable/Battery-Powered Equipment thresholds from 2.20V to 4.63V, in approximately 0.1V incre- Cell Phones ments. Choose the desired reset-threshold suffix from Table 1 and insert it in the blank space following S. There are 21 stan- PDAs dard versions with a required order increment of 2500 pieces. MP3 Players Sample stock is generally held on the standard versions only Pagers (Table 1). Required order increment is 10,000 pieces for non- standard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only. Selector Guide UCSP reliability is integrally linked to the users assembly NOMINAL RESET/RESET PART methods, circuit board material, and environment. Refer to the V (V) OUTPUT TYPE TH UCSP Reliability Notice in the UCSP Reliability section of this MAX6400 2.20 to 3.08 Push-Pull, Active-Low data sheet for more information. MAX6401 2.20 to 3.08 Push-Pull, Active-High Pin Configuration appears at end of data sheet. MAX6402 2.20 to 3.08 Open-Drain, Active-Low MAX6403 3.30 to 4.63 Push-Pull, Active-Low MAX6404 3.30 to 4.63 Push-Pull, Active-High MAX6405 3.30 to 4.63 Open-Drain, Active-Low UCSP is a trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.P Supervisory Circuits in 4-Bump (2 2) Chip-Scale Package ABSOLUTE MAXIMUM RATINGS All voltages measured with respect to GND, unless otherwise noted. V ...........................................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) CC A RESET, RESET (push-pull) .........................-0.3V to (V + 0.3V) 4-Bump UCSP (derate 3.8mW/C above +70C).........303mW CC RESET (open-drain)..................................................-0.3V to +6V Operating Temperature Range ..........................-40C to +85C MR ..............................................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C CC Input/Output into Any Pin....................................................20mA Storage Temperature Range ............................-65C to +150C Bump Reflow Temperature .............................................+235C 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 (V = 1.0V to 5.5V, T = -40C to +85C, unless otherwise noted. Typical values are at V = 3.0V and T = +25C.) (Note 1) CC A CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = 0C to +70C 1.0 5.5 A Supply Voltage Range V V CC T = -40C to +85C 1.2 5.5 A MAX6400/MAX6401/MAX6402 V = 3.0V for V 2.93V, CC TH 0.5 1.0 Supply Current I V = 3.2V for V 2.93V, no load A CC CC TH V = 5.5V, no load 1.0 1.75 CC T = +25CV - 1.5% V V + 1.5% A TH TH TH Reset Threshold V Table 1 V TH T = -40C to +85CV - 2.5% V V + 2.5% A TH TH TH MAX6400/MAX6401/MAX6402 6.3 Reset Threshold Hysteresis mV MAX6403/MAX6404/MAX6405 9.5 Reset Threshold Tempco V /C 40 ppm/C TH V to Reset Delay t V = (V +100mV) to (V - 100mV) 20 s CC RD CC TH TH Reset Active Timeout Period t 100 185 280 ms RP V 0.8 IL V > 4.0V TH V 2.0 IH MR Input V V 0.2 x V IL CC V 4.0V TH V 0.7 x V IH CC MR Minimum Input Pulse Width t 1 s MD MR Glitch Rejection 100 ns MR to Reset Delay Time 200 ns MR Pullup Resistance 25 50 75 k 2 MAX6400MAX6405