19-0707; Rev 0; 12/06 MAX16029 Evaluation Kit The MAX16029 evaluation kit (EV kit) is designed to evaluate the MAX16029 quad-voltage, capacitoradjustable, sequencing/supervisory circuit. The kit includes a fully assembled and tested PCB that allows easy access to all major functions of the part, including the inputs, timeout-delay capacitors, and outputs. The MAX16029 EV kit comes with the MAX16029 installed, but can also be used to evaluate the MAX16030 and MAX16043. Features Easy Configuration with Jumpers Input Connections Include Pads for Resistive Dividers Master Reset Pushbutton Ordering Information PART TEMP RANGE IC PACKAGE MAX16029EVKIT+ 0C to +70C* 24 TQFN-EP +Denotes a lead-free and RoHS-compliant EV kit. *This limited temperature range is for the EV kit PCB only. The MAX16029 IC temperature range is -40C to +125C. EP = Exposed paddle. Component List DESIGNATION QTY C1 1 C2-C5 C6 DESCRIPTION DESIGNATION QTY 0.1F 10%, 50V X7R ceramic capacitor (0805) TDK C2012X7R1H104K or Taiyo Yuden UMK212BJ104KG J1, J5-J8, J13 6 2-pin headers J2, J3, J4, J9-J12 7 3-pin headers R1-R8 0 Not installed, resistors (0805) 0 Not installed, capacitors (0603) 1 0.022F 10%, 25V X7R ceramic capacitor (0603) TDK C1608X7R1H223K Taiyo Yuden TMK107BJ223KA DESCRIPTION R9-R13 5 100k 1% resistors (0805) S1 1 Momentary tact switch, SPST U1 1 MAX16029TG+ -- 12 Shunts, 2 position (see Tables 1 and 2) -- 1 MAX16029 EV kit PCB Component Suppliers SUPPLIER PHONE FAX WEBSITE TDK Corp. 847-390-4373 847-390-4428 www.component.tdk.com Taiyo Yuden 847-925-0888 847-925-0899 www.t-yuden.com Note: Indicate that you are using the MAX16029 EV kit when contacting these component suppliers. ________________________________________________________________ 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 Evaluates: MAX16029/MAX16030/MAX16043 General Description Evaluates: MAX16029/MAX16030/MAX16043 MAX16029 Evaluation Kit Quick Start Required Equipment * Five power supplies: 5V, 3.3V, 2.5V, 1.8V, and 1.5V * An oscilloscope Procedure The MAX16029 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supplies until all connections are completed. 1) Connect a 5V power supply to VCC and GND, connect 3.3V to IN1, connect 2.5V to IN2, connect 1.8V to IN3, and connect 1.5V to IN4. 2) Ensure that jumper J1 is open and jumpers J2, J3, and J4 are in the 2-3 position. Jumpers J5-J8 and J13 must be closed and J9-J12 must be in the 1-2 position. 3) Connect an oscilloscope to OUT1 and RESET. 4) Turn on the 5V supply, and observe that OUT1 and RESET are low. 5) Turn on the 3.3V supply, and observe that although OUT1 is high, RESET is still low. 6) Turn on the remaining supplies, observing that after the last supply voltage exceeds its threshold, RESET goes high. 7) Press the MR button and observe RESET. Detailed Description The MAX16029 and the MAX16030/MAX16043 (that can also be evaluated on this EV kit) operate from 2.2V to 28V. They monitor up to four voltages and provide individual outputs (OUT1-OUT4) that indicate if the corresponding input is above or below its threshold. Additionally, each channel has a specific capacitor-set timeout delay. Additional features include a RESET output that goes high once all outputs are high and has its own capacitor-set delay. A MR input (controlled by the pushbutton) allows an operator to initiate a device reset, or is controlled by external logic. Monitoring Inputs Each channel monitors a voltage and controls the corresponding output according to whether it is above or below a specific threshold voltage. The threshold is either adjustable or fixed, depending on the settings of J3 and J4 (see Table 2). The voltage tolerance of 10% or 5% is set using J2. To support adjustable threshold 2 inputs, the EV kit provides space for resistor-dividers (R1-R8). To calculate the resistor values that obtain a specific threshold, use the following formula: R VINTH = VTH x 1+ 1 R2 where VTH is the adjustable threshold voltage. Outputs If a voltage present on an input goes above that input's threshold, the corresponding output asserts after a capacitor-set (C2-C5) time delay. Set the capacitor value according to the following equation: V tDELAY = 4 x 106 x CCDLY + 35 x 10-6 A where tDELAY is in seconds and CCDLY is in farads. The MAX16030 provides push-pull outputs, while the MAX16029 and MAX16043 provide open-drain outputs. The EV kit pullup resistors (R10-R13) may be enabled using J5-J8 if the MAX16029 or the MAX16043 is the part being evaluated. RESET Output The RESET output is the result of an AND operation on the four outputs. Once all four outputs go high, RESET deasserts high after a capacitor-set or fixed timeout delay set by C6 or J1. If J1 is closed, the timeout delay is 200ms. If J1 is open, the timeout delay is set by capacitor C6 to 22ms. If desired, the capacitor can be replaced. The value of the timeout is calculated using the following formula: V tRP = 1x 106 x CCRESET + 35 x 10-6 A where t RP is in seconds and C CRESET is in farads. RESET asserts low if MR is pulled low. The EV kit provides pushbutton S1 that pulls MR low to evaluate this feature. The MAX16029 uses an open-drain RESET output, so jumper J13 must be closed to connect pullup resistor R9. If the EV kit is used to evaluate the MAX16030 or MAX16043, open jumper J13, as these parts both have a push-pull RESET output. _______________________________________________________________________________________ MAX16029 Evaluation Kit J3 J4 IN1 IN2 IN3 IN4 2-3* 3.3V 2.5V 1.8V 1.5V 2-3 1-2 3.3V 1.8V ADJ ADJ 2-3 Open 3.3V 1.5V ADJ ADJ 1-2 2-3 3.3V 1.2V 1.8V 2.5V 1-2 1-2 2.5V 1.8V ADJ ADJ 1-2 Open 3.3V ADJ 2.5V ADJ Capacitor-set reset timeout (22ms) Open 2-3 3.3V ADJ ADJ ADJ Internally set reset timeout (200ms) Open 1-2 2.5V ADJ ADJ ADJ 10% threshold tolerance Open Open ADJ ADJ ADJ ADJ Table 1. J1, J2, and J5-J12 Jumper Function JUMPER J1 J2 J5-J8 J9-J12 J13 POSITION Open Closed* 1-2 2-3* Table 2. J3 and J4 Jumper Function-- Input Threshold Select 2-3* Jumper Function Tables FUNCTION 5% threshold tolerance Open* OUT_ pullups disabled Closed OUT_ pullups enabled 1-2* OUT_ enabled 2-3 OUT_ disabled Open RESET pullup disabled Closed* RESET pullup enabled Evaluates: MAX16029/MAX16030/MAX16043 ENABLE Inputs The ENABLE inputs allow individual logic-level control over each monitoring channel. Jumpers J9-J12 on the EV kit allow control over each, with position 1-2 representing a logic-high and position 2-3 a logic-low. *Default position. *Default position. _______________________________________________________________________________________ 3 Evaluates: MAX16029/MAX16030/MAX16043 MAX16029 Evaluation Kit VCC 1 2 3 J9 EN1 1 2 3 J10 EN2 1 2 3 J11 EN3 1 2 3 J12 EN4 R10 100k 1% R11 100k 1% J5 R12 100k 1% J7 J6 R9 100k 1% R13 100k 1% J8 EN4 OUT4 EN3 OUT3 EN2 OUT2 OUT1 EN1 8 9 10 11 17 16 15 14 J13 IN1 1 IN1A R1 OPEN 2 IN2 3 IN2A R3 OPEN 4 IN3 IN3A 5 R5 OPEN IN4 EN1 EN2 EN3 EN4 OUT1 OUT2 OUT3 OUT4 VCC RESET IN1 MR 18 19 U1 IN2 J2 MAX16029 IN4 3 13 TH0 GND CDLY1 CDLY2 CDLY3 CDLY4 CRESET 7 24 23 22 21 20 R7 OPEN J1 R6 OPEN R4 OPEN R2 OPEN C1 0.1F C2 OPEN C3 OPEN C4 OPEN C5 OPEN 1 2 12 TH1 IN4A R8 OPEN MR 6 TOL IN3 RESET J3 1 2 J4 3 1 2 3 TOL TH1 TH0 DEFAULT C6 0.022F GND Figure 1. MAX16029EV Kit Schematic 4 _______________________________________________________________________________________ S1 MR MAX16029 Evaluation Kit Evaluates: MAX16029/MAX16030/MAX16043 Figure 2. MAX16029EV Kit Component Placement Guide--Components Side _______________________________________________________________________________________ 5 Evaluates: MAX16029/MAX16030/MAX16043 MAX16029 Evaluation Kit Figure 3. MAX16029EV Kit PCB Layout--Component Side 6 _______________________________________________________________________________________ MAX16029 Evaluation Kit Evaluates: MAX16029/MAX16030/MAX16043 Figure 4. MAX16029EV Kit PCB Layout--Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 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