General Description
The MAX16029 evaluation kit (EV kit) is designed to
evaluate the MAX16029 quad-voltage, capacitor-
adjustable, 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
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-0707; Rev 0; 12/06
Component List
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.
Component Suppliers
PART TEMP RANGE IC PACKAGE
MAX16029EVKIT+ 0°C to +70°C* 24 TQFN-EP†
DESIGNATION QTY DESCRIPTION
C1 1
0.1µF ±10%, 50V X7R ceramic
capacitor (0805)
TDK C2012X7R1H104K or
Taiyo Yuden UMK212BJ104KG
C2–C5 0 Not installed, capacitors (0603)
C6 1
0.022µF ±10%, 25V X7R
ceramic capacitor (0603)
TDK C1608X7R1H223K
Taiyo Yuden TMK107BJ223KA
DESIGNATION QTY DESCRIPTION
J1, J5–J8, J13 6 2-pin headers
J2, J3, J4, J9–J12 7 3-pin headers
R1–R8 0 Not installed, resistors (0805)
R9–R13 5 100kΩ ±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
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
+
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 -40°C to +125°C.
†
EP = Exposed paddle.
Note: Indicate that you are using the MAX16029 EV kit when contacting these component suppliers.
Ordering Information
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
2 _______________________________________________________________________________________
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, con-
nect 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 cor-
responding 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 capaci-
tor-set delay. A MR input (controlled by the pushbutton)
allows an operator to initiate a device reset, or is con-
trolled by external logic.
Monitoring Inputs
Each channel monitors a voltage and controls the cor-
responding 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
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:
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:
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:
where tRP is in seconds and CCRESET is in farads.
RESET asserts low if MR is pulled low. The EV kit pro-
vides 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.
tV
AC
RP CRESET
=×
⎛
⎝
⎜⎞
⎠
⎟×+×
−
110 35 10
66
tV
AC
DELAY CDLY
=×
⎛
⎝
⎜⎞
⎠
⎟×+×
−
410 3510
66
VV R
R
INTH TH
=×+
⎛
⎝
⎜⎞
⎠
⎟
11
2
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 repre-
senting a logic-high and position 2-3 a logic-low.
Jumper Function Tables
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
_______________________________________________________________________________________ 3
Table 1. J1, J2, and J5–J12 Jumper
Function
JUMPER POSITION FUNCTION
Open Capacitor-set reset timeout (22ms)
J1 Closed* Internally set reset timeout (200ms)
1-2 10% threshold tolerance
J2 2-3* 5% threshold tolerance
Open* OUT_ pullups disabled
J5–J8 Closed OUT_ pullups enabled
1-2* OUT_ enabled
J9–J12 2-3 OUT_ disabled
Open RESET pullup disabled
J13 Closed* RESET pullup enabled
*
Default position.
Table 2. J3 and J4 Jumper Function—
Input Threshold Select
J3 J4 IN1 IN2 IN3 IN4
2-3* 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
Open 2-3 3.3V ADJ ADJ ADJ
Open 1-2 2.5V ADJ ADJ ADJ
Open Open ADJ ADJ ADJ ADJ
*
Default position.
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
4 _______________________________________________________________________________________
1
2
3
J12
EN4
VCC
GND
EN4
EN3
EN2
EN1
IN1
IN1A
IN2
IN2A
IN3
IN3A
IN4
IN4A
1
2
3
J11
EN3
1
2
3
J10
EN2
1
2
3
J9
EN1
EN1
VCC
8 9 10 11 17
J5
R10
100kΩ
1%
R11
100kΩ
1%
R12
100kΩ
1%
R13
100kΩ
1%
J6
R9
100kΩ
1%
R2
OPEN
R4
OPEN
R6
OPEN
R8
OPEN
R7
OPEN
R5
OPEN
R3
OPEN
R1
OPEN
J13
J3
J2
TOL
S1
MR
TH1
J4
J1
DEFAULT
C6
0.022μF
OUT4
OUT3
OUT2
OUT1
J7 J8
16 15 14
18
19
6
12
20
13
EN2 EN3 EN4 OUT1 OUT2 OUT3 OUT4
TOL
TH1
TH0
CRESET
RESET
MR
RESET
MR
C4
OPEN
22
CDLY3
C5
OPEN
21
CDLY4
C2
OPEN
247
1
IN1
2
IN2
3
IN3
4
IN4
5
CDLY1GND
C1
0.1μF
C3
OPEN
23
CDLY2
1
2
3
TH0
1
2
3
1
2
3
MAX16029
U1
Figure 1. MAX16029EV Kit Schematic
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
_______________________________________________________________________________________ 5
Figure 2. MAX16029EV Kit Component Placement Guide—Components Side
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
6 _______________________________________________________________________________________
Figure 3. MAX16029EV Kit PCB Layout—Component 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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________
7
© 2006 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Evaluates: MAX16029/MAX16030/MAX16043
MAX16029 Evaluation Kit
Figure 4. MAX16029EV Kit PCB Layout—Solder Side
