DC1633B - Demo Manual

DEMO MANUAL DC1633B
Programmable Hex
Voltage Supervisor Featuring
the LTC2933 with EEPROM
Description
The DC1633B is a demonstration system that showcases
the LTC®2933, a 6-channel I2C/SMBus voltage supervisor
with EEPROM. The LTC2933 simultaneously monitors up
to six power supply voltages and detects under/overvoltage conditions. In addition the LTC2933 monitors two GPI
pins and is able to drive three GPIO pins to indicate OV,
UV, system reset, system alert, or other control signal.
The DC1633B is a single circuit board that contains the
LTC2933 and support circuitry to provide the ability to demonstrate features and capabilities of the LTC2933 without
the need for external power supplies. The DC1633B demo
board provides an accurate voltage supervision of six channels and offers over/undervoltage thresholds in various
ranges and increments that are digitally programmable.
This demonstration system is supported by the
LTpowerPlay™ graphical user interface (GUI) which enables
complete control of all the features of the device. Together,
the LTpowerPlay software and DC1633B hardware system
create a powerful development environment for designing
and testing configuration settings of the LTC2933. These
settings can be stored in the device’s internal EEPROM or in
a file. This file can later be used to order pre-programmed
devices or to program devices in a production environment.
The software displays all of the configuration settings and
real time measurements from the system supervisor and
peripheral ICs. Telemetry allows easy access and decoding
of the fault log created by the LTC2933. The board comes
pre-programmed with the EEPROM values appropriate
for the six power supply rails on the DC1633B. Just plug
and play!
The LTC2933 chip is mounted on the topside of the board
with support ADC and DAC circuitry on the back. The ADC
provides voltage readings for all six voltage supervisor
inputs on the LTC2933 and also reads the GPI and GPIO
voltages. The DAC drives five programmable voltages
that are used to emulate the user’s system rails. The extra
support circuitry allows the user to evaluate the LTC2933
quickly and without the need for external voltmeters or
power supplies.
The DC1633B demo board can be powered by an external
power supply, such as a +12VDC supply. Communication
with the software is provided through the DC1613 USB-toI2C/SMBus/PMBus controller. The following is a checklist
of items which can be obtained from the LTC website or
LTC Field Sales.
• USB-to-I2C/SMBus/PMBus Controller (DC1613)
• LTpowerPlay Software
DC1633B Features
•
•
•
•
•
•
•
•
•
•
•
•
•
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Supervise Six Power Supplies
Powered from USB Dongle, Power Jack, or V1-V4
I2C Adjustable OV/UV Trip Points
Guaranteed Threshold Accuracy ±1%
I2C/SMBus Serial Interface
Internal EEPROM
256 Programmable Thresholds per Channel
Up to Three Range Settings per Channel
Two General Purpose Inputs
Three General Purpose Inputs/Outputs
Programmable Output Delays
Autonomous Operation without Additional Software
Supported by LTpowerPlay GUI
LTC2933 Available in 16-Lead DFN and SSOP Packages
Design files for this circuit board are available at
http://www.linear.com/demo/DC1633B
L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase are registered trademarks
and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are
the property of their respective owners. Protected by Patents including 7382303, 7420359,
7940091.
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DEMO MANUAL DC1633B
Performance Summary
COMMON CHARACTERISTICS PARAMETER
Supply Input Voltage Range
V1 Threshold Accuracy
V1 Monitoring Range
V2 to V6 Threshold Accuracy
V2 to V6 Monitoring Range
CONDITIONS
VIN1
VIN2 through VIN4
Medium Range
High Range
Precision Range
Low Range
Medium Range
Table 1. Default Thresholds and GPIO Mappings
Vn_THR_HI Vn_THR_LO
GPIO1
GPIO2
Default Thresholds
OV
ALERT
V1
5.5
4.5
Comp_Hi Comp_Hi
V2
2.6V
2.4V
Comp_Hi Comp_Hi
V3
2.1V
1.9V
Comp_Hi Comp_Hi
V4
1.6V
1.4V
Comp_Hi Comp_Hi
V5
1.3V
1.1V
Comp_Hi Comp_Hi
V6
1.05V
0.95V
Comp_Hi Comp_Hi
2
SPECIFICATIONS VALID OVER FULL OPERATING TEMPERATURE RANGE
VALUE
MIN
TYP
MAX
UNITS
3.4
13.9
V
3.4
5.8
V
±1.5
%
1
5.8
V
2.5
13.9
V
%
±1.0
0.2
1.2
V
0.5
3.0
V
1.0
5.8
V
Table 2. Default GPI Settings
GPIO3
UV
Comp_Lo
Comp_Lo
Comp_Lo
Comp_Lo
Comp_Lo
Comp_Lo
MANUAL RESET
GPI1
GPI2
MARGIN
UVDISABLE
AUX COMP
✓
✓
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DEMO MANUAL DC1633B
Glossary of Terms
The following list contains terms used throughout the
document.
AUXC: Auxiliary Comparator. A GPI pin may be programmed to this function and map behavior to a GPIO
pin. Nominal VTH = 0.5V.
EEPROM: Non-volatile memory (NVM) storage used to
retain data after power is removed.
Margin: Term used typically in board level testing that
increases/decreases the output voltage to look for sensitivity/marginality problems.
MARG: Ignore OV and UV faults when active (low). A GPI
pin may be programmed to this function and map behavior
to a GPIO pin. Nominal VTH = 1.0V.
NVM: Non-Volatile Memory, See EEPROM.
OV: Overvoltage. The result of a voltage comparison that
a pin voltage is above a programmable threshold voltage.
Rail: The final output voltage that the LTC2933 supervises.
Supervise: The act of quickly responding (compared
to a fault setting) to a voltage that is compared to preprogrammed values.
UV: Undervoltage. The result of a voltage comparison that
a pin voltage is below a programmable threshold voltage.
UVDIS: UV Disable. Ignore UV faults when the pin is low.
A GPI pin may be programmed to this function and map
behavior to a GPIO pin. Nominal VTH = 1.0V.
MR: Manual Reset, Active Low. A GPI pin may be programmed to this function, map behavior to a GPIO pin,
and optionally clear the fault history. Nominal VTH = 1.0V.
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DEMO MANUAL DC1633B
Theory of Operation
GENERAL DESCRIPTION
THE CHIP
Each channel’s high/low comparators may be mapped
to any GPIO pin, and any comparator may be mapped to
multiple GPIO pins. Typically the high comparator is used
for the overvoltage condition and the low comparator is
used for the undervoltage condition. The high comparator
is not dedicated to OV detection nor is the low comparator
dedicated for UV detection. For example, both comparators
may be configured as OV with the Vn_THR_HI set to indicate
an OV Fault and the Vn_THR_LO set for an OV Warning.
The LTC2933 integrates six voltage supervisors, two GPIs,
and three GPIOs. The V1-V6 supervisors are comprised
of OV/UV window comparators that can be programmed
to map the detection of a fault to one or more GPIO pin.
The simplified diagram of a GPIO pin shows that the pin
may be configured as an active-high or active-low input
with optional pullup, or as an active-high or active-low
output with optional latched output.
The LTC2933 is a hex voltage supervisor which detects
an over or undervoltage and signals the system of a fault
condition. It does not have a dedicated power supply pin.
The chip is powered from the highest voltage applied to
V1 through V4, as long as one of these voltages is > 3.4V.
Vn_THR_HI
HIGH THR
SETTING
Vn
Vn_THR_LO
LOW THR
SETTING
HIGH
COMPARATOR
INPUT OPTIONS
INPUT/INPUT
HIGH FAULT
LOW FAULT
GPIO
MAPPING
(Vn_CONFIG)
GPIO1
GPIO2
INTERNAL
LOGIC
GPIO
GPIO3
LOW
COMPARATOR
GPI1
GPI2
OUTPUT OPTIONS
OUTPUT/OUTPUT WITH OPEN DRAIN
OUTPUT/OUTPUT WITH PULL-UP
SMBALERT (LATCHED) WITH OPEN DRAIN OR WITH PULL-UP
DC1633B F01
Figure 1. Simplified Block Diagram of Voltage Supervisor Input
In LTpowerPlay, the user programs each voltage supervisor’s range, polarity, mapping, and high and low threshold
voltages.
The GPI input pins can be used to override fault conditions
by configuring them as MARG or UVDIS. The active-low
MARG function allows the LTC2933 to ignore OV and UV
conditions. The active-low UVDIS function is a special
case of the MARG function. It allows the device to ignore
UV conditions. The simplified diagram of a GPI pin shows
the four configurable options: Manual Reset, Margin, UV
Disable, and AUXC. The AUXC option does not provide
an internal pull-up.
INPUT OPTIONS
MANUAL RESET
MARGIN
UV DISABLE
AUXC (NO PULL-UP)
GPI
4
INTERNAL
LOGIC
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DEMO MANUAL DC1633B
Theory of Operation
5V OR EXT
GPIO1
V1
V2
I2C BUS
V3
V4
V5
V2-V6
V6
BLUE/RED
LTC2933
6-CH VOLTAGE GPIO2
SUPERVISOR
WITH EEPROM
BLUE/RED
GPIO3
BLUE/RED
VDD33
3.3VOUT
GREEN
EXT
INT
12-BIT DAC
(LTC2637)
GPI2
V1-V6, GPI1-2, GPIO1-3
GPI1
24-BIT ADC
(LTC2499)
I2C BUS
TOPSIDE COMPONENT
BOTTOM COMPONENT
+5V FROM USB
POWER
SWITCH
(LTC4415)
5V
GREEN
5V LDO
(LT1761-5)
POWER JACK
6V TO 14V
DC1633B F02
Figure 2. Simplified Block Diagram of the DC1633B
THE BOARD
The LTC2933 chip is mounted on the topside of the board
with support ADC and DAC circuitry on the back. The support circuitry is powered from +5V.
The ADC provides voltage readings for all six voltage inputs
to the LTC2933 and also reads the GPI and GPIO voltages
for a total of eleven. Although the ADC updates at a relatively
slow rate, it provides the equivalent of eleven 4½-digit
digital multimeters. The
simplest demonstration of
the DC1633B is to power
and control the board via
the DC1613 USB controller. The controller provides
5V supply and I2C/SMBus
read/write control. This setup provides a quick and easy
way to demonstrate the LTC2933’s capabilities.
One LTC2637 (DAC)
The multi-channel DAC emulates a 5-channel programmable power supply that is used to place “rail” voltages at
levels that replicate the user’s system rails. This avoids the
need for the user to wire actual supply rails to the demo
board. However, the board was designed to allow this use
case. The DAC output range is 0V to 4V. This is sufficient
for demo purposes. Simply place the V2-V6 jumpers to
“INT” for internal DAC use, and set to “EXT” if an external
supply is provided on the turret.
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DEMO MANUAL DC1633B
Theory of Operation
POWERING THE BOARD
SELECTING A DEVICE ADDRESS
The DC1633B board can be powered from the DC1613
USB’s 5V power or from a wall-powered 12V supply (jack).
The LTC2933 hex supervisor can be powered in a number
of different ways. The chip itself is powered by any of the
inputs V1 through V4, as long as one is above 3.4V. There
is a table silk-screened onto the board as a reminder. An
internal diode-OR circuit automatically selects the highest
voltage of the four inputs. If the USB power or jack power
is present, the +5V LED will illuminate. The LTC2933
can then be powered by setting the jumper to “INT 5V”.
Alternatively set the jumper to “V1 EXT” to connect an
external power supply voltage to the V1 EXT turret. The
board comes pre-configured with jumpers JP1-JP6 set
to the INTERNAL position which allows the on-board 5V
LDO regulator to power all circuits.
The DC1633B has a jumper (JP7) labeled ASEL which allows
the user to select one of three I2C addresses. See Table 3.
NOTE: Turrets V2-V6 are tied directly to the LTC2933
independent of the jumper settings. Turret “V1 EXT” is
connected to the V1 pin when the jumper is set to V1 EXT
and is not connected to the V1 pin when the jumper is set
to “INT 5V”. To monitor the V1 pin voltage with a scope
probe or DMM, a test point is provided next to the jumper.
The DC1633B uses a multiplexed ADC that is used to
provide voltage readback values. Due to the nature of
a multiplexed ADC converter, it has an associated ADC
loop time. The total ADC loop time is ~400ms for a given
channel. You may notice some lag in the update rate of
the displayed voltages.
6
Table 3. Address Selection of LTC2933
I2C ADDRESS (7-BIT)
POSITION
DEFAULT
0x1C
L
✓
0x1D
Z
0x1E
H
Regardless of the jumper setting, the part will always
respond to the I2C global 7-bit addresses 0x0C and 0x1B.
STATUS_WORD REGISTER
To clear a fault, the user may click the CF icon in the
GUI or simply push the RESET pushbutton on the demo
board. In both cases, the red (+) on the CF icon and alert
LED on the board will be cleared. You will notice that all
rails are automatically re-enabled after a programmable
retry period. The alert LED may be cleared by clicking the
Clear Faults (CF) icon in the GUI. After clearing faults, the
system tree may remain “yellow” if any non-volatile fault
logs are present.
RESTORING RAM and GUI FROM LTC2933
To restore the operating memory (RAM) from the LTC2933
EEPROM contents, click the “R” NVM-to-RAM icon in the
toolbar. To read the RAM registers into the GUI, click the
“R” RAM-to-PC icon in the toolbar.
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DEMO MANUAL DC1633B
Theory of Operation
DC1633B LEDs
DC1633B ToolWindow and GUI Indicators
The DC1633B board has two green LEDs. When USB
power (DC1613 Controller) or external power (6V-14V
jack) is applied, the +5V green LED will illuminate. The
+5V supply provides power to the support circuitry, not
necessarily to the LTC2933. The default setting of jumper
JP1 is set to internal 5V and the +3.3V OUT LED will
illuminate, indicating the LTC2933 is powered. This LED is
not a power good indicator and may falsely indicate proper
operation when dimly lit. It may be slightly illuminated if
the highest voltage on the V1-V4 inputs are set as low as
1.8V. At this point, the LTC2933 is not in a functioning
state, the I2C bus will not communicate with the GUI, and
the LTC2933 will be grayed out in the system tree.
The ToolWindow displays the ADC readings on the left and
DAC voltage settings on the right. The blue/red indicators
next to the GPIs and GPIOs display the state (H vs L) and
voltage reading from the ADC (LTC2499). Blue indicates a
logic high and red indicates a logic low. The ToolWindow
is automatically populated when LTpowerPlay detects the
DC1633B demo board when it starts.
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DEMO MANUAL DC1633B
LTpowerPlay GUI Software
LTpowerPlay is a powerful Windows-based development
environment that supports Linear Technology Power
System Management ICs with EEPROM, including the
LTC2933 6-channel voltage supervisor. The software
supports a variety of different tasks. You can use
LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also
be used in an offline mode (with no hardware present) in
order to build a multi-chip configuration file that can be
saved and reloaded at a later time. LTpowerPlay provides
unprecedented system level diagnostic and debug features.
It becomes a valuable diagnostic tool during board bringup to program or tweak the power management scheme
in a system or to diagnose power issues when bringing
up rails. LTpowerPlay utilizes the DC1613 I2C/SMBus/
PMBus controller to communicate with one of many potential targets, including the DC1633B demo system or a
customer board. The software also provides an automatic
update feature to keep the software current with the latest
set of device drivers and documentation. The LTpowerPlay
software can be downloaded from:
http://www.linear.com/ltpowerplay
To access technical support documents for LTC Power
System Management Products visit "Help, View Online
Help" on the LTpowerPlay menu.
Figure 3. Screenshot of the LTpowerPlay GUI
8
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DEMO MANUAL DC1633B
Quick Start Procedure
The following procedure describes how to set up a DC1633B
demo system.
1.Download and install the LTpowerPlay GUI:
www.linear.com/ltpowerplay
2.Remove the board from the ESD protective bag and
place it on a level surface. Connect the DC1613 I2C/
SMBus/PMBus Controller to the DC1633B board using
the 12-pin ribbon cable.
5.Load the Demo Configuration.
In the upper left hand corner of the GUI, select File >
Initialize DC1633B Demo > Demo Config (or Factory
Defaults). This will load the configuration settings into
the working RAM of the LTC2933, set the DAC outputs,
clear the status registers, and store the settings into
NVM (EEPROM). The ‘Demo Config’ file is the starting
point for the use cases. The ‘Factory Defaults’ file sets
the Vn thresholds that accommodate the initial powerup
state of the DAC outputs (2.048V).
Saving a Configuration
You can make changes to the LTC2933 register values
and DAC settings. Save the demo board configuration to
a (*.proj) file by clicking the "Save" icon. This creates a
backup file. Name it whatever you like. Note that the DAC
settings are saved in the project file.
Figure 4. Connecting DC1633B Board and the DC1613
USB to I2C/SMBus/PMBus Controller
3.Plug the USB-to-I2C/SMBus/PMBus Controller into a
USB port on your PC. The board should power up with
+5V and +3.3V OUT LEDs illuminated green. The GPIO
LEDs will illuminate blue.
4.Launch the LTpowerPlay GUI.
a.The GUI automatically identifies the DC1633B and
builds a system tree for each I2C device. The system
tree on the left hand side will look like this:
Quick Start Video
There is a Quick Start video that covers the basic features
of the LTC2933 chip and DC1633B demo board. The video
can be accessed via LTpowerPlay by navigating to the Help
menu > DC1633B.
b.A green message box will be displayed momentarily
in the lower left hand corner confirming that the
DC1633B is communicating.
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DEMO MANUAL DC1633B
DC1633B Details – Top Side
Figure 5. DC1633B Top Side Details
Table 2. Default Jumper Configuration
REFERENCE DESIGNATOR
10
SIGNAL NAME
USAGE
JP1
V1
JP2–JP6
V2–V6
Selects Internal 5V vs External “V1 EXT” Turret Power
Selects Internal vs External Voltage
JP7
ASEL
Selects H/Z/L for LTC2933 Slave Address
DEFAULT
INT 5V
INT
L
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DEMO MANUAL DC1633B
Demo Board Use Cases
USE CASE #1
A common configuration for the LTC2933 dedicates the
V1 pin to the highest supply in the system and uses V2-V6
to monitor other voltages. The V1 pin provides power to
the chip and also is used to detect an OV or UV on the V1
pin. For simplicity, the USB controller (DC1613) powers
the board and the LTC2933 is powered via the V1 pin with
the jumper set to INT 5V.
Each of the high comparator fault outputs is mapped to
GPIO1, indicating an active-low OV fault. Each of the low
comparator fault outputs are mapped to GPIO3, indicating
an active-low UV fault. These OV and UV conditions are
indicated in multiple places – LEDs next to the GPIO turrets and also in the GUI. The GPIO2 pin has been mapped
as an active-low latched OV indicator. The latched ALERT
is cleared by pressing the GPI1 pushbutton. The GPIO
pins have a red-blue LED which is red when low and blue
when high.
and 1.1V. Also notice in
the Telemetry window a
STATUS_WORD register,
expand it. This register is
a live indicator of LO or
HI fault conditions. Note
the state of LO_FAULT
bits when the margin low
button is selected. We can
demonstrate the effect of
the GPI2 pushbutton at
this point. The GPI2 pin
has been programmed to function as MARG, enabling the
LTC2933 to ignore all UV conditions. Notice that when the
pushbutton is depressed, GPIO3 returns high (blue). This
is useful when the system does not want to be informed
of a UV condition during margin low testing. Moving the
DAC voltages back to 1.2V and 1V returns GPIO3 to a high
state (blue), indicating there is no UV condition.
The two GPI inputs are used to detect a Manual Reset
(MR) and Margin disable (MARG) and activated when the
pushbutton switches are depressed.
GPIO1 → OV fault
GPIO2 → ALERT (latched)
GPIO3 → UV fault
GPI1 → MR (manual reset)
GPI2 → MARG (ignore OV/UV when margining)
Let’s margin V5 and V6 low by typing a value of 1V and 0.9V
into the respective DAC control boxes. You may also move
the DAC output by
clicking the up/
down arrows on
the individual DAC
box or by doubleclicking the DAC
value and entering
a new value in the
box. V5 and V6
will report a UV,
turning the LED on
GPIO3 red. The dashboard in the GUI indicates the V5
and V6 voltages are below the LO thresholds of 0.95V
Let’s margin V5 and V6 high by typing a value of 1.4V
and 1.1V into the respective DAC control boxes. V5 and
V6 will report an OV in the GUI and on the demo board.
Both GPIO1 and GPIO2
LEDs will turn red and
the dashboard indicates
an OV condition and a
latched ALERT. Note
the state of HI_FAULT
bits in the STATUS_
WORD register. When the
GPI2 button is pushed,
the GPIO1 (OV) LED is
returned to blue and the
STATUS_WORD reflects
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DEMO MANUAL DC1633B
Demo Board Use Cases
the MARG pin as well, clearing the HI_FAULT bits. We
can now change the DACs back to 1.2V and 1.0V. The OV
condition is no longer present, however ALERT (GPIO2)
remains latched low. Since the GPI1 pin is defined as a
Manual Reset, pressing this button clears the latched
ALERT, turning GPIO2 LED blue which indicates a deasserted high state.
USE CASE #2
The DC1633B demo board can be configured to supervise
external supply voltages. Inputs V2-V6 may be used for
this purpose. Simply move the jumper from INT to EXT
which disconnects the backside DAC, allowing an external voltage to be applied to the LTC2933. Please ensure
the max ratings on the turrets are not exceeded, most of
which are 6V. For simplicity, the V1 jumper will remain
in the INT 5V position to power the LTC2933. However,
in an actual application, the device is powered from the
highest voltage on the V1-V4 pins, assuming at least one
is above 3.4V.
Apply an external supply voltage to the turret. It is recommended to drive V1-V4 turrets with a low impedance
(<10Ω) voltage source. A sensor or other moderate source
impedance voltage may be supervised on V5 or V6 inputs.
A battery voltage may be supervised on V1-V4 and power
the chip since the LTC2933 supply current is <700µA.
For example, a +5V external supply may be connected to
turret V2. Notice the GPIO1 and GPIO2 LEDs turn red, indicating OV and ALERT are asserted low. The V2 thresholds
need to be changed. Enter 5.5V and 4.5V for the HI and LO
threshold settings. The GPIO1 will return high and the LED
will change to blue but the GPIO2 remains low (red) since
it indicates a latched ALERT. Press the MR pushbutton on
GPI1 to release GPIO2 back high (LED blue).
The GPI inputs may also be used to monitor external
voltages. These pins can be configured as an auxiliary
comparator (AUXC). In this mode, the GPI pin voltage is
compared to an internal 0.5V reference. Typically an external
voltage divider is provided to obtain the appropriate trip
point for the external voltage. The GPI comparators can
be mapped to one of the GPIOs to alert the system of an
over or undervoltage condition.
12
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DEMO MANUAL DC1633B
Demo Board Use Cases
USE CASE #3
Another common configuration is one that uses a GPIO
pin to drive a system reset. The LTC2933 data sheet shows
this feature throughout. The other two GPIOs are configured as previously shown, OV and ALERT. Additionally a
manual reset pushbutton (GPI1) asserts the system reset.
3. Configure GPIO1 as active-low with weak pull-up. To
update the changes made in steps 1-3, click the Write
All Registers (PC->RAM) icon.
GPIO1 → RST (system reset)
GPIO2 → OV
GPIO3 → ALERT
4. You can optionally extend the low time of the system
reset by changing the delay-on-release setting to ensure
a clean release of reset. This provides a time-based
debounce of the switch.
GPI1 → MR pushbutton
V1 V2 V3 V4 V5 V6
LTC2933
GPI1
MR
SYSTEM
GPIO1
GPIO2
GPIO3
SDA
SCL
GPI2
RST
OV
ALERT
MARG
1. To program GPIO1 to system reset function, first uncheck
the mapping of all V1-V6 channels to GPIO1.
2. Configure GPI1 as a Manual Reset. Map GPI1 to
GPIO1.
When configured in this way, GPIO1 provides a system
reset for the host processor and GPI1 can drive a system
reset (GPIO1) with a push of a button. You may set the
GPIO1 delay-on-release time to 410ms to experience
the extended reset firsthand. The UV condition indicator
remains on GPIO3. The OV condition is indicated as a
latched ALERT on GPIO2. When the GPI1 pushbutton
is pressed, a system reset is asserted on GPIO1 and the
ALERT is released if the OV condition is removed.
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DEMO MANUAL DC1633B
DC1633B Details – Top
14
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DEMO MANUAL DC1633B
DC1633B Details – Bottom
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DEMO MANUAL DC1633B
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
IC PROG HEX VOLT SUPERVISOR EEPROM SSOP16
LINEAR: LTC2933CGN#PBF
CAP CER 10nF 25V 10% X7R 0603
MURATA: GRM188R71E103KA01D
Required Circuit Components
1
1
U1
Additional Demo Board Circuit Components
2
16
C1, C2, C3, C4, C5, C6, C8, C9,
C10, C11, C12, C13, C14, C19,
C27, C34
3
9
C7, C15, C16, C17, C18, C26, C28, CAP CER 100nF 16V 10% X7R 0603
C29, C33
MURATA: GRM188R71C104KA01D
4
3
C20, C21, C25
CAP CER 1µF 16V 10% X7R 0603
MURATA: GRM188R71C105KA12D
5
1
C22
CAP CER 22µF 25V 10% X5R 1210
MURATA: GRM32ER61E226KE15L
6
2
C23, C24
CAP CER 10µF 16V 10% X5R 0805
MURATA: GRM21BR61C106KE15L
7
0
C30, C31, C32 (OPT.)
CAP CER 100nF 16V 10% X7R 0603
8
3
LED1, LED2, LED3
LED-DUAL-COLOR 1.6mm × 0.8mm RED-BLUE
KINGBRIGHT: APHB1608QBDSURKC
9
2
LED4, LED5
LED GREEN SS TYPE BRIGHT SMD
PANASONIC: LNJ326W83RA
10
3
Q1, Q2, Q3
MOSFET NCH DUAL 60V 180MA
DIODES INC: 2N7002DWA-7
11
1
R1
RES 60.4kΩ 0.1W 0.1% ±25ppm 0603 SMD
PANASONIC: ERA-3AEB6042V
12
5
R2, R3, R4, R5, R6
RES 20.0kΩ 0.1W 0.1% ±25ppm 0603 SMD
PANASONIC: ERA-3AEB203V
13
6
R7, R8, R9, R10, R11, R12
RES 10.0kΩ 0.1W 0.1% ±25ppm 0603 SMD
PANASONIC: ERA-3AEB103V
14
8
R13, R14, R41, R42, R44, R55,
R56, R57
RES 10.0kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW060310K0FKEA
15
2
R15, R16
RES 402kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW0603402KFKEA
16
5
R17, R18, R61, R63, R65
RES 200kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW0603200KFKEA
17
3
R19, R20, R21
RES 604kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW0603604KFKEA
18
6
R22, R23, R24, R62, R64, R66
RES 100kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW0603100KFKEA
19
4
R25, R27, R29, R48
RES 3.0kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW06033K00JNEA
20
6
R26, R28, R30, R46, R58, R59
RES 1.0kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW06031K00JNEA
21
0
R31, R32, R33, R49, R51, R53
(OPT.)
RES 0Ω 0603 SMD (OPTIONAL)
22
8
R34, R35, R36, R37, R38, R50,
R52, R54
RES 0Ω 0.1W 0603 SMD
VISHAY: CRCW06030000Z0EA
23
2
R39, R40
0Ω RESISTOR ARRAY, 4 RES, 1206
PANASONIC: EXB-38VR000V
24
1
R43
RES 49.9kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW060349K9FKEA
25
1
R45
RES 249Ω 0.1W 1% 0603 SMD
VISHAY: CRCW0603249RFKEA
26
1
R47
RES 9.31kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW06039K31FKEA
27
1
R60
RES 1.50kΩ 0.1W 1% 0603 SMD
VISHAY: CRCW06031K50JNEA
LINEAR: LTC2499CUHF#PBF
28
1
U2
IC ADC 24-BIT DELTA SIGMA 16-CH WITH I2C
29
1
U3
IC OPAMP DUAL MICROPOWER
LINEAR: LTC6078CMS8
30
1
U4
IC DAC 12BIT OCTAL WITH I2C
LINEAR: LTC2637CMS-HMX12
31
1
U5
IC VREF SERIES PRECISION REFERENCE
LINEAR: LT6654AMPS6-4.096
32
1
U6
FIXED 5V 100mA MICROPOWER LDO
LINEAR: LT1761ES5-5#PBF
MICROCHIP: 24AA02T-I/OT
LINEAR: LTC4415IMSE#PBF
33
1
U7
2K-BIT I2C SERIAL EEPROM
34
1
U8
DUAL 4A IDEAL DIODES with ADJ CURR LMT
16
dc1633bf
DEMO MANUAL DC1633B
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Hardware - For Demo Board Only
35
1
J1
CONN HEADER 12POS 2MM STR DL PCB
FCI: 98414-G06-12ULF
36
1
J2
CONN PWR JACK 2.1mm × 5.5mm HIGH CUR
CUI INC: PJ-002AH
37
6
JP1-JP6
2mm PIN HEADER 1×3
SULLINS: NRPN031PAEN-RC
38
1
JP7
2mm PIN HEADER 1×4
SULLINS: NRPN041PAEN-RC
39
4
MH1-MH4
SPACER STACKING #4 SCREW NYLON
KEYSTONE: 8831
40
2
SW1, SW2
BLK SWITCH TACTILE SPST-NO 0.05A 12V
C&K: PTS635SL25SMTR LFS
41
18
TP1-TP18
TERM SOLDER TURRET .219"H .109"L
MILL MAX: 2501-2-00-80-00-00-07-0
42
1
TP19
TERM SOLDER TURRET .156"H .084"L
MILL MAX: 2308-2-00-80-00-00-07-0
dc1633bf
17
JP1
1
2
3
C3
10nF
C2
10nF
JP6
MOVE JUMPER TO "EXT" WHEN
APPLYING EXTERNAL VOLTAGE
DAC_CH6
MOVE JUMPER TO "EXT" WHEN
APPLYING EXTERNAL VOLTAGE
DAC_CH5
JP5
C6
10nF
C5
10nF
C4
10nF
MOVE JUMPER TO "EXT" WHEN
APPLYING EXTERNAL VOLTAGE
DAC_CH4
JP4
MOVE JUMPER TO "EXT" WHEN
APPLYING EXTERNAL VOLTAGE
DAC_CH3
JP3
MOVE JUMPER TO "EXT" WHEN
APPLYING EXTERNAL VOLTAGE
DAC_CH2
JP2
C1
10nF
JUMPER VIN1 FOR EXTERNAL POWER,
JUMPER +5V FOR INTERNAL POWER
14V MAX
6V MAX
V3
6V MAX
V4
6V MAX
V5
6V MAX
V6
GND
R12
10.0k
R6
20.0k
GND
R11
10.0k
R5
20.0k
GND
R10
10.0k
R4
20.0k
GND
R9
10.0k
R3
20.0k
GND
R8
10.0k
R2
20.0k
6V MAX
V2
R7
10.0k
R1
60.4k
GND
+5V
ADC_CH5
DIVIDE BY 3
ADC_CH4
DIVIDE BY 3
ADC_CH3
DIVIDE BY 3
ADC_CH2
DIVIDE BY 3
ADC_CH1
DIVIDE BY 3
ADC_CH0
DIVIDE BY 7
V1 Test Point
(OPT.)
GND
C32
100nF
(OPT.)
GND
C31
100nF
(OPT.)
GND
C30
100nF
GND
C29
100nF
GND
GND
C9
10nF
GND
C8
10nF
JP7
+3V3
1
2
3
4
R13
10k
R14
10k
GND
SW2
SW1
GND
GND
GND
C11
10nF
R18
200k
R62
100k
ADC_CH11
R61
200k
CUSTOMER NOTICE
GND
ADC_CH10
6V MAX
GPI2
C10
10nF
6V MAX
R16
402k
R17
200k
R15
402k
GPI1
LED4
GREEN
R60
1.5k
ADC_CH9
C7
100nF
+3.3V OUT
Test Point
*** Slave Address ***
0x1C if ASEL=low (default)
0x1D if ASEL=float
0x1E if ASEL=high
GND
GND 6
8 ASEL
SDA 11
SCL 12
VDD33 5
14 GPI1
13 GPI2
V1
V2
V3
V4
V5
V6
GPIO1 10
GPIO2 9
GPIO3 7
4
3
2
1
16
15
U1
LTC2933
+3V3
1
2
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
R56
10k
BLUE
R27
3k
5
M.P.
APP ENG.
SCALE = NONE
M.P.
5
Q3
2N7002DWA
BLUE
R29
3k
5
Q2
2N7002DWA
PCB DES.
R57
10k
BLUE
R25
3k
Q1
2N7002DWA
R55
10k
B
GND
LED3
R30
1k
GND
www.linear.com
GND
R24
100k
R21
604k
LTC2933
Demo Circuit 1633B
1
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
C14
10nF
ADC_CH8
GPIO3
14V MAX
C13
10nF
R23
100k
GND
ADC_CH7
R20
604k
LED2
14V MAX
GPIO2
C12
10nF
R28
1k
GND
GND
ADC_CH6
R19
604k
LED1
R22
100k
GPIO1
R26
1k
14V MAX
SCL
I2C_SCL
LTC2933 PROGRAMMABLE HEX VOLTAGE
SUPERVISOR WITH EEPROM
2
RED
+5V
2
RED
+5V
2
RED
+5V
SDA
I2C_SDA
1. RESISTORS R1-R12 ARE 0.1% +/-25ppm, ALL OTHER RESISTORS
ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603.
3. INTERNAL POWER FOR ADC/DAC/LEDs IS 5.0V
-
1
3 2
4
1
3 2
4
1
3 2
4
3
6 4
1
3
6 4
1
3
6 4
18
1
V1/+5V
DEMO MANUAL DC1633B
Schematic Diagram
dc1633bf
GND
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
CONN_DC1613
C20
1uF
+5V
GND
R41
10k
I2C_SDA
I2C_SCL
R42
10k
GND
3 SDA
2 GND
1 SCL
U7
24AA02
VCC 4
WP 5
3 SHDN BYP 4
OUT 5
2 GND
1 IN
GND
NC
5
GND
0805
C23
10uF/16V
C26
100nF
GND
GND
C34
10nF
R35
0
R32
OPT
GND
R36
0
R33
OPT
+5V
DO NOT INSTALL:
R31, R32, R33
R34
0
VREF
GND
C16
100nF
C15
100nF
R31
OPT
GND
+5V
5V LDO to power board
when +12V power present
U6
LT1761-5
VREF
1210
GND
C21
1uF
C22
22uF/25V
GND
GND
GND
+12V
VIN 4
+5V (100mA)
1
SDA
2
GND
3
SCL
4
+3.3V(100mA) 5
ALERT
6
GPO_1
7
OUTEN
8
GPO_2
9
GND
10
AUXSCL
11
AUXSDA
12
J1
1
3
2
3 DNC
2 GND DNC 5
1 GND VOUT 6
U5
LT6654
4.096V Ref
COM
3
2
38
37
36
25
24
27
26
35
29
30
28
R64
100k
GND
GND
ADC_CH12
GND
R63
200k
C33
GND
7
GND
1
4
6
31
32
33
34
39
SDA
SCL
CA2
CA1
CA0
ADCINP
MUXOUTP
MUXOUTN
ADCINN
F0
REF+
REF-
VCC
R43
R44
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
49.9k
10k
GND
1k
R66
100k
+INB
-INB
V-
V+
OUT1
OUT1
STAT1
WARN1
WARN2
STAT2
OUT2
OUT2
GND
IN1
IN1
EN1
CLIM1
CLIM2
EN2
IN2
IN2
1
7
OUTB
16
15
14
13
12
11
10
9
0805
GND
+5V
GND
LED5
GREEN
R48
3.01k
R37
0 ohm
GND
C19
10nF
C27
10nF
GND
C24
10uF/16V
1k
R59
1k
GND
R58
C28
100nF
OUTA
GND
U8
LTC4415IMSE
C25
1uF
1
2
3
4
5
6
7
8
GND
R65
200k
ADC_CH13
GND
+INA
-INA
Diode-OR
6
5
3
2
U3
LTC6078
+5V
8
4
U2
LTC2499
100nF
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
R46
R47
ADC_CH0
ADC_CH1
ADC_CH2
ADC_CH3
ADC_CH4
ADC_CH5
ADC_CH6
ADC_CH7
ADC_CH8
ADC_CH9
ADC_CH10
ADC_CH11
ADC_CH12
ADC_CH13
R45
ADC Section
EXP GND
*** Slave Address 0x14 (default) ***
CA2=low, CA1=low, CA0=low
249
9.31k
1
2
R38
0 ohm
GND
C17
100nF
+5V
GND
C18
100nF
R50
0
R53
OPT
R49
OPT
R52
0
GND
16 GND
6 CA2
10 CA1
7 CA0
9 SDA
8 SCL
2
3
4
5
R40
ZERO OHM, 4X
DO NOT INSTALL:
R49, R51, R53
I2C_SCL
I2C_SDA
DAC_CH6
DAC_CH5
DAC_CH4
DAC_CH3
DAC_CH2
MIKE P.
M.P.
SCALE = NONE
APP ENG.
M.P.
B
LTC2933
Demo Circuit 1633B
1
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
LTC2933 PROGRAMMABLE HEX VOLTAGE
SUPERVISOR WITH EEPROM
www.linear.com
1. ALL RESISTORS ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603.
3. INTERNAL POWER FOR ADC/DAC/LEDs IS 5.0V
GND
+5V
PCB DES.
R54
0
R51
OPT
DAC_E 12
DAC_F 13
DAC_G 14
DAC_H 15
DAC_A
DAC_B
DAC_C
DAC_D
U4
LTC2637CMS
1 VCC
11 REF
ZERO OHM, 4X
R39
*** Slave Address 0x22 (default) ***
CA2=low, CA1=high, CA0=low
CUSTOMER NOTICE
VREF
DAC Section
-
DEMO MANUAL DC1633B
Schematic Diagram
dc1633bf
19
DEMO MANUAL DC1633B
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
20 Linear Technology Corporation
dc1633bf
LT 1114 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2014
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