LINER LTC2936 Supervise six power supply Datasheet

DEMO MANUAL DC1605B
Programmable Hex
Voltage Supervisor Featuring
the LTC2936 with EEPROM
Description
The DC1605B is a demonstration system that showcases
the LTC®2936, a 6-channel I2C/SMBus voltage supervisor
with EEPROM. The LTC2936 simultaneously monitors up
to six power supply voltages and detects undervoltage and
overvoltage conditions. In addition the LTC2936 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 DC1605B is a single circuit board that contains the
LTC2936 and support circuitry to provide the ability to demonstrate features and capabilities of the LTC2936 without
the need for external power supplies. The DC1605B demo
board provides an accurate voltage supervision of six channels and offers over/undervoltage thresholds in various
ranges and increments that are digitally programmable.
the LTC2936 quickly and without the need for external
voltmeters or power supplies.
The DC1605B 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.
n
USB-to-I2C/SMBus/PMBus Controller (DC1613)
n
LTpowerPlay Software
DC1605B Features
n
Supervise Six Power Supplies
n
Powered from USB Dongle, Power Jack, or VIN
n
I2C Adjustable OV/UV Trip Points
n
Guaranteed Threshold Accuracy: ±1%
n
I2C/SMBus Serial Interface
n
Internal EEPROM
n
Six Comparator Outputs
n
256 Programmable Thresholds per Channel
n
Up to Three Range Settings per Channel
n
Two General Purpose Inputs
n
Three General Purpose Inputs/Outputs
n
Programmable Output Delays
The LTC2936 chip is mounted on the topside of the board
with support ADC and DAC circuitry on the back.
n
Autonomous Operation without Additional Software
n
Supported by LTpowerPlay GUI
The ADC provides voltage readings for all six voltage
supervisor inputs on the LTC2936 and also reads the GPI
and GPIO voltages. The DAC drives six programmable
voltages that are used to emulate the user’s system rails.
The extra support circuitry allows the user to evaluate
n
LTC2936 Available in 24-Lead QFN and SSOP Packages
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 DC1605B hardware system create a powerful development environment
for designing and testing configuration settings of the
LTC2936. 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 LTC2936. The board comes pre-programmed with
the EEPROM values appropriate for the six power supply
rails on the DC1605B. Just plug and play!
Design files for this circuit board are available at
http://www.linear.com/demo/DC1605B
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
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DEMO MANUAL DC1605B
Performance Summary
Specifications are valid over the full operating temperature range.
Common Characteristics
PARAMETER
CONDITIONS
MIN
Supply Input Voltage Range
VPWR
VPWR = VDD33
TYP
MAX
UNITS
3.4
13.9
V
3.2
3.4
V
±1.0
%
V1 to V6 Threshold Accuracy
V1 to V6 Monitoring Range
Precision Range
0.2
1.2
V
Low Range
0.5
3.0
V
Medium Range
1.0
5.8
V
Table 1. Default Thresholds and GPIO Mappings
Vn_THR_LO
Vn_THR_HI
Default Thresholds
GPIO1
GPIO2
GPIO3
OV
ALERT
UV
CMP
V1
3.2
3.4
Comp_Hi
Comp_Hi
Comp_Lo
Comp_Lo
V2
2.4V
2.6V
Comp_Hi
Comp_Hi
Comp_Lo
Comp_Lo
V3
1.7V
1.9V
Comp_Hi
Comp_Hi
Comp_Lo
Comp_Lo
V4
1.4V
1.6V
Comp_Hi
Comp_Hi
Comp_Lo
Comp_Lo
V5
1.1V
1.3V
Comp_Hi
Comp_Hi
Comp_Lo
Comp_Lo
V6
0.95V
1.05V
Comp_Hi
Comp_Hi
Comp_Lo
Comp_Lo
Table 2. Default GPI Settings
MANUAL RESET
GPI1
GPI2
MARGIN
UVDISABLE
AUX COMP
ü
ü
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 margining (OV and UV) when active (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 and map behavior to a GPIO pin,
and optionally clear the fault history. 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 LTC2936 supervises.
Supervise – The act of quickly responding (compared to
a fault setting) to a voltage condition that is compared to
pre-programmed values.
UV – Undervoltage, the result of a voltage comparison that
a pin voltage is below a programmable threshold voltage.
UVDIS – UV Disable. Ignore UVs 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.
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DEMO MANUAL DC1605B
Theory of Operation
General Description
The LTC2936 is a hex voltage supervisor which detects
an overvoltage or undervoltage and signals the system of
a fault condition. The chip has a dedicated power supply
pin, VPWR, and has an internal 3.3V regulator. The chip
may be powered either by powering VPWR with the onboard 5V supply, with an external 3.4V to 13.9V supply,
or with an external 3.3V supply by tying VPWR and VDD33
pins together.
The Chip
The LTC2936 integrates six voltage supervisors with associated comparator outputs, 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.
In LTpowerPlay, the user programs each voltage supervisor’s range, polarity, mapping, and high and low threshold
voltages.
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 as the 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.
INPUT OPTIONS
INPUT/INPUT
INTERNAL
LOGIC
GPIO
OUTPUT OPTIONS
OUTPUT/OUTPUT WITH OPEN DRAIN
OUTPUT/OUTPUT WITH PULL-UP
SMBALERT (LATCHED) WITH OPEN DRAIN OR WITH PULL-UP
HIGH
COMPARATOR
HIGH THR
SETTING
HIGH FAULT
Vn
LOW THR
SETTING
LOW FAULT
3
GPIO & CMP
MAPPING
(Vn_CONFIG)
6
GPIO1–CPIO3
CMP1–CMP6
LOW
COMPARATOR
GPI1
GPI2
DC1605B F01
Figure 1. Simplified Block Diagram of Voltage Supervisor Input
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DEMO MANUAL DC1605B
Theory of Operation
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 LTC2936 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.
INPUT OPTIONS
MANUAL RESET
MARGIN
UV DISABLE
AUXC (NO PULL-UP)
INTERNAL
LOGIC
GPIO
The Board
The LTC2936 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 LTC2936 and also reads the GPI and GPIO
I2C BUS
GPI2
V1
GPI1
V1-V6, GPI1-2, GPIO1-3
EXT
INT
24-BIT ADC
(LTC2499)
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. Think of the ADC as
a collection of independent voltage readings, whereas the
LTC2936 simply makes a comparison to each of the Vn
input voltages. The simplest demonstration of the DC1605B
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 an easy
quick way to demonstrate the LTC2936’s capabilities.
V2
LTC2936
V3
6-CH VOLTAGE
SUPERVISOR
WITH EEPROM
V4
GPIO1
BLUE/RED
GPIO2
BLUE/RED
GPIO3
BLUE/RED
V5
12-BIT ADC
(LTC2637)
V1-V6
V6
INT 5V,
EXT 3.3V,
OR EXT 4V TO 14V
VPWR
BLUE/RED
VDD33
3.3VOUT
GREEN
I2C BUS
TOPSIDE COMPONENT
BOTTOM COMPONENT
COMP (1:6)
+5V FROM USB
POWER
SWITCH
(LTC4415)
5V
GREEN
5V LDO
(LT1761-5)
POWER JACK
6V TO 14V
Figure 2. Simplified Block Diagram of the DC1605B
DC1605B F02
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DEMO MANUAL DC1605B
Theory of Operation
may notice some lag in the update rate of the displayed
voltages.
Selecting a Device Address
The multichannel DAC emulates a 6-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 V1-V6 jumpers to “INT”
for internal DAC use, and ensure the LTC2936 is powered
by setting JP9 appropriately.
Powering the Board
The DC1605B board can be powered from the DC1613
USB’s 5V power or from a wall-powered 12V supply
(jack). The LTC2936 hex supervisor can be powered in a
number of different ways. The chip itself is powered from
the on-board 5V supply or an external supply. There is a
table silk-screened onto the board as a reminder. If the
USB power or jack power is present, the +5V LED will
illuminate. The LTC2936 can then be powered by setting
the jumper to “INT .” Alternatively set the jumper to “EXT”
to connect an external power supply voltage to the VPWR
turret. With JP9 set to “EXT,” apply an external 3.3V supply. If the jumper is removed, apply an external voltage in
the range 3.4V to 13.9V. 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.
NOTE: Turrets V1-V6 are tied directly to the LTC2936
independent of the jumper settings.
The DC1605B uses a multiplexed ADC that is used to
provide voltage readback values. The telemetry plot in
the GUI is similar to a multichannel oscilloscope which is
capable of displaying any parameter that is displayed in
the telemetry window. 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
The DC1605B has jumpers (JP7, JP8) labeled ASEL0 and
ASEL1 which allow the user to select one of nine I2C addresses. See Table 3.
Table 3. Address Selection of LTC2936
I2C ADDRESS (7-BIT)
ASEL1
POSITION
ASEL0
POSITION
DEFAULT
0x50
L
L
•
0x51
L
Z
0x52
L
H
0x53
Z
L
0x54
Z
Z
0x55
Z
H
0x58
H
L
0x59
H
Z
0x5A
H
H
Regardless of the jumper setting, the part will always
respond to the I2C global 7-bit addresses 0x0C and 0x73.
STATUS_WORD REGISTER
The STATUS_WORD register is a read-only register that
provides a summary of fault status on all six HI and LO
comparator outputs, and are determined by the comparator
threshold/configuration settings and Vn voltages. Faults
may be disabled by setting GPI pins to MARG or UVDIS.
Restoring RAM and GUI from LTC2936
To restore the operating memory (RAM) from the LTC2936
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.
DC1605B LEDs
The DC1605B board has two green LEDs. When USB power
(DC1613 Controller) or external power (6V to 14V jack) is
applied, the +5V green LED will illuminate. The +5V supply
provides power to the support circuitry, not necessarily to
the LTC2936. Jumper JP9 determines how the LTC2936
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DEMO MANUAL DC1605B
Theory of Operation
is powered. The default setting of jumper JP9 is set to
internal 5V and the 3.3V OUT LED will illuminate, indicating
the LTC2936 is powered. If this LED is not illuminated,
the LTC2936 is not in a functioning state, the I2C bus will
not communicate with the GUI, and the LTC2936 will be
grayed out in the system tree.
DC1605B ToolWindow and GUI Indicators
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 (LT2499). Blue indicates a
logic high and red indicates a logic low. The ToolWindow
is automatically populated when LTpowerPlay detects the
DC1605B demo board when it starts. Note that when you
save a project, the DAC settings are saved in the project file.
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DEMO MANUAL DC1605B
LTpowerPlay GUI Software
LTpowerPlay is a powerful Windows-based development
environment that supports Linear Technology power
system management ICs with EEPROM, including the
LTC2936 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
re-loaded at a later time. LTpowerPlay provides unprecedented system level diagnostic and debug features. It
becomes a valuable diagnostic tool during board bring-up
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 DC1605B 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
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DEMO MANUAL DC1605B
Quick Start Procedure
The following procedure describes how to set up a DC1605B
demo system.
1. Download and install the LTpowerPlay GUI: www.linear.
com/ltpowerplay
3. Plug the USB-to-I2C/SMBus/PMBus Controller into a
USB port on your PC. The board should power up with
+5V and +3.3VOUT LEDs illuminated green. The GPIO
and CMP LEDs will illuminate blue.
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 DC1605B board using
the 12-pin ribbon cable.
Figure 4. Connecting DC1605B Board and the DC1613 USB to I2C/SMBus/PMBus Controller
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DEMO MANUAL DC1605B
Quick Start Procedure
4. Launch the LTpowerPlay GUI.
a. The GUI automatically identifies the DC1605B and
builds a system tree for each I2C device. The system
tree on the left hand side will look like this:
Saving a Configuration
You can make changes to the LTC2936 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.
b. A green message box will be displayed momentarily
in the lower left hand corner confirming that the
DC1605B is communicating. The board at this point
is fully operational.
Quick Start Video
There is a Quick Start Video that covers the basic features
of the LTC2936 chip and DC1605B demo board. The video
can be accessed via LTpowerPlay by navigating to the Help
menu > DC1605B Content.
5. Load the Demo Configuration.
In the upper left hand corner of the GUI, select File >
Initialize DC1605B Demo > Demo Config (or Factory
Defaults). This will load the configuration settings into
the working RAM of the LTC2936, 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).
Loading a DC1605B Configuration (*.proj) File
with the GUI
1. In the upper left hand corner of the GUI, File > Open
> browse to your *.proj file. This will load the file into
the GUI.
2. Click on the “Go Online” icon, then click on the “PC →
RAM” icon to write all registers. This loads the configuration into the working RAM of the LTC2936. The DAC
settings are stored and retrieved from the .proj file.
3. To store the configuration to NVM (EEPROM), click on
the “RAM → NVM” icon
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DEMO MANUAL DC1605B
DC1605B Details – Top Side
Figure 5. DC1605B Top Side Details
Table 2. Default Jumper Configuration
REFERENCE
DESIGNATOR
SIGNAL NAME
JP1 – JP6
V1 – V6
JP7, JP8
ASEL1, ASEL0
JP9
VPWR
USAGE
Selects internal vs external voltage
Selects H/Z/L for LTC2936 slave address
Selects internal 5V, external 3.3V, or remove to apply 3.4V to 14V turret.
DEFAULT
INT
L
INT
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DEMO MANUAL DC1605B
Demo Board Use Cases
Use Case #1
A common configuration for the LTC2936 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 LTC2936 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.
tions. 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 double-clicking 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 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 LTC2936 to ignore all UV condidc1605bf
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DEMO MANUAL DC1605B
Demo Board Use Cases
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 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 de-asserted high state.
Apply an external supply voltage to the turret. A sensor
or other moderate source impedance voltage may be
supervised on the Vn inputs. A battery voltage may be
supervised since the LTC2936 supply current is < 700µA.
For example, a +5V external supply may be connected to
turret V1. 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).
Use Case #2
The DC1605B demo board can be configured to supervise
external supply voltages. Inputs V1-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 LTC2936. Please ensure the
maximum ratings on the turrets are not exceeded, most
of which are 6V.
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
overvoltage or undervoltage condition.
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DEMO MANUAL DC1605B
Demo Board Use Cases
Use Case #3
Another common configuration is one that uses a GPIO
pin to drive a system reset. The LTC2936 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
LTC2936
GPI1
MR
SYSTEM
GPIO1
GPIO2
GPIO3
SDA
SCL
GPI2
RST
OV
ALERT
MARG
1. To program GPIO1 to system reset function, first
uncheck the hi_comp mapping of all V1-V6 channels
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 410 ms 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 GPI1 pushbutton is pressed, a system
reset is asserted on GPIO1 and the ALERT is released if
the OV condition is removed.
2. Configure GPI1 as a Manual Reset. Map GPI1 to GPIO1.
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DEMO MANUAL DC1605B
DC1605B Details – Top
TEST POINT TURRETS FOR GPI1–2 SIGNALS
GPI PUSHBUTTON
SWITCHES
SLAVE ADDRESS
JUMPERS
TEST POINT
TURRETS FOR
V1 – V6
TEST POINT
TURRETS FOR
GPO1–3
CMP1-6
HEADER
V1 – V6
JUMPERS
TURRET AND LED
INDICATING 5V POWER
FOR DC1605B
I2C TURRETS
TO DC1613
6V TO 14V
POWER JACK
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DEMO MANUAL DC1605B
DC1605B Details – Bottom
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DEMO MANUAL DC1605B
Parts List
ITEM QTY REFERENCE
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
8 C7, C15, C16, C17, C18, C26, C28, C33
4
3 C20, C21, C25
5
1 C22
6
2 C23, C24
7
3 LED1-LED3, LED6-LED11
8
2 LED4, LED5
9
9 Q1-Q9
10
6 R1-R6
11
10 R7, R10, R25, R27, R48, R67, R70, R73,
R76
12
12 R8, R11, R26, R28, R30, R46, R58, R59,
R68, R71, R74, R77
13
14 R9, R12, R13, R14, R41, R42, R44, R55,
R56, R57, R69, R72, R75, R78
14
2 R15, R16
15
5 R17, R18, R61, R63, R65
16
3 R19, R20, R21
17
6 R22, R23, R24, R62, R64, R66
18
0 R31, R32, R33, R49, R51, R53
(OPTIONAL)
19
8 R34, R35, R36, R37, R38, R50, R52, R54
20
2 R39, R40
21
1 R43
22
1 R45
23
1 R47
24
1 R60
25
1 U2
26
1 U3
27
1 U4
28
1 U5
29
1 U6
30
1 U7
31
1 U8
Hardware: For Demo Board Only
32
1 J1
33
1 J2
34
6 JP1-JP6, JP9
35
1 JP7, JP8
36
1 JP10
37
4 MH1-MH4
38
2 SW1, SW2
39
19 TP1-TP19
40
1 TP20
PART DESCRIPTION
MANUFACTURER/PART NUMBER
IC PROG HEX VOLT SUPERVISOR EEPROM SSOP-24 LINEAR: LTC2936CGN#PBF
CAP CER 10nF 25V 10% X7R 0603
MURATA: GRM188R71E103KA01D
CAP CER 100nF 16V 10% X7R 0603
CAP CER 1µF 16V 10% X7R 0603
CAP CER 22µF 25V 10% X5R 1210
CAP CER 10µF 16V 10% X5R 0805
LED-DUAL-COLOR BLUE-RED SS SMD
LED GREEN SS TYPE BRIGHT SMD
DUAL N-CHANNEL FET2N7002DWA
RES ARRAY 10k/20k 0.1W 0.1% 25ppm 0606 SMD
RES 3k 0.1W 5% 0603 SMD
MURATA: GRM188R71C104KA01D
MURATA: GRM188R71C105KA12D
MURATA: GRM32ER61E226KE15L
MURATA: GRM21BR61C106KE15L
KINGBRIGHT: APHB1608QBDSURKC
PANASONIC-SSG: LNJ326W83RA
DIODES INC.: 2N7002DWA-7
VISHAY: ACASN1002S2002AT
VISHAY: CRCW06033K0OJNEA
RES 1k 0.1W 5% 0603 SMD
VISHAY: CRCW06031K0OJNEA
RES 10k 0.1W 1% 0603 SMD
VISHAY: CRCW060310K0FKEA
RES 402k 0.1W 1% 0603 SMD
RES 200k 0.1W 1% 0603 SMD
RES 604k 0.1W 1% 0603 SMD
RES 100k 0.1W 1% 0603 SMD
RES 0Ω 0.1W 1% 0603 SMD
VISHAY: CRCW0603402KFKEA
VISHAY: CRCW0603200KFKEA
VISHAY: CRCW0603604KFKEA
VISHAY: CRCW0603100KFKEA
RES 0Ω 0.1W 1% 0603 SMD
0Ω RESISTOR ARRAY, 4 RES, 1206
RES 49.9k 0.1W 1% 0603 SMD
RES 249 Ω 0.1W 1% 0603 SMD
RES 9.31k 0.1W 1% 0603 SMD
RES 1.50k 0.1W 1% 0603 SMD
IC ADC 24-BIT DELTA SIGMA 16-CH WITH I2C
IC OP AMP DUAL MICROPOWER
IC DAC 12-BIT OCTAL WITH I2C
IC VREF SERIES PRECISION REFERENCE
FIXED 5V 100mA MICROPOWER LDO
2K-BIT I2C SERIAL EEPROM
DUAL 4A IDEAL DIODES WITH ADJ CURR LMT
VISHAY: CRCW060366K5FKEA
PANASONIC: EXB-38VR000V
VISHAY: CRCW060349K9FKEA
VISHAY: CRCW0603249RFKEA
VISHAY: CRCW06039K31FKEA
VISHAY: CRCW06031K50JNEA
LINEAR: LTC2499CUHF#PBF
LINEAR: LTC6078CMS8
LINEAR: LTC2637CMS-HMX12
LINEAR: LT6654AMPS6-4.096
LINEAR: LT1761ES5-5#PBF
MICROCHIP: 24AA02T-I/OT
LINEAR: LTC4415IMSE#PBF
CONN HEADER 12POS 2mm STR DL PCB
CONN PWR JACK 2.1mm × 5.5mm HIGH CUR
2mm PIN HEADER 1×3
2mm PIN HEADER 1×4
0.100" PIN HEADER 1×6
SPACER STACKING #4 SCREW NYLON
BLK SWITCH TACTILE SPST-NO 0.05A 12V
TERM SOLDER TURRET .219"H .109"L
TERM SOLDER TURRET .156"H .084"L
FCI: 98414-G06-12ULF
CUI INC.: PJ-002AH
SULLINS: NRPN031PAEN-RC
SULLINS: NRPN041PAEN-RC
SULLINS: PRPC006SAAN-RC
KEYSTONE: 8831
C&K: PTS635SL25SMTR LFS
MILL MAX:: 2501-2-00-80-00-00-07-0
MILL MAX: 2308-2-00-80-00-00-07-0
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16
DEMO MANUAL DC1605B
Schematic Diagram
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17
DEMO MANUAL DC1605B
Schematic Diagram
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18
DEMO MANUAL DC1605B
Schematic Diagram
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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.
19
DEMO MANUAL DC1605B
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
dc1605bf
20 Linear Technology Corporation
LT 1014 • 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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