Linear Technology DC1605B, Demo Manual

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dc1605bf
DEMO MANUAL DC1605B
performance summary
Specifications are valid over the full operating temperature range.
Common Characteristics
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Input Voltage Range V
PWR
3.4 13.9 V
V
PWR
= V
DD33
3.2 3.4 V
V1 to V6 Threshold Accuracy ±1.0 %
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
V n _THR_LO V n _THR_HI GPIO1 GPIO2 GPIO3 CMP
Default Thresholds OV ALERT UV
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 MARGIN UVDISABLE AUX COMP
GPI1
ü
GPI2
ü
The following list contains terms used throughout the
document.
AUXC – Auxiliary Comparator. A GPI pin may be pro-
grammed to this function and map behavior to a GPIO
pin. Nominal V
TH
= 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 sensi-
tivity/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 V
TH
= 1.0V.
Glossary of terms
MR – Manual Reset, Active Low. A GPI pin may be pro-
grammed to this function and map behavior to a GPIO pin,
and optionally clear the fault history. Nominal V
TH
= 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 V
TH
= 1.0V.