DS1830U Maxim Integrated Products, DS1830U Datasheet - Page 2

• Manufacturer Part Number: DS1830U
• Description: IC SEQUENCER RESET PB 5V 8-USOP
• Manufacturer: Maxim Integrated Products
• Type: Sequencerr

Specifications of DS1830U

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: Adjustable/Selectable
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

OPERATION — POWER MONITOR
The DS1830 provides the functions of detecting out-of-tolerance conditions on a power supply and
warning a processor based system of impending power failure. When V
all reset outputs will be forced active. When V
period of time based on the condition of the TD input. Reset outputs
one at the proper delays for the condition of the TD input. All resets will remain in the inactive state
(high) until the next V
active for an appropriate period determined by the status of the TD input after the power supply inputs
have reached the selected tolerance. This allows the power supply and system power to stabilize before
the reset sequences are released.
BLOCK DIAGRAM Figure 1
OPERATION — TOLERANCE SELECT
The DS1830/A provides a TOL input for individual customization of the DS1830x to specific application
requirements (see Table 1). For the tolerance selection, see Table 1 below. The TOL input is only
sampled while V
exceeds the lowest potential trip value.
TOL — TOLERANCE SELECT Table 1
TOL
V
GND
OPEN
(N.C.)
CC
CC
5V (DS1830)
is below the lowest potential trip value and can not be changed after the V
10%
15%
CC
5%
out-of-tolerance condition or pushbutton reset. On power-up all resets are kept
3.3V (DS1830A)
10%
20%
5%
CC
2 of 7
returns to a valid state,
RST2
CC
is detected as out-of-tolerance
and
RST1
RST3
will remain active for
follow
RST1
CC
voltage
, each