MAX16053 Maxim Integrated Products, MAX16053 Datasheet - Page 8

• Manufacturer Part Number: MAX16053
• Description: High-Voltage Adjustable Sequencing/Supervisory Circuits
• Manufacturer: Maxim Integrated Products

High-Voltage, Adjustable
Sequencing/Supervisory Circuits
Figure 2. Simplified Functional Diagram
The MAX16052/MAX16053 family of high-voltage,
sequencing/supervisory circuits provide adjustable
voltage monitoring for inputs down to 0.5V. These
devices are ideal for use in power-supply sequencing,
reset sequencing, and power-switching applications.
Multiple devices can be cascaded for complex
sequencing applications.
The MAX16052/MAX16053 perform voltage monitoring
using a high-impedance input (IN) with an internally
fixed 0.5V threshold. When the voltage at IN falls below
0.5V or when the enable input is deasserted (EN = low)
OUT goes low. When V
enable input is asserted (EN = high), OUT goes high
after a capacitor-adjustable time delay.
With V
turn on or off the output. Table 1 details the output state
depending on the various input and enable conditions.
8
EN
IN
_______________________________________________________________________________________
IN
0.5V
above 0.5V, the enable input can be used to
REF
250nA
CDELAY
Detailed Description
1.0V
IN
V
INTERNAL
CC
CONTROL
V
LOGIC
/UVLO
rises above 0.5V and the
CC
MAX16052
OUT
GND
The device operates with a V
2.25V to 16V. In order to maintain a 1.8% accurate
threshold at IN, V
falls below the UVLO threshold, the output deasserts
low. When V
guaranteed. For noisy systems, connect a 0.1µF
ceramic capacitor from V
device as possible.
Table 1. MAX16052/MAX16053
EN
IN
V
V
V
V
IN
IN
IN
IN
IN
< V
< V
> V
> V
0.5V
TH
TH
TH
TH
CC
REF
250nA
falls below 1.2V, the output state is not
CC
CDELAY
must be above 2.25V. When V
High
High
Low
Low
1.0V
EN
INTERNAL
V
CC
CONTROL
LOGIC
V
CC
/UVLO
CC
to GND as close to the
CC
Supply Input (V
OUT = V
OUT = High Impedance
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supply voltage from
MAX16053
(MAX16052)
CC
OUT
Low
Low
Low
(MAX16053)
OUT
GND
CC
CC
)