MAX16042TP+ Maxim Integrated Products, MAX16042TP+ Datasheet - Page 10

• Manufacturer Part Number: MAX16042TP+
• Description: IC SUPERVISOR CIRC TRPL 20TQFN
• Manufacturer: Maxim Integrated Products
• Type: Sequencerr

Specifications of MAX16042TP+

• Number Of Voltages Monitored: 3
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms/Adjustable Minimum
• Voltage - Threshold: 9 Selectable Threshold Combinations
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN Exposed Pad
• Undervoltage Threshold: Adjustable
• Overvoltage Threshold: Adjustable
• Manual Reset: Resettable
• Watchdog: No Watchdog
• Supply Voltage (max): 28 V
• Supply Voltage (min): 2.2 V
• Supply Current (typ): 52 uA
• Maximum Power Dissipation: 2051 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The following equation is provided to help estimate the
value of the resistors based on the amount of acceptable
error:
where e
absolute resistive divider error attributable to the input
leakage current (use 0.01 for ±1%), V
at which the output (OUT_) should assert, and I
worst-case IN_ leakage current (see the Electrical
Characteristics ). Calculate R2 as follows:
Connect any unused IN_ and EN_ inputs to V
Dual-/Triple-/Quad-Voltage, Capacitor-
Adjustable, Sequencing/Supervisory Circuits
Figure 3. Setting the Adjustable Input
10
V
INTH
______________________________________________________________________________________
R1
R2
A
is the fraction of the maximum acceptable
IN_
R
R
2
1 =
=
V
V
TH
e
INTH
V
A
TH
×
I
L
V
×
−
INTH
R
V
1
TH
R1 = R2 x
INTH
Unused Inputs
MAX16041
MAX16042
MAX16043
(
is the voltage
V
V
CC
INTH
TH
.
-1
)
L
is the
The MAX16041/MAX16042/MAX16043 feature open-drain
outputs. An OUT_ goes low when its respective IN_ input
voltage drops below its specified threshold or when its
EN_ goes low (see Table 1). OUT_ goes high when EN_
is high and V
Open-drain outputs require an external pullup resistor to
any voltage from 0 to 28V.
RESET asserts low when any of the monitored voltages
(IN_) falls below its respective threshold, any EN_ goes
low, or MR is asserted. RESET remains asserted for the
reset timeout period after all of the monitored voltages
exceed their respective thresholds, all EN_ are high, all
OUT_ are high, and MR is deasserted. All devices have
a push-pull, active-low reset output.
Table
* When V
of the state of EN_ and V
in the correct state for V
Table
Low/Low
Low/High
Low/Open
High/Low
High/High
High/Open
Open/Low
Open/High
Open/Open
TH1/TH0
LOGIC
High
High
EN_
Low
Low
CC
1. Output State*
2. Input-Voltage Threshold Selector
falls below the UVLO, all outputs go low regardless
VERSIONS)
IN_
IN1 (ALL
Adj
(V)
3.3
3.3
3.3
3.3
2.5
3.3
3.3
2.5
is above its threshold after a time delay.
V
V
V
V
IN_
IN_
IN_
IN_
CC
IN_
IN_
VERSIONS)
< V
< V
> V
> V
down to 1.2V.
IN2 (ALL
. The outputs are guaranteed to be
Adj
Adj
Adj
Adj
TH
TH
TH
TH
(V)
2.5
1.8
1.5
1.2
1.8
Low
Low
Low
OUT_ = high impedance
(MAX16042)
RESET Output
IN3
Adj
Adj
Adj
Adj
Adj
Adj
(V)
1.8
1.8
2.5
OUT_ Output
OUT_
(MAX16043)
IN4
Adj
Adj
Adj
Adj
Adj
Adj
Adj
(V)
1.5
2.5