MAX16010TAC+T Maxim Integrated Products, MAX16010TAC+T Datasheet - Page 6

• Manufacturer Part Number: MAX16010TAC+T
• Description: IC OVERVOLTAGE PROT/DETEC 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Multi-Voltage Supervisorr

Specifications of MAX16010TAC+T

• Number Of Voltages Monitored: 2
• Output: Open Drain or Open Collector
• Reset: Active Low
• Voltage - Threshold: Adjustable/Selectable
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Undervoltage Threshold: 1.215 V, 1.12 V
• Overvoltage Threshold: 1.18 V, 1.265 V
• Output Type: Active Low, Open Drain
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage (max): 72 V
• Supply Voltage (min): 5.5 V
• Supply Current (typ): 25 uA
• Maximum Power Dissipation: 1455 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX16010–MAX16014 is a family of ultra-small, low-
power, overvoltage protection circuits for high-voltage,
high-transient systems such as those found in automo-
tive, telecom, and industrial applications. These devices
operate over a wide 5.5V to 72V supply voltage range,
making them also suitable for other applications such as
battery stacks, notebook computers, and servers.
The MAX16010 and MAX16011 offer two independent
comparators for monitoring both undervoltage and
overvoltage conditions. These comparators offer open-
drain outputs capable of handling voltages up to 72V.
The MAX16010 features complementary enable inputs
(EN/EN), while the MAX16011 features an active-high
enable input and a selectable active-high/low OUTB
output.
The MAX16012 offers a single comparator and an inde-
pendent reference output. The reference output can be
directly connected to either the inverting or noninvert-
ing input to select the comparator output logic.
The MAX16013 and MAX16014 are overvoltage protec-
tion circuits that are capable of driving two p-channel
MOSFETs to prevent reverse battery and overvoltage
conditions. One MOSFET (P1) eliminates the need for
external diodes, thus minimizing the input voltage drop.
While the second MOSFET (P2) isolates the load or reg-
ulates the output voltage during an overvoltage condi-
tion. The MAX16014 keeps the MOSFET (P2) latched
off until the input power is cycled.
Ultra-Small, Overvoltage Protection/
Detection Circuits
Figure 1. MAX16010 Monitor Circuit
6
_______________________________________________________________________________________
+48V
R1
R2
R3
INA+
INB-
EN
MAX16010
GND
Detailed Description
V
EN
CC
OUTA
OUTB
EN
REGULATOR
DC-DC
IN
The MAX16010/MAX16011 include undervoltage and
overvoltage comparators for window detection (see
Figure 1). OUT_ asserts high when the monitored volt-
age is within the selected “window.” OUTA asserts low
when the monitored voltage falls below the lower
(V
the monitored voltage exceeds the upper limit
(V
enabling the DC-DC converter when the monitored volt-
age is in the selected window.
The resistor values R1, R2, and R3 can be calculated
as follows:
where R
Use the following steps to determine the values for R1,
R2, and R3.
1) Choose a value for R
2) Calculate R3 based on R
3) Calculate R2 based on R
4) Calculate R1 based on R
The MAX16012 has both inputs of the comparator avail-
able with an integrated 1.30V reference (REF). When the
voltage at IN+ is greater than the voltage at IN- then OUT
goes high. When the voltage at IN- is greater than the
voltage at IN+ then OUT goes low. Connect REF to IN+
or IN- to set the reference voltage value. Use an external
resistive divider to set the monitored voltage threshold.
TRIPLOW
TRIPHIGH
R3. Because the MAX16010/MAX16011 have very
high input impedance, R
upper trip point:
lower trip point:
TOTAL
) limit of the window, or OUTB asserts low if
V
). The application in Figure 1 shows OUT_
V
R
TRIPLOW
TRIPHIGH
2
= R1 + R2 + R3.
R
=
3 =
R1 = R
V
TH
V
=
V
−
TOTAL
=
TH
TRIPLOW
TOTAL
×
V
V
+
V
TH
TOTAL
TRIPHIGH
TOTAL
TH
TOTAL
R
×
−
TOTAL
, the sum of R1, R2, and
- R2 - R3
+
TOTAL
Voltage Monitoring
R
⎛
⎜
⎝
⎛
⎜
⎝
TOTAL
R
, R3, and R2:
can be up to 5MΩ.
R
R
, R3, and the desired
2
TOTAL
TOTAL
R
+
−
and the desired
3
R
R
3
3
⎞
⎟
⎠
⎞
⎟
⎠