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MAX16012 데이터시트 PDF




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부품번호 MAX16012 기능
기능 (MAX16010 - MAX16014) Overvoltage Protection/Detection Circuits
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MAX16012 데이터시트, 핀배열, 회로
19-3693; Rev 2; 1/07
Ultra-Small, Overvoltage Protection/
Detection Circuits
General Description
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 automotive,
telecom, and industrial applications. These devices oper-
ate 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 noninverting
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
www.DataSheet4U.comconditions. One MOSFET (P1) eliminates the need for
external diodes, thus minimizing the input voltage drop.
The second MOSFET (P2) isolates the load or regulates
the output voltage during an overvoltage condition. The
MAX16014 keeps the MOSFET (P2) latched off until the
input power is cycled.
The MAX16010 and MAX16011 are available in small
8-pin TDFN packages, while the MAX16012/MAX16013/
MAX16014 are available in small 6-pin TDFN packages.
These devices are fully specified from -40°C to +125°C.
Applications
Automotive
Industrial
48V Telecom/Server/Networking
FireWire®
Notebook Computers
Multicell Battery-Stack Powered Equipment
FireWire is a registered trademark of Apple Computer, Inc.
Pin Configurations appear at end of data sheet.
Features
Wide 5.5V to 72V Supply Voltage Range
Open-Drain Outputs Up to 72V
(MAX16010/MAX16011/MAX16012)
Fast 2µs (max) Propagation Delay
Internal Undervoltage Lockout
p-Channel MOSFET Latches Off After an
Overvoltage Condition (MAX16014)
Adjustable Overvoltage Threshold
-40°C to +125°C Operating Temperature Range
Small 3mm x 3mm TDFN Package
Ordering Information
PART*
PIN-
TEMP RANGE PACKAGE
PKG
CODES
MAX16010TA_-T -40°C to +125°C 8 TDFN-EP** T833-2
MAX16011TA_-T -40°C to +125°C 8 TDFN-EP** T833-2
MAX16012TT-T -40°C to +125°C 6 TDFN-EP** T633-2
MAX16013TT-T -40°C to +125°C 6 TDFN-EP** T633-2
MAX16014TT-T -40°C to +125°C 6 TDFN-EP** T633-2
Note: Replace the “_” with “A” for 0.5% hysteresis, “B” for 5%
hysteresis, and “C” for 7.5% hysteresis.
*Replace -T with +T for lead-free packages.
**EP = Exposed pad.
Typical Operating Circuit
VBATT
P1
P2
*OPTIONAL
2M*
VCC
GATE1
GATE2
R1
MAX16013
SET MAX16014
R2
GND
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.




MAX16012 pdf, 반도체, 판매, 대치품
Ultra-Small, Overvoltage Protection/
Detection Circuits
Typical Operating Characteristics (continued)
(VIN = 14V, TA = +25°C, unless otherwise noted.)
UVLO THRESHOLD
vs. TEMPERATURE
5.5
INA+/INB-/SET = GND
5.4 EN = VCC
5.3
5.2
5.1
5.0 RISING
4.9
4.8
4.7
4.6 FALLING
4.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
INA+/INB-/SET THRESHOLD
vs. TEMPERATURE
1.30
INA+/INB-/SET RISING
1.29 EN = VCC
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
GATE VOLTAGE
vs. TEMPERATURE
10.0
MAX16013/MAX16014
9.9 SET = GND, EN = VCC
9.8
9.7
9.6
9.5
9.4
9.3
9.2
9.1
9.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
STARTUP WAVEFORM
(ROUT = 100, CIN = 10µF, COUT = 10nF)
MAX16010 toc07
VCC
10V/div
STARTUP WAVEFORM
(ROUT = 100, CIN = 10µF, COUT = 10nF)
MAX16010 toc08
VCC
1V/div
200µs/div
VGATE
5V/div
VOUT
10V/div
VGATE
10V/div
20µs/div
VOUT
10V/div
VEN = 0 TO 2V
OVERVOLTAGE SWITCH FAULT
(ROUT = 100, CIN = 80µF, COUT = 10nF)
MAX16010 toc09
VCC
20V/div
VGATE
20V/div
OVERVOLTAGE LIMIT
(ROUT = 100, CIN = 80µF, COUT = 10nF)
MAX16010 toc10
VCC
20V/div
VGATE
20V/div
VIN = 12V TO 40V, TRIP THRESHOLD = 28V
1ms/div
VOUT
20V/div
VIN = 12V TO 40V
TRIP THRESHOLD = 28V
VOUT
20V/div
1ms/div
4 _______________________________________________________________________________________

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MAX16012 전자부품, 판매, 대치품
Ultra-Small, Overvoltage Protection/
Detection Circuits
VBATT
R1 VCC
IN+
RPULLUP
R2
REF MAX16012 OUT
OUT
IN-
GND
VBATT
P1
P2
VCC
GATE1
GATE2
MAX16013
SET
GND
R1
R2
Figure 2. Typical Operating Circuit for the MAX16012
Figure 3. Overvoltage Limiter Protection
The MAX16013/MAX16014 can be configured as an
overvoltage switch controller to turn on/off a load (see
the Typical Application Circuit). When the programmed
overvoltage threshold is tripped, the internal fast com-
parator turns off the external p-channel MOSFET (P2),
pulling GATE2 to VCC to disconnect the power source
from the load. When the monitored voltage goes below
the adjusted overvoltage threshold, the MAX16013
enhances GATE2, reconnecting the load to the power
source (toggle ENABLE on the MAX16014 to reconnect
the load). The MAX16013 can be configured as an
overvoltage limiter switch by connecting the resistive
divider to the load instead of VCC (Figure 3). See the
Overvoltage Limiter section.
Supply Voltage
Connect a 5.5V to 72V supply to VCC for proper opera-
tion. For noisy environments, bypass VCC to GND with a
0.1µF or greater capacitor. When VCC falls below the
UVLO voltage the following states are present (Table 1).
Table 1. UVLO State (VCC < VUVLO)
PART OUTA
OUTB
MAX16010 Low Low
OUT GATE2
——
MAX16011
Low
Low, LOGIC = low
High, LOGIC = high
MAX16012 —
— Low —
MAX16013
MAX16014
— High
Hysteresis
Hysteresis adds noise immunity to the voltage monitors
and prevents oscillation due to repeated triggering
when the monitored voltage is near the threshold trip
voltage. The hysteresis in a comparator creates two trip
points: one for the rising input voltage (VTH+) and one
for the falling input voltage (VTH-). These thresholds are
shown in Figure 4.
Enable Inputs (EN or EN)
The MAX16011 offers an active-high enable input (EN),
while the MAX16010 offers both an active-high enable
input (EN) and active-low enable input (EN). For the
MAX16010, drive EN low or EN high to force the output
low. When the device is enabled (EN = high and EN =
low) the state of OUTA and OUTB depends on INA+
and INB- logic states.
VHYST
VTH+
VIN+
VTH-
VCC
VOUT
0V
tPROP
tPROP
Figure 4. Input and Output Waveforms
tPROP
_______________________________________________________________________________________ 7

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