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MAX6791TP

产品描述High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions
文件大小2MB,共24页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
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MAX6791TP概述

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions

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EVALUATION KIT AVAILABLE
MAX6791–MAX6796
General Description
High-Voltage, Micropower, Single/Dual
Linear Regulators with Supervisory Functions
● Low 68μA Quiescent Current
Wide 5V to 72V Supply Voltage Range
● Output Current
• Single Output Up to 300mA
• Dual Outputs Up to 150mA per Output
Low Dropout Voltage
420mV (typ) at 100mA (Single)
840mV (typ) at 100mA (Dual)
● Fixed Output-Voltage Options: 5V, 3.3V, 2.5V, 1.8V,
or Adjustable Output (From 1.8V to 11V)
ENABLE and HOLD Functionality
RESET
Output: Open-Drain or Push-Pull
● Internally Fixed (35μs, 3.125ms, 12.5ms, 50ms, or
200ms) or Capacitor-Adjustable Reset Timeout Periods
● Internally Fixed or Capacitor-Adjustable
Watchdog Timeout Periods
● Windowed (Minimum/Maximum) Watchdog Timer
Options (MAX6791/MAX6792)
Watchdog Disable Feature
● Thermal, Short-Circuit, and Output Overvoltage
Protection
● Fully Specified from -40°C to +125°C
● Small, Thermally Enhanced, 5mm x 5mm TQFN
● AEC-Q100
Qualified
MAX6795TPLD2/V+,
MAX6795TPSD2/V+
The
MAX6791–MAX6796
ultra-low-quiescent-
current, single/dual-output linear regulators are ideal for
automotive applications. The devices offer a wide 5V to
72V operating input range, allowing them to withstand
automotive load-dump conditions while consuming only
68μA. The MAX6791–MAX6794 are dual-output regulators
capable of supplying up to 150mA per output. The
MAX6795/MAX6796 offer a single output capable of
delivering up to 300mA. These devices offer standard
output-voltage options (5V, 3.3V, 2.5V, or 1.8V) and
can be adjusted to any voltage from 1.8V to 11V. The
MAX6791–MAX6794 also offer a fixed 5V output.
All devices feature a push-pull or open-drain, active-
low
RESET
output with a fixed output reset threshold
that is 92.5%/87.5% of the regulator output OUT/OUT1.
The reset output asserts low when OUT/OUT1 drops
below the reset threshold and remains low for the fixed
or capacitor-adjustable reset timeout period after OUT/
OUT1 exceeds the reset threshold.
The MAX6791–MAX6796 provide a watchdog input that
monitors a pulse train from the microprocessor (μP) and
generates reset pulses if the watchdog input remains high
or low for a duration longer than the watchdog timeout
period. All devices are available with either a fixed watch-
dog timeout period of 280ms (min) or a period adjustable
with an external capacitor. The MAX6791/MAX6792
feature a windowed watchdog timeout period with selectable
window ratio. The watchdog feature can be disabled.
The MAX6791–MAX6794 provide dual enable inputs
(ENABLE1 and ENABLE2) that control each regulator
independently. The single-output MAX6795/MAX6796
feature one enable input (ENABLE).
All devices include a hold input (HOLD) that aids the
implementation of a self-holding circuit without requiring
external components. Once the regulator is enabled,
setting
HOLD
low forces the regulator to remain on even
if ENABLE/ENABLE1 is subsequently set low. Releasing
HOLD
shuts down the regulator.
The MAX6791–MAX6796 are available in a small,
thermally enhanced TQFN package. The 5mm x 5mm
package dissipates up to 2.7W, supporting continuous
regulator operation during high ambient temperatures,
high battery voltage, and high load-current conditions.
The MAX6791–MAX6796 are specified for a -40°C to
+125°C operating temperature range.
Benefits and Features
Ordering Information
PART
MAX6791TP_D
_+
MAX6792TP_D
_+
MAX6793TP_
D_+
MAX6794TP_
D_+
MAX6795TP_
D_+
MAX6795TP_D _/V+
MAX6795TPLD2/V+
MAX6795TPSD2/V+
MAX6796TP_D
_+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
20 TQFN-EP*
Applications
Automotive
+Denotes lead-free package.
For tape-and-reel, add a T after the “+.” Tape-and-reel are
offered in 2.5k increments. The first placeholder “_” designates
preset output-voltage option and preset reset threshold level;
see Table 1. The second placeholder “_” designates the reset
timeout period; see Table 2. For example, the MAX6791TPSD3+
indicates a 3.3V output voltage with a reset threshold of 87.5%
at nominal voltage and a 50ms reset timeout period. Samples
are generally held in stock. Nonstandard versions require a 2.5k
minimum order quantity.
/V Denotes an automotive-qualified part.
*EP = Exposed pad.
Typical Application Circuit, Pin Configurations,
and
Selector Guide
appear at end of data sheet.
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