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MAX6897PAZT+T

P1-P3P4-P6P7-P9P10-P12P13-P15
General Description
The MAX6895–MAX6899 is a family of small, low-power,
voltage-monitoring circuits with sequencing capability.
These miniature devices offer tremendous flexibility with
an adjustable threshold capable of monitoring down to
0.5V and an external capacitor-adjustable time delay.
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.
A high-impedance input with a 0.5V threshold allows an
external resistive divider to set the monitored threshold.
The output asserts (OUT = high or OUT = low) when
the input voltage rises above the 0.5V threshold and the
enable input is asserted (ENABLE = high or ENABLE =
low). When the voltage at the input falls below 0.5V or
when the enable input is deasserted (ENABLE = low or
ENABLE = high), the output deasserts (OUT = low or
OUT = high). All devices provide a capacitor-program-
mable delay time from when the input rises above 0.5V
to when the output is asserted. The MAX689_A versions
provide the same capacitor-adjustable delay from when
enable is asserted to when the output asserts. The
MAX689_P devices have a 1µs propagation delay from
when enable is asserted to when the output asserts.
The MAX6895A/P offers an active-high enable input
and an active-high push-pull output. The MAX6896A/P
offers an active-low enable input and an active-low
push-pull output. The MAX6897A/P offers an active-
high enable input and an active-high open-drain output.
Finally, the MAX6898A/P offers an active-low enable
input and an active-low open-drain output. The
MAX6899A/P offers an active-low enable with an active-
high push-pull output.
All devices operate from a 1.5V to 5.5V supply voltage
and are fully specified over the -40°C to +125°C operat-
ing temperature range. These devices are available in
ultra-small 6-pin µDFN (1.0mm x 1.5mm) and thin
SOT23 (1.60mm x 2.90mm) packages.
Applications
Automotive Computers/Servers
Medical Equipment Critical µP Monitoring
Intelligent Instruments Set-Top Boxes
Portable Equipment Telecom
Features
♦ 1.8% Accurate Adjustable Threshold Over
Temperature
♦ Operate from V
CC
of 1.5V to 5.5V
♦ Capacitor-Adjustable Delay
♦ Active-High/-Low Enable Input Options
♦ Active-High/-Low Output Options
♦ Open-Drain (28V Tolerant)/Push-Pull Output
Options
♦ Low Supply Current (10µA, typ)
♦ Fully Specified from -40°C to +125°C
♦ Ultra-Small 6-Pin µDFN Package or Thin SOT23
Package
MAX6895–MAX6899
Ultra-Small, Adjustable
Sequencing/Supervisory Circuits
________________________________________________________________
Maxim Integrated Products
1
123
654
OUT
( ) FOR MAX6899 ONLY.
V
CC
CDELAY
ENABLE
(ENABLE)
INGND
MAX6895
MAX6897
MAX6899
µDFN
TOP VIEW
Pin Configurations
Ordering Information
19-3673; Rev 8; 7/11
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
Pin Configurations continued at end of data sheet.
Ordering Information continued at end of data sheet.
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
PART PIN-PACKAGE TOP MARK
MAX6895AALT+
6 µDFN
+AW
MAX6895AAZT+ 6 Thin SOT23 +AADK
MAX6895PALT+T
6 µDFN
+AX
MAX6895PAZT+ 6 Thin SOT23 +AADL
MAX6896AALT+
6 µDFN
+AY
MAX6896AAZT+ 6 Thin SOT23 +AADO
MAX6896AAZT/V+T 6 Thin SOT23 +AATA
MAX6896PALT+T
6 µDFN
+AZ
MAX6896PAZT+ 6 Thin SOT23 +AADP
MAX6896PAZT/V+T 6 Thin SOT23
MAX6895–MAX6899
Ultra-Small, Adjustable
Sequencing/Supervisory Circuits
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= 1.5V to 5.5V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at V
CC
= 3.3V and T
A
= +25°C, unless
otherwise noted.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
, ENABLE, ENABLE, IN....................................-0.3V to +6V
OUT, OUT (push-pull) ................................-0.3V to (V
CC
+ 0.3V)
OUT, OUT (open-drain)..........................................-0.3V to +30V
CDELAY......................................................-0.3V to (V
CC
+ 0.3V)
Output Current (all pins) ...................................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin µDFN (derate 2.1mW/°C above +70°C)...........167.7mW
6-Pin Thin SOT23 (derate 9.1mW/°C above +70°C) ...727.3mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SUPPLY
Operating Voltage Range V
CC
1.5 5.5 V
Undervoltage Lockout (Note 3) UVLO V
CC
falling 1.20 1.35 V
V
CC
Supply Current I
CC
V
CC
= 3.3V, no load 10 20 µA
IN
Threshold Voltage V
TH
V
IN
rising, 1.5V < V
CC
< 5.5V 0.491 0.5 0.509 V
Hysteresis V
HYST
V
IN
falling 5 mV
Input Current (Note 4) I
IN
V
IN
= 0V or V
CC
-15 +15 nA
CDELAY
Delay Charge Current I
CD
200 250 300 nA
Delay Threshold V
TCD
CDELAY rising 0.95 1.00 1.05 V
CDELAY Pulldown Resistance R
CDELAY
130 500 Ω
ENABLE/ENABLE
Input Low Voltage V
IL
0.4 V
Input High Voltage V
IH
1.4 V
Input Leakage Current I
LEAK
ENABLE, ENABLE = V
CC
or GND -100 +100 nA
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four
layer board. For detailed information on package thermal considerations refer to www.maxim-ic.com/thermal-tutorial
.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
µDFN
Junction-to-Ambient Thermal Resistance (θ
JA
)...............477°C/W
Junction-to-Case Thermal Resistance (θ
JC
)......................122°C/W
Thin SOT23
Junction-to-Ambient Thermal Resistance (θ
JA
)................110°C/W
Junction-to-Case Thermal Resistance (θ
JC
).......................50°C/W
MAX6895–MAX6899
Ultra-Small, Adjustable
Sequencing/Supervisory Circuits
_______________________________________________________________________________________ 3
Note 2: All devices are production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 3: When V
CC
falls below the UVLO threshold, the outputs will deassert (OUT goes low, OUT goes high). When V
CC
falls below
1.2V, the out annot be determined.
Note 4: Guaranteed by design.
Note 5: During the initial power-up, V
CC
must exceed 1.5V for at least 2ms before the output is guaranteed to be in the correct state.
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 1.5V to 5.5V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at V
CC
= 3.3V and T
A
= +25°C, unless
otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OUT/OUT
V
CC
≥ 1.2V, I
SINK
= 90µA,
MAX6895/MAX6897/MAX6899 only
0.3
V
CC
≥ 2.25V, I
SINK
= 0.5mA 0.3
Output Low Voltage (Open-Drain
or Push-Pull)
V
OL
V
CC
≥ 4.5V, I
SINK
= 1mA 0.4
V
V
CC
≥ 2.25V, I
SOURCE
= 500µA
0.8 x
V
CC
Output High Voltage (Push-Pull) V
OH
V
CC
≥ 4.5V, I
SOURCE
= 800µA
0.8 x
V
CC
V
Output Open-Drain Leakage
Current
I
LKG
Output high impedance, V
OUT
= 28V 1 µA
TIMING
C
CDELAY
= 0µF 40 µs
t
DELAY
V
IN
rising
C
CDELAY
= 0.047µF 190 ms
IN to OUT/OUT Propagation
Delay
t
DL
V
IN
falling 16 µs
Startup Delay (Note 5) 2ms
ENABLE/ENABLE Minimum Input
Pulse Width
t
PW
1µs
ENABLE/ENABLE Glitch
Rejection
100 ns
ENABLE/ENABLE to OUT/OUT
Delay
t
OFF
From device enabled to device disabled 150 ns
t
PROPP
From device disabled to device enabled
(P version)
150 ns
C
CDELAY
= 0µF 20 µs
ENABLE/ENABLE to OUT/OUT
Delay
t
PROPA
From device disabled
to device enabled
(A version)
C
CDELAY
= 0.047µF 190 ms
P1-P3P4-P6P7-P9P10-P12P13-P15

MAX6897PAZT+T

Mfr. #:
Buy MAX6897PAZT+T
Manufacturer:
Maxim Integrated
Description:
Supervisory Circuits Adjustable Sequencer/Supervisor
Lifecycle:
New from this manufacturer.
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