Datasheet

MAX6892/MAX6893/MAX6894
Pin-Selectable, Octal/Hex/Quad, Power-Supply
Sequencers/Supervisors
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN1
= V
IN6
–V
IN8
= V
GND
, V
IN2
–V
IN5
= 2.7V to 5.5V, WDI = ENABLE = GND, TH0–TH4 = MARGIN = MR = DBP, T
A
= -40°C to
+85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Notes 1, 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.
(All voltages referenced to GND.)
PG_, RESET, WDO .................................................-0.3V to +14V
IN1–IN8, TH0–TH4, ENABLE, WDI, MR, MARGIN,
SRT, SWT, V
CC
.....................................................-0.3V to +6V
DBP ..........................................................................-0.3V to +3V
Input/Output Current (all pins)..........................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
28-Pin Thin QFN (derate 21.3mW/°C
above +70°C).............................................................1702mW
32-Pin Thin QFN (derate 21.3mW/°C
above +70°C)............................................................1702mW
Maximum Junction Temperature .....................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-Free..............................................................+260°C
Containing Lead (Pb)...................................................+240°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Voltage Range
(Note 3)
Voltage on either one of IN2–IN5 or V
CC
that
guarantees the part is fully operational
2.7 5.5 V
Undervoltage Lockout V
UVLO
For 1V < (V
IN2–
V
IN5
or V
CC
) < V
UVLO
,
PG_ are pulled down to GND with a 10µA
current
2.5 V
Digital Bypass Voltage V
DBP
No load
2.48 2.55 2.67
V
Supply Current I
CC
V
IN2
= 5.5V, V
IN1
, V
IN3–
V
IN8
= V
GND
, no
load
0.9 1.1 mA
T
A
= +25°C to +85°C -1 +1
Threshold Accuracy (Table 2) V
TH
IN1–IN8,
IN_ falling
T
A
= -40°C to +85°C -2 +2
% V
TH
Threshold Hysteresis
V
TH-HYS
0.3
% V
TH
Threshold Tempco
ΔV
TH
/°C
10
ppm/°C
IN1, IN6–IN8
Input Leakage Current I
IN
IN2–IN5 set as adjustable thresholds
-50
+50
nA
IN2–IN5 Input Impedance
R
IN2–IN5
For IN_ voltages < the highest IN_ supply or
< V
CC
and thresholds are not set as
adjustable
290 400 555
kΩ
Power-Up Delay t
D-PO
V
CC
≥ V
UVLO
3ms
IN_ to PG_ Delay t
D-R
IN_ falling/rising, 100mV overdrive 25 µs
PG_ Timeout Period t
PG
5.625 6.25 6.875
ms
RESET Default Timeout Period t
RP
V
SRT
= V
CC
180 200 220
ms
RESET Adjustable Timeout Period
t
RP-ADJ
C
SRT
= 47nF
135 207 280
ms
SRT Adjustable Timeout Current I
SRT
V
SRT
= V
GND
180 230 280
nA