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MAX6427ORUR+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
MAX6427–MAX6438
Low-Power, Single/Dual-Level Battery Monitors
with Hysteresis
4 _______________________________________________________________________________________
Note 1: Production testing done at T
A
= +25°C, limits over temperature guaranteed by design only.
Note 2: Percentage of selected factory-fixed HTH- or LTH- threshold voltage.
Note 3: Percentage of 1.05
✕
(selected factory-fixed threshold voltage).
Note 4: Percentage of 615mV voltage reference.
Note 5: Percentage of 585mV voltage reference.
Note 6: Guaranteed by design.
Note 7: V
SUPPLY
is BATT or V
DD
.
ELECTRICAL CHARACTERISTICS (continued)
(BATT = 1.0V to 5.5V or V
DD
= 1.6V to 5.5V, T
A
= -40°C to +85°C, unless otherwise specified. Typical values are at T
A
= +25°C.)
(Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
LOW-BATTERY OUTPUTS (LBO, LBO, LBOH, LBOH, LBOL, LBOL )
Timeout Period t
LBOP
BATT or V
DD
/HTHIN/LTHIN rising above
threshold
140 210 280
ms
Delay t
LBOD
BATT or V
DD
/HTHIN/LTHIN falling below
threshold
100
µs
BATT or V
DD
≥ 1.6V, I
SINK
= 100µA,
asserted low
0.3
BATT or V
DD
≥ 2.7V, I
SINK
= 1.2mA,
asserted low
0.3
LBO/LBOL/LBOH Output LOW
(Push-Pull or Open-Drain)
V
OL
BATT or V
DD
≥ 4.5V, I
SINK
= 3.2mA,
asserted low
0.4
V
BATT or V
DD
≥ 1.6V, I
SOURCE
= 200µA,
deasserted
0.8 × V
SUPPLY
BATT or V
DD
≥ 2.7V, I
SOURCE
= 500µA,
deasserted
0.8 × V
SUPPLY
LBO Output HIGH (Push-Pull
Only) (Note 7)
V
OH
BATT or V
DD
≥ 4.5V, I
SOURCE
= 800µA,
deasserted
0.8 × V
SUPPLY
V
LBO Output Leakage Current
(Open-Drain Only)
I
LKG
LBO deasserted
500
nA
BATT or V
DD
≥ 1.6V, I
SINK
= 100µA,
deasserted low
0.3
BATT or V
DD
≥ 2.7V, I
SINK
= 1.2mA,
deasserted low
0.3
LBO/LBOL/LBOH Output
LOW (Open-Drain Only)
V
OL
BATT or V
DD
≥ 4.5V, I
SINK
= 3.2mA,
deasserted low
0.4
V
LBO Output Leakage Current
(Open-Drain Only)
I
LKG
LBO asserted
500
nA
0
0.6
0.3
1.2
0.9
1.5
1.8
-40 20 40-20 0 60 80
SUPPLY CURRENT
vs. TEMPERATURE
MAX6427 toc01
TEMPERATURE (
°
C)
SUPPLY CURRENT (µA)
V
BATT
= 5V
V
BATT
= 3.3V
V
BATT
= 2V
LBO NOT ASSERTED
1.010
1.005
1.000
0.995
0.990
-40 20-20 0 40 60 80
NORMALIZED LBO TIMEOUT PERIOD
vs. TEMPERATURE
MAX6427 toc02
TEMPERATURE (
°
C)
NORMALIZED LBO TIMEOUT PERIOD
80
60
40
20
0
10 100 1000
MAXIMUM TRANSIENT DURATION
vs. LBO COMPARATOR OVERDRIVE
MAX6427 toc03
LBO COMPARATOR OVERDRIVE (mV)
MAXIMUM TRANSIENT DURATION (µs)
OUTPUT DOES
NOT ASSERT
OUTPUT ASSERTS
0.950
0.975
1.025
1.000
1.050
-40 0-20 20 406080
NORMALIZED UPPER AND LOWER
TRIP VOLTAGES vs. TEMPERATURE
MAX6427 toc04
TEMPERATURE (
°
C)
NORMALIZED TRIP VOLTAGES (V)
LOWER TRIP VOLTAGE
UPPER TRIP VOLTAGE
0
100
50
200
150
250
300
010
MAX6427 toc05
I
SINK
(mA)
4268
LBO OUTPUT vs. I
SINK
LBO OUTPUT (mV)
OPEN-DRAIN LBO
ASSERTED
MAX6427–MAX6438
Low-Power, Single/Dual-Level Battery Monitors
with Hysteresis
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
MAX6427–MAX6438
Low-Power, Single/Dual-Level Battery Monitors
with Hysteresis
6 _______________________________________________________________________________________
Pin Description
PIN
M AX6427/
M AX6428/
M AX6429
M AX6430/
M AX6431/
M AX6432
M AX6433/
M AX6434/
M AX6435
M AX6436/
M AX6437/
M AX6438
NAME
FUNCTION
1—4—
LBO/
LBO
Low-Battery Output. LBO/LBO is asserted when BATT drops
below V
LTH
(MAX6427/MAX6428/MAX6429) or when LTHIN
(MAX6433/MAX6434/MAX6435) drops below V
LTHIN
, and
remains asserted for at least 140ms after BATT exceeds V
HTH
(MAX6427/MAX6428/MAX6429) or V
HTHIN
(MAX6433/
MAX6434/MAX6435).
23——
BATT
Battery-Voltage Input. Input for battery-voltage threshold
monitors and device power supply for factory-trimmed
threshold versions.
3122
GND
Ground
—2—5
LBOH/
LBOH
Low-Battery Output High. LBOH/LBOH is asserted when BATT
drops below V
HTH-
(MAX6430/MAX6431/MAX6432) or when
HTHIN drops below V
HTHIN-
(MAX6436/MAX6437/ MAX6438). It
remains asserted for at least 140ms after BATT exceeds V
HTH+
(MAX6430/MAX6431/MAX6432) or HTHIN rises above V
HTHIN+
(MAX6436/MAX6437/MAX6438).
—4—4
LBOL/
LBOL
Low-Battery Output Low. LBOL/LBOL is asserted when BATT
drops below V
LTH-
(MAX6430/MAX6431/MAX6432) or when
LTHIN drops below V
LTHIN-
(MAX6436/MAX6437/
MAX6438). It remains asserted for at least 140ms after BATT
exceeds V
LTH+
(MAX6430/MAX6431/MAX6432) or LTHIN rises
above V
LTHIN+
(MAX6436/MAX6437/MAX6438).
—— 1 1
HTHIN
HTH Threshold Monitor Input. A resistor-divider network sets
the high threshold associated with LBOH/LBOH.
—— 3 3
LTHIN
LTH Threshold Monitor Input. A resistor-divider network sets
the low threshold associated with LBOL/LBOL.
—— 5 6V
DD
V
DD
Supply Voltage Input. Device power supply for adjustable
threshold versions.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX6427ORUR+T

Mfr. #:
Buy MAX6427ORUR+T
Manufacturer:
Maxim Integrated
Description:
Battery Management Single Battery Monitor
Lifecycle:
New from this manufacturer.
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