MAX6846KA datasheet(2/12 Pages) MAXIM

2 / 12 page

Low-Power, Adjustable Battery Monitors with

Hysteresis and Integrated µP Reset

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

*Applying 7V for a duration of 1ms does not damage the device.

VDD, VCC to GND....................................................-0.3V to +6V*

Open-Drain LBO, LBOH, LBOL to GND .................-0.3V to +6V*

Open-Drain RESET to GND ....................................-0.3V to +6V*

Push-Pull RESET to GND............................-0.3V to (VCC + 0.3V)

HTHIN, LTHIN to GND................................-0.3V to (VDD + 0.3V)

MR to GND .................................................-0.3V to (VCC + 0.3V)

Input/Output Current, All Pins .............................................20mA

Continuous Power Dissipation (TA = +70°C)

8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW

Operating Temperature Range .......................... -40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VDD = 1.6V to 5.5V, VCC = 1.2V to 5.5V, TA = -40°C to +85°C, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VDD Operating Voltage Range

VDD

1.6

5.5

TA = 0°C to +85°C

1.0

5.5

VCC Operating Voltage Range

VCC

TA = -40°C to +85°C

1.2

5.5

VCC + VDD Supply Current

ICC + IDD

VDD = 3.6V, VCC = 3.3V, no load (Note 2)

2.5

µA

MAX6846/MAX6847 VDD THRESHOLDS

HTHIN Threshold

VHTH

HTHIN rising, LBO is deasserted when

HTHIN rises above VHTH

600

615

630

LTHIN Threshold

VLTH

LTHIN falling, LBO is asserted when LTHIN

falls below VLTH

600

615

630

MAX6848/MAX6849 VDD THRESHOLDS

HTHIN+ Threshold

VHTH+

HTHIN rising, LBOH is deasserted when

HTHIN rises above VHTH+

600

615

630

HTHIN- Threshold

VHTH-

HTHIN falling, LBOH is asserted when

HTHIN falls below VHTH-

567

582

597

LTHIN+ Threshold

VLTH+

LTHIN rising, LBOL is deasserted when

LTHIN rises above VLTH+

600

615

630

LTHIN- Threshold

VLTH-

LTHIN falling, LBOL is asserted when

LTHIN falls below VLTH-

567

582

597

MAX6846–MAX6849

HTHIN/LTHIN Leakage Current

ILKG

VHTHIN or VLTHIN

≥ 400mV

LBO, LBOL, LBOH Timeout Period

tLBOP

HTHIN/LTHIN rising above threshold

150

225

300

LBO, LBOL, LBOH Delay Time

tLBOD

HTHIN/LTHIN falling below threshold

100

µs

(VDD or VCC)

≥ 1.2V, ISINK = 50µA, asserted

low

0.3

(VDD or VCC)

≥ 1.6V, ISINK = 100µA,

asserted low

0.3

(VDD or VCC)

≥ 2.7V, ISINK = 1.2mA,

asserted low

0.3

LBO, LBOL, LBOH Output Low

VOL

(VDD or VCC)

≥ 4.5V, ISINK = 3.2mA,

asserted low

0.3

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