MAX16021 datasheet(2/21 Pages) MAXIM

Part #	MAX16021

Description	Low-Power uP Supervisory Circuits with Battery-Backup Circuit and Chip-Enable Gating

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Manufacturer	MAXIM [Maxim Integrated Products]

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Low-Power µP Supervisory Circuits with

Battery-Backup Circuit and Chip-Enable Gating

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = 1.53V to 5.5V, VBATT = 3V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (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.

VCC, BATT, OUT, BATT_TEST to GND.....................-0.3V to +6V

RESET, RESET, PFO, BATTOK, WDO, BATTON,

BATT_TEST, LL, (all open-drain) to GND .................-0.3V to +6V

RESET, RESET, BATTOK, WDO, BATTON,

LL (all push-pull) to GND......................-0.3V to (VOUT + 0.3V)

WDI, PFI to GND.......................................-0.3V to (VOUT + 0.3V)

CEIN, CEOUT to GND ..............................-0.3V to (VOUT + 0.3V)

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

Input Current

VCC Peak Current.................................................................1A

VCC Continuous Current ...............................................250mA

BATT Peak Current .......................................................500mA

BATT Continuous Current ...............................................70mA

Output Current

OUT Short Circuit to GND Duration ....................................10s

RESET, RESET, BATTON ....................................................20mA

Continuous Power Dissipation (TA = +70°C)

10-Pin TDFN (derate 24.4mW/°C above +70°C) .......1951mW

16-Pin TQFN (derate 25mW/°C above +70°C) ..........2000mW

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

Soldering Temperature (reflow)

TDFN ............................................................................+260°C

TQFN............................................................................+240°C

PACKAGE THERMAL CHARACTERISTICS (Note 1)

TDFN

Junction-to Ambient Thermal Resistance (

θJA) ...........41°C/W

Junction-to Case Thermal Resistance (

θJC) ..................9°C/W

TQFN

Junction-to Ambient Thermal Resistance (

θJA) ...........40°C/W

Junction-to Case Thermal Resistance (

θJC) ..................6°C/W

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range (Note 3)

VCC, VBATT VCC or VBATT > VTH

0

5.5

V

VCC = 1.62V

1.2

2

VCC = 2.8V

1.9

3

VCC = 3.6V

2.3

3.5

Supply Current

ICC

VCC > VTH

VCC = 5.5V

3.4

5

µA

Supply Current in

Battery-Backup Mode

IBATT

VCC = 0V

0.25

0.5

µA

VCC Switchover Threshold Voltage

VCC rising, VCC - VBATT

0.1

x VCC

V

BATT Switchover Threshold

Voltage

VCC falling, VCC < VTH, VCC - VBATT

0mV

BATT Standby Current

VCC > VBATT + 0.2V

-10

+10

nA

BATT Freshness Leakage Current

VBATT = 5.5V

20

nA

VCC = 4.75V, IOUT = 150mA

1.4

4.5

VCC = 3.15V, IOUT = 65mA

1.7

4.5

VCC = 2.35V, IOUT = 25mA

2.1

5.0

VCC to OUT On-Resistance

RON

VCC = 1.91V, IOUT = 10mA

2.6

5.5

Ω

VBATT = 4.5V, IOUT = 20mA

VBATT - 0.1

Output Voltage in

Battery-Backup Mode

VOUT

VBATT = 2.5V, IOUT = 20mA

VBATT - 0.15

V

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.

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