Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - system monitor Dual voltage detector TQFN 24

General Description

The MAX16060/MAX16061/MAX16062 are 1% accurate,

quad-/hex-/octal-voltage µP supervisors in a small thin

QFN package. These devices provide supervisory func-

tions for complex multivoltage systems. The MAX16060

monitors four voltages, the MAX16061 monitors six volt-

ages, and the MAX16062 monitors eight voltages.

These devices offer independent outputs for each mon-

itored voltage along with a reset output that asserts

whenever any of the monitored voltages fall below their

respective thresholds (down to 0.4V) or the manual

reset input is asserted. The reset output remains assert-

ed for the reset timeout after all voltages are above their

respective thresholds and the manual reset input is

deasserted. The minimum reset timeout is internally set

to 140ms or can be adjusted with an external capacitor.

All open-drain outputs have internal 30µA pullups that

eliminate the need for external pullup resistors.

However, each output can be driven with an external

voltage up to 5.5V. Other features offered include a

manual reset input, a tolerance pin for selecting 5% or

10% input thresholds, and a margin enable function for

deasserting the outputs during margin testing.

An additional feature is a watchdog timer that asserts

RESET when the watchdog timeout period (1.6s typ) is

exceeded. The watchdog timer can be disabled by

leaving WDI unconnected.

These devices are offered in 16-, 20-, and 24-pin thin

QFN packages (4mm x 4mm) and are fully specified

from -40°C to +125°C.

Features

o Fixed Thresholds for 3.3V, 2.5V, and 1.8V Systems

o Adjustable Thresholds Monitor Low Voltages

(Down to 0.4V)

o 1% Accurate over Temperature

o Open-Drain Outputs with Internal Pullups Reduce

the Number of External Components

o Fixed 140ms (min) or Capacitor-Adjustable Reset

Timeout

o Manual Reset, Margin Enable, and Tolerance

Select Inputs

o Watchdog Timer

1.6s (typ) Timeout Period

54s Startup Delay After Reset

o Monitors Four (MAX16060), Six (MAX16061), or

Eight (MAX16062) Voltages

o RESET Output Indicates All Voltages Present

o Independent Voltage Monitors

o Guaranteed to Remain Asserted Down to V

= 1V

o Small (4mm x 4mm) Thin QFN Package

MAX16060/MAX16061/MAX16062

1% Accurate, Quad-/Hex-/Octal-Voltage

µP Supervisors

________________________________________________________________________________________________________________________________

Maxim Integrated Products

MAX16061A

GND

μP

TOL

SRT

IN1

MARGIN

IN1

IN2

IN3

IN4

IN5

IN6

RESET

WDI

OUT1

RST

I/O

IN2

IN3

IN4

IN5

IN6

OUT2

OUT3

OUT4

OUT5

OUT6

Ordering Information

Typical Operating Circuit

19-4099; Rev 0; 4/08

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.

Note: The “_” is a placeholder for the input voltage threshold.

See Table 1. The MAX16060/MAX16061/MAX16062 are avail-

able in factory-preset thresholds/configuration combinations.

Choose the desired combination and complete part number

from Table 1.

Denotes a lead-free package.

For tape-and-reel, add a “T” after the “+.” Tape-and-reel are

offered in 2.5k increments.

EP = Exposed pad.

PART TEMP RANGE PIN-PACKAGE

MAX16060_TE+ -40°C to +125°C 16 TQFN-EP*

MAX16061_TP+ -40°C to +125°C 20 TQFN-EP*

MAX16062_TG+ -40°C to +125°C 24 TQFN-EP*

Storage Equipment

Servers

Networking/Telecommun-

ication Equipment

Multivoltage ASICs

Automotive

Applications

Summary of content (18 pages)

PAGE 1
9-4099; Rev 0; 4/08 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors Features The MAX16060/MAX16061/MAX16062 are 1% accurate, quad-/hex-/octal-voltage µP supervisors in a small thin QFN package. These devices provide supervisory functions for complex multivoltage systems. The MAX16060 monitors four voltages, the MAX16061 monitors six voltages, and the MAX16062 monitors eight voltages.
PAGE 2
MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors ABSOLUTE MAXIMUM RATINGS VCC, OUT_, IN_, RESET to GND ..............................-0.3V to +6V TOL, MARGIN, MR, SRT, WDI to GND ...........-0.3V to VCC + 0.3 Input/Output Current (RESET, MARGIN, SRT, MR, TOL, OUT_, WDI).........................................±20mA Continuous Power Dissipation (TA = +70°C) 16-Pin TQFN (derate 16.9mW/°C above +70°C) ......1349mW 20-Pin TQFN (derate 16.9mW/°C above +70°C) ......
PAGE 3
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors (VCC = 2.0V to 5.5V, TA = -40°C to +125°C, unless otherwise specified. Typical values are at VCC = 3.3V, TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS RESET Reset Timeout tRP SRT = VCC 140 200 280 CSRT = 1500pF (Note 4) 2.43 3.09 3.92 ms nA CSRT = 100pF 0.206 CSRT = open SRT Ramp Current ISRT VSRT = 0V SRT Threshold 50 600 740 1.173 1.235 1.
PAGE 4
MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors ELECTRICAL CHARACTERISTICS (continued) (VCC = 2.0V to 5.5V, TA = -40°C to +125°C, unless otherwise specified. Typical values are at VCC = 3.3V, TA = +25°C). (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.3 x VCC V WATCHDOG TIMER WDI Input-Voltage Low VIL WDI Input-Voltage High VIH WDI Pulse Width Watchdog Timeout Period 0.
PAGE 5
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors 45 40 VCC = 5V 50 45 VCC = 3.3V 40 VCC = 2.5V 35 35 1.5 2.0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 1.0025 1.0000 0.9975 0.9950 0.9900 1.5 VOUT_ (mV) 50 0.
PAGE 6
Typical Operating Characteristics (continued) (VCC = 3.3V, TA = +25°C, unless otherwise noted.) WATCHDOG TIMEOUT PERIOD vs. TEMPERATURE RESET TIMEOUT PERIOD vs. CSRT 10 1 0.1 MAX16060/1/2 toc11 100 1.60 1.59 WATCHDOG TIMEOUT PERIOD (s) MAX16060/1/2 toc10 1000 tRP (ms) MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors 1.58 1.57 1.56 1.55 1.54 1.53 1.52 1.51 1.50 0.01 0.01 0.
PAGE 7
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors PIN NAME 1 IN3 Monitored Input Voltage 3. See Table 1 for the input voltage threshold. FUNCTION 2 IN4 Monitored Input Voltage 4. See Table 1 for the input voltage threshold. 3 WDI Watchdog Timer Input. If WDI remains low or high for longer than the watchdog timeout period, RESET is asserted. The timer clears whenever a reset is asserted or a rising or falling edge on WDI is detected.
PAGE 8
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors MAX16060/MAX16061/MAX16062 Pin Description (MAX16061) 8 PIN NAME 1 IN4 Monitored Input Voltage 4. See Table 1 for the input voltage threshold. FUNCTION 2 IN5 Monitored Input Voltage 5. See Table 1 for the input voltage threshold. 3 IN6 Monitored Input Voltage 6. See Table 1 for the input voltage threshold. 4 WDI Watchdog Timer Input.
PAGE 9
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors PIN NAME 1 IN5 Monitored Input Voltage 5. See Table 1 for the input voltage threshold. FUNCTION 2 IN6 Monitored Input Voltage 6. See Table 1 for the input voltage threshold. 3 IN7 Monitored Input Voltage 7. See Table 1 for the input voltage threshold. 4 IN8 Monitored Input Voltage 8. See Table 1 for the input voltage threshold. 5 WDI Watchdog Timer Input.
PAGE 10
MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors Table 1. Input-Voltage-Threshold Selector PART IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 MAX16060A 3.3 2.5 ADJ 1.8 — — — — MAX16060B 3.3 ADJ ADJ 1.8 — — — — MAX16060C ADJ 2.5 ADJ 1.8 — — — — MAX16060D 3.3 2.5 ADJ ADJ — — — — MAX16060E ADJ ADJ ADJ ADJ — — — — MAX16061A 3.3 2.5 ADJ 1.8 ADJ ADJ — — MAX16061B 3.3 ADJ ADJ 1.8 ADJ ADJ — — MAX16061C 3.3 2.
PAGE 11
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors WDI MR SRT VCC VCC WATCHDOG TIMER CIRCUIT TIMING RESET CIRCUIT RESET IN1 OUT1 IN2 OUT2 OUTPUT DRIVER IN3 OUT3 EN OUT4 IN4 VCC TOL VCC REFERENCE UNDERVOLTAGE LOCKOUT MAX16060D VCC MARGIN Figure 1.
PAGE 12
MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors Functional Diagrams (continued) WDI MR SRT VCC VCC WATCHDOG TIMER CIRCUIT TIMING RESET CIRCUIT RESET IN1 OUT1 IN2 OUT2 IN3 OUT3 OUTPUT DRIVER IN4 OUT4 IN5 OUT5 IN6 EN VCC TOL REFERENCE OUT6 VCC UNDERVOLTAGE LOCKOUT MAX16061C VCC MARGIN Figure 2.
PAGE 13
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors WDI MR SRT VCC VCC WATCHDOG TIMER CIRCUIT TIMING RESET CIRCUIT RESET IN1 OUT1 IN2 OUT2 IN3 OUT3 OUTPUT DRIVER IN4 OUT4 IN5 OUT5 IN6 OUT6 IN7 OUT7 IN8 EN VCC TOL REFERENCE OUT8 VCC UNDERVOLTAGE LOCKOUT MAX16062C VCC MARGIN Figure 3.
PAGE 14
MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors Detailed Description The MAX16060/MAX16061/MAX16062 are 1% accurate low-voltage, quad-/hex-/octal-voltage µP supervisors in a small thin QFN package. These devices provide supervisory functions for complex multivoltage systems. The MAX16060 monitors four voltages; the MAX16061 monitors six voltages; and the MAX16062 monitors eight voltages.
PAGE 15
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors ) (VTH + VTH_HYS) R1 R2 VINTH 5V R1 VCC R1 R2 INPUT IN1 OUT1 IN2 MAX16060E OUT2 IN3 R2 OUT OUT3 VTH R3 IN4 OUT4 R4 (VV R1 = R2 INTH TH ) -1 GND Figure 8. Setting the Adjustable Input ( ) Adjustable Input R3 VTH4 = 1 + R4 VTH These devices offer several monitor options with adjustable input thresholds (see Table 1). The threshold voltage at each adjustable IN_ input is typically 0.394V (TOL = GND) or 0.373V (TOL = VCC).
PAGE 16
MAX16060/MAX16061/MAX16062 1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors VCC = 3.3V 5V IN_ VTH_ VTH_ 100kΩ VCC VCC RESET OUT_ 90% RESET 10% tRD tRP OUT_ MAX16060 MAX16061 MAX16062 90% 10% GND GND tD Figure 9. Interfacing to a Different Logic Supply Voltage tD Figure 10. Output Timing Diagram RESET Output Manual Reset Input (MR) RESET asserts low when any of the monitored voltages fall below their respective thresholds or MR is asserted.
PAGE 17
1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors Undervoltage Lockout (UVLO) The MAX16060/MAX16061/MAX16062 feature a VCC undervoltage lockout (UVLO) that preserves a reset status even if VCC falls as low as 1V. The undervoltage lockout circuitry monitors the voltage at VCC. If VCC falls below the UVLO falling threshold (typically 1.735V), RESET is asserted and all OUT_ are asserted low.
PAGE 18
RESET 13 8 MR IN1 14 7 OUT4 6 OUT3 15 14 13 12 11 RESET 16 10 MR IN1 17 9 OUT6 8 OUT5 7 OUT4 6 VCC IN2 18 MAX16060 IN2 15 SRT 9 MARGIN 10 OUT3 SRT 11 OUT2 MARGIN 12 TOP VIEW OUT1 OUT2 TOP VIEW OUT1 Pin Configurations MAX16061 IN3 19 1 THIN QFN (4mm x 4mm) 2 3 4 5 GND 4 WDI 3 IN6 2 IN4 + GND TOL 20 WDI 1 VCC IN5 5 + IN4 TOL 16 IN3 OUT4 MARGIN SRT 18 OUT3 TOP VIEW OUT2 OUT1 THIN QFN (4mm x 4mm) 17 16 15 14 13 RESET 19 12 MR