Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - system monitor Dual voltage detector SOIC 14

_______________General Description

The MAX8215 contains five voltage comparators; four

are for monitoring +5V, -5V, +12V, and -12V, and the

fifth monitors any desired voltage. The MAX8216 is

identical, except it monitors ±15V supplies instead of

±12V. The resistors required to monitor these voltages

and provide comparator hysteresis are included on-

chip. All comparators have open-drain outputs. These

devices consume 250µA max supply current over tem-

perature.

________________________Applications

Microprocessor Voltage Monitor

+5V, -5V, +12V, -12V Supply Monitoring (MAX8215)

+5V, -5V, +15V, -15V Supply Monitoring (MAX8216)

Overvoltage/Undervoltage Detection with

Uncommitted Comparator

Industrial Controllers

Mobile Radios

Portable Instruments

Industrial Equipment

Data-Acquisition Systems

____________________________Features

♦ 4 Dedicated Comparators plus 1 Auxiliary

Comparator

♦ 5V Dedicated Comparator Has ±1.25% Accuracy

♦ -5V, +12V, -12V, +15V, -15V Dedicated

Comparators Have ±1.5% Accuracy

♦ Overvoltage/Undervoltage Detection or

Programmable Delay Using Auxiliary Comparator

♦ Internal 1.24V Reference with ±1% Initial Accuracy

♦ Wide Supply Range: 2.7V to 11V

♦ Built-In Hysteresis

♦ 250µA Max Supply Current Over Temp.

♦ Independent Open-Drain Outputs

♦ All Precision Components Included

______________Ordering Information

*Dice are tested at T

= +25°C.

Devices in PDIP and SO packages are available in both leaded

and lead-free packaging. Specify lead free by adding the +

symbol at the end of the part number when ordering. Lead free

not available for CERDIP package.

MAX8215/MAX8216

±5V, ±12V (±15V) Dedicated

Microprocessor Voltage Monitors

________________________________________________________________ Maxim Integrated Products 1

OUT1

OUT2

OUT3

-5V

+5V

GND

VREF

DIP/SO

TOP VIEW

MAX8215

MAX8216

OUT4

DOUT

PGND

DIN

-12V (-15V)

+12V (+15V)

( ) ARE FOR MAX8216 ONLY.

__________________Pin Configuration

+5V

OUT1

+5V

PGNDGND

0.1µF

-5V

OUT2

OUT3

+12V (+15V)

OUT4

-12V (-15V)

DOUT

DIN

1.24V REFERENCE

VREF

( ) ARE FOR

MAX8216 ONLY.

MAX8215

MAX8216

__________Typical Operating Circuit

19-0169; Rev 1; 11/05

PART TEMP RANGE PIN-PACKAGE

MAX8215CPD

0°C to +70°C 14 Plastic DIP

MAX8215CSD 0°C to +70°C 14 SO

MAX8215C/D 0°C to +70°C Dice*

MAX8215EPD -40°C to +85°C 14 Plastic DIP

MAX8215ESD -40°C to +85°C 14 SO

MAX8215EJD -40°C to +85°C 14 CERDIP

MAX8215MPD -55°C to +125°C 14 Plastic DIP

14 CERDIP-55°C to +125°CMAX8215MJD

Ordering Information continued on last page.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Summary of content (12 pages)

PAGE 1
9-0169; Rev 1; 11/05 ±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors ____________________________Features The MAX8215 contains five voltage comparators; four are for monitoring +5V, -5V, +12V, and -12V, and the fifth monitors any desired voltage. The MAX8216 is identical, except it monitors ±15V supplies instead of ±12V. The resistors required to monitor these voltages and provide comparator hysteresis are included onchip. All comparators have open-drain outputs.
PAGE 2
MAX8215/MAX8216 ±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors ABSOLUTE MAXIMUM RATINGS VDD ............................................................................-0.3V, +12V VREF..............................................................-0.3V, (VDD + 0.3V) OUT_, DOUT Outputs....................................-0.3V, (VDD + 0.3V) +5V Input...................................................................+20V, -0.3V -5V, +12V, +15V, -12V, -15V Inputs.....................................
PAGE 3
±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors MAX8215/MAX8216 ELECTRICAL CHARACTERISTICS (continued) (VDD = +5V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted.) CONDITIONS PARAMETER I VIN I decreasing, TA = +25°C MAX821_C MAX821_E TA = TMIN to TMAX -12V Trip Level MAX821_M I VIN I decreasing (MAX8216 only), TA = +25°C -15V Trip Level -10.325 MAX821_E -12.970 -13.500 MAX821_M I VIN I decreasing, TA = +25°C MAX821_C -12.904 -4.348 -4.337 MAX821_E -4.326 -4.500 MAX821_M -4.
PAGE 4
__________________________________________Typical Operating Characteristics (TA=+25°C, unless otherwise noted.) COMPARATOR INPUT BIAS CURRENT vs. SUPPLY VOLTAGE 2 1.5 1 1.2 1 0.8 0.6 0.4 0.5 0.2 0 0 -60 -40 -20 0 TA = +125°C 1.5 5 0.5 2.5 3 3.5 4 4.5 5 0 2.0 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 SUPPLY CURRENT vs. SUPPLY VOLTAGE REFERENCE VOLTAGE vs. REFERENCE SOURCE CURRENT REFERENCE VOLTAGE vs.
PAGE 5
±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors (TA = +25°C, unless otherwise noted.) +5V PIN 8215/16 SCOPE2 -5V RESPONSE WITH ±100mV INPUT EXCURSION AROUND TRIP LEVEL 8215/16 SCOPE1 +5V RESPONSE WITH ±100mV INPUT EXCURSION AROUND TRIP LEVEL +5V PIN OUT1 OUT1 +5V COMP -5V COMP SUPPLY VOLTAGE 8215/16 SCOPE4 DIN COMPARATOR RESPONSE WITH 30mV OVERDRIVE 8215/16 SCOPE3 DOUT OUTPUT VOLTAGE vs.
PAGE 6
MAX8215/MAX8216 ±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors _____________________Pin Description +5V PIN NAME FUNCTION 1 VREF Output of the internal 1.24V reference 2 GND Ground. Connect to PGND.
PAGE 7
±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors MAX8215/MAX8216 VTRIP2 VDD MAX8215 MAX8216 RA 7 DIN ( INPUT VOLTAGE (VS) VTRIP1 180k DOUT 9 +VS VHYST 1 + RA RB ) GND OUTPUT VOLTAGE VDD RB GND 1.24V REFERENCE ( VTRIP = RA + RB RB ) TO DETERMINE THE TRIP VOLTAGES FROM PARTICULAR RESISTOR VALUES: RA VTRIP1 = VREF 1 + RB RA VTRIP2 = (VREF + VHYST) 1 + RB VHYST = 16mV TYP ) ( (VREF) Figure 2.
PAGE 8
MAX8215/MAX8216 ±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors +5V VTRIP2 INPUT VOLTAGE (VS) VTRIP1 0.1µF 8 2 GND +VS 3 7 +5V DIN PGND MAX8215 MAX8216 VDD OUT1 DOUT 14 680k 680k GND OUTPUT VOLTAGE (OUT1) 13 9 RESET OUTPUT VOLTAGE (DOUT) VDD tDLY GND VDD GND VTRIP1 IS FOR VS DECREASING; VTRIP2 IS FOR VS INCREASING. VREF tDLY = -RC In 1 - V CC ( ) 1µF NOTE: VTH IS THE VOLTAGE AT THE INVERTING PIN OF THE TWO COMPARATORS.
PAGE 9
±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors MAX8215/MAX8216 V+ +5V 1k 1k 0.1µF 14 0.1µF VDD OUT1 8 2 GND PGND VDD 14 680k 13 680k MAX8215 MAX8216 +VS 3 7 +5V DIN MAX8215 MAX8216 OUT1 DOUT 13 9 RESET Figure 8. Alternate Bypass Scheme 1µF Figure 7. Microprocessor Reset Circuit Monitoring Its Own Supply Voltage VIN 7 DIN MAX8215 MAX8216 DOUT 9 absolute maximum ratings have no effect on the reference.
PAGE 10
MAX8215/MAX8216 ±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors _Ordering Information (continued) PART TEMP. RANGE MAX8216CPD 0°C to +70°C 14 Plastic DIP MAX8216CSD MAX8216C/D MAX8216EPD MAX8216ESD MAX8216EJD MAX8216MPD MAX8216MJD 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C -55°C to +125°C 14 SO Dice* 14 Plastic DIP 14 SO 14 CERDIP 14 Plastic DIP 14 CERDIP * Dice are tested at TA = +25°C.
PAGE 11
±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors DIM D1 A A1 A2 A3 B B1 C D D1 E E1 e eA eB L α E E1 D A3 A A2 INCHES MIN MAX – 0.200 0.015 – 0.125 0.150 0.055 0.080 0.016 0.022 0.050 0.065 0.008 0.012 0.735 0.765 0.050 0.080 0.300 0.325 0.240 0.280 0.100 BSC 0.300 BSC – 0.400 0.115 0.150 0˚ 15˚ MILLIMETERS MIN MAX – 5.08 0.38 – 3.18 3.81 1.40 2.03 0.41 0.56 1.27 1.65 0.20 0.30 18.67 19.43 1.27 2.03 7.62 8.26 6.10 7.11 2.54 BSC 7.62 BSC – 10.16 2.92 3.
PAGE 12
MAX8215/MAX8216 ±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors ___________________________________________Package Information (continued) DIM E A A1 B C D E e H h L α H INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.344 0.337 0.157 0.150 0.050 BSC 0.244 0.228 0.020 0.010 0.050 0.016 8˚ 0˚ MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 8.55 8.75 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.27 0˚ 8˚ 21-331A h x 45˚ D α A 0.127mm 0.004in.