MAX16074RS15D2+ - Maxim Integrated Products, Inc.

_______________________________________________________________ Maxim Integrated Products 1

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.

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

General Description

The MAX16072/MAX16073/MAX16074 ultra-small, ultra-

low-power, microprocessor (µP) supervisory circuits

feature a precision band-gap reference, comparator,

and internally trimmed resistors that set the threshold

voltage. Designed to monitor the system supply voltage

and assert an output during power-up, power-down,

and brownout conditions, these devices provide excel-

lent circuit reliability and low cost by eliminating external

components and adjustments when monitoring nominal

system voltage from 1.8V to 3.6V.

The MAX16072 has a push-pull, active-low reset output,

the MAX16073 has a push-pull, active-high reset output,

and the MAX16074 has an open-drain active-low reset

output. The devices are designed to ignore fast tran-

sients on VCC. The devices also include a manual reset

input (MR).

The MAX16072/MAX16073/MAX16074 are available in a

1mm x 1mm, space-saving, 4-bump, chip-scale pack-

age (UCSPTM).

Applications

Portable/Battery-Powered Equipment

Cell Phones

PDAs

MP3 Players

Digital Cameras

Features

S Ultra-Low, 0.7µA Supply Current

S Ultra-Small (1mm x 1mm), 4-Bump UCSP

S 20µs, 8ms, 34ms, and 140ms Reset Timeout

Options Available

S Factory-Trimmed Reset Thresholds Available

from 1.58V to 3.08V in Approximately 100mV

Increments

S Q2.5% Threshold Accuracy Over Temperature

S Manual Reset Input

S Guaranteed Reset Valid to VCC = 1.0V

S Immune to Short VCC Transient

19-5112; Rev 0; 1/10

+Denotes a lead(Pb)-free/RoHS-compliant package.

Ordering Information

Typical Operating Circuit

Note: All devices are specified over the -40NC to +85NC operat-

ing temperature range.

Insert the desired suffix numbers (from Table 1) into the blanks

“RS_ _D” to indicate the reset trip threshold. Insert the desired

suffix number (from Table 2) into the blank ”D_+” to indicate the

reset timeout. Minimum order quantity may apply.

UCSP is a trademark of Maxim Integrated Products, Inc.

RESET

INPUT

( ) FOR THE MAX16073 ONLY

µP

(RESET)/

RESET

VCC

GND

MAX16072

MAX16073

MAX16074

VCC

GND

PART RESET OUTPUT TYPE PIN-

PACKAGE

MAX16072RS_ _D_+ Push-Pull, Active-Low 4 UCSP

MAX16073RS_ _D_+ Push-Pull, Active-High 4 UCSP

MAX16074RS_ _D_+ Open-Drain, Active-Low 4 UCSP

2 ______________________________________________________________________________________

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

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.

(Voltages referenced to GND.)

VCC, MR ..................................................................-0.3V to +6V

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

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

Output Current (all pins) ................................................. Q20mA

Continuous Power Dissipation (TA = +70NC)

4-Bump UCSP (derate 3mW/NC above +70NC) ..........239mW

Operating Temperature Range .......................... -40NC to +85NC

Storage Temperature Range ............................ -65NC to +150NC

Junction Temperature .....................................................+150NC

Soldering Temperature (reflow) ......................................+260NC

ELECTRICAL CHARACTERISTICS

(VCC = 1.5V to 2.75V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC and VCC = 3.6V.) (Note 1)

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Voltage Range VCC TA = 0NC to +85NC1.0 5.5 V

TA = -40NC to +85NC1.2 5.5

Supply Current ICC VCC = 1.8V for VTH P 1.66V 0.7 1.2 FA

VCC = 3.6V, no load 1.0 1.5

Detector Threshold VTH See Table 1

VCC falling, TA = +25NCVTH -

1.5% VTH VTH +

1.5% V

VCC falling, TA = -40NC to

+85NC

VTH -

2.5% VTH VTH +

2.5%

Detector Threshold Hysteresis VHYST VCC rising, VTH P 1.66V (Note 2) 6.3 mV

Detector Threshold Tempco DVTH/NC(Note 2) 40 ppm/NC

MR INPUT

MR Input High Voltage

VIH 0.7 x

VCC V

VIL 0.7 x

VCC

MR Pullup Resistance 25 50 75 kI

RESET/RESET OUTPUT (Note 3)

Output-Voltage Low VOL VCC R 1.2V, ISINK = 100FA0.4 V

VCC R 1.65V, ISINK = 1mA 0.3

Output-Voltage High VOH

VCC R 1.65V, ISOURCE = 500FA0.8 x

VCC V

VCC R 1.2V, ISOURCE = 50FA0.8 x

VCC

Open-Drain RESET Output

Leakage Current RESET not asserted (Note 2) 0.1 FA

TIMING

MR Minimum Pulse Width tMPW (Note 2) 0.8 Fs

MR Glitch Rejection tEGR (Note 2) 100 ns

MR to RESET/RESET

Propagation Delay

tOFF MR falling 1 2 Fs

tON MR rising 200 400 ns

VCC to Reset Delay tDL VCC = (VTH + 100mV) to (VTH -100mV) 20 90 Fs

_______________________________________________________________________________________ 3

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

ELECTRICAL CHARACTERISTICS (continued)

(VCC = 1.5V to 2.75V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC and VCC = 3.6V.) (Note 1)

Note 1: Production testing done at TA = +25NC only. Overtemperature limits are guaranteed by design and are not production

tested.

Note 2: Guaranteed by design.

Note 3: Reset is guaranteed down to VCC = 1.0V.

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX16072 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

5.04.54.03.53.02.52.01.5

1.0 5.5

SUPPLY CURRENT

vs. TEMPERATURE

MAX16072 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

603510-15

0.5

1.0

1.5

2.0

2.5

3.0

-40 85

VCC = 5V

VCC = 3V

VCC = 1.8V

NORMALIZED RESET THRESHOLD

vs. TEMPERATURE

MAX16072 toc03

TEMPERATURE (°C)

NORMALIZED RESET THRESHOLD (%)

603510-15

-0.2

-0.1

0.1

0.2

0.3

-0.3

-40 85

VCC FALLING

VCC RISING

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reset Active Timeout Period tRP

VCC rising, VCC

= (VTH - 100mV)

to (VTH + 100mV)

MAX1607_RSD0+ 20 80 120 Fs

MAX1607_RSD1+ 8 13 17 ms

MAX1607_RSD2+ 34 52 69 ms

MAX1607_RSD3+ 140 210 280 ms

4 ______________________________________________________________________________________

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

OUTPUT LOW VOLTAGE

vs. SINK CURRENT

MAX16072 toc04

ISINK (mA)

VOL (V)

18162 4 6 10 128 14

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

0 20

VCC = 5V

VCC = 3V

VCC = 1.8V

OUTPUT HIGH VOLTAGE

vs. SOURCE CURRENT

MAX16072 toc05

VOH (V)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

ISOURCE (mA)

18162 4 6 10 128 140 20

VCC = 1.8V

VCC = 3V

VCC = 5V

MAXIMUM TRANSIENT DURATION

vs. RESET THRESHOLD OVERDRIVE

MAX16072 toc06

RESET THRESHOLD OVERDRIVE (mV)

TRANSIENT DURATION (µs)

10010

1 1000

VRST = 1.63V

RESET OCCURS ABOVE LINES

VRST = 3.08V

VCC TO RESET PROPAGATION DELAY

vs. TEMPERATURE

MAX16072 toc07

PROPAGATION DELAY (µs)

TEMPERATURE (°C)

603510-15-40 85

VOD = OVERDRIVE VOLTAGE

VCC FALLING

VOD = 100mV

VOD = 10mV

VOD = 20mV

VOD = 200mV

MAX16072 toc08

TEMPERATURE (°C)

PROPAGATION DELAY (µS)

603510-15

100

120

-40 85

VOD = 20mV

VOD = 200mV

VOD = 100mV

VCC TO RESET PROPAGATION DELAY

vs. TEMPERATURE

VOD = OVERDRIVE VOLTAGE

VCC RISING

VOD = 10mV

MR TO RESET DELAY (tON)

vs. VCC

MAX16072 toc09

VCC (V)

RESET DELAY (ns)

2.4752.2001.925

120

150

1.650 2.750

MR RISING

MR TO RESET DELAY (tOFF)

vs. VCC

MAX16072 toc10

VCC (V)

RESET DELAY (µs)

2.4752.2001.925

0.25

0.50

0.75

1.00

1.25

1.650 2.750

MR FALLING

MR TURN-ON

MAX16072 toc11

1V/div

100ns/div

RESET

1V/div

MR TURN-OFF

MAX16072 toc12

1V/div

200ns/div

RESET

1V/div

_______________________________________________________________________________________ 5

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

Bump Description

Bump Configuration

UCSP

( ) FOR THE MAX16073 ONLY

MAX16072

MAX16073

MAX16074

TOP VIEW

(BUMP SIDE DOWN)

1 2

GND VCC

RESET/

(RESET)

BUMP NAME FUNCTION

MAX16072 MAX16073 MAX16074

A1 A1 A1 GND Ground

B1 — — RESET

Active-Low Push-Pull Reset Output. RESET changes from high to

low when VCC drops below the detector threshold (VTH) or MR is

pulled low. RESET remains low for the reset timeout period after VCC

exceeds VTH and MR is high. When MR is low, RESET is low.

— B1 — RESET

Active-High Push-Pull Reset Output. RESET changes from low to

high when VCC drops below the detector threshold (VTH) or MR is

pulled low. RESET remains high for the reset timeout period after VCC

exceeds VTH and MR is high. When MR is low, RESET is high.

— — B1 RESET

Active-Low Open-Drain Reset Output. RESET changes from high-

impedance to active-low when VCC drops below the detector thresh-

old (VTH) or MR is pulled low. RESET remains low for the reset timeout

period after VCC exceeds the reset threshold and MR is high. When

MR is low, RESET is low.

A2 A2 A2 VCC Supply Voltage and Input for the Reset Threshold Monitor

B2 B2 B2 MR

Active-Low Manual-Reset Input. Drive low to force a reset. Reset

remains active as long as MR is low and for the reset timeout period (if

applicable) after MR is driven high. MR has an internal pullup resistor

connected to VCC, and may be left unconnected if not used.

6 ______________________________________________________________________________________

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

Functional Diagrams

Detailed Description

The MAX16072/MAX16073/MAX16074 ultra-small, ultra-

low-power, µP supervisory circuits feature a precision

band-gap reference, comparator, and internally trimmed

resistors that set specified trip threshold voltages.

Designed to monitor the system supply voltage and an

output during power-up, power-down, and brownout

conditions, these devices provide excellent circuit reli-

ability and low cost by eliminating external components

and adjustments when monitoring nominal system volt-

age from 1.8V to 3.6V.

The MAX16072 has a push-pull active-low reset output,

the MAX16073 has a push-pull active-high reset output,

and the MAX16074 has an open-drain active-low reset

output. The devices are designed to ignore fast tran-

sients on VCC. The devices also include a manual reset

input (MR). When MR is low, reset is asserted. When MR

is high and VCC is above the detector threshold (VTH),

reset is not asserted.

Supply and Monitored Input (VCC)

The MAX16072/MAX16073/MAX16074 operate with a

VCC supply voltage from 1.2V to 2.75V. VCC has a rising

threshold of VTH + VHYST and a falling threshold of VTH.

When VCC rises above VTH + VHYST and MR is high,

RESET goes high (RESET goes low) after the reset time-

out period (tRP). See Figure 1.

When VCC falls below VTH, RESET goes low (RESET

goes high) after a fixed delay (tRD).

Figure 1. MAX16072/MAX16073/MAX16074 Timing Diagram

( ) MAX16073 ONLY

RESET

TIMEOUT

RESET

(RESET)

VCC

GND

MAX16074MAX16072

MAX16073

RESET

TIMEOUT

RESET

VCC

GND

tMPW

tON tDL tRP tOFF tON

t < tEGR t < tMPW

RESET

VCC

VTH VTH + VHYST

_______________________________________________________________________________________ 7

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

Manual Reset Input (MR)

Many FP-based products require manual-reset capabil-

ity, allowing the operator, a test technician, or external

logic circuit to initiate a reset. A logic-low on MR asserts

reset. Reset remains asserted while MR is low, and for

the reset active timeout period (tRP) or delay (tON) after

MR returns high. This input has an internal 50kI pullup

resistor, so it can be left unconnected if it is not used.

MR can be driven with TTL or CMOS logic levels, or

with open-drain/collector outputs. For manual operation,

connect a normally open momentary switch from MR to

GND; external debouncing circuitry is not required. If MR

is driven from long cables or if the device is used in a

noisy environment, connect a 0.1FF capacitor from MR to

ground to provide additional noise immunity.

Applications Information

Interfacing to µP with

Bidirectional Reset Pins

Since RESET on the MAX16074 is open-drain, this

device interfaces easily with FPs that have bidirectional

reset pins. Connecting the FP supervisor’s RESET output

directly to the FP’s RESET pin with a single pullup resis-

tor allows either device to assert reset (Figure 2).

Negative-Going VCC Transients

The MAX16072/MAX16073/MAX16074 family of devic-

es is relatively immune to short-duration, negative-

going VCC transients (glitches). The Typical Operating

Characteristics show the Maximum Transient Duration

vs. Reset Threshold Overdrive graph, for which reset

pulses are not generated. The graph shows the maxi-

mum pulse width that a negative-going VCC transient

may typically have when issuing a reset signal. As the

amplitude of the transient increases, the maximum allow-

able pulse width decreases.

Figure 2. Interfacing to µP with Bidirectional Reset Pins

Table 1. Factory Trimmed Reset

Thresholds

Table 2. Reset Timeout Periods

RESET

INPUT

VCC

µP

VCC

RESET

GND

VCC

MAX16074 MOTOROLA

68HCXX

THRESHOLD

SUFFIX

RESET TRIP THRESHOLD (V)

TA = +25NC TA = -40NC to +85NC

TYP MIN MAX

15 1.58 1.54 1.61

16 1.63 1.60 1.66

17 1.67 1.62 1.71

18 1.80 1.76 1.85

19 1.90 1.85 1.95

20 2.00 1.95 2.05

21 2.10 2.05 2.15

22 2.20 2.145 2.25

23 2.32 2.262 2.375

24 2.40 2.34 2.46

25 2.50 2.437 2.562

26 2.63 2.564 2.69

27 2.70 2.633 2.768

28 2.80 2.63 2.87

29 2.93 2.857 3.0

30 3.00 2.925 3.075

31 3.08 3.003 3.15

RESET TIMEOUT PERIODS

SUFFIX MIN TYP MAX UNITS

0 20 80 120 Fs

1 8 13 17 ms

2 34 52 69 ms

3 140 210 280 ms

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.

Maxim reserves the right to change the circuitry and specifications without notice at any time.

8 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

MAX16072/MAX16073/MAX16074

µP Supervisory Circuits in

4-Bump (1mm x 1mm) Chip-Scale Package

Package Information

For the latest package outline information and land patterns,

go to www.maxim-ic.com/packages. Note that a “+”, “#”, or

“-” in the package code indicates RoHS status only. Package

drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

4 UCSP R41C1-1 21-0242

Chip Information

PROCESS: BiCMOS