Rainbow Electronics MAX16030 User Manual

General Description

The MAX16025–MAX16030 are dual-/triple-/quad-volt­age monitors and sequencers that are offered in a
small TQFN package. These devices offer enormous
design flexibility as they allow fixed and adjustable
thresholds to be selected through logic inputs and pro­vide sequence timing through small external capaci­tors. These versatile devices are ideal for use in a wide
variety of multivoltage applications.

As the voltage at each monitored input exceeds its
respective threshold, its corresponding output goes
high after a propagation delay or a capacitor-set time
delay. When a voltage falls below its threshold, its
respective output goes low after a propagation delay.
Each detector circuit also includes its own enable input,
allowing the power-good outputs to be shut off inde­pendently. The independent output for each detector is
available with push-pull or open-drain configuration
with the open-drain version capable of supporting volt­ages up to 28V, thereby allowing them to interface to
shutdown and enable inputs of various DC-DC regula­tors. Each detector can operate independently as four
separate supervisory circuits or can be daisy-chained
to provide controlled power-supply sequencing.

The MAX16025–MAX16030 also include a reset func­tion that deasserts only after all of the independently
monitored voltages exceed their threshold. The reset
timeout is internally fixed or can be adjusted externally.
These devices are offered in a 4mm x 4mm TQFN
package and are fully specified from -40°C to +125°C.

Applications

Multivoltage Systems

DC-DC Supplies

Servers/Workstations

Storage Systems

Networking/Telecommunication Equipment

Features

o 2.2V to 28V Operating Voltage Range
o Fixed Thresholds for 3.3V, 2.5V, 1.8V, 1.5V, and

1.2V Systems

o 1.5% Accurate Adjustable Threshold Monitors

Voltages Down to 0.5V

o 2.7% Accurate Fixed Thresholds Over

Temperature

o Fixed (140ms min)/Capacitor-Adjustable Delay

Timing

o Independent Open-Drain/Push-Pull Outputs
o Enable Inputs for Each Monitored Voltage
o 9 Logic-Selectable Threshold Options
o Manual Reset and Tolerance Select (5%/10%) Inputs
o Small, 4mm x 4mm TQFN Package
o Fully Specified from -40°C to +125°C

MAX16025–MAX16030

Dual-/Triple-/Quad-Voltage, Capacitor-

Adjustable, Sequencing/Supervisory Circuits

________________________________________________________________________________________________________________________________

Maxim Integrated Products

1

Pin Configurations

Ordering Information

19-0525; Rev 1; 6/06

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.

+

Denotes lead-free package.

*

For tape and reel, add a “T” after the “+.” All tape and reel

orders are available in 2.5k increments.

Selector Guide

Pin Configurations continued at end of data sheet.

PART

MAX16025 2 2 (Open-drain) Open-drain

MAX16026 2 2 (Push-pull) Push-pull

MAX16027 3 3 (Open-drain) Open-drain

MAX16028 3 3 (Push-pull) Push-pull

MAX16029 4 4 (Open-drain) Open-drain

MAX16030 4 4 (Push-pull) Push-pull

MONITORED

VOLTAGES

INDEPENDENT

OUTPUTS

RESET

OUTPUT

PART* TEMP RANGE

MAX16025TE+ -40°C to +125°C 16 TQFN T1644-4

MAX16026TE+ -40°C to +125°C 16 TQFN T1644-4

MAX16027TP+ -40°C to +125°C 20 TQFN T2044-3

MAX16028TP+ -40°C to +125°C 20 TQFN T2044-3

MAX16029TG+ -40°C to +125°C 24 TQFN T2444-4

MAX16030TG+ -40°C to +125°C 24 TQFN T2444-4

TOP VIEW

MR

19

CRESET

20

CDLY4

21

22

CDLY3

CDLY2

23

24

CDLY1

OUT1

+

RESET

12

CC

V

OUT2

1718 16 14 13

MAX16029
MAX16030

3

IN1

IN2

THIN QFN

(4mm x 4mm)

PIN­PACKAGE

OUT3

OUT4

TH0

15

456

IN3

IN4

TOL

12

11

10

9

8

7

PKG

CODE

TH1

EN4

EN3

EN2

EN1

GND

MAX16025–MAX16030

Dual-/Triple-/Quad-Voltage, Capacitor­Adjustable, Sequencing/Supervisory Circuits

2

______________________________________________________________________________________________________________________________________________________________________________

AABBSSOOLLUUTTEE MMAAXXIIMMUUMM RRAATTIINNGGSS

ELECTRICAL CHARACTERISTICS

(VCC= 2.2V to 28V, TA= -40°C to +125°C, unless otherwise specified. Typical values are at VCC= 3.3V and TA = +25°C.) (Note 1)

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.

(All voltages referenced to GND.)
V

CC

.........................................................................-0.3V to +30V

EN1–EN4 ....................................................-0.3V to (V

CC

+ 0.3V)

OUT1–OUT4 (push-pull).............................-0.3V to (V

CC

+ 0.3V)

OUT1–OUT4 (open-drain) ......................................-0.3V to +30V

RESET (push-pull) ......................................-0.3V to (V

CC

+ 0.3V)

RESET (open-drain) ..................................................-0.3V to 30V

IN1–IN4.......................................................-0.3V to (V

CC

+ 0.3V)

MR, TOL, TH1, TH0 ....................................-0.3V to (V

CC

+ 0.3V)

CDLY1–CDLY4 .........................................................-0.3V to +6V

CRESET......................................................-0.3V to (V

CC

+ 0.3V)

Input/Output Current (all pins)..........................................±20mA

Continuous Power Dissipation (T

A

= +70°C)

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

20-Pin TQFN (derate 25.6mW/°C above +70°C) ........2051mW

24-Pin TQFN (derate 27.8mW/°C above +70°C) ........2222mW

Operating Temperature Range .........................-40°C to +125°C

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

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

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

SUPPLY

Operating Voltage Range V

Undervoltage Lockout UVLO (Note 2) 1.8 1.9 2.0 V

Undervoltage-Lockout Hysteresis UVLO

VCC Supply Current I

INPUTS (IN_)

IN_ Thresholds (IN_ Falling) V

Adjustable Threshold (IN_
Falling)

IN_ Hysteresis (IN_ Rising) V

IN_ Input Resistance Fixed threshold 500 918 kΩ

IN_ Input Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(Note 2) 2.2 28.0 V

CC

HYSTVCC

CC

TH

V

TH

HYST

L

falling 50 mV

All OUT_ and RESET at
logic-high (IN_ current
excluded)

3.3V threshold, TOL = GND 2.970 3.052 3.135

3.3V threshold, TOL = V

2.5V threshold, TOL = GND 2.250 2.313 2.375

2.5V threshold, TOL = V

1.8V threshold, TOL = GND 1.620 1.665 1.710

1.8V threshold, TOL = V

1.5V threshold, TOL = GND 1.350 1.387 1.425

1.5V threshold, TOL = V

1.2V threshold, TOL = GND 1.080 1.110 1.140

1.2V threshold, TOL = V

TOL = GND 0.492 0.5 0.508

TOL = V

CC

Adjustable threshold only (V

VCC = 3.3V 40 75

VCC = 12V 47 75

V

= 28V 52 80

CC

CC

CC

CC

CC

CC

= 1V) -100 +100 nA

IN_

2.805 2.888 2.970

2.125 2.187 2.250

1.530 1.575 1.620

1.275 1.312 1.350

1.020 1.050 1.080

0.463 0.472 0.481

0.5 %

µA

V

V

MAX16025–MAX16030

Dual-/Triple-/Quad-Voltage, Capacitor-

Adjustable, Sequencing/Supervisory Circuits

______________________________________________________________________________________________________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 2.2V to 28V, TA= -40°C to +125°C, unless otherwise specified. Typical values are at VCC= 3.3V and TA = +25°C.) (Note 1)

Note 1: Devices are production tested at TA = +25°C. Limits over temperature are guaranteed by design.
Note 2: Operating below the UVLO causes all outputs to go low. The outputs are guaranteed to be in the correct state for V

CC

down

to 1.2V.

Note 3: In order to guarantee an assertion, the minimum input pulse width must be greater than 2µs.

CRESET AND CDLY_

CRESET Threshold V

CRESET Charge Current I

CDLY_ Threshold V

CDLY_ Charge Current I

DIGITAL LOGIC INPUTS (EN_, MR, TOL, TH1, TH0)

Input Low Voltage V

Input High Voltage V

TH1, TH0 Logic-Input Floating 0.6 V

TOL, TH1, TH0 Logic-Input
Current

EN_ Input Leakage Current V
MR Internal Pullup Current VCC = 3.3V 250 535 820 nA

OUTPUTS (OUT_, RESET)

Output Low Voltage (Open-Drain
or Push-Pull)

Output High Voltage (Push-Pull) V

Output Leakage Current (Open­Drain)

Reset Timeout Period t

TIMING

IN_ to OUT_ Propagation Delay

IN_ to RESET Propagation Delay t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

TH-RESET

CH-RESETVCC

TH-CDLY

CH-CDLYVCC

V

OH

I

LKG

RP

t

DELAY+

t

DELAY-

RST-DELAY

CRESET rising, VCC = 3.3V 0.465 0.5 0.535 V

= 3.3V 380 500 620 nA

CDLY_ rising, VCC = 3.3V 0.95 1 1.05 V

= 3.3V 200 250 300 nA

IL

IH

V

, V

, V

TOL

TH1

= VCC or GND -100 +100 nA

EN_

VCC ≥ 1.2V, I

VCC ≥ 2.25V, I

OL

VCC ≥ 4.5V, I

VCC ≥ 3V, I

VCC ≥ 4.5V, I

Output not asserted low, V

CRESET = VCC, VCC = 3.3V 140 190 260

CRESET open 0.030

IN_ rising, CDLY_ open 35

IN_ falling, CDLY_ open 20

CRESET open, IN_ falling 35 µs

= GND or V

TH0

= 90µA 0.3

SINK

= 0.5mA 0.3

SINK

= 1mA 0.35

SINK

= 500µA 0.8 x V

SOURCE

= 800µA 0.8 x V

SOURCE

CC

= 28V 1 µA

OUT

1.4 V

-1 +1 µA

CC

CC

0.4 V

V

V

ms

µs

MR Minimum Input Pulse Width (Note 3) 2 µs

EN_ or MR Glitch Rejection 280 ns

t

OFF

EN_ to OUT_ Delay

MR to RESET Delay MR falling 3 µs

t

ON

From device enabled to device disabled 3

From device disabled to device enabled
(CDLY_ open)

30

µs

MAX16025–MAX16030

Dual-/Triple-/Quad-Voltage, Capacitor­Adjustable, Sequencing/Supervisory Circuits

4

______________________________________________________________________________________________________________________________________________________________________________

Typical Operating Characteristics

(VCC= 3.3V, TA= +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX16025 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

26221814106

35

40

45

50

55

60

30

230

MAX16026

SUPPLY CURRENT
vs. TEMPERATURE

MAX16025 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

1109580655035205-10-25

35

40

45

50

55

60

30

-40 125

MAX16026

VCC = 28V

VCC = 12V

VCC = 3.3V

NORMALIZED ADJUSTABLE THRESHOLD

vs. TEMPERATURE

MAX16025 toc03

TEMPERATURE (°C)

NORMALIZED THRESHOLD

1109565 80-10 5 20 35 50-25

0.991

0.992

0.993

0.994

0.995

0.996

0.997

0.998

0.999

1.000

1.001

1.002

1.003

0.990

-40 125

TOL = VCC

TOL = GND

ADJUSTABLE THRESHOLD

NORMALIZED ADJUSTABLE THRESHOLD

vs. TEMPERATURE

MAX16025 toc04

TEMPERATURE (°C)

NORMALIZED THRESHOLD

1109565 80-10 5 20 35 50-25

0.991

0.992

0.993

0.994

0.995

0.996

0.997

0.998

0.999

1.000

1.001

1.002

1.003

0.990

-40 125

TOL = VCC

TOL = GND

3.3V THRESHOLD

OUT_ DELAY vs. C

CDLY_

MAX16025 toc05

C

CDLY_

(nF)

OUT_ DELAY (ms)

900800600 700200 300 400 500100

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

0

0 1000

RESET TIMEOUT PERIOD

vs. C

CRESET

MAX16025 toc06

C

CRESET

(nF)

RESET TIMEOUT PERIOD (ms)

900800600 700200 300 400 500100

100

200

300

400

500

600

700

800

900

1000

1100

1200

0

0 1000

FIXED RESET TIMEOUT PERIOD

vs. TEMPERATURE

MAX16025 toc07

TEMPERATURE (°C)

FIXED RESET TIMEOUT PERIOD (ms)

1109565 80-10 5 20 35 50-25

181

182

183

184

185

186

187

188

189

190

180

-40 125

CRESET = VCC

OUT_ LOW VOLTAGE

vs. SINK CURRENT

MAX16025 toc08

SINK CURRENT (mA)

V

OUT_

(V)

6

5

4321

0.2

0.4

0.6

0.8

1.0

0

07

OUT_ HIGH VOLTAGE

vs. SOURCE CURRENT

MAX16025 toc09

SOURCE CURRENT (mA)

V

OUT_

(V)

0.90.80.70.60.50.40.30.20.1

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0

0 1.0

PUSH-PULL VERSIONS

MAX16025–MAX16030

Dual-/Triple-/Quad-Voltage, Capacitor-

Adjustable, Sequencing/Supervisory Circuits

_______________________________________________________________________________________

5

Typical Operating Characteristics (continued)

(VCC= 3.3V, TA= +25°C, unless otherwise noted.)

RESET OUTPUT LOW VOLTAGE (V)

RESET OUTPUT LOW VOLTAGE

vs. SINK CURRENT

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

07

SINK CURRENT (mA)

ENABLE TURN-ON

CRESET = V
CDLY_ = OPEN

MAX16025 toc13

MAX16025 toc10

RESET OUTPUT HIGH VOLTAGE (V)

653 421

CC

EN_

OUT_

RESET

RESET OUTPUT HIGH VOLTAGE

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

0 1.0

RESET TIMEOUT DELAY

vs. SOURCE CURRENT

PUSH-PULL VERSIONS

SOURCE CURRENT (mA)

CRESET = V
CDLY_ = OPEN

0.90.80.70.60.50.40.30.20.1

MAX16025 toc14

CC

MAX16025 toc11

IN_

OUT_

RESET

ENABLE TURN-OFF

CRESET = V
CDLY_ = OPEN

4µs/div

MR FALLING vs. RESET

CRESET = V
CDLY_ = OPEN

MAX16025 toc12

CC

EN_

OUT_

RESET

MAX16025 toc15

CC

MR

RESET

40ms/div

100ms/div

4µs/div

MAXIMUM TRANSIENT DURATION

MR RISING vs. RESET

CRESET = V
CDLY_ = OPEN

40ms/div

MAX16025 toc16

CC

100

MR

RESET

MAXIMUM TRANSIENT DURATION (µs)

vs. THRESHOLD OVERDRIVE

OUTPUT ASSERTED ABOVE THIS LINE

90

80

70

60

50

40

30

20

10

0

1 1000

THRESHOLD OVERDRIVE (mV)

10010

MAX16025 toc17