MAX16025MAX16030
19-0525; Rev 3; 1/07
Dual-/Triple-/Quad-Voltage, Capacitor-
Adjustable, Sequencing/Supervisory Circuits
General Description Features
2.2V to 28V Operating Voltage Range
The MAX16025MAX16030 are dual-/triple-/quad-volt-
age monitors and sequencers that are offered in a
Fixed Thresholds for 3.3V, 2.5V, 1.8V, 1.5V, and
small TQFN package. These devices offer enormous
1.2V Systems
design flexibility as they allow fixed and adjustable
1.5% Accurate Adjustable Threshold Monitors
thresholds to be selected through logic inputs and pro-
Voltages Down to 0.5V
vide sequence timing through small external capaci-
2.7% Accurate Fixed Thresholds Over
tors. These versatile devices are ideal for use in a wide
Temperature
variety of multivoltage applications.
Fixed (140ms min)/Capacitor-Adjustable Delay
As the voltage at each monitored input exceeds its
Timing
respective threshold, its corresponding output goes
Independent Open-Drain/Push-Pull Outputs
high after a propagation delay or a capacitor-set time
delay. When a voltage falls below its threshold, its
Enable Inputs for Each Monitored Voltage
respective output goes low after a propagation delay.
9 Logic-Selectable Threshold Options
Each detector circuit also includes its own enable input,
Manual Reset and Tolerance Select (5%/10%) Inputs
allowing the power-good outputs to be shut off inde-
Small, 4mm x 4mm TQFN Package
pendently. The independent output for each detector is
available with push-pull or open-drain configuration
Fully Specified from -40C to +125C
with the open-drain version capable of supporting volt-
Ordering Information
ages up to 28V, thereby allowing them to interface to
shutdown and enable inputs of various DC-DC regula-
PIN- PKG
PART* TEMP RANGE
tors. Each detector can operate independently as four
PACKAGE CODE
separate supervisory circuits or can be daisy-chained
MAX16025TE+ -40C to +125C 16 TQFN T1644-4
to provide controlled power-supply sequencing.
MAX16026TE+ -40C to +125C 16 TQFN T1644-4
The MAX16025MAX16030 also include a reset func-
MAX16027TP+ -40C to +125C 20 TQFN T2044-3
tion that deasserts only after all of the independently
monitored voltages exceed their threshold. The reset
MAX16028TP+ -40C to +125C 20 TQFN T2044-3
timeout is internally fixed or can be adjusted externally.
MAX16029TG+ -40C to +125C 24 TQFN T2444-4
These devices are offered in a 4mm x 4mm TQFN
MAX16030TG+ -40C to +125C 24 TQFN T2444-4
package and are fully specified from -40C to +125C.
+Denotes lead-free package.
*For tape and reel, add a T after the +. All tape and reel
Applications
orders are available in 2.5k increments.
Multivoltage Systems
Pin Configurations
DC-DC Supplies
Servers/Workstations TOP VIEW
Storage Systems 18 17 16 15 14 13
MR 12
19 TH1
Networking/Telecommunication Equipment
EN4
CRESET 20 11
Selector Guide
CDLY4 21 10 EN3
MAX16029
CDLY3 22 9 EN2
MONITORED INDEPENDENT RESET
MAX16030
PART
VOLTAGES OUTPUTS OUTPUT
CDLY2 23 8 EN1
MAX16025 2 2 (Open-drain) Open-drain
24 7 GND
CDLY1
MAX16026 2 2 (Push-pull) Push-pull
+
12 3 45 6
MAX16027 3 3 (Open-drain) Open-drain
MAX16028 3 3 (Push-pull) Push-pull
THIN QFN
MAX16029 4 4 (Open-drain) Open-drain
(4mm x 4mm)
MAX16030 4 4 (Push-pull) Push-pull
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxims website at www.maxim-ic.com.
V RESET
CC
IN1 OUT1
IN2 OUT2
IN3 OUT3
IN4 OUT4
TOL TH0Dual-/Triple-/Quad-Voltage, Capacitor-
Adjustable, Sequencing/Supervisory Circuits
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.) CRESET......................................................-0.3V to (V + 0.3V)
CC
V .........................................................................-0.3V to +30V Input/Output Current (all pins)..........................................20mA
CC
EN1EN4 ....................................................-0.3V to (V + 0.3V) Continuous Power Dissipation (T = +70C)
CC A
OUT1OUT4 (push-pull).............................-0.3V to (V + 0.3V) 16-Pin TQFN (derate 25mW/C above +70C) ...........2000mW
CC
OUT1OUT4 (open-drain)......................................-0.3V to +30V 20-Pin TQFN (derate 25.6mW/C above +70C) ........2051mW
RESET (push-pull) ......................................-0.3V to (V + 0.3V) 24-Pin TQFN (derate 27.8mW/C above +70C) ........2222mW
CC
RESET (open-drain)..................................................-0.3V to 30V Operating Temperature Range .........................-40C to +125C
IN1IN4.......................................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C
CC
MR, TOL, TH1, TH0 ....................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C
CC
CDLY1CDLY4.........................................................-0.3V to +6V Lead Temperature (soldering, 10s) .................................+300C
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.
ELECTRICAL CHARACTERISTICS
(V = 2.2V to 28V, T = -40C to +125C, unless otherwise specified. Typical values are at V = 3.3V and T = +25C.) (Note 1)
CC A CC A
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SUPPLY
Operating Voltage Range V (Note 2) 2.2 28.0 V
CC
Undervoltage Lockout UVLO (Note 2) 1.8 1.9 2.0 V
Undervoltage-Lockout Hysteresis UVLO V falling 50 mV
HYST CC
V = 3.3V 40 75
CC
All OUT_ and RESET at
V Supply Current I A
CC CC logic-high (IN_ current V = 12V 47 75
CC
excluded)
V = 28V 52 80
CC
INPUTS (IN_)
3.3V threshold, TOL = GND 2.970 3.052 3.135
3.3V threshold, TOL = V 2.805 2.888 2.970
CC
2.5V threshold, TOL = GND 2.250 2.313 2.375
2.5V threshold, TOL = V 2.125 2.187 2.250
CC
1.8V threshold, TOL = GND 1.620 1.665 1.710
IN_ Thresholds (IN_ Falling) V V
TH
1.8V threshold, TOL = V 1.530 1.575 1.620
CC
1.5V threshold, TOL = GND 1.350 1.387 1.425
1.5V threshold, TOL = V 1.275 1.312 1.350
CC
1.2V threshold, TOL = GND 1.080 1.110 1.140
1.2V threshold, TOL = V 1.020 1.050 1.080
CC
TOL = GND 0.492 0.5 0.508
Adjustable Threshold (IN_
V V
TH
Falling)
TOL = V 0.463 0.472 0.481
CC
IN_ Hysteresis (IN_ Rising) V 0.5 %
HYST
IN_ Input Resistance Fixed threshold 500 918 k
IN_ Input Current I Adjustable threshold only (V = 1V) -100 +100 nA
L IN_
2 _______________________________________________________________________________________
MAX16025MAX16030