MAX16025TE+ Maxim Integrated Products, MAX16025TE+ Datasheet

IC SUPERVISORY CIRC DL 16TQFN

MAX16025TE+

Manufacturer Part Number
MAX16025TE+
Description
IC SUPERVISORY CIRC DL 16TQFN
Manufacturer
Maxim Integrated Products
Type
Sequencerr
Datasheet
1.MAX16025TE.pdf (15 pages)

Specifications of MAX16025TE+

Number Of Voltages Monitored
2
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
140 ms/Adjustable Minimum
Voltage - Threshold
9 Selectable Threshold Combinations
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Undervoltage Threshold
Adjustable
Overvoltage Threshold
Adjustable
Manual Reset
Resettable
Watchdog
No Watchdog
Supply Voltage (max)
28 V
Supply Voltage (min)
2.2 V
Supply Current (typ)
52 uA
Maximum Power Dissipation
2000 mW
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16025–MAX16030 are dual-/triple-/quad-volt-
age 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 pro-
vide sequence timing through small external capaci-
tors. 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 inde-
pendently. The independent output for each detector is
available with push-pull or open-drain configuration
with the open-drain version capable of supporting volt-
ages up to 28V, thereby allowing them to interface to
shutdown and enable inputs of various DC-DC regula-
tors. 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 func-
tion 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.
19-0525; Rev 3; 1/07
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.
MAX16025
MAX16026
MAX16027
MAX16028
MAX16029
MAX16030
PART
Multivoltage Systems
DC-DC Supplies
Servers/Workstations
Storage Systems
Networking/Telecommunication Equipment
Adjustable, Sequencing/Supervisory Circuits
MONITORED
VOLTAGES
________________________________________________________________ Maxim Integrated Products
2
2
3
3
4
4
General Description
Dual-/Triple-/Quad-Voltage, Capacitor-
INDEPENDENT
2 (Open-drain)
3 (Open-drain)
4 (Open-drain)
2 (Push-pull)
3 (Push-pull)
4 (Push-pull)
OUTPUTS
Selector Guide
Applications
Open-drain
Open-drain
Open-drain
OUTPUT
Push-pull
Push-pull
Push-pull
RESET
o 2.2V to 28V Operating Voltage Range
o Fixed Thresholds for 3.3V, 2.5V, 1.8V, 1.5V, and
o 1.5% Accurate Adjustable Threshold Monitors
o 2.7% Accurate Fixed Thresholds Over
o Fixed (140ms min)/Capacitor-Adjustable Delay
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
+ Denotes lead-free package.
* For tape and reel, add a “T” after the “+.” All tape and reel
orders are available in 2.5k increments.
MAX16025TE+
MAX16026TE+
MAX16027TP+
MAX16028TP+
MAX16029TG+
MAX16030TG+
Pin Configurations continued at end of data sheet.
1.2V Systems
Voltages Down to 0.5V
Temperature
Timing
TOP VIEW
PART*
CRESET
CDLY4
CDLY3
CDLY2
CDLY1
MR
19
20
21
22
23
24
+
18
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
1
TEMP RANGE
17
Ordering Information
2
(4mm x 4mm)
THIN QFN
MAX16029
MAX16030
Pin Configurations
16
3
15
4
14
5
PIN-
PACKAGE
16 TQFN
16 TQFN
20 TQFN
20 TQFN
24 TQFN
24 TQFN
13
6
12
11
10
9
8
7
Features
TH1
EN4
EN3
EN2
EN1
GND
T1644-4
T1644-4
T2044-3
T2044-3
T2444-4
T2444-4
CODE
PKG
1

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MAX16025TE+ Summary of contents

Page 1

... 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 PART* MAX16025TE+ MAX16026TE+ MAX16027TP+ MAX16028TP+ MAX16029TG+ MAX16030TG+ + Denotes lead-free package. ...

Page 2

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) V .........................................................................-0.3V to +30V CC EN1–EN4 ....................................................-0. OUT1–OUT4 (push-pull).............................-0. OUT1–OUT4 (open-drain) ......................................-0.3V to +30V RESET (push-pull) ......................................-0. RESET (open-drain) ..................................................-0.3V to ...

Page 3

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued 2.2V to 28V -40°C to +125°C, unless otherwise specified. Typical values are PARAMETER SYMBOL CRESET AND CDLY_ CRESET Threshold V TH-RESET CRESET Charge Current ...

Page 4

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits (V = 3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 60 MAX16026 SUPPLY VOLTAGE (V) NORMALIZED ...

Page 5

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits (V = 3.3V +25°C, unless otherwise noted 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 ...

Page 6

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits PIN MAX16025/ MAX16027/ MAX16029/ MAX16026 MAX16028 MAX16030 — — — — ...

Page 7

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits PIN MAX16025/ MAX16027/ MAX16029/ MAX16026 MAX16028 MAX16030 — — 21 — — — — Table ...

Page 8

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits TH0 TH1 EN4 EN3 THRESHOLD SELECT LOGIC IN1 IN2 IN3 IN4 DELAY GND TOL REFERENCE V CDLY1 CC Figure 1. MAX16029/MAX16030 Simplified Functional Diagram 8 _______________________________________________________________________________________ EN2 EN1 DELAY 250nA LOGIC 1V DELAY DELAY CDLY2 ...

Page 9

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits UVLO IN_ EN_ OUT_ t ON RESET Figure 2. Timing Diagram (CDLY_ Open) Detailed Description The MAX16025–MAX16030 are low-voltage, accurate, dual-/triple-/quad-voltage microprocessor (µP) supervi- sors in a small TQFN package. These devices ...

Page 10

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits Applications Information The MAX16025–MAX16030 feature a pin-selectable threshold tolerance. Connect TOL to GND to select the thresholds 5% below the nominal value. Connect TOL select the threshold tolerance 10% below the CC ...

Page 11

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits Calculate the reset timeout period as follows RESET − = × CRESET I CH RESET − where V is 0.5V, I TH-RESET CH-RESET seconds, and Farads. To ...

Page 12

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits +12V BUS +3.3V IN DC-DC OUT EN EN1 IN1 CDLY1 CDLY2 Figure 4. Sequencing Multiple-Voltage System 12V BUS 1.5V 1.8V 2.5V 3.3V IN1 OUT1 V CC EN1 EN2 EN3 EN4 CDLY1 CDLY2 ...

Page 13

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits TOP VIEW CRESET 14 MAX16025 CDLY2 15 MAX16026 16 CDLY1 + THIN QFN (4mm x 4mm) ______________________________________________________________________________________ Pin Configurations (continued TH1 8 ...

Page 14

Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 14 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN ...

Page 15

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2007 Maxim Integrated Products ...

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