Rainbow Electronics MAX16030 - Manual

General Description
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.
Applications
Multivoltage Systems
DC-DC Supplies
Servers/Workstations
Storage Systems
Networking/Telecommunication Equipment
Features
♦ 2.2V to 28V Operating Voltage Range
♦ Fixed Thresholds for 3.3V, 2.5V, 1.8V, 1.5V, and
1.2V Systems
♦ 1.5% Accurate Adjustable Threshold Monitors
Voltages Down to 0.5V
♦ 2.7% Accurate Fixed Thresholds Over
Temperature
♦ Fixed (140ms min)/Capacitor-Adjustable Delay
Timing
♦ Independent Open-Drain/Push-Pull Outputs
♦ Enable Inputs for Each Monitored Voltage
♦ 9 Logic-Selectable Threshold Options
♦ Manual Reset and Tolerance Select (5%/10%) Inputs
♦ Small, 4mm x 4mm TQFN Package
♦ Fully Specified from -40°C to +125°C
MAX16025–MAX16030
Dual-/Triple-/Quad-Voltage, Capacitor-
Adjustable, Sequencing/Supervisory Circuits
_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _ Maxim Integrated Products 1
TOP VIEW
+
23
24
22
21
8
7
9
IN1 IN3 IN4 TOL
10
V
CC
OUT1 OUT3 OUT4 RESET TH0
1 2
CDLY3
4 5 6
17 18 16 14 13
CDLY2
CDLY1
EN3
EN2
EN1
GND
MAX16029
MAX16030
IN2
OUT2
3
15
CDLY4
20 11 EN4 CRESET
19 12 TH1 MR
THIN QFN
(4mm x 4mm)
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.
PART* TEMP RANGE
PIN-
PACKAGE PKG
CODE
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
Selector Guide
PART
MONITORED
VOLTAGES
INDEPENDENT
OUTPUTS
RESET
OUTPUT
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 Pin Configurations continued at end of data sheet.