Rainbow Electronics MAX16999 - Manual

General Description
The MAX16999 linear regulator operates from a 2.5V to
5.5V input voltage and delivers 100mA continuous load
current with a low quiescent current typically around
13µA. The output voltage is preset to internally trimmed
voltages in the 0.5V to 3.3V range (see the
Selector
Guide ). An active-low, open-drain reset output remains
low for a programmable timeout delay after the output
voltage reaches regulation. The reset timeout is pro-
grammed by an external capacitor connected to CRES.
This device also features logic-controlled shutdown,
and short-circuit and thermal-overload protection. The
typical applications are multimedia, telematics, and
motor control microcontrollers (µCs) with always-on
requirements. The MAX16999 is used as a parallel, low-
quiescent supply to power the core or interrupt section
of µCs during sleep mode. It can also be used to sup-
ply a timer or memory during µC shutoff. The adjustable
POR delay assists with power-supply sequencing.
Applications
Industrial
SDRAM Power Supplies
Keep-Alive Timers
Handheld/Portable Devices
Features
♦ Preset 0.5V to 3.3V Output Voltage Range
♦ Up to 100mA Output Current at T
A = +125°C
♦ 13µA Quiescent Current
♦ Logic-Controlled Enable
♦ Adjustable POR Delay Flag
♦ Short to GND Protection on Reset Timer
♦ Used in Parallel with High-Current Supply of
Equal Voltages
♦ AEC-100 Qualification Request
♦ Thermal-Overload and Short-Circuit Protection
♦ Tiny 8-Pin µMAX
® Package with Exposed Pad
MAX16999
Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
________________________________________________________________ Maxim Integrated Products 1
INPUT
2.5V TO 5.5V
OUTPUT
0.5V TO 3.3V
ON
C IN
1 μF
OFF
TO CONTROLLER
GND
IN OUT
CRES
RESET
EN
EP
LOGIC
SUPPLY
MAX16999
C OUT
4.7 μF
C CRES
15nF
Typical Operating Circuit
19-4114; Rev 0; 4/08
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.
Ordering Information
* Insert the desired two-digit suffix (see the Selector Guide) into
the blanks to complete the part number. Contact the factory for
other output voltages or other package options.
+ Denotes a lead-free package and RoHS compliant.
** EP = Exposed pad.
PART* TEMP RANGE PIN-PACKAGE
MAX16999AUA_ _+ -40°C to +125°C 8 µMAX-EP**
1
2
3
4
+
8
7
6
5
IN
IN
EN
GND
*EXPOSED PAD
* RESET
CRES
OUT
OUT
MAX16999
μMAX
TOP VIEW
Pin Configuration
Selector Guide appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.