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PDF MAX16999 Data sheet ( Hoja de datos )
| Número de pieza | MAX16999 | |
| Descripción | Linear Regulator | |
| Fabricantes | Maxim Integrated Products | |
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19-4114; Rev 0; 4/08
Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
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
Typical Operating Circuit
Features
♦ Preset 0.5V to 3.3V Output Voltage Range
♦ Up to 100mA Output Current at TA = +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
Ordering Information
PART*
MAX16999AUA_ _+
TEMP RANGE PIN-PACKAGE
-40°C to +125°C 8 µMAX-EP**
*Insert the desired two-digit suffix (see the Selector Guide) into
thehttp://www.DataSheet4U.net/ 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.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Selector Guide appears at end of data sheet.
Pin Configuration
INPUT
2.5V TO 5.5V
CIN
1μF
ON
OFF
IN OUT
MAX16999
EN CRES
RESET
EP GND
OUTPUT
0.5V TO 3.3V
COUT
4.7μF
LOGIC
SUPPLY
CCRES
15nF
TO CONTROLLER
TOP VIEW
OUT 1 +
OUT 2
CRES 3
MAX16999
RESET 4 *
μMAX
8 IN
7 IN
6 EN
5 GND
*EXPOSED PAD
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
Typical Operating Characteristics (continued)
(For devices with VOUT < 1.5V, VIN = 3.3V. For devices with VOUT > 1.5V, VIN = 5V. EN = IN, CIN = 1µF, COUT = 4.7µF, CCRES = 1000pF,
TA = + 25°C, unless otherwise noted.)
LINE-TRANSIENT RESPONSE
MAX16999 toc10
LINE-TRANSIENT RESPONSE NEAR
DROPOUT
MAX16999 toc11
4V
VIN 3.5V
1.6V
VIN 0.6V
VOUT
100mV/div
AC-COUPLED
200μs/div
VOUT = 0.5V
LOAD-TRANSIENT RESPONSE
MAX16999 toc12
50mA/div
IOUT 0
VOUT
200mV/div
AC-COUPLED
200μs/div
VOUT = 0.5V
http://www.DataSheet4U.net/
LOAD-TRANSIENT RESPONSE NEAR
DROPOUT
MAX16999 toc13
50mA/div
IOUT 0
VOUT
100mV/div
AC-COUPLED
VOUT = 3.3V
200μs/div
VOUT
100mV/div
AC-COUPLED
VOUT = 3.3V, VIN = VOUT + 50mV
200μs/div
SHUTDOWN RESPONSE
MAX16999 toc14
5V
VEN 0
RESET/ENABLE RESPONSE
MAX16999 toc15
5V
VEN 0
1V
VOUT
0
VOUT = 1V, IOUT = 50mA
100μs/div
VOUT
VRESET
1V
0
5V
0
VOUT = 1V, IOUT = 50mA, CCRES = 15,000pF
400μs/div
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MAX16999.PDF ] | |
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