MAX16999 Datasheet PDF - Maxim Integrated Products


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MAX16999
Maxim Integrated Products

Part Number MAX16999
Description Linear Regulator
Page 10 Pages

MAX16999 datasheet pdf
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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.



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Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
ABSOLUTE MAXIMUM RATINGS
IN, RESET to GND .................................................-0.3V to +6.0V
OUT, CRES, EN to GND ..............................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA = +70°C) (Note 1)
(derate 10.3mW/°C above +70°C)
8-Pin µMAX (single-layer PCB) ..................................824.7mW
(derate 12.9mW/°C above +70°C)
8-Pin µMAX (multilayer PCB)....................................1030.9mW
Package Junction-to-Case Thermal Resistance (θJC) ......4.8°C/W
Package Junction-to-Ambient Thermal Resistance (θJA)
(single-layer PCB) ........................................................97°C/W
Package Junction-to-Ambient Thermal Resistance (θJA)
(multilayer PCB) ........................................................77.6°C/W
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specifications. For detailed information
on packaging thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
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.
DC ELECTRICAL CHARACTERISTICS
(For devices with VOUT 1.5V, VIN = 3.3V. For devices with VOUT > 1.5V, VIN = 5V. EN = IN, TJ = -40°C to +125°C, CIN = 1µF, COUT
= 4.7µF, CCRES = 1000pF, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
IN Operating Voltage
IN Undervoltage-Lockout (UVLO)
Threshold
IN UVLO Hysteresis
Output-Voltage Accuracy
Current Limit
Ground Current
Dropout Voltage
Load Regulation
Line Regulation
Power-Supply Rejection Ratio
SYMBOL
VIN
CONDITIONS
VUVLO
VIN rising
http://www.DataSheet4U.net/
VIN = VOUT + 2V
VOUT 1.5V,
IOUT = 1mA to 80mA
VOUT > 1.5V,
IOUT = 1mA to 100mA
ILIM OUT = GND
IOUT = 100µA
IQ
IOUT = 100mA
VIN - VOUT IOUT = 80mA, VOUT = 3.3V (Note 2)
ΔVOUT/ΔIOUT IOUT = 1mA to 80mA
ΔVOUT/ΔVIN IOUT = 80mA
VOUT < 1V,
2.5V < VIN < 5.5V
VOUT 1V, (VOUT +
1.5V) < VIN < 5.5V
PSRR
IOUT = 10mA,
500mVP-P, VIN -
VOUT > 1.5V
f = 100Hz
f = 100kHz
MIN TYP MAX UNITS
2.5 5.5 V
1.94 2.2
V
45 mV
-2.5 +2.5
%
-2.5 +2.5
105 150
13
23
20
mA
µA
0.035 0.1
V
0.1 mV/mA
0.4
mV/V
1.8
70
dB
40
2 _______________________________________________________________________________________



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Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
DC ELECTRICAL CHARACTERISTICS (continued)
(For devices with VOUT 1.5V, VIN = 3.3V. For devices with VOUT > 1.5V, VIN = 5V. EN = IN, TJ = -40°C to +125°C, CIN = 1µF, COUT
= 4.7µF, CCRES = 1000pF, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
EN
Standby Current
Turn-On Delay
Logic Levels
Pullup Resistance
Pulldown Resistance
RESET
Threshold Accuracy
Threshold Hysteresis
RESET Open-Drain Leakage
Output Low Voltage
RESET Timeout
Output Deglitch Time
CRES
Charge Current
Discharge Current
Threshold
THERMAL PROTECTION
Thermal-Shutdown Temperature
Thermal-Shutdown Hysteresis
SYMBOL
CONDITIONS
ISTB
ENH
ENL
REN-H
REN-L
EN = GND
From EN = high to VOUT = 100mV
Circuit active
Circuit inactive
VEN = 75% VIN
VEN = 25% VIN
VRES
VRES,HYST
VRES,OL
tRSOFF
tDEGLITCH
VOUT falling
RESET = high impedance, VRESET = 5mV
ILOAD = 250µA
CRES = GND
VOUT < VRES
ICRES,UP
ICRES,DN
VCRES,THRS
http://www.DataSheet4U.net/
RESET goes from low to high impedance
TSHDN
ΔTSHDN
MIN TYP MAX UNITS
0.3 1
µA
10 µs
70
%VIN
30
120 kΩ
120 kΩ
79.5
30
82.5
2.5
30
85.5
200
100
80
%VOUT
%VOUT
nA
mV
ms
µs
8 10 12
1
575 600 625
µA
mA
mV
+165
15
°C
°C
Note 2: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
Note 3: Dropout voltage is defined as VIN - VOUT when VOUT is 2% below its value for VIN = VOUT + 2V.
_______________________________________________________________________________________ 3



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Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
Typical Operating Characteristics
(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.)
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
OUTPUT-VOLTAGE ACCURACY
vs. LOAD CURRENT
VOUT = 1V
VOUT = 0.5V
VOUT = 3.3V
20 40 60 80
LOAD CURRENT (mA)
100
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
0.994
2.5
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
IOUT = 0.1mA
IOUT = 1mA
IOUT = 50mA IOUT = 100mA
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
OUTPUT-VOLTAGE ACCURACY
vs. TEMPERATURE
0.5
VOUT = 1V
0.4
IOUT = 1mA
0.3 IOUT = 0.1mA
0.2
0.1
0
-0.1 IOUT = 100mA
-0.2 IOUT = 50mA
-0.3
-0.4
-0.5
-50
0 50 100
TEMPERATURE (°C)
150
40
35
30
25
20
15
10
5
0
0
GROUND-PIN CURRENT
vs. LOAD CURRENT
VOUT = 3.3V
VOUT = 0.5V
VOUT = 1V
20 40 60 80
LOAD CURRENT (mA)
100
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
50
VOUT = 0.5V
45
40
http://www.DataSheet4U.net/
35 IOUT = 100mA
30
IOUT = 50mA
25
20
15
10
5
IOUT = 0.1mA
IOUT = 1mA
0
012345
INPUT VOLTAGE (V)
6
GROUND-PIN CURRENT
vs. TEMPERATURE
30
IOUT = 100mA
25 IOUT = 50mA
20
15
10 IOUT = 0.1mA IOUT = 1mA
5
0
-50 -25
VOUT = 1V
0 25 50 75 100 125 150
TEMPERATURE (°C)
170
165
160
155
150
145
140
135
130
2.5
CURRENT LIMIT
vs. INPUT VOLTAGE
3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
5.5
DROPOUT VOLTAGE
vs. LOAD CURRENT
100
VOUT = 3.3V
90
80
70
60
50
40
30
20
10
0
0 25 50 75 100 125
LOAD CURRENT (mA)
150
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
80
70
60
50
40
30
20
10
0
0.01
VOUT = 0.5V, IOUT = 10mA
0.1 1 10 100
FREQUENCY (kHz)
1000
4 _______________________________________________________________________________________




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