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MAX1976AEZT285+

P1-P3P4-P6P7-P9P10-P10
General Description
The MAX1963A/MAX1976A low-dropout linear regula-
tors operate from a +1.62V to +3.6V supply and deliver
a guaranteed 300mA continuous load current with a low
100mV dropout. The high-accuracy (±0.5%) output
voltage is preset to an internally trimmed voltage in the
+0.75V to +3.0V range. An active-low, open-drain reset
output remains asserted for at least 2.2ms (MAX1963A)
or 70ms (MAX1976A) after the output voltage reaches
regulation. These devices are offered in thin SOT23 and
thin DFN packages. An internal pMOS pass transistor
allows the low supply current to remain independent of
load and dropout voltage, making these devices ideal for
portable battery-powered equipment.
Applications
Notebook/Handheld Computers
Cellular/Smart/PDA Phones
DSC, CD/MP3 Players
PCMCIA Cards
Features
o Low 1.62V Minimum Input Voltage
o Guaranteed 300mA Output Current
o ±2.5% Accuracy Over Load/Line/Temp
o Low 100mV Dropout at 300mA Load
o 2.2ms (MAX1963A) or 70ms (MAX1976A)
RESET Output Flag
o Supply Current Independent of Load and
Dropout Voltage
o Logic-Controlled Shutdown
o Thermal-Overload and Short-Circuit Protection
o Preset Output Voltages (0.75V to 3.0V)
o Tiny 6-Pin Thin SOT23 Package (<1.1mm High)
o TDFN Package (<0.8mm High)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3684; Rev 1; 5/12
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.
PART* TEMP RANGE PIN-PACKAGE
M A X1 9 6 3 A E Z T_ _ _+ T -40°C to +85°C 6 Thin SOT23-6
MAX1963AETT_ _ _+T -40°C to +85°C 6 TD FN -6 3mm x 3m m
M AX 1963AE TA_ _ _+ T -40°C to +85°C 8 TD FN -8 2mm x 2m m
M A X1 9 7 6 A E Z T_ _ _+ T -40°C to +85°C 6 Thin SOT23-6
M AX 1976AE TT_ _ _+ T -40°C to +85°C 6 TD FN -6 3mm x 3m m
M AX 1976AE TA_ _ _+ T -40°C to +85°C 8 TD FN -8 2mm x 2m m
MAX1976AETT_ _ _/V+T -40°C to +85°C 6 TD FN -6 3mm x 3m m
TOP VIEW
TDFN
3mm x 3mm
I.C.
OUT
RESET
GND
IN
SHDN
123
654
MAX1963A
MAX1976A
GND
RESET
SHDN
1
+
+
+
6
OUT
IN
MAX1963A
MAX1976A
THIN SOT23
2
3
4
I.C.
5
TDFN
2mm x 2mm
N.C.
I.C.
OUT
N.C.
IN
SHDN
123
RESET
4
876
GND
5
MAX1963A
MAX1976A
Pin Configurations
*
Insert the desired three-digit suffix (see the Selector Guide) into
the blanks to complete the part number. Contact the factory for
other output voltages.
Selector Guide appears at end of data sheet.
MAX1963A
MAX1976A
INPUT
1.62V TO 3.6V
C
OUT
4.7µF
ON
OFF
IN
C
IN
1µF
UP TO
300mA
SHDN
GND
OUTPUT
0.75V TO 3.0V
LOGIC
SUPPLY
100kΩ
TO µC
OUT
RESET
Typical Operating Circuit
+
Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive-qualified part.
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= (V
OUT
+ 0.5V) or 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 1)
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.
IN, SHDN, RESET to GND .....................................-0.3V to +4.0V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (multilayer board, T
A
= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
6-Pin TDFN (derate 23.8mW/°C above +70°C) ......1904.8mW
8-Pin TDFN (derate 11.9mW/°C above +70°C) ........953.5mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature..................................................... +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage V
IN
1.62 3.60 V
Input Undervoltage Lockout V
UVLO
V
IN
rising or falling
(180mV typical hysteresis)
1.30 1.60 V
Output Voltage Accuracy
I
OUT
= 1mA to 300mA,
V
IN
= (V
OUT
+ 0.5V) to +3.6V
-2.5 ±0.5 +2.5 %
Maximum Output Current I
OUT
Continuous 300 mA
RMS
Current Limit I
LIM
V
OUT
= 96% of nominal value 450 550 650 mA
No load 70 140
I
OUT
= 300mA 90
Ground Current I
Q
Dropout (Note 2) 70
µA
Dropout Voltage V
IN
- V
OUT
I
OUT
= 300mA, V
OUT
≥ 1.8V (Note 2) 100 200 mV
Load Regulation ∆V
LDR
I
OUT
= 1mA to 300mA 0.02 0.3 %
Line Regulation ∆V
LNR
V
IN
= (V
OUT
+ 0.5V) to +3.6V, I
OUT
= 1mA -0.15 +0.01 +0.15 % / V
Output Noise 10Hz to 100kHz, I
OUT
= 10mA, V
OUT
= 1.5V 86 µV
RMS
PSRR f < 1kHz, I
OUT
= 10mA 70 dB
SHUTDOWN
T
A
= +25°C 0.001 1
Shutdown Supply Current I
OFF
SHDN = GND
T
A
= +85°C 0.01
µA
V
IH
V
IN
= 1.62V to 3.6V 1.4
SHDN Input Logic Levels
V
IL
V
IN
= 1.62V to 3.6V 0.6
V
T
A
= +25°C 1 100
SHDN Input Bias Current I
SHDN
V
SHDN
= 0V or 3.6V
T
A
= +85°C 5
nA
Turn-On Delay From SHDN high to OUT high, V
OUT
= 1.8V 90 µs
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
_______________________________________________________________________________________ 3
Note 1: Limits are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: The dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 4% lower than the value of V
OUT
when V
IN
= V
OUT
+ 0.5V.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET OUTPUT
Reset Threshold Accuracy V
OUT
falling (1.7% typical hysteresis) 80 82.5 85 %V
OUT
I
RESET
= 100µA 1 100
RESET Output Low Voltage V
OL
V
IN
= +1.0V, I
RESET
= 100µA 30 400
mV
T
A
= +25°C 0.001 1
RESET Output High Leakage I
OH
V
RESET
= 3.6V,
RESET not asserted
T
A
= +85°C 0.01
µA
MAX1963A 2.2 3.2 5.5
Reset Delay t
RP
From V
OUT
high to RESET
rising
MAX1976A 70 100 160
ms
THERMAL PROTECTION
Thermal-Shutdown Temperature T
SHDN
+165 °C
Thermal-Shutdown Hysteresis ∆T
SHDN
15 °C
Typical Operating Characteristics
(V
IN
= (V
OUT
+ 0.5V) or 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX1963/76 toc01
LOAD CURRENT (mA)
OUTPUT VOLTAGE ACCURACY (%)
25020015010050
-0.1
0
0.1
0.2
-0.2
0300
V
OUT
= +3.0V
V
OUT
= +1.5V
V
OUT
= +0.75V
OUTPUT VOLTAGE ACCURACY
vs. INPUT VOLTAGE
MAX1963/76 toc02
INPUT VOLTAGE (V)
OUTPUT VOLTAGE ACCURACY (%)
3.02.62.21.8
-0.25
0
0.25
0.50
-0.50
1.4 3.4
I
OUT
= 300mA
I
OUT
= 100mA
I
OUT
= 0mA
V
OUT
= 1.5V
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
MAX1963/76 toc03
TEMPERATURE (°C)
OUTPUT VOLTAGE ACCURACY (%)
603510-15
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-40 85
V
OUT
= +1.5V
I
OUT
= 0mA, 100mA, 300mA
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= (V
OUT
+ 0.5V) or 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 1)
P1-P3P4-P6P7-P9P10-P10

MAX1976AEZT285+

Mfr. #:
Buy MAX1976AEZT285+
Manufacturer:
Maxim Integrated
Description:
IC REG LIN 2.85V 300MA SOT23-6
Lifecycle:
New from this manufacturer.
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