LDO Regulators. MAX1963A Datasheet

MAX1963A Regulators. Datasheet pdf. Equivalent


Maxim Integrated MAX1963A
19-3684; Rev 1; 5/12
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
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
Pin Configurations
TOP VIEW
+
IN 1
6 OUT
MAX1963A
GND 2 MAX1976A 5 I.C.
8 765
MAX1963A
MAX1976A
SHDN 3
4 RESET + 1 2 3 4
THIN SOT23
TDFN
2mm x 2mm
6 54
MAX1963A
MAX1976A
+1 2 3
TDFN
3mm x 3mm
Selector Guide appears at end of data sheet.
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)
Ordering Information
PART*
TEMP RANGE PIN-PACKAGE
MAX1963AEZT_ _ _+T -40°C to +85°C 6 Thin SOT23-6
MAX1963AETT_ _ _+T -40°C to +85°C 6 TDFN-6 3mm x 3mm
MAX1963AETA_ _ _+T -40°C to +85°C 8 TDFN-8 2mm x 2mm
MAX1976AEZT_ _ _+T -40°C to +85°C 6 Thin SOT23-6
MAX1976AETT_ _ _+T -40°C to +85°C 6 TDFN-6 3mm x 3mm
MAX1976AETA_ _ _+T -40°C to +85°C 8 TDFN-8 2mm x 2mm
MAX1976AETT_ _ _/V+T -40°C to +85°C 6 TDFN-6 3mm x 3mm
*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.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive-qualified part.
Typical Operating Circuit
INPUT
1.62V TO 3.6V
CIN
1µF
ON
OFF
UP TO
OUTPUT
300mA 0.75V TO 3.0V
IN OUT
MAX1963A
MAX1976A
COUT LOGIC
4.7µF SUPPLY
100k
SHDN
RESET
TO µC
GND
________________________________________________________________ Maxim Integrated Products 1
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.


MAX1963A Datasheet
Recommendation MAX1963A Datasheet
Part MAX1963A
Description 300mA LDO Regulators
Feature MAX1963A; 19-3684; Rev 1; 5/12 MAX1963A/MAX1976A Low-Input-Voltage, 300mA LDO Regulators with RESET in SOT a.
Manufacture Maxim Integrated
Datasheet
Download MAX1963A Datasheet




Maxim Integrated MAX1963A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
ABSOLUTE MAXIMUM RATINGS
IN, SHDN, RESET to GND .....................................-0.3V to +4.0V
OUT to GND ................................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (multilayer board, TA = +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
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.
ELECTRICAL CHARACTERISTICS
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = -40°C to +85°C, unless otherwise
noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Input Voltage
Input Undervoltage Lockout
SYMBOL
VIN
VUVLO
CONDITIONS
VIN rising or falling
(180mV typical hysteresis)
MIN TYP MAX UNITS
1.62 3.60 V
1.30 1.60 V
Output Voltage Accuracy
Maximum Output Current
Current Limit
Ground Current
Dropout Voltage
Load Regulation
Line Regulation
Output Noise
PSRR
SHUTDOWN
Shutdown Supply Current
SHDN Input Logic Levels
SHDN Input Bias Current
Turn-On Delay
IOUT = 1mA to 300mA,
VIN = (VOUT + 0.5V) to +3.6V
IOUT Continuous
ILIM VOUT = 96% of nominal value
No load
IQ IOUT = 300mA
Dropout (Note 2)
VIN - VOUT IOUT = 300mA, VOUT 1.8V (Note 2)
VLDR IOUT = 1mA to 300mA
VLNR VIN = (VOUT + 0.5V) to +3.6V, IOUT = 1mA
10Hz to 100kHz, IOUT = 10mA, VOUT = 1.5V
f < 1kHz, IOUT = 10mA
-2.5
300
450
-0.15
±0.5
550
70
90
70
100
0.02
+0.01
86
70
+2.5
%
mARMS
650 mA
140
µA
200
0.3
+0.15
mV
%
%/V
µVRMS
dB
IOFF
SHDN = GND
TA = +25°C
TA = +85°C
0.001
0.01
1
VIH VIN = 1.62V to 3.6V
1.4
VIL VIN = 1.62V to 3.6V
0.6
ISHDN
VSHDN = 0V or 3.6V
TA = +25°C
TA = +85°C
From SHDN high to OUT high, VOUT = 1.8V
1 100
5
90
µA
V
nA
µs
2 _______________________________________________________________________________________



Maxim Integrated MAX1963A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
ELECTRICAL CHARACTERISTICS (continued)
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = -40°C to +85°C, unless otherwise
noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
RESET OUTPUT
Reset Threshold Accuracy
VOUT falling (1.7% typical hysteresis)
80 82.5 85 %VOUT
RESET Output Low Voltage
IRESET = 100µA
VOL VIN = +1.0V, IRESET = 100µA
1 100
mV
30 400
RESET Output High Leakage
IOH
VRESET = 3.6V,
RESET not asserted
TA = +25°C
TA = +85°C
0.001
0.01
1
µA
Reset Delay
tRP
From VOUT high to RESET
rising
MAX1963A
MAX1976A
2.2 3.2 5.5
70 100 160
ms
THERMAL PROTECTION
Thermal-Shutdown Temperature
T SHDN
+165
°C
Thermal-Shutdown Hysteresis
T SHDN
15 °C
Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: The dropout voltage is defined as VIN - VOUT, when VOUT is 4% lower than the value of VOUT when VIN = VOUT + 0.5V.
Typical Operating Characteristics
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
0.2
0.1
VOUT = +3.0V
VOUT = +1.5V
0
-0.1 VOUT = +0.75V
OUTPUT VOLTAGE ACCURACY
vs. INPUT VOLTAGE
0.50
VOUT = 1.5V
0.25
IOUT = 0mA
0
-0.25
IOUT = 100mA
IOUT = 300mA
-0.2
0
50 100 150 200 250 300
LOAD CURRENT (mA)
-0.50
1.4
1.8 2.2 2.6 3.0
INPUT VOLTAGE (V)
3.4
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
1.5
VOUT = +1.5V
1.0
0.5
IOUT = 0mA, 100mA, 300mA
0
-0.5
-1.0
-1.5
-40
-15 10 35 60
TEMPERATURE (°C)
85
_______________________________________________________________________________________ 3





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)