MAXIM MAX1963AETT

19-3684; Rev 0; 5/05
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
The MAX1963A/MAX1976A low-dropout linear regulators 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.
Features
♦ Low 1.62V Minimum Input Voltage
♦ Guaranteed 300mA Output Current
♦ ±2.5% Accuracy Over Load/Line/Temp
♦ Low 100mV Dropout at 300mA Load
♦ 2.2ms (MAX1963A) or 70ms (MAX1976A)
RESET Output Flag
♦ Supply Current Independent of Load and
Dropout Voltage
♦ Logic-Controlled Shutdown
♦ Thermal-Overload and Short-Circuit Protection
Applications
♦ Preset Output Voltages (0.75V to 3.0V)
Notebook/Handheld Computers
♦ Tiny 6-Pin Thin SOT23 Package (<1.1mm High)
Cellular/Smart/PDA Phones
♦ TDFN Package (<0.8mm High)
DSC, CD/MP3 Players
Ordering Information
PCMCIA Cards
Pin Configurations
IN 1
N.C.
SHDN
GND
8
7
6
5
6 OUT
MAX1963A
MAX1976A
2
3
4
RESET
THIN SOT23
1
I.C.
4 RESET
N.C.
SHDN 3
IN
SHDN
GND
TDFN
2mm x 2mm
6
5
4
TEMP RANGE PIN-PACKAGE
-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
*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.
MAX1963A
MAX1976A
5 I.C.
OUT
GND 2
IN
TOP VIEW
PART*
MAX1963AEZT_ _ _-T
Typical Operating Circuit
INPUT
1.62V TO 3.6V
CIN
1µF
IN
OUT
MAX1963A
MAX1976A
MAX1963A
MAX1976A
UP TO
300mA
OUTPUT
0.75V TO 3.0V
COUT LOGIC
4.7µF SUPPLY
100kΩ
ON
RESET
SHDN
3
RESET
2
I.C.
OUT
1
TO µC
OFF
GND
TDFN
3mm x 3mm
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX1963A/MAX1976A
General Description
MAX1963A/MAX1976A
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 (TA = +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
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
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
CONDITIONS
MAX
UNITS
1.62
MIN
3.60
V
VIN rising or falling
(180mV typical hysteresis)
1.30
1.60
V
IOUT = 1mA to 300mA,
VIN = (VOUT + 0.5V) to +3.6V
-2.5
±0.5
+2.5
%
550
650
No load
70
140
IOUT = 300mA
90
Dropout (Note 2)
70
VIN
VUVLO
Output Voltage Accuracy
Maximum Output Current
IOUT
Continuous
300
Current Limit
ILIM
VOUT = 96% of nominal value
450
Ground Current
Dropout Voltage
IQ
VIN - VOUT IOUT = 300mA, VOUT ≥ 1.8V (Note 2)
Load Regulation
∆VLDR
IOUT = 1mA to 300mA
Line Regulation
∆VLNR
VIN = (VOUT + 0.5V) to +3.6V, IOUT = 1mA
-0.15
TYP
mARMS
mA
µA
100
200
0.02
0.3
mV
%
+0.01
+0.15
% /V
Output Noise
10Hz to 100kHz, IOUT = 10mA, VOUT = 1.5V
86
µVRMS
PSRR
f < 1kHz, IOUT = 10mA
70
dB
SHUTDOWN
Shutdown Supply Current
SHDN Input Logic Levels
SHDN Input Bias Current
Turn-On Delay
2
IOFF
SHDN = GND
VIH
VIN = 1.62V to 3.6V
VIL
VIN = 1.62V to 3.6V
ISHDN
VSHDN = 0 or 3.6V
TA = +25°C
0.001
TA = +85°C
0.01
1
1.4
0.6
TA = +25°C
1
TA = +85°C
5
From SHDN high to OUT high, VOUT = 1.8V
90
_______________________________________________________________________________________
100
µA
V
nA
µs
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
(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
80
MAX
UNITS
%VOUT
RESET OUTPUT
Reset Threshold Accuracy
VOUT falling (1.7% typical hysteresis)
82.5
85
I RESET = 100µA
1
100
VIN = +1.0V, I RESET = 100µA
30
400
1
RESET Output Low Voltage
VOL
RESET Output High Leakage
IOH
V RESET = 3.6V,
RESET not asserted
TA = +25°C
0.001
TA = +85°C
0.01
Reset Delay
tRP
From VOUT high to RESET
rising
MAX1963A
2.2
3.2
5.5
MAX1976A
70
100
160
mV
µA
ms
THERMAL PROTECTION
Thermal-Shutdown Temperature
Thermal-Shutdown Hysteresis
T SHDN
+165
°C
∆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.)
0
VOUT = +0.75V
-0.1
0.25
IOUT = 0mA
0
IOUT = 100mA
-0.25
IOUT = 300mA
0
50
100
150
200
LOAD CURRENT (mA)
250
300
VOUT = +1.5V
1.0
0.5
IOUT = 0mA, 100mA, 300mA
0
-0.5
-1.0
-1.5
-0.50
-0.2
1.5
MAX1963/76 toc03
VOUT = 1.5V
OUTPUT VOLTAGE ACCURACY (%)
VOUT = +1.5V
MAX1963/76 toc02
0.1
0.50
OUTPUT VOLTAGE ACCURACY (%)
MAX1963/76 toc01
OUTPUT VOLTAGE ACCURACY (%)
0.2
VOUT = +3.0V
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
OUTPUT VOLTAGE ACCURACY
vs. INPUT VOLTAGE
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
1.4
1.8
2.2
2.6
3.0
INPUT VOLTAGE (V)
3.4
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
3
MAX1963A/MAX1976A
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics (continued)
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.)
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
100
VOUT = +1.5V
90
VOUT = +0.75V
80
70
IOUT = 100mA
100
IOUT = 300mA
80
60
IOUT = 0mA
40
120
MAX1963/76 toc06
MAX1963/76 toc05
GROUND-PIN CURRENT (µA)
VOUT = +3.0V
110
120
MAX1963/76 toc04
120
GROUND-PIN CURRENT
vs. TEMPERATURE
110
IOUT = 100mA
GROUND-PIN CURRENT (µA)
GROUND-PIN CURRENT
vs. LOAD CURRENT
GROUND-PIN CURRENT (µA)
100
90
IOUT = 300mA
80
IOUT = 0mA
70
20
60
VOUT = 1.5V
0
0.01
0.1
1
10
100
1000
50
1.2
1.6
LOAD CURRENT (mA)
2.0
2.4
2.8
3.2
3.6
-40
-20
INPUT VOLTAGE (V)
DROPOUT VOLTAGE
vs. LOAD CURRENT
20
40
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
80
MAX1963/76 toc07
120
100
80
0
TEMPERATURE (°C)
VOUT = +0.75V
70
60
60
VOUT = +3.0V
VOUT = +1.5V
50
PSRR (dB)
VOUT = +1.8V
MAX1963/76 toc08
60
VDROPOUT (mV)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
VOUT = +3.0V
40
30
40
20
20
10
IOUT = 10mA
0
0
0
50
100
150
200
250
0.1
300
1
10
FREQUENCY (kHz)
LINE-TRANSIENT RESPONSE
LINE-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1963/76 toc09
VIN
3.5V
1000
MAX1963/76 toc10
500mV/div
500mV/div
VIN
1.8V
VOUT
1.5V
1.5V
VOUT
10mV/div
AC-COUPLED
40µs/div
4
100
LOAD CURRENT (mA)
10mV/div
AC-COUPLED
40µs/div
_______________________________________________________________________________________
60
80
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
LOAD-TRANSIENT RESPONSE
MAX1963/76 toc11
MAX1963/76 toc12
200mA
IOUT
20mA
200mA/div
VOUT
20mV/div
AC-COUPLED
VIN = 3.6V
VOUT = 1.5V
200mA
IOUT
20mA
200mA/div
VOUT
20mV/div
AC-COUPLED
20µs/div
VIN = 1.8V
VOUT = 1.5V
20µs/div
MAX1976A
SHUTDOWN/RESET RESPONSE
SHUTDOWN RESPONSE
MAX1963/76 toc13
MAX1963/76 toc14
VSHDN
VSHDN
1V/div
0
1V/div
0
VOUT
VOUT
1V/div
0
1V/div
VRESET
500mV/div
0
0
100µs/div
40ms/div
MAX1976A
LINE/RESET RESPONSE
MAX1963/76 toc15
VIN
2V/div
0
VOUT
1V/div
0
VRESET
1V/div
0
200ms/div
_______________________________________________________________________________________
5
MAX1963A/MAX1976A
Typical Operating Characteristics (continued)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
Pin Description
PIN
THIN
SOT23
6-PIN
TDFN
(3mm x 3mm)
8-PIN
TDFN
(2mm x 2mm)
NAME
FUNCTION
1
6
8
IN
Regulator Input. Supply voltage can range from +1.62V to +3.6V. Bypass IN
with at least a 1µF ceramic capacitor to GND (see the Capacitor Selection and
Regulator Stability section).
2
—
—
GND
Ground. GND also functions as a heatsink. Solder to a large pad or circuitboard ground plane to maximize SOT23 power dissipation.
—
4
5
GND
Ground
3
5
6
SHDN
Active-Low Shutdown Input. A logic-low reduces supply current to below 1µA.
Connect to IN or logic-high for normal operation.
Open-Drain, Active-Low Reset Output. RESET rises 3.2ms (MAX1963A) or
100ms (MAX1976A) after the output has achieved regulation. RESET falls
immediately if VOUT drops below 82.5% of its nominal voltage, or if the
MAX1963A/MAX1976A are shut down.
4
3
4
RESET
5
2
3
I.C.
Internally Connected. Leave floating or connect to GND.
6
1
1
OUT
Regulator Output. Sources up to 300mA. Bypass with a 4.7µF low-ESR
ceramic capacitor to GND.
—
—
2, 7
N.C.
—
Exposed
Pad
—
EP
No Connection. Not internally connected.
Ground. EP also functions as a heatsink. Solder EP to a large pad or circuitboard ground plane to maximize TDFN power dissipation.
IN
SHDN
SHUTDOWN
LOGIC
ERROR
AMP
MOS DRIVER
WITH ILIMIT
P
OUT
MAX1963A
MAX1976A
THERMAL
SENSOR
REF
82.5%
REF
RESET
TIMER
GND
Figure 1. Functional Diagram
6
_______________________________________________________________________________________
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
The MAX1963A/MAX1976A are low-dropout, high-accuracy, low-quiescent-current linear regulators designed
primarily for battery-powered applications. These devices
supply loads up to 300mA and are available with preset
output voltages from +0.75V to +3.0V. As illustrated in
Figure 1, the MAX1963A/MAX1976A consist of a reference, an error amplifier, a p-channel pass transistor, an
internal feedback voltage-divider, and a power-good
comparator.
The reference is connected to the error amplifier, which
compares this reference with the feedback voltage and
amplifies the difference. If the feedback voltage is
lower than the reference voltage, the pass-transistor
gate is pulled lower, which allows more current to pass
to the output and increases the output voltage. If the
feedback voltage is too high, the pass-transistor gate is
pulled up, allowing less current to pass to the output.
Internal p-Channel Pass Transistor
The MAX1963A/MAX1976A feature a 0.33Ω (RDS(ON))
p-channel MOSFET pass transistor. Unlike similar
designs using pnp pass transistors, p-channel
MOSFETs require no base drive, which reduces quiescent current. The pnp-based regulators also waste considerable current in dropout when the pass transistor
saturates and use high base-drive currents under large
loads. The MAX1963A/MAX1976A do not suffer from
these problems and consume only 90µA (typ) of quiescent current under heavy loads, as well as in dropout.
Shutdown
Pull SHDN low to enter shutdown. During shutdown, the
output is disconnected from the input, an internal 1.5kΩ
resistor pulls OUT to GND, RESET is actively pulled
low, and the supply current drops below 1µA.
RESET Output
The MAX1963A/MAX1976A microprocessor (µP) supervisory circuitry asserts a guaranteed logic-low reset during
power-up, power-down, and brownout conditions down
to +1V. RESET asserts when VOUT is below the reset
threshold and remains asserted for at least tRP after VOUT
rises above the reset threshold of regulation.
Current Limit
The MAX1963A/MAX1976A monitor and control the pass
transistor’s gate voltage, limiting the output current to
450mA (min). If the output exceeds ILIM, the MAX1963A/
MAX1976A output voltage drops.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipation in the MAX1963A/MAX1976A. When the junction
temperature exceeds TJ = +165°C, a thermal sensor
turns off the pass transistor, allowing the IC to cool. The
thermal sensor turns the pass transistor on again after
the junction temperature cools by 15°C, resulting in a
pulsed output during continuous thermal-overload conditions. Thermal-overload protection safeguards the
MAX1963A/MAX1976A in the event of fault conditions.
For continuous operation, do not exceed the absolute
maximum junction-temperature rating of TJ = +150°C.
Operating Region and Power Dissipation
The MAX1963A/MAX1976A maximum power dissipation depends on the thermal resistance of the IC package and circuit board, the temperature difference
between the die junction and ambient air, and the rate
of airflow. The power dissipated in the device is P =
IOUT ✕ (VIN - VOUT). The maximum allowed power dissipation is:
PMAX = (TJ(MAX) - TA) / (θJC + θCA)
where (T J(MAX) - T A ) is the temperature difference
between the MAX1963A/MAX1976A die junction and
the surrounding air, θJC is the thermal resistance of the
junction to the case, and θCA is the thermal resistance
from the case through the PC board, copper traces,
and other materials to the surrounding air. For best
heatsinking, expand the copper connected to the
exposed paddle or GND.
The MAX1963A/MAX1976A deliver up to 300mA and
operate with an input voltage up to +3.6V. However,
when using the 6-pin SOT23 version, high output currents can only be sustained when the input-output differential voltage is less than 2V, as shown in Figure 2.
The maximum allowed power dissipation for the 6-pin
TDFN is 1.951W at TA = +70°C. Figure 3 shows that the
maximum input-output differential voltage is not limited
by the TDFN package power rating.
Applications Information
Capacitor Selection and
Regulator Stability
Capacitors are required at the MAX1963A/MAX1976A
input and output for stable operation over the full temperature range and with load currents up to 300mA.
Connect a 1µF ceramic capacitor between IN and GND
and a 4.7µF low-ESR ceramic capacitor between OUT
and GND. The input capacitor (CIN) lowers the source
impedance of the input supply. Use larger output
capacitors to reduce noise and improve load-transient
response, stability, and power-supply rejection.
The output capacitor’s equivalent series resistance
(ESR) affects stability and output noise. Use output
_______________________________________________________________________________________
7
MAX1963A/MAX1976A
Detailed Description
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
MAXIMUM OUTPUT CURRENT (mA)
400
TA = +85°C
TA = +70°C
300
200
100
0
0.5
1.0
1.5
2.0
2.5
3.0
(VIN - VOUT) (V)
Figure 2. Power Operating Regions for the 6-Pin SOT23:
Maximum Output Current vs. Input Voltage
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
400
TA = +85°C
MAXIMUM RECOMMENDED
OUTPUT CURRENT 6-PIN TDFN 3mm x 3mm
The MAX1963A/MAX1976A are designed to operate
with low dropout voltages and low quiescent currents in
battery-powered systems while still maintaining good
noise, transient response, and AC rejection. See the
Typical Operating Characteristics for a plot of PowerSupply Rejection Ratio (PSRR) versus Frequency.
When operating from noisy sources, improved supplynoise rejection and transient response can be achieved
by increasing the values of the input and output bypass
capacitors and through passive filtering techniques.
The MAX1963A/MAX1976A load-transient response
(see the Typical Operating Characteristics) shows two
components of the output response: a near-zero DC
shift from the output impedance due to the load-current
change, and the transient response. A typical transient
response for a step change in the load current from 20mA
to 200mA is 20mV. Increasing the output capacitor’s value
and decreasing the ESR attenuates the overshoot.
Input-Output (Dropout) Voltage
300
200
100
0
0
0.5
1.0
1.5
2.0
2.5
3.0
(VIN - VOUT) (V)
Figure 3. Power Operating Regions for the 6-Pin TDFN:
Maximum Output Current vs. Input Voltage
8
capacitors with an ESR of 30mΩ or less to ensure stability and optimize transient response. Surface-mount
ceramic capacitors have very low ESR and are commonly available in values up to 10µF. Connect CIN and
COUT as close to the MAX1963A/MAX1976A as possible to minimize the impact of PC board trace inductance.
Noise, PSRR, and Transient Response
MAXIMUM RECOMMENDED
OUTPUT CURRENT 6-PIN SOT23
0
MAXIMUM OUTPUT CURRENT (mA)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
A regulator’s minimum input-output voltage difference
(dropout voltage) determines the lowest usable supply
voltage. In battery-powered systems, this determines the
useful end-of-life battery voltage. Because the
MAX1963A/MAX1976A use a p-channel MOSFET pass
transistor, the dropout voltage is a function of drain-tosource on-resistance (RDS(ON) = 0.33Ω) multiplied by
the load current (see the Typical Operating
Characteristics).
VDROPOUT = VIN - VOUT = 0.33Ω ✕ IOUT
The MAX1963A/MAX1976A ground current reduces to
70µA in dropout.
_______________________________________________________________________________________
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
MAX1963A
TOP MARK
VOUT (V)
MAX1976A
TOP MARK
SUFFIX
SOT
TDFN
(3mm x 3mm)
TDFN
(2mm x 2mm)
SOT
TDFN
(3mm x 3mm)
TDFN
(2mm x 2mm)
0.75
075
AACJ
ALM
—
AACU
ALX
—
0.85
085
—
—
—
AACV
ALY
—
0.90
090
AACK
ALN
—
AACW
ALZ
—
1.00
100
AACL
ALO
—
AACX
AMA
—
1.10
110
AACM
ALP
—
AACY
AMB
—
1.20
120
AACN
ALQ
—
AACZ
AMC
—
1.30
130
AACO
ALR
—
AADA
AMD
AAD
1.50
150
AACP
ALS
—
AADB
AME
AAE
1.60
160
—
—
—
AADC
AMF
—
1.80
180
AACQ
ALT
—
AADD
AMG
—
1.85
185
AACR
ALU
—
AADE
AMH
—
2.50
250
AACS
ALV
—
AADF
AMI
—
2.85
285
—
—
—
AADG
AMJ
—
3.00
300
AACT
ALW
—
AADH
AMK
—
Note: Standard voltage options, shown in bold, are available. Contact the factory for other output voltages between 1.5V and 4.5V.
Minimum order quantity is 15,000 units.
Chip Information
TRANSISTOR COUNT: 2556
PROCESS: BiCMOS
_______________________________________________________________________________________
9
MAX1963A/MAX1976A
Selector Guide
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
10
______________________________________________________________________________________
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
______________________________________________________________________________________
11
MAX1963A/MAX1976A
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
6, 8, &10L, DFN THIN.EPS
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
D2
D
A2
PIN 1 ID
N
0.35x0.35
b
PIN 1
INDEX
AREA
E
[(N/2)-1] x e
REF.
E2
DETAIL A
e
k
A1
CL
CL
A
L
L
e
e
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
-DRAWING NOT TO SCALE-
12
21-0137
______________________________________________________________________________________
G
1
2
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
COMMON DIMENSIONS
MIN.
MAX.
D
0.70
2.90
0.80
3.10
E
A1
2.90
0.00
3.10
0.05
L
k
0.20
0.40
0.25 MIN.
A2
0.20 REF.
SYMBOL
A
PACKAGE VARIATIONS
PKG. CODE
N
D2
E2
e
JEDEC SPEC
b
[(N/2)-1] x e
DOWNBONDS
ALLOWED
T633-1
6
1.50±0.10
2.30±0.10
0.95 BSC
MO229 / WEEA
0.40±0.05
1.90 REF
NO
T633-2
6
1.50±0.10
2.30±0.10
0.95 BSC
MO229 / WEEA
0.40±0.05
1.90 REF
NO
T833-1
8
1.50±0.10
2.30±0.10
0.65 BSC
MO229 / WEEC
0.30±0.05
1.95 REF
NO
T833-2
8
1.50±0.10
2.30±0.10
0.65 BSC
MO229 / WEEC
0.30±0.05
1.95 REF
NO
T833-3
8
1.50±0.10
2.30±0.10
0.65 BSC
MO229 / WEEC
0.30±0.05
1.95 REF
YES
T1033-1
10
1.50±0.10
2.30±0.10
0.50 BSC
MO229 / WEED-3
0.25±0.05
2.00 REF
NO
T1433-1
14
1.70±0.10
2.30±0.10
0.40 BSC
----
0.20±0.05
2.40 REF
YES
T1433-2
14
1.70±0.10
2.30±0.10
0.40 BSC
----
0.20±0.05
2.40 REF
NO
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
-DRAWING NOT TO SCALE-
21-0137
G
2
______________________________________________________________________________________
2
13
MAX1963A/MAX1976A
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
8L TDFN EXPOSED PADS EPS
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
PACKAGE OUTLINE
8L TDFN EXPOSED PAD, 2x2x0.80mm
21-0168
14
______________________________________________________________________________________
A
1
2
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
COMMON DIMENSIONS
SYMBOL
MIN.
MAX.
A
0.70
0.80
D
1.90
2.10
E
1.90
2.10
A1
0.00
0.05
L
0.20
0.40
k
0.25 MIN.
A2
0.20 REF.
PACKAGE VARIATIONS
PKG. CODE
N
D2
E2
e
JEDEC SPEC
b
[(N/2)-1] x e
DOWNBONDS
ALLOWED
T822-1
8
0.70±0.10
1.30±0.10
0.50 TYP.
MO229
0.25±0.05
1.50 REF
NO
PACKAGE OUTLINE
8L TDFN EXPOSED PAD, 2x2x0.80mm
21-0168
A
2
2
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2005 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products, Inc.
MAX1963A/MAX1976A
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)