MAX6349ZPUT+T [MAXIM]
Fixed/Adjustable Positive LDO Regulator, 2.375V Min, 2.625V Max, 0.4V Dropout, BICMOS, PDSO6, SOT-23, 6 PIN;
| 型号： | MAX6349ZPUT+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Fixed/Adjustable Positive LDO Regulator, 2.375V Min, 2.625V Max, 0.4V Dropout, BICMOS, PDSO6, SOT-23, 6 PIN 稳压器 微处理器 复位电路 |
| 文件： | 总11页 (文件大小：238K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1889; Rev 2; 4/01
150mA, SOT23, Low-Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
General Description
Features
The MAX6329/MAX6349 are low-dropout, micropower
linear voltage regulators with integrated microproces-
sor reset circuits. Each is available with preset +3.3V,
+2.5V, +1.8V, or adjustable output voltages and can
deliver up to 150mA load current. Employing internal P-
channel MOSFET pass transistors, the devices con-
sume only 25µA supply current, independent of the
device load. The low supply current, low dropout volt-
age, and integrated reset functionality make these
devices ideal for battery powered portable equipment.
o Preset +3.3V/+2.5V/+1.8V or Adjustable Regulator
Output
o
3.ꢀ0 Regulator Aꢁꢁuraꢁc Oꢂer tꢃe ꢄpeꢁꢅied
Operatꢅng Range
o 25µA ꢄupplc Current
o Low 18ꢀmV Dropout at 1ꢀꢀmA Load
o ꢄmall Output Capaꢁꢅtor (1µF mꢅn ꢁeramꢅꢁ or
tantalum)
The MAX6329/MAX6349 include an internal reset circuit
that indicates when the regulator output drops below
standard microprocessor supply tolerances (-5% or
-10%). The reset output remains asserted for 100ms
(min) after the regulator output exceeds the selected
reset threshold, ensuring that supply voltages and clock
oscillators have stabilized before processor activity is
enabled. Reset outputs are available in push-pull (active-
low or -high) and open-drain (active-low) options. The
internal reset circuit replaces external microprocessor
supervisors or RC-based reset time delays.
o Zero Reꢂerse Leakage Current
o Tꢃermal and ꢄꢃort-Cꢅrꢁuꢅt Proteꢁtꢅon
o Integrated Mꢅꢁroproꢁessor Reset Cꢅrꢁuꢅt wꢅtꢃ
1ꢀꢀms (mꢅn) Tꢅmeout
o Open-Draꢅn and Pusꢃ-Pull Reset Outputs
o Regulator ꢄꢃutdown Input (MAX6329) or Manual
Reset Input (MAX6349)
o 6-Pꢅn ꢄOT23 Paꢁkage
The MAX6329/MAX6349 are optimized for use with a
1µF (min) output capacitor. The regulator output volt-
age is adjustable with an external resistor-divider net-
work at SET (reset threshold voltages track the desired
output voltage). Each device includes thermal shut-
down protection, output short-circuit protection, and
reverse leakage protection. The MAX6329 includes a
shutdown feature to reduce regulator current below
1µA (max) and the MAX6349 offers a manual reset
input to assert a microprocessor reset while the regula-
tor output is within specification.
Ordering Information
PIN-
PACKAGE
PART
TEMP. RANGE
MAX6329_ _ UT-T
MAX6349_ _ UT-T
0°C to +85°C
0°C to +85°C
6 SOT23-6
6 SOT23-6
These parts offer a choice of regulator/reset voltages and reset
outputs. From the Selector Guide, insert the desired suffix let-
ters into the blanks to complete the part number. Each device
is available in nine standard versions. Sample stock is general-
ly held on standard versions only (see Standard Versions
table). Standard versions have an order increment requirement
of 2500 pieces. Nonstandard versions have an order increment
requirement of 10,000 pieces. Contact factory for availability of
nonstandard versions.
________________________Applications
Hand-Held Instruments
Electronic Planners
Palm Top Computers
PCMCIA Cards
Pin Configuration
USB Devices
TOP VIEW
Cellular Telephones
Cordless Telephones
Modems
IN
GND
1
2
3
6
5
4
OUT
MAX6329/
MAX6349
SET
Selector Guide appears at end of data sheet.
(MR) SHDN
RESET/RESET
Typical Operating Circuit appears at end of data sheet.
ꢄOT23-6
( ) ARE FOR MAX6349 ONLY.
________________________________________________________________ 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.
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
ABꢄOLUTE MAXIMUM RATINGꢄ
IN to GND.................................................................-0.3V to +7V
Continuous Power Dissipation (T = +70°C)
A
6-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
Thermal Resistance (
) ............................................+140°C/W
JA
MR to GND ...............................................................-0.3V to +7V
Operating Temperature Range...............................0°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
RESET, RESET to GND, (Push-Pull) ..........0.3V to (V
RESET to GNd,(Open-Drain).....................-0.3V to (V
+ 0.3V)
+0.3V)
OUT
OUT
OUT to GND .............................................................-0.3V to +7V
Short-Circuit Duration.................................................Continuous
Maximum Current into Any Pin (except IN, OUT) ............ 20mA
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 CHARACTERIꢄTICꢄ
(V = +3.6V, T = 0°C to +85°C. Typical values are at I
= 0, C = 2.2µF, T = +25°C, unless otherwise noted.) (Note 1)
OUT A
IN
A
OUT
PARAMETER
ꢄYMBOL
CONDITIONꢄ
MIN
TYP
MAX
5.5
50
UNITꢄ
V
Input Voltage Range
Supply Current
V
2.5
IN
Q
I
At GND
= +25oC
25
µA
Shutdown Supply Current
REGULATOR
T
1
µA
A
Maximum Output Current
150
mA
V
V
= 4.0V to 5.5V, SET = GND, I
= 0 to
= 0 to
= 0 to
IN
OUT
OUT
OUT
3.20
3.3
2.5
1.8
3.40
2.575
1.855
100mA, T/S Versions
V
= 3.0V to 5.5V, SET = GND, I
IN
Output Voltage (Note 2)
V
2.425
1.745
OUT
100mA, Z/Y Versions
V
= 2.5V to 5.5V, SET = GND, I
IN
100mA, W/V Versions
I
I
I
I
I
I
= 10mA, T/S Versions
= 150mA, T/S Versions
= 10mA, Z/Y Versions
= 150mA, Z/Y Versions
= 10mA, W/V Versions
= 150mA, W/V Versions
20
300
25
30
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
360
35
Dropout Voltage (Note 3)
V
mV
DO
300
60
400
200
750
600
350
0.01
Output Current Limit
V
V
= V
+1V
OUT
mA
µA
IN
IN
Input Reverse Leakage Current
= 0, V
= 5.5V
1.5
OUT
Rising edge of V or SHDN to V
IN
OUT
Startup-Time Response
500
µs
V
R = 68 , SET = GND, C = 1µF
L
L
✕
V
0.3
V
IN
IL
SHDN Input Voltage
MAX6329 only
✕
V
0.8
V
IN
IH
SHDN Input Current
I
SHDN = GND or IN MAX6329 only
-1
0.1
1
µA
V
SHDN
SET Reference Voltage
V
1.20
-10
1.23
1.26
+10
SET
SET
SET Input Leakage Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
I
nA
oC
oC
160
20
2
_______________________________________________________________________________________
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
ELECTRICAL CHARACTERIꢄTICꢄ (ꢁontꢅnued)
(V = +3.6V, T = -0°C to +85°C. Typical values are at I
= 0, C
= 2.2µF, T = +25°C, unless otherwise noted.) (Note 1)
IN
A
OUT
OUT A
PARAMETER
ꢄYMBOL
CONDITIONꢄ
MIN
TYP
MAX
UNITꢄ
REꢄET CIRCUIT
MAX63_9T SET = GND
2.92
2.75
2.21
2.08
1.59
1.50
3.185
3.02
2.41
2.28
1.74
1.65
✕
MAX63_9S SET = GND
MAX63_9Z SET = GND
MAX63_9Y SET = GND
Reset Threshold (Note 2)
Reset Timeout Period
V
V
TH
MAX63_9W SET = GND
MAX63_9V SET = GND
✕
MAX63_9T/Z/W SET = divider, Figure 1 (Note 4)
MAX63_9S/Y/V SET = divider, Figure 1 (Note 4)
0.885
0.835
V
V
0.965
V
V
ADJ
ADJ
ADJ
✕
✕
0.915
ADJ
t
RP
100
200
300
ms
µs
V
to Reset Delay
t
35
OUT
RD
✕
V
0.2
V
OUT
IL
MR Input Voltage
MAX6349 only
V
✕
V
0.8
V
OUT
IH
MR Minimum Input Pulse
MR Glitch Rejection
MR to Reset Delay
MAX6349 only
MAX6349 only
MAX6349 only
MAX6349 only
1
µs
ns
ns
k
120
500
20
MR Pullup Resistance
10
50
0.3
0.4
V
V
> 1.0V, I
> 2.7V, I
= 50µA
OUT
OUT
SINK
SINK
Open-Drain RESET Output
Voltage
V
V
OL
= 3.2mA
Open-Drain Reset Output
Leakage Current
I
1.0
µA
LKG
V
V
V
V
V
1.0V, I
= 50µA
0.3
0.4
OUT
OUT
OUT
OUT
OUT
SINK
V
OL
Push-Pull RESET Output Voltage
< V (min), I
= 3.2mA
V
V
TH
SINK
✕
V
> V (max), I
= 500µA
0.8
V
V
OH
TH
SOURCE
OUT
OUT
V
> V (max), I = 3.2mA
SINK
0.4
OL
TH
Push-Pull RESET Output Voltage
✕
V
< V , I
= 150µA
0.8
OH
TH SOURCE
Note 1: Limits over temperature are guaranteed by design and not production tested.
Note 2: Specification from 0°C to less than 25°C is guaranteed to four sigma only.
Note 3: Dropout voltage is defined as V - V
when V
is 2% below the value of V
for V = V
+ 1V.
IN
OUT
OUT
OUT
IN
OUT
Note 4: V
= V
(1 + R1/R2), where V = 1.23V nominal.
ADJ
SET
SET
_______________________________________________________________________________________
3
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
GROUND PIN CURRENT
vs. INPUT VOLTAGE
MAXIMUM PULSE DURATION
vs. RESET THRESHOLD OVERDRIVE
11
10
9
250
40
35
200
150
100
50
I
= 150mA
OUT
30
25
20
15
10
5
8
7
RESET ASSERTS ABOVE
THIS LINE
I
= 0
OUT
6
5
4
3
2
1
0
0
0
0
1
2
3
4
5
6
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1
10
100
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
RESET THRESHOLD OVERDRIVE (V - V ) (mV)
TH OUT
DROPOUT VOLTAGE
vs. LOAD CURRENT
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
OUTPUT VOLTAGE vs. INPUT VOLTAGE
0
300
250
200
150
100
50
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-10
-20
-30
-40
-50
-60
V
= 3.3V
OUT
MAX63_9S/T
C
= 1 F
OUT
0
0
30
60
90
120
150
0.01
0.1
1
10
0
1
2
3
4
5
6
LOAD CURRENT (mA)
FREQUENCY (kHz)
INPUT VOLTAGE (V)
REGION OF STABLE C
ESR
OUT
OUTPUT NOISE
SHUTDOWN RESPONSE
vs. LOAD CURRENT
MAX6329/49 toc08
MAX6329/49 toc09
150
125
100
75
SHDN
5V/div
OUT
5V/div
V
OUT
10mV/div
C
= 4.7 F
OUT
RESET
5V/div
50
25
C
= 1 F
OUT
STABLE REGION
0
10ms/div
50ms/div
0
15 30 45 60 75 90 105 120 135 150
LOAD CURRENT (mA)
4
_______________________________________________________________________________________
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
STARTUP RESPONSE
LOAD TRANSIENT RESPONSE
MAX6329/49 toc11
MAX6329/49 toc10
V
IN
5V/div
V
OUT
50mV/div
V
OUT
2V/div
V
OUT
= 5V
IN
I
= 50mA
OUT
OUT
C
I
= 0 - 100mA
= 1 F
20 s/div
200 s/div
LOAD TRANSIENT RESPONSE
NEAR DROPOUT
LINE TRANSIENT
MAX6329/49 toc13
MAX6329/49 toc12
5V
V
IN
4.5V
V
OUT
50mV/div
V
OUT
50mV/div
V
I
= 3.6V
OUT
IN
= 0 - 50mA
I
= 0 - 100mA
OUT
500 s/div
200 s/div
_______________________________________________________________________________________
5
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
Pin Description
PIN
NAME
DEꢄCRIPTION
1
IN
Regulator Input. Supply voltage can range from +2.5V to +5.5V.
Ground. This pin also functions as a heatsink. Solder to large pads or the circuit board ground plane to
maximize thermal dissipation.
2
3
GND
(MAX6329 Onlc) Active-Low Shutdown Input. A logic low reduces the supply current to < 1µA. Connect
SHDN
(MAX6349 Onlc) Active-Low Manual Reset Input. A logic low forces a reset. Reset remains asserted for
the duration of the reset timeout period after MR transitions from low to high. Leave unconnected or
MR
connect to V
if not used. MR has an internal pullup resistor of 20k (typ) to OUT.
OUT
Active-Low Reset Output. RESET remains low while V
is below the reset threshold or while MR is
OUT
held low. RESET remains low for the duration of the reset timeout period after the reset conditions are
terminated.
RESET
RESET
4
Active-High Reset Output. RESET remains high while V
is below the reset threshold or while MR is
OUT
held low. RESET remains high for the duration of the reset timeout period after the reset conditions are
terminated.
Feedback Input for Setting the Output Voltage. Connect to GND to set the output voltage to the preset
fixed value (+3.3V, +2.5V, or +1.8V). Connect to an external resistor-divider network for adjustable
output operation.
5
6
SET
Regulator Output. Fixed (+3.3V, +2.5V, or +1.8V) or adjustable (+1.23V to +5.0V). Sources up to
150mA. Bypass with a 1µF minimum capacitor for full rated performance.
OUT
OUT is an internally regulated low dropout (LDO) linear
regulator that powers a microprocessor.
Detailed Description
The MAX6329/MAX6349 are low-dropout, low-quies-
cent current linear regulators with integrated micro-
processor reset circuits. The devices drive loads up to
150mA and are available with preset output voltages of
+3.3V, +2.5V, or +1.8V. The internal reset circuit moni-
tors the regulator output voltage and asserts the reset
output when the regulator output is below the micro-
processor supply tolerance.
Reset Circuit
The reset supervisor circuit is fully integrated in the
MAX6329/MAX6349 and uses the same reference volt-
age as the regulator. Two supply tolerance reset thresh-
olds, -5% and -10%, are provided for each type of
device:
2.5V TO 5.5V
Regulator
The regulator core operates with an input voltage range
of +2.5V to +5.5V. The output voltage is offered with
three fixed voltage options (+3.3V, +2.5V, and +1.8V) for
the MAX6329 and MAX6349. Enable the fixed voltage
output by connecting SET to ground. The
MAX6329/MAX6349 offer an adjustable output voltage
that is implemented with an external resistor-divider net-
work connected to OUT, SET, and GND (Figure 1). SET
must be connected to either GND or the external divider.
The MAX6329/MAX6349 automatically determine the
feedback path depending on the voltage seen at SET.
Featured characteristics include ultra-low quiescent cur-
rent and low dropout voltage. The Typical Operating
Circuit shows a typical connection for the MAX6329.
IN
OUT
MAX6329
MAX6349
R1
R2
SET
GND
Figure 1. Adjustable Output Voltage Configuration
_______________________________________________________________________________________
6
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
THERMAL SENSOR
OUT
IN
REVERSE
LEAKAGE
PROTECTION
ERROR
AMP
SHDN
MOS DRIVER WITH
CURRENT LIMIT
SET
1.23V
60mV
FEEDBACK MODE
COMPARATOR
200ms
RESET
DELAY
OUTPUT
STAGE
RESET/RESET
RESET
COMPARATOR
GND
MR
Figure 2. Functional Diagram
50 reset: Reset does not assert until the regulator out-
put voltage is at least -5% out of tolerance and always
asserts before the regulator output voltage is -10% out of
tolerance.
threshold and for at least 100ms (t ) after V
above the reset threshold. RESET or RESET also
asserts when MR is low (MAX6349).
rises
OUT
RP
Shutdown (MAX6329 only)
1ꢀ0 reset: Reset does not assert until the regulator
output voltage is at least -10% out of tolerance and
always asserts before the regulator output voltage is
-15% out of tolerance.
SHDN allows for the regulator to shutdown thereby
reducing the total I consumption of the device. The
IN
MAX6329 provides a digitally controlled active-low
shutdown function. In shutdown mode the pass transis-
tor, control circuit, reference, and all biases turn off,
reducing the supply current to below 1µA. Connect
SHDN to IN for normal operation.
Reset Output
A µP’s reset input starts the µP in a known state. The
MAX6329/MAX6349 µP supervisory circuits assert a
reset during power-up, power-down, and brownout
conditions. Reset is guaranteed to be logic high or low
depending on the device chosen (see Selector Guide).
Manual Reset Input (MAX6349 only)
Many µP-based products require manual reset capabil-
ity, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. For the MAX6349, a
RESET or RESET asserts when V
is below the reset
OUT
_______________________________________________________________________________________
7
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
cuit board, the temperature difference between the die
junction and the ambient air, and the rate of airflow.
The power dissipation across the device is:
logic low on MR asserts reset while the regulator is still
within tolerance.
Reset remains asserted while MR is low and for the
reset timeout period (100ms min) after MR returns high.
The MR input has an internal pullup of 20k (typ) to
OUT. This input can be driven with TTL/CMOS logic
levels or with open-drain/collector outputs. Connect a
normally open momentary switch from MR to GND to
create a manual reset function; external debounce cir-
cuitry is not required. If MR is driven from long cables
or the device is used in a noisy environment, connect a
0.1µF capacitor from MR to GND to provide additional
noise immunity.
P = I
(V - V
OUT IN
)
OUT
The maximum power dissipation is:
= (T - T ) / (
P
+
)
BA
MAX
J
A
JB
where T - T is the temperature difference between the
J
A
die junction and the surrounding air,
thermal resistance of the package, and
(or
BA
) is the
JC
is the ther-
JB
mal resistance through the printed circuit board, copper
traces, and other materials to the surrounding air.
The MAX6329/MAX6349s’ ground pin (GND) performs
the dual function of providing an electrical connection
to the system ground and channeling heat away.
Connect GND to the system ground using a large pad
or ground plane.
Reverse Leakage Protection
An internal circuit monitors the input and output volt-
ages. When the output voltage is greater than the input
voltage, the internal pass transistor and parasitic
diodes turn off. OUT powers the device. There is no
leakage path from OUT to IN. Therefore, the output can
be powered from an auxiliary supply such as a backup
battery without any need for additional blocking diodes.
Applications Information
Output Voltage Selection
The MAX6329/MAX6349 feature dual mode operation:
they operate in either a preset voltage mode or an
adjustable mode. In preset voltage mode, internal
feedback resistors set the MAX6329/MAX6349 to
+3.3V, +2.5V, or +1.8V (see Selector Guide). Select this
mode by connecting SET to ground. In adjustable
mode, select an output between 1.23V to 5.0V using
two external resistors connected as a voltage divider to
SET (Figure 1). The output voltage is set by the following
equation:
Current Limit
The MAX6329/MAX6349 include a current limiter that
monitors and controls the pass transistor’s gate voltage,
limiting the output current to 350mA (typ). The output can
be shorted to ground for an indefinite period without
damaging the part.
Thermal Overload Protection
When the junction temperature exceeds T = +160°C,
J
the thermal sensor signals the shutdown logic, turning
off the pass transistor and allowing the IC to cool. The
thermal sensor will turn the pass transistor on again
after the IC’s junction temperature cools by 20°C,
resulting in a pulsed output during continuous thermal-
overload conditions. Thermal overload protection is
designed to protect the MAX6329/MAX6349 in the
event of fault conditions. For continuous operation, do
not exceed the absolute maximum junction temperature
V
OUT
= V
(1 + R1/R2)
SET
where V
= 1.23V. To simplify resistor selection:
SET
R1 = R2 (V
/V
- 1)
OUT SET
Choose R2 100k to optimize power consumption,
accuracy, and high-frequency power-supply rejection.
Since the V
tolerance is typically less than 30mV,
SET
rating of T = +150°C.
J
the output can be set using fixed resistors instead of
variable resistors. In preset voltage mode, impedance
between SET and ground should be less than 50k .
Operating Region and Power Dissipation
The MAX6329/MAX6349s’ maximum power dissipation
depends on the thermal resistance of the case and cir-
8
_______________________________________________________________________________________
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
Operating Characteristics section shows a graph of the
Maximum Transient Duration vs. Reset Threshold
Overdrive for which reset is not asserted. The graph
was produced using negative going OUT transients
starting at OUT and ending below the reset threshold
by the magnitude indicated (Reset Threshold
Overdrive). The graph shows the maximum pulse width
that a negative going OUT transient can typically have
without triggering a reset pulse. As the amplitude of the
transient increases (i.e., goes further below the reset
threshold), the maximum allowable pulse width
decreases. Typically, an OUT transient that goes only
10mV below the reset threshold and lasts for 75µs will
not trigger a reset pulse.
Capacitor Selection and
Regulator Stability
For stable operation over the full temperature range
and with load currents up to 150mA, use a 1µF (min)
output capacitor. To reduce noise and improve load
transient response, stability, and power-supply rejec-
tion, use large output capacitor values such as 10µF.
Note that some ceramic dielectrics exhibit large capac-
itance and ESR variation with temperature. With
dielectrics such as Z5U and Y5V, it may be necessary
to use 2.2µF or more to ensure stability at temperatures
below -10°C. With X7R or X5R dielectrics, 1µF should
be sufficient at all operating temperatures. A graph of
the Region of Stable C
ESR vs. Load Current is
OUT
shown in the Typical Operating Characteristics.
To improve power-supply rejection and transient
response use a 1µF capacitor between IN and GND.
Input-Output (Dropout) Voltage
A regulator’s minimum input-output voltage differential
(or dropout voltage) determines the lowest useable
supply voltage. In battery powered systems, this will
determine the useful end-of-life battery voltage. Since
the MAX6329/MAX6349 use a P-channel MOSFET pass
Chip Information
TRANSISTOR COUNT: 800
PROCESS: BiCMOS
transistor, their dropout voltage is a function of R
DS(ON)
multiplied by the load current (see Electrical
Characteristics).
Negative Going OUT Transients
These supervisors are relatively immune to short-dura-
tion, negative going OUT transients. The Typical
Typical Operating Circuit
2.5V TO 5.5V
IN
OUT
V
CC
SHDN
SET
1 F
P
MAX6329
RESET
RESET
GND
GND
_______________________________________________________________________________________
9
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
Selector Guide
REGULATOR
OUTPUT VOLTAGE
V
REꢄET
OUT
REꢄET OUTPUT
TOLERANCE
PACKAGE
INFORMATION SHDN
OPEN-
DRAIN
(P)
RESET
PUꢄH-
PULL (L)
REꢄET
PUꢄH-PULL
(H)
-50 V -1ꢀ0 V
TH
TH
MR
3.3V
2.5V
1.8V
TOP
MARK
T/Z/W
ꢄ/Y/V
MAX6329TP
MAX6329TL
MAX6329TH
MAX6329SP
MAX6329ꢄL
MAX6329ꢄH
MAX6329ZP
MAX6329ZL
MAX6329ZH
MAX6329YP
MAX6329YL
MAX6329YH
MAX6329WP
MAX6329WL
MAX6329WH
MAX6329VP
MAX6329VL
MAX6329VH
MAX6349TP
MAX6349TL
MAX6349TH
MAX6349ꢄP
MAX6349SL
MAX6349SH
MAX6349ZP
MAX6349ZL
MAX6349ZH
MAX6349YP
MAX6349YL
MAX6349YH
MAX6349WP
MAX6349WL
MAX6349WH
MAX6349VP
MAX6349VL
MAX6349VH
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
AAIP
AAIO
AAIN
AAIM
AAIL
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
AAIK
AAJB
AAJA
AAIZ
AAIY
AAIX
AAIW
AAIV
AAIU
AAIT
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
AAIS
AAIR
AAIQ
AAJH
AAJG
AAJF
AAJE
AAJD
AAJC
AAJT
AAJS
AAJR
AAJQ
AAJP
AAJO
AAJN
AAJM
AAJL
AAJK
AAJJ
AAJI
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Bold items indicate standard versions. Samples are generally available on standard versions only. Contact factory for availability of
nonstandard versions.
1ꢀ ______________________________________________________________________________________
150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
Package Information
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 ____________________11
© 2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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