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MAX6803US46D3+T [MAXIM]

Power Supply Support Circuit, Fixed, 1 Channel, +4.63VV, BICMOS, PDSO4, LEAD FREE, TO-253, SOT-143, 4 PIN;
MAX6803US46D3+T
型号： MAX6803US46D3+T
厂家： MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述：

Power Supply Support Circuit, Fixed, 1 Channel, +4.63VV, BICMOS, PDSO4, LEAD FREE, TO-253, SOT-143, 4 PIN

输入元件 信息通信管理 光电二极管
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
General Description  
Features  
● Ultra-Low 0.7V Operating Supply Voltage  
The MAX6803/MAX6804/MAX6805 microprocessor (µP)  
supervisory circuits monitor the power supplies in 2.85V  
to 5.0V µP and digital systems. They increase cir-  
cuit reliability and reduce cost by eliminating external  
components and adjustments. They also feature a  
debounced manual-reset input.  
● Low 4.0µA Supply Current  
● Precision Monitoring of 2.85V to 5.0V Power-Supply  
Voltages  
● Reset Thresholds Available from 2.63V to 4.80V,  
in Approximately 100mV Increments  
These devices perform a single function: they assert a  
● Debounced Manual-Reset Input  
● Fully Specified over Temperature  
reset signal whenever the V  
below a preset threshold or whenever manual reset is  
asserted. Reset remains asserted for a preset timeout  
supply voltage declines  
CC  
● Three Power-On Reset Timeout Periods Available  
period after V  
has risen above the reset threshold or  
CC  
(1ms min, 20ms min, 100ms min)  
after manual reset is deasserted. The only difference  
among the three devices is their output. The MAX6804  
(push/pull) and MAX6805 (open-drain) have an active-  
low RESET output, while the MAX6803 (push/pull) has  
an active-high RESET output. The MAX6803/MAX6804  
● Low Cost  
● Three Available Output Structures: Push/Pull  
RESET, Push/Pull RESET, Open-Drain RESET  
● Guaranteed RESET/RESET Valid to VCC = 0.7V  
are guaranteed to be in the correct state for V  
down  
CC  
(MAX6803/MAX6804)  
to 0.7V. The MAX6805 is guaranteed to be in the correct  
state for V down to 1.0V.  
● Power-Supply Transient Immunity  
● No External Components Required  
● 4-Pin SOT143 Package  
CC  
The reset comparator in these ICs is designed to ignore  
fast transients on V . Reset thresholds are factory-  
CC  
trimmable between 2.63V and 4.80V, in approximately  
100mV increments. These devices are available with a  
1ms min, 20ms min, or 100ms min reset timeout period.  
Ideal for space-critical applications, the MAX6803/  
MAX6804/MAX6805 come packaged in a 4-pin SOT143.  
For a lower threshold voltage version, see the MAX6335/  
MAX6336/MAX6337.  
● Pin Compatible with MAX811/MAX812 and  
MAX6314/MAX6315(  
Ordering Information  
PART*  
TEMPRANGE  
PIN-PACKAGE  
4 SOT143  
MAX6803US__D_-T -40°C to +125°C  
MAX6804US__D_-T -40°C to +125°C  
MAX6805US_ _D_-T -40°C to +125°C  
*These devices are available in factory-set V  
4 SOT143  
Applications  
● Computers  
4 SOT143  
reset thresh-  
CC  
olds from 2.63V to 4.80V, in approximately 0.1V increments.  
Choose the desired reset threshold suffix from Table 1 and  
insert it in the blanks following “US” in the part number.  
Factory-programmed reset timeout periods are also available.  
Insert the number corresponding to the desired nominal reset  
timeout period (1 = 1ms min, 2 = 20ms min, 3 = 100ms min) in  
the blank following “D” in the part number. There are 15 stan-  
dard versions with a required order increment of 2500 pieces.  
Sample stock is generally held on the standard versions only  
(see Selector Guide). Contact the factory for availability of non-  
standard versions (required order increment is 10,000 pieces).  
All devices available in tape-and-reel only.  
● Controllers  
● Intelligent Instruments  
● Critical µP/µC Power Monitoring  
● Portable/Battery-Powered Equipment  
Typical Operating Circuit and Pin Configuration appear  
at end of data sheet.  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing “-T” with “+T” when ordering.  
Selector Guide appears at end of data sheet.  
19-1946; Rev 3; 7/14  
MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
Absolute Maximum Ratings  
Terminal Voltage (with respect to GND)  
Continuous Power Dissipation (T = +70°C)  
A
V
......................................................................-0.3V to +6V  
4-Pin SOT143 (derate 4mW/°C above +70°C) ...........320mW  
Operating Temperature Range......................... -40°C to +125°C  
Junction Temperature......................................................+150°C  
Storage Temperature Range............................ -65°C to +150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
CC  
Push/Pull RESET or RESET, MR ........ -0.3V to (V  
+ 0.3V)  
CC  
Open-Drain RESET.............................................-0.3V to +6V  
Input Current (V )............................................................20mA  
CC  
Output Current (RESET, RESET) ......................................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 Characteristics  
(V  
= full range, T = -40°C to +125°C, unless otherwise noted. Typical values are at V  
= +5.0V and T = +25°C, reset not  
CC A  
CC  
A
asserted.) (Note 1)  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
0.7  
TYP  
MAX  
5.5  
5.5  
5.5  
5.5  
10  
UNITS  
MAX6803/MAX6804  
T
T
= 0°C to +125°C  
A
A
MAX6805  
1.0  
Supply Voltage Range  
(Note 1)  
V
V
CC  
MAX6803/MAX6804  
MAX6805  
0.78  
1.2  
= -40°C to +125°C  
V
V
= +3.0V  
= +5.0V  
4
5
CC  
CC  
Supply Current  
I
No load  
µA  
V
CC  
12  
V
V
TH  
+ 1.8%  
TH  
T
= +25°C  
V
V
A
TH  
TH  
- 1.8%  
MAX680_US_ _D_-T,  
Table 1  
Reset Threshold  
V
TH  
V
V
TH  
+ 3%  
TH  
T = -40°C to +125°C  
A
- 3%  
V
Falling Reset Delay  
V
falling at 10V/ms  
CC  
30  
µs  
CC  
MAX680_US_ _D1-T  
MAX680_US_ _D2-T  
MAX680_US_ _D3-T  
1
20  
100  
1
1.5  
30  
2
Reset Active Timeout Period  
t
40  
ms  
RP  
150  
200  
MR Minimum Pulse Width  
MR Glitch Immunity  
MR Reset Delay  
µs  
ns  
µs  
50  
0.1  
×
V
CC  
V
0.3  
IL  
MR Input Voltage  
V
×
V
0.7  
V
IH  
CC  
MR Pullup Resistance  
12  
20  
30  
0.4  
0.3  
0.4  
kW  
I
I
I
= 50µA, V  
≥ 1.0V  
SINK  
SINK  
SINK  
CC  
RESET Output Low Voltage  
Reset  
V
= 1.2mA, V  
= 3.2mA, V  
≥ 2.5V  
V
V
OL  
CC  
(MAX6804/MAX6805)  
asserted  
≥ 4.25V  
CC  
×
×
I
= 500µA, V ≥ 3.0V 0.8  
V
V
SOURCE  
CC  
CC  
RESET Output High Voltage  
Reset not  
asserted  
V
OH  
(MAX6804)  
I
= 800µA, V ≥ 5.0V 0.8  
CC  
SOURCE  
CC  
Maxim Integrated  
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
Electrical Characteristics (continued)  
(V  
= full range, T = -40°C to +125°C, unless otherwise noted. Typical values are at V  
= +5.0V and T = +25°C, reset not  
CC A  
CC  
A
asserted.) (Note 1)  
PARAMETER  
SYMBOL  
CONDITIONS  
= 1µA, V ≥ 1.0V  
MIN  
TYP  
MAX  
UNITS  
×
V
CC  
I
0.8  
SOURCE  
CC  
Reset  
asserted  
×
V
I
= 200µA, V ≥ 1.8V 0.8  
V
V
OH  
SOURCE  
CC  
CC  
CC  
RESET Output Voltage  
(MAX6803)  
×
= 800µA, V ≥ 4.25V 0.8  
CC  
I
V
SOURCE  
I
= 1.2mA, V ≥ 3.0V  
0.3  
0.4  
SINK  
CC  
Reset not  
asserted  
V
V
OL  
I
= 3.2mA, V ≥ 5.0V  
CC  
SINK  
RESET Output Leakage Current  
V
> V , RESET not asserted  
0.5  
µA  
CC  
TH  
(MAX6805)  
Note 1: All parts are production tested at T = +25°C. Over temperature limits are guaranteed by design and not production tested.  
A
Note 2: I  
for the MAX6803 is 100nA; I  
for the MAX6804 is 100nA; I  
for the MAX6805 is 50µA.  
SOURCE  
SINK  
SINK  
Typical Operating Characteristics  
(Reset not asserted, T = +25°C, unless otherwise noted.)  
A
SUPPLY CURRENT  
vs. TEMPERATURE  
OUTPUT-VOLTAGE LOW  
vs. SUPPLY VOLTAGE  
NORMALIZED RESET TIMEOUT PERIOD  
vs. TEMPERATURE  
80  
60  
40  
20  
0
6.5  
6.0  
5.5  
5.0  
4.5  
4.0  
3.5  
3.0  
1.050  
1.040  
1.030  
1.020  
1.010  
1.000  
0.990  
0.980  
0.970  
0.960  
0.950  
V
= 2.93V  
= 500µA  
TH  
I
SINK  
RESET  
+125°C  
V
= +5.0V  
CC  
+85°C  
+25°C  
-40°C  
V
CC  
= +3.3V  
1.0  
1.5  
2.0  
(V)  
2.5  
3.0  
-50 -25  
0
25  
50  
75 100 125  
-50 -25  
0
25  
50  
75 100 125  
V
TEMPERATURE (°C)  
TEMPERATURE (°C)  
CC  
OUTPUT-VOLTAGE HIGH  
vs. SUPPLY VOLTAGE  
MAXIMUM TRANSIENT DURATION  
vs. RESET COMPARATOR OVERDRIVE  
V
CC  
FALLING PROPAGATION DELAY  
vs. TEMPERATURE  
600  
500  
400  
300  
200  
100  
0
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
100  
75  
50  
25  
0
V
= 2.93V  
= 100µA  
TH  
I
SINK  
RESET ASSERTED  
(MAX6803)  
V
= FALLING AT 1V/ms  
CC  
+125°C  
+85°C  
RESET OCCURS  
+25°C  
2.5  
RESET DOES  
NOT OCCUR  
V
CC  
= FALLING AT 10V/ms  
-40°C  
1.0  
3.0  
-50 -25  
0
25  
50  
75 100 125  
1.5  
2.0  
(V)  
0.1  
1
10  
100  
1000  
TEMPERATURE (°C)  
V
RESET COMPARATOR OVERDRIVE (mV)  
CC  
Maxim Integrated  
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
Pin Description  
PIN  
NAME  
FUNCTION  
MAX6804  
MAX6803  
MAX6805  
1
1
GND  
Ground  
Active-Low Reset Output. RESET is asserted while VCC is below the reset  
threshold, or while MR is asserted. RESET remains asserted for a reset  
timeout period (tRP) after VCC rises above the reset threshold or MR is  
deasserted. RESET on the MAX6804 is push/pull. RESET on the MAX6805  
isopen-drain.  
—
2
RESET  
Active-High Reset Output. RESET is asserted high while VCC is below the  
reset threshold or while MR is asserted, and RESET remains asserted for a  
reset timeout period (tRP) after VCC rises above the reset threshold or MR  
is deasserted. RESET on the MAX6803 is push/pull.  
2
—
RESET  
Manual-Reset Input. A logic low on MR asserts reset. Reset remains  
asserted as long as MR is low, and for the reset timeout period (tRP) after  
MR goes high. Leave unconnected or connect to VCC if not used.  
3
4
3
4
MR  
V
CC  
Supply Voltage Input  
shows the maximum pulse width that a negative-going  
Applications Information  
V
transient may typically have without issuing a reset  
CC  
Manual-Reset Input  
signal. As the amplitude of the transient increases, the  
maximum allowable pulse width decreases.  
Many µP-based products require manual-reset capability,  
allowing the operator, a test technician, or external logic  
circuitry to initiate a reset. A logic low on MR asserts reset.  
Reset remains asserted while MR is low, and for the reset  
active timeout period after MR returns high. MR has an  
internal 20kW pullup resistor, so it can be left unconnected  
if not used. Connect a normally open momentary switch  
from MR to GND to create a manual-reset function;  
external debounce circuitry is not required.  
Ensuring a Valid Reset Output Down to  
V
= 0  
CC  
When V  
falls below 1V and approaches the minimum  
CC  
operating voltage of 0.7V, push/pull-structured reset  
sinking (or sourcing) capabilities decrease drastically.  
High-impedance CMOS-logic inputs connected to the  
RESET pin can drift to indeterminate voltages. This  
does not present a problem in most cases, since most  
Interfacing to µPs with  
Bidirectional Reset Pins  
V
CC  
Since the RESET output on the MAX6805 is open-drain,  
this device interfaces easily with µPs that have bidirec-  
tional reset pins, such as the Motorola 68HC11.  
Connecting the µP supervisor’s RESET output directly  
to the microcontroller’s (µC’s) RESET pin with a  
single pullup resistor allows either device to assert reset  
(Figure 1).  
100kΩ  
V
V
CC  
CC  
µP  
MOTOROLA  
68HCXX  
MAX6805  
RESET  
MR  
RESET  
GND  
GND  
Negative-Going V  
Transients  
CC  
In addition to issuing a reset to the µP during power-up,  
power-down, and brownout conditions, these devices  
are relatively immune to short-duration, negative-going  
Figure 1. Interfacing to μPs with Bidirectional Reset Pins  
V
transients (glitches). The Typical Operating  
CC  
Characteristics show the Maximum Transient Duration  
vs. Reset Comparator Overdrive graph. The graph  
Maxim Integrated  
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
µPs and circuitry do not operate when V  
drops below  
Since the MAX6805 has an open-drain, active-low  
out-put, it typically uses a pullup resistor. With this device,  
RESET will most likely not maintain an active condi-  
tion, but will drift to a non-active level due to the pullup  
resistor and the reduced sinking capability of the open-  
drain device. Therefore, this device is not recommend-  
ed for applications where the RESET pin is required to  
CC  
1V. For the MAX6804 application where RESET must  
be valid down to 0, adding a pulldown resistor between  
RESET and GND removes stray leakage currents,  
holding RESET low (Figure 2a). The pulldown resistor  
value is not critical; 100kW is large enough not to load  
RESET, and small enough to pull it low. For the MAX6803,  
where RESET must be valid to V  
= 0, a 100kW pullup  
be valid down to V  
= 0.  
CC  
CC  
resistor between RESET and V  
will hold RESET high  
CC  
when V  
falls below 0.7V (Figure 2b).  
CC  
Pin Configuration  
V
CC  
TOP VIEW  
MAX6804  
MR  
RESET  
V
GND  
1
4
CC  
100kΩ  
GND  
(a)  
MAX6803  
MAX6804  
MAX6805  
V
CC  
RESET (RESET)  
2
3
MR  
100kΩ*  
MAX6803  
SOT143  
(
) ARE FOR MAX6803  
MR  
RESET  
GND  
(b)  
Typical Operating Circuit  
*ASSUMES HIGH-Z RESET INPUT TO THE µP  
Figure 2. Ensuring Reset Valid down to V  
= 0  
CC  
V
CC  
V
CC  
V
CC  
MAX6804  
µP  
RESET  
MR  
RESET  
GND  
GND  
PUSHBUTTON  
SWITCH  
Maxim Integrated  
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
Table 1. Factory-Trimmed Reset Thresholds  
RESET  
T
= +25°C  
T = -40°C to +125°C  
A
A
THRESHOLD  
SUFFIX  
MIN  
TYP (V  
)
MAX  
4.886  
4.785  
4.713  
4.581  
4.459  
4.377  
4.276  
4.174  
4.072  
3.970  
3.868  
3.767  
3.665  
3.563  
3.461  
3.359  
3.258  
3.135  
3.054  
2.983  
2.850  
2.749  
2.677  
MIN  
MAX  
4.944  
4.841  
4.769  
4.635  
4.511  
4.429  
4.326  
4.223  
4.120  
4.017  
3.914  
3.811  
3.708  
3.605  
3.502  
3.399  
3.296  
3.172  
3.090  
3.018  
2.884  
2.781  
2.709  
TH  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
4.714  
4.615  
4.547  
4.419  
4.301  
4.223  
4.124  
4.026  
3.928  
4.830  
3.732  
3.633  
3.535  
3.437  
3.339  
3.241  
3.142  
3.025  
2.946  
2.877  
2.750  
2.651  
2.583  
4.80  
4.70  
4.63  
4.50  
4.38  
4.30  
4.20  
4.10  
4.00  
3.90  
3.80  
3.70  
3.60  
3.50  
3.40  
3.30  
3.20  
3.08  
3.00  
2.93  
2.80  
2.70  
2.63  
4.656  
4.559  
4.491  
4.365  
4.249  
4.171  
4.074  
3.977  
3.880  
3.783  
3.686  
3.589  
3.492  
3.395  
3.298  
3.201  
3.104  
2.988  
2.910  
2.842  
2.716  
2.619  
2.551  
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
Selector Guide (Standard Versions*)  
SOT  
MIN RESET  
TIMEOUT (ms)  
PART  
OUTPUT STAGE  
NOMINAL V  
(V)  
TH  
TOP MARK  
MAX6803US26D3-T  
MAX6803US29D3-T  
MAX6803US31D3-T  
MAX6803US44D3-T  
MAX6803US46D3-T  
MAX6804US26D3-T  
MAX6804US29D3-T  
MAX6804US31D3-T  
MAX6804US44D3-T  
MAX6804US46D3-T  
MAX6805US26D3-T  
MAX6805US29D3-T  
MAX6805US31D3-T  
MAX6805US44D3-T  
MAX6805US46D3-T  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Push/Pull RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
2.63  
2.93  
3.08  
4.38  
4.63  
2.63  
2.93  
3.08  
4.38  
4.63  
2.63  
2.93  
3.08  
4.38  
4.63  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
KACH  
KACI  
KACJ  
KACK  
KACL  
KACN  
KACP  
KACQ  
KACR  
KACS  
KACO  
KACU  
KACV  
KACW  
KACX  
*Sample stock is generally held on all standard versions.  
Chip Information  
TRANSISTOR COUNT: 505  
PROCESS: BiCMOS  
Package Information  
For the latest package outline information and land patterns  
(footprints), go to www.maximintegrated.com/packages. Note  
that a “+”, “#”, or “-” in the package code indicates RoHS status  
only. Package drawings may show a different suffix character, but  
the drawing pertains to the package regardless of RoHS status.  
PACKAGE  
TYPE  
PACKAGE OUTLINE  
LAND  
PATTERN NO.  
CODE  
NO.  
4 SOT143  
U4-1  
21-0052  
90-0183  
Maxim Integrated  
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MAX6803/MAX6804/  
MAX6805  
4-Pin, Low-Power  
µP Reset Circuits with Manual Reset  
Revision History  
REVISION  
NUMBER  
REVISION  
DATE  
PAGES  
CHANGED  
DESCRIPTION  
No /V OPNs; removed Automotive reference from Applications section  
3
7/14  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.  
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses  
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)  
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.  
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.  
2014 Maxim Integrated Products, Inc.  
│ 8  

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SI9135LG-T1-E3

 SMBus Multi-Output Power-Supply Controller

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SI9135_11

 SMBus Multi-Output Power-Supply Controller

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SI9136_11

 Multi-Output Power-Supply Controller

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SI9130CG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

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SI9130LG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

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SI9130_11

 Pin-Programmable Dual Controller - Portable PCs

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SI9137

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9137DB

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9137LG

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9122E

 500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

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