首页 |元器件品牌

MAX6340UK30/V+T [MAXIM]

Power Supply Support Circuit;
MAX6340UK30/V+T
型号： MAX6340UK30/V+T
厂家： MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述：

Power Supply Support Circuit
文件： 总9页 (文件大小：183K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
 查看货源
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
General Description  
Features  
The MAX6340/MAX6421–MAX6426 low-power micro-  
processor supervisor circuits monitor system voltages  
from 1.6V to 5V. These devices perform a single function:  
o Monitor System Voltages from 1.6V to 5V  
o Capacitor-Adjustable Reset Timeout Period  
o Low Quiescent Current (1.6µA typ)  
they assert a reset signal whenever the V  
supply volt-  
CC  
age falls below its reset threshold. The reset output  
remains asserted for the reset timeout period after V  
rises above the reset threshold. The reset timeout is exter-  
nally set by a capacitor to provide more flexibility.  
o Three RESET Output Options  
Push-Pull RESET  
CC  
Push-Pull RESET  
Open-Drain RESET  
The MAX6421/MAX6424 have an active-low, push-  
pull reset output. The MAX6422 has an active-high,  
push-pull reset output and the MAX6340/MAX6423/  
MAX6425/MAX6426 have an active-low, open-drain  
reset output. The MAX6421/MAX6422/MAX6423 are  
offered in 4-pin SC70 or SOT143 packages. The  
MAX6340/MAX6424/MAX6425/MAX6426 are available  
in 5-pin SOT23-5 packages.  
o Guaranteed Reset Valid to V  
= 1V  
CC  
o Immune to Short V  
Transients  
CC  
o Small 4-Pin SC70, 4-Pin SOT143, and 5-Pin SOT23  
Packages  
o MAX6340 Pin Compatible with LP3470  
o MAX6424/MAX6425 Pin Compatible with  
NCP300–NCP303, MC33464/MC33465,  
S807/S808/S809, and RN5VD  
o MAX6426 Pin Compatible with PST92XX  
Applications  
Ordering Information  
Portable Equipment  
Battery-Powered Computers/Controllers  
Automotive  
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
5 SOT23-5  
5 SOT23-5  
4 SC70-4  
MAX6340UK_ _-T  
MAX6340UK_ _/V+T  
MAX6421XS_ _-T  
MAX6421US_ _-T  
MAX6422XS_ _-T  
MAX6422US_ _-T  
MAX6423XS_ _-T  
MAX6423US_ _-T  
MAX6424UK_ _-T  
MAX6425UK_ _-T  
MAX6426UK_ _-T  
Medical Equipment  
Intelligent Instruments  
Embedded Controllers  
Critical µP Monitoring  
Set-Top Boxes  
4 SOT143-4  
4 SC70-4  
4 SOT143-4  
4 SC70-4  
4 SOT143-4  
5 SOT23-5  
5 SOT23-5  
5 SOT23-5  
Computers  
Typical Operating Circuit appears at end of data sheet.  
Note: The MAX6340/MAX6421–MAX6426 are available with  
factory-trimmed reset thresholds from 1.575V to 5.0V in approxi-  
mately 0.1V increments. Insert the desired nominal reset thresh-  
old suffix (from Table 1) into the blanks. There are 50 standard  
versions with a required order increment of 2500 pieces. Sample  
stock is generally held on standard versions only (see Standard  
Versions Table). Required order increment is 10,000 pieces for  
nonstandard versions. Contact factory for availability. All devices  
are available in tape-and-reel only.  
Pin Configurations  
TOP VIEW  
+
V
CC  
1
2
4
3
RESET  
(RESET)  
MAX6421X  
MAX6422X  
MAX6423X  
SRT  
GND  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing "-T" with "+T" when ordering.  
SC70  
/V denotes an automotive qualified part.  
( ) ARE FOR THE MAX6422  
Typical Operating Circuit appears at end of data sheet.  
Selector Guide appears at end of data sheet.  
Pin Configurations continued at end of data sheet.  
For pricing, delivery, and ordering information, please contact Maxim Direct  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
19-2440; Rev 5; 12/13  
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
ABSOLUTE MAXIMUM RATINGS  
All Voltages Referenced to GND  
Continuous Power Dissipation (T = +70°C)  
A
V
........................................................................-0.3V to +6.0V  
4-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW  
4-Pin SOT143 (derate 4mW/°C above +70°C).............320mW  
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW  
Operating Temperature Range .........................-40°C to +125°C  
Storage Temperature Range.............................-65°C to +150°C  
Junction Temperature......................................................+150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
CC  
SRT, RESET, RESET (push-pull).................-0.3V to (V  
+ 0.3V)  
CC  
RESET (open drain)...............................................-0.3V to +6.0V  
Input Current (all pins)...................................................... 20mA  
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  
= 1V to 5.5V, T = T  
A
to T  
, unless otherwise specified. Typical values are at V  
= 5V and T = +25°C.) (Note 1)  
CC A  
CC  
MIN  
MAX  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
5.5  
UNITS  
Supply Voltage Range  
V
1.0  
V
CC  
V
V
V
≤ 5.0V  
≤ 3.3V  
≤ 2.0V  
2.5  
1.9  
1.6  
4.2  
CC  
CC  
CC  
Supply Current  
I
3.4  
µA  
CC  
2.5  
T
= +25°C  
V
V
- 1.5%  
V
+ 1.5%  
+ 2.5%  
A
A
TH  
TH  
TH  
TH  
V
Reset Threshold Accuracy  
V
TH  
V
CC  
T
= -40°C to +125°C  
- 2.5%  
4 x V  
V
Hysteresis  
to Reset Delay  
V
mV  
µs  
HYST  
TH  
V
t
V
falling at 1mV/µs  
80  
CC  
RD  
CC  
C
C
= 1500pF  
= 0  
3.00  
4.375  
0.275  
240  
5.75  
SRT  
SRT  
SRT  
Reset Timeout Period  
t
ms  
RP  
V
V
Ramp Current  
I
V
V
V
V
V
V
V
V
V
= 0 to 0.65V; V = 1.6V to 5V  
nA  
V
SRT  
SRT  
RAMP  
CC  
Ramp Threshold  
V
= 1.6V to 5V (V rising)  
RAMP  
0.65  
33  
TH-RAMP  
CC  
RAMP Threshold Hysteresis  
falling threshold  
mV  
RAMP  
≥ 1.0V, I  
= 50µA  
0.3  
0.3  
0.4  
CC  
CC  
CC  
CC  
CC  
CC  
SINK  
SINK  
SINK  
RESET Output Voltage Low  
V
V
≥ 2.7V, I  
≥ 4.5V, I  
≥ 1.8V, I  
= 1.2mA  
= 3.2mA  
V
OL  
= 200µA  
= 500µA  
0.8 x V  
0.8 x V  
0.8 x V  
SOURCE  
CC  
CC  
CC  
RESET Output Voltage High,  
Push-Pull  
V
≥ 2.25V, I  
OH  
SOURCE  
≥ 4.5V, I  
= 800µA  
SOURCE  
RESET Output Leakage Current,  
Open-Drain  
I
V
> V , reset not asserted  
1.0  
µA  
LKG  
CC  
TH  
V
V
V
V
V
V
V
≥ 1.0V, I  
≥ 1.8V, I  
≥ 2.7V, I  
≥ 4.5V, I  
≥ 1.8V, I  
≥ 2.7V, I  
≥ 4.5V, I  
= 1µA  
0.8 x V  
0.8 x V  
0.8 x V  
0.8 x V  
CC  
CC  
CC  
CC  
CC  
CC  
CC  
SOURCE  
SOURCE  
SOURCE  
SOURCE  
CC  
CC  
CC  
CC  
= 150µA  
= 500µA  
= 800µA  
RESET Output Voltage High  
RESET Output Voltage Low  
V
V
V
OH  
= 500µA  
0.3  
0.3  
0.4  
SINK  
SINK  
SINK  
V
= 1.2mA  
= 3.2mA  
OL  
Note 1: Devices production tested at +25°C. Overtemperature limits are guaranteed by design.  
2
Maxim Integrated  
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Typical Operating Characteristics  
(V  
= 5V, C  
= 1500pF, T = +25°C, unless otherwise noted.)  
SRT A  
CC  
SUPPLY CURRENT  
vs. SUPPLY VOLTAGE  
RESET TIMEOUT PERIOD  
vs. TEMPERATURE  
RESET TIMEOUT PERIOD vs. C  
SRT  
4.30  
4.25  
4.20  
4.15  
4.10  
4.0  
10,000  
1000  
100  
10  
C
= 1500pF  
SRT  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
T
= +125°C  
A
T
= +25°C  
A
T
= -40°C  
A
1
0.1  
0
1
2
3
4
5
6
-50 -25  
0
25  
50  
75 100 125  
1000  
100  
0.001 0.01  
0.1  
1
10  
SUPPLY VOLTAGE (V)  
TEMPERATURE (°C)  
C
(nF)  
SRT  
RESET TIMEOUT PERIOD  
vs. TEMPERATURE  
MAXIMUM TRANSIENT DURATION  
vs. RESET THRESHOLD OVERDRIVE  
V
TO RESET DELAY  
CC  
vs. TEMPERATURE (V FALLING)  
CC  
600  
550  
500  
450  
400  
175  
150  
125  
100  
75  
160  
150  
140  
130  
120  
V
FALLING AT 1mVμs  
CC  
C
= 0  
SRT  
RESET OCCURS  
ABOVE THE CURVE  
350  
300  
110  
100  
50  
25  
250  
200  
90  
80  
V
= 2.95V  
800  
TH  
0
-50 -25  
0
25  
50  
75 100 125  
0
200  
400  
600  
1000  
-50 -25  
0
25  
75 100 125  
50  
TEMPERATURE (°C)  
RESET THRESHOLD OVERDRIVE (mV)  
TEMPERATURE (°C)  
POWER-UP/POWER-DOWN  
CHARACTERISTIC  
NORMALIZED RESET THRESHOLD  
vs. TEMPERATURE  
1.006  
V
= 1.6V  
TH  
V
CC  
1.004  
1.002  
1.000  
0.998  
0.996  
0.994  
1V/div  
1V/div  
RESET  
400μs/div  
-50 -25  
0
25  
50  
75 100 125  
TEMPERATURE (°C)  
Maxim Integrated  
3
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Pin Description  
PIN  
MAX6421  
MAX6422  
MAX6423  
MAX6424  
MAX6425  
MAX6340  
SOT23  
MAX6426 NAME  
SOT23  
FUNCTION  
SOT143  
SC70  
SOT23  
Set Reset Timeout Input. Connect a capacitor between SRT  
and ground to set the timeout period. Determine the period as  
1
3
3
5
1
SRT  
follows: t = 2.73 ✕ 106 ✕ C  
+ 275µs with t in seconds  
RP  
RP  
SRT  
and C  
in farads.  
SRT  
2
3
4
1
—
2
2
—
1
3
4
2
2, 3  
—
5
GND  
N.C.  
Ground  
Not Internally Connected. Can be connected to GND.  
Supply Voltage and Reset Threshold Monitor Input  
V
CC  
RESET changes from high to low whenever V  
drops below  
CC  
the selected reset threshold voltage. RESET remains low for  
5
1
4
RESET  
the reset timeout period after V  
threshold.  
exceeds the reset  
CC  
4
4
RESET changes from low to high whenever V  
drops below  
CC  
the selected reset threshold voltage. RESET remains high for  
—
—
—
RESET  
the reset timeout period after V  
threshold.  
exceeds the reset  
CC  
Detailed Description  
Reset Output  
3.3V  
The reset output is typically connected to the reset input  
of a µP. A µP’s reset input starts or restarts the µP in a  
known state. The MAX6340/MAX6421–MAX6426 µP  
supervisory circuits provide the reset logic to prevent  
code-execution errors during power-up, power-down,  
and brownout conditions (see Typical Operating  
Characteristics).  
V
CC  
LASER-TRIMMED  
RESISTORS  
5.0V  
RESET changes from high to low whenever V  
drops  
CC  
10kΩ  
V
REF  
RESET  
N
below the threshold voltage. Once V  
exceeds the  
CC  
5V  
SYSTEM  
threshold voltage, RESET remains low for the capacitor-  
adjustable reset timeout period.  
RESET  
TIMEOUT  
SRT  
The MAX6422 active-high RESET output is the inverse  
C
SRT  
logic of the active-low RESET output. All device outputs  
MAX6340  
MAX6423  
MAX6425  
MAX6426  
are guaranteed valid for V  
> 1V.  
CC  
GND  
The MAX6340/MAX6423/MAX6425/MAX6426 are open-  
drain RESET outputs. Connect an external pullup resis-  
tor to any supply from 0 to 5.5V. Select a resistor value  
large enough to register a logic low when RESET is  
asserted and small enough to register a logic high  
while supplying all input current and leakage paths  
connected to the RESET line. A 10kΩ to 100kΩ pullup  
is sufficient in most applications.  
Figure 1. MAX6340/MAX6423/MAX6425/MAX6426 Open-Drain  
RESET Output Allows Use with Multiple Supplies  
4
Maxim Integrated  
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Selecting a Reset Capacitor  
Applications Information  
Interfacing to Other Voltages for Logic  
Compatibility  
The reset timeout period is adjustable to accommodate  
a variety of µP applications. Adjust the reset timeout  
period (t ) by connecting a capacitor (C ) between  
RP  
SRT  
The open-drain outputs of the MAX6340/MAX6423/  
MAX6425/MAX6426 can be used to interface to µPs with  
other logic levels. As shown in Figure 1, the open-drain  
output can be connected to voltages from 0 to 5.5V. This  
allows for easy logic compatibility to various µPs.  
SRT and ground. Calculate the reset timeout capacitor  
as follows:  
C
SRT  
= (t - 275µs) / (2.73 ꢀ 106)  
RP  
where t is in seconds and C  
is in farads.  
RP  
SRT  
The reset delay time is set by a current/capacitor-con-  
trolled ramp compared to an internal 0.65V reference.  
An internal 240nA ramp current source charges the  
external capacitor. The charge to the capacitor is  
cleared when a reset condition is detected. Once the  
reset condition is removed, the voltage on the capacitor  
Wired-OR Reset  
To allow auxiliary circuitry to hold the system in reset,  
an external open-drain logic signal can be connected  
to the open-drain RESET of the MAX6340/MAX6423/  
MAX6425/MAX6426, as shown in Figure 2. This config-  
uration can reset the µP, but does not provide the reset  
timeout when the external logic signal is released.  
ramps according to the formula: dV/dt = I/C. The C  
SRT  
capacitor must ramp to 0.65V to deassert the reset.  
must be a low-leakage (<10nA) type capacitor;  
C
SRT  
Negative-Going V  
CC  
Transients  
ceramic is recommended.  
In addition to issuing a reset to the µP during power-up,  
power-down, and brownout conditions, these supervisors  
are relatively immune to short-duration negative-going  
transients (glitches). The graph Maximum Transient  
Duration vs. Reset Threshold Overdrive in the Typical  
Operating Characteristics shows this relationship.  
Operating as a Voltage Detector  
The MAX6340/MAX6421–MAX6426 can be operated in a  
voltage detector mode by floating the SRT pin. The reset  
delay times for V  
rising above or falling below the  
CC  
threshold are not significantly different. The reset output is  
deasserted smoothly without false pulses.  
The area below the curve of the graph is the region in  
which these devices typically do not generate a reset  
pulse. This graph was generated using a negative-  
V
CC  
going pulse applied to V , starting above the actual  
CC  
reset threshold (V ) and ending below it by the magni-  
TH  
tude indicated (reset-threshold overdrive). As the mag-  
nitude of the transient decreases (farther below the  
reset threshold), the maximum allowable pulse width  
V
DD  
10kΩ  
MAX6340  
MAX6423  
MAX6425  
MAX6426  
decreases. Typically, a V  
transient that goes 100mV  
CC  
below the reset threshold and lasts 50µs or less does  
not cause a reset pulse to be issued.  
μP  
Ensuring a Valid RESET or RESET  
RESET  
RESET  
Down to V  
CC  
= 0  
When V  
falls below 1V, RESET/RESET current-sink-  
CC  
N
ing (sourcing) capabilities decline drastically. In the  
case of the MAX6421/MAX6424, high-impedance  
CMOS-logic inputs connected to RESET can drift to  
undetermined voltages. This presents no problems in  
most applications, since most µPs and other circuitry  
GND  
do not operate with V  
below 1V.  
CC  
OPEN-DRAIN  
LOGIC  
In those applications where RESET must be valid down  
to zero, adding a pulldown resistor between RESET  
and ground sinks any stray leakage currents, holding  
RESET low (Figure 3). The value of the pulldown resis-  
tor is not critical; 100kΩ is large enough not to load  
RESET and small enough to pull RESET to ground. For  
applications using the MAX6422, a 100kΩ pullup resis-  
N
Figure 2. Wired-OR Reset Circuit  
Maxim Integrated  
5
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Table 1. Reset Threshold Voltage Suffix  
V
CC  
SUFFIX  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
MIN  
TYP  
MAX  
1.614  
1.707  
1.845  
1.948  
2.050  
2.153  
2.243  
2.371  
2.460  
2.563  
2.691  
2.768  
2.870  
2.998  
3.075  
3.152  
3.280  
3.383  
3.485  
3.558  
3.690  
3.793  
3.895  
3.998  
4.100  
4.203  
4.305  
4.408  
4.484  
4.613  
4.741  
4.818  
4.920  
5.023  
5.125  
1.536  
1.623  
1.755  
1.853  
1.950  
2.048  
2.133  
2.313  
2.340  
2.438  
2.559  
2.633  
2.730  
2.852  
2.925  
2.998  
3.120  
3.218  
3.315  
3.413  
3.510  
3.608  
3.705  
3.803  
3.900  
3.998  
4.095  
4.193  
4.266  
4.388  
4.509  
4.583  
4.680  
4.778  
4.875  
1.575  
1.665  
1.800  
1.900  
2.000  
2.100  
2.188  
2.313  
2.400  
2.500  
2.625  
2.700  
2.800  
2.925  
3.000  
3.075  
3.200  
3.300  
3.400  
3.500  
3.600  
3.700  
3.800  
3.900  
4.000  
4.100  
4.200  
4.300  
4.375  
4.500  
4.625  
4.700  
4.800  
4.900  
5.000  
V
CC  
MAX6421  
MAX6424  
RESET  
100kΩ  
GND  
Figure 3. Ensuring RESET Valid to V  
= 0  
CC  
V
CC  
100kΩ  
V
CC  
MAX6422  
RESET  
GND  
Figure 4. Ensuring RESET Valid to V  
= 0  
CC  
tor between RESET and V  
holds RESET high when  
falls below 1V (Figure 4). Open-drain RESET ver-  
sions are not recommended for applications requiring  
valid logic for V down to zero.  
CC  
V
CC  
CC  
Layout Consideration  
SRT is a precise current source. When developing the  
layout for the application, be careful to minimize board  
capacitance and leakage currents around this pin.  
Traces connected to SRT should be kept as short as  
possible. Traces carrying high-speed digital signals  
and traces with large voltage potentials should be rout-  
ed as far from SRT as possible. Leakage current and  
stray capacitance (e.g., a scope probe) at this pin  
could cause errors in the reset timeout period. When  
evaluating these parts, use clean prototype boards to  
ensure accurate reset periods.  
6
Maxim Integrated  
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Standard Versions Table  
PART*  
OUTPUT STAGE  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Push-Pull RESET  
TOP MARK  
KADC  
ACW  
PART*  
OUTPUT STAGE  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain 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  
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  
Push-Pull RESET  
TOP MARK  
AEBE  
AEBG  
AEBI  
MAX6340UK16-T  
MAX6340UK22-T  
MAX6340UK26-T  
MAX6340UK29-T  
MAX6340UK46-T  
MAX6421US16-T  
MAX6421XS16-T  
MAX6421US22-T  
MAX6421XS22-T  
MAX6421US26-T  
MAX6421XS26-T  
MAX6421US29-T  
MAX6421XS29-T  
MAX6421US46-T  
MAX6421XS46-T  
MAX6422US16-T  
MAX6422XS16-T  
MAX6422US22-T  
MAX6422XS22-T  
MAX6422US26-T  
MAX6422XS26-T  
MAX6422US29-T  
MAX6422XS29-T  
MAX6422US46-T  
MAX6422XS46-T  
MAX6423US16-T  
MAX6423XS16-T  
MAX6423US22-T  
MAX6423XS22-T  
MAX6423US26-T  
MAX6423XS26-T  
MAX6423US29-T  
MAX6423XS29-T  
MAX6423US46-T  
MAX6423XS46-T  
MAX6424UK16-T  
MAX6424UK22-T  
MAX6424UK26-T  
MAX6424UK29-T  
MAX6424UK46-T  
MAX6425UK16-T  
MAX6425UK22-T  
MAX6425UK26-T  
MAX6425UK29-T  
MAX6425UK46-T  
MAX6426UK16-T  
MAX6426UK22-T  
MAX6426UK26-T  
MAX6426UK29-T  
MAX6426UK46-T  
KADU  
ADO  
AEBJ  
AEBM  
KADA  
ACU  
KADW  
ADQ  
KADX  
ADR  
KADE  
ACY  
KAEA  
ADU  
KADG  
ADA  
ADUF  
ADUK  
ADUM  
ADUN  
ADUQ  
ADUG  
ADUS  
ADUU  
ADUV  
ADUY  
ADUH  
ADVA  
ADVC  
ADVD  
ADVG  
KADH  
ADB  
Push-Pull RESET  
Push-Pull RESET  
Push-Pull RESET  
KADK  
ADE  
Push-Pull RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
Open-Drain RESET  
KADB  
ACV  
KADM  
ADG  
KADO  
ADI  
KADP  
ADJ  
KADS  
ADM  
*Sample stock is generally held on all standard versions. Contact  
factory for availability of nonstandard versions.  
Typical Operating Circuit  
V
CC  
V
CC  
LASER-TRIMMED  
RESISTORS  
μP  
V
REF  
RESET  
RESET  
RESET  
TIMEOUT  
SRT  
C
SRT  
MAX6421  
MAX6424  
GND  
Maxim Integrated  
7
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Pin Configurations (continued)  
TOP VIEW  
+
+
SRT  
1
2
3
5
4
RESET  
RESET  
1
2
3
5
4
SRT  
N.C.  
MAX6340  
MAX6424  
MAX6425  
GND  
N.C.  
V
CC  
V
CC  
GND  
SOT23  
SOT23  
+
+
SRT  
1
2
3
5
4
V
GND  
1
2
4
3
RESET  
(RESET)  
CC  
MAX6421U  
MAX6422U  
MAX6423U  
MAX6426  
GND  
GND  
V
SRT  
CC  
RESET  
SOT143  
SOT23  
Selector Guide  
PART  
PUSH-PULL RESET  
PUSH-PULL RESET  
OPEN-DRAIN RESET  
PIN-PACKAGE  
5 SOT23  
MAX6340  
MAX6421  
MAX6422  
MAX6423  
MAX6424  
MAX6425  
—
✔
—
—
✔
✔
—
—
✔
4 SOT143/SC70  
4 SOT143/SC70  
4 SOT143/SC70  
5 SOT23  
—
—
✔
—
—
—
—
✔
—
5 SOT23  
Package Information  
Chip Information  
For the latest package outline information and land patterns (foot-  
prints), 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.  
TRANSISTOR COUNT: 295  
PROCESS: BiCMOS  
LAND  
PATTERN NO.  
PACKAGE  
TYPE  
PACKAGE  
CODE  
OUTLINE NO.  
90-0187  
90-0183  
90-0174  
4 SC70  
X4+1  
U4+1  
U5+2  
21-0098  
21-0052  
21-0057  
4 SOT143  
5 SOT23  
8
Maxim Integrated  
MAX6340/  
MAX6421–MAX6426  
Low-Power, SC70/SOT µP Reset Circuits with  
Capacitor-Adjustable Reset Timeout Delay  
Revision History  
REVISION REVISION  
PAGES  
CHANGED  
DESCRIPTION  
NUMBER  
DATE  
5
12/13  
Added /V automotive OPN to Ordering Information  
1
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 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 _________________________________ 9  
© 2013 Maxim Integrated Products, Inc.  
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.  

相关型号：

SI9130DB

 5- and 3.3-V Step-Down Synchronous Converters

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135LG-T1

 SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135LG-T1-E3

 SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135_11

 SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9136_11

 Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130CG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130LG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130_11

 Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137

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

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137DB

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

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137LG

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

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9122E

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

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明