ADM6306D331ARJZ1R7_技术文档

Multiple Input Programmable

Supervisory ICs

Data Sheet

ADM6305/ADM6306

FEATURES

FUNCTIONAL BLOCK DIAGRAMS

V

CC

Adjustable input threshold voltage options: 0.4 V and 1.23 V

Pre-trimmed V_CCthreshold options (ADM6306)

Increments between 2.5 V and 5 V

RST IN1

RST IN2

RESET

GENERATOR

RESET

Manual reset input (ADM6306)

0.4V/1.23V

4 factory programmed reset timeout delays

1 ms, 20 ms, 140 ms, and 1.12 sec (minimum)

Reset output stage: active low, open drain

Low power consumption: 5 µA typical

Power supply glitch immunity

ADM6305

GND

5-lead SOT-23 package

Temperature range: −40°C to +125°C

Figure 1.

V

CC

APPLICATIONS

Portable/battery-operated equipment

Microprocessor systems

Multivoltage applications

1.23V

RST IN

RESET

GENERATOR

RESET

0.4V/1.23V

V

CC

ADM6306

GLITCH

REJECTION

MR

GND

Figure 2.

GENERAL DESCRIPTION

1.23 V, while in the case of ADM6305DxARJZ1 model, it is

0.4 V. The V_CCinput of the ADM6305 is not a monitored input.

The ADM6305/ADM6306 are dual voltage supervisors

designed to monitor two supplies and provide a reset signal to

DSP- and microprocessor-based systems. Low supply current

and a small form factor make these devices suitable for portable

and battery-operated applications.

The ADM6306 has one adjustable undervoltage reset input,

RST IN, which features a choice of reset threshold, 0.4 V or

1.23 V (see the Ordering Guide for more information). The

ADM6306 incorporates a variety of internally pretrimmed V_CC

undervoltage threshold options for monitoring supply voltages

in increments between 2.5 V and 5 V. The ADM6306 also

includes a manual reset input.

If a monitored power supply voltage falls below the minimum

voltage threshold, a single active low output asserts triggering a

system reset. Once all voltages rise above the selected threshold

level, the reset signal remains low for the reset timeout period.

Four reset timeout options are available.

RESET

The ADM6305/ADM6306

as V_CCexceeds 0.9 V.

output remains valid as long

The ADM6305 monitors two supplies via two adjustable

resistor-programmable undervoltage reset inputs. Both RST

IN1 and RST IN2 have a reset threshold of either 0.4 V or

1.23 V depending on the particular model; that is, the RST IN1

and RST IN2 threshold of the ADM6305DxARJZ model is

The ADM6305/ADM6306 are available in a 5-lead SOT-23

package. These devices are specified over the temperature range

of −40°C to +125°C.

Rev. B

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ADM6305/ADM6306

Data Sheet

TABLE OF CONTENTS

Features .............................................................................................. 1

Pin Configurations and Function Descriptions............................5

Typical Performance Characteristics ..............................................6

Theory of Operation .........................................................................8

Input Configuration......................................................................8

Reset Output Configuration ........................................................8

Manual Reset..................................................................................8

Options ...............................................................................................9

Outline Dimensions....................................................................... 11

Ordering Guide .......................................................................... 11

Applications....................................................................................... 1

Functional Block Diagrams............................................................. 1

General Description......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 4

Thermal Resistance ...................................................................... 4

ESD Caution.................................................................................. 4

REVISION HISTORY

6/14—Rev. A to Rev. B

Changes to Figure 3 and Figure 4................................................... 5

4/12—Rev. 0 to Rev. A

Changes to Figure 1 and Figure 2................................................... 1

Change to V_CCPin Description, Table 5 ........................................ 5

Changes to Table 9.......................................................................... 10

Updated Outline Dimensions....................................................... 11

Changes to Ordering Guide .......................................................... 11

10/10—Revision 0: Initial Version

Rev. B | Page 2 of 12

Data Sheet

ADM6305/ADM6306

SPECIFICATIONS

V_CC= 2.5 V to 5 V for the ADM6305, V_CC= (V_TH+ 2.5%) to 5.5 V for the ADM6306. T_A= −40°C to +125°C, unless otherwise noted.

Typical values are at T_A= 25°C.

Table 1.

Parameter

Min

0.9

Typ

Max

Unit

Test Conditions/Comments

1

OPERATING VOLTAGE RANGE, V_CC

5.5

V

0.9

V

V_CCthat guarantees valid output

V_CC= 5.5 V, T_A= −40°C to +85°C

V_CC= 5.5 V, T_A= −40°C to +125°C

T_A= 25°C

T_A= −40°C to +85°C

T_A= −40°C to +125°C

INPUT CURRENT, I_CC

5

16

20

µA

V_CCTHRESHOLD VOLTAGE (ADM6306)²

V_TH− 1%

V_TH

V_TH+ 1%

V_TH+ 1.5%

V_TH+ 2.5%

V

V_TH− 1.5% V_TH

V_TH− 2.5% V_TH

25

RESET THRESHOLD TEMPERATURE COEFFICIENT

ppm/°C

mV

RESET THRESHOLD HYSTERESIS (V_HYST

)

2 × V_TH

RESET

TIMEOUT PERIOD (t_RP)

ADM630xD1

ADM630xD2

ADM630xD3

ADM630xD4

1.0

20

140

1120

1.4

28

200

1570

2.0

40

ms

V

280

2240

0.4

0.3

RESET

OUTPUT VOLTAGE (V_OL)

V_CC> 4.25 V, I_SINK= 3.2 mA

V

V_CC> 2.5 V, I_SINK= 1.2 mA

V_CC> 1.2 V, I_SINK= 500 μA

V_CC> 1 V, I_SINK= 50 μA

V_CC> 0.9 V, I_SINK= 25 μA

MR

V_IL

INPUT (ADM6306)

0.8

V

V_TH> 4.0 V

0.3 × V_CC

V

V_TH< 4.0 V

V_IH

2.4

V

V_TH> 4.0 V

0.7 × V_CC

V

V_TH< 4.0 V

MR

1

µs

ns

kΩ

T_A= 0°C to +70°C

T_A= −40°C to +125°C

Minimum Input Pulse Width

1.5

MR

0.1

Glitch Rejection

To Reset Delay

500

63.5

32

100

Pull-Up Resistance

1.23 V ADJUSTABLE RESET COMPARATOR INPUT

RST INx Input Threshold, V_RSTH

1.22

1.211

1.20

−25

1.23

1.24

1.249

1.26

+25

V

T_A= 25°C

T_A= −40°C to +85°C

T_A= −40°C to +125°C

0 V < V_{RST IN}< V_CC– 0.3 V³, T_A= −40°C to +85°C

V_{RST IN}= V_RSTH

V

RST INx Input Current, I_{RST INx}

nA

mV

+25

RST INx Hysteresis

2.5

0.4 V ADJUSTABLE RESET COMPARATOR INPUT

RST INx Input Threshold, V_RSTH

0.396

0.394

0.39

−25

0.40

0.404

0.406

0.41

+25

V

nA

T_A= 25°C

T_A= −40°C to +85°C

T_A= −40°C to +125°C

0 V < V_{RST INx}< V_CC– 0.3 V³, T_A= −40°C to +85°C

V_{RST IN}= V_RSTH

RST INx Input Current, I_{RST INx}

−25

+25

¹The ADM6305 switches from undervoltage reset to normal operation when 1.5 V > V_CC< 2.5 V.

²The AMD6306 monitors V_CCthrough an internal factory trimmed voltage divider, which programs the nominal reset threshold. Factory-trimmed reset thresholds are

available in approximately 100 mV increments from 2.5 V to 5 V.

³Guaranteed by design.

Rev. B | Page 3 of 12

ADM6305/ADM6306

Data Sheet

ABSOLUTE MAXIMUM RATINGS

THERMAL RESISTANCE

Table 2.

Parameter

Rating

Table 3.

Package Type

V_CC

−0.3 V to +6 V

−0.3 V to (V_CC+ 0.3 V)

20 mA

θ_JA

Unit

All Pins (Except V_CC)

Input/Output Current

Rate of Rise, V_CC

5-Lead SOT-23

240

°C/W

100 V/µs

Storage Temperature Range

Operating Temperature Range

Lead Temperature (10 sec)

Junction Temperature

−65°C to +160°C

−40°C to +125°C

300°C

ESD CAUTION

150°C

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only and functional operation of the device at these or

any other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

Rev. B | Page 4 of 12

Data Sheet

ADM6305/ADM6306

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

RESET

GND

1

2

3

5

V

CC

ADM6305

TOP VIEW

(Not to Scale)

RST IN1

4

RST IN2

Figure 3. ADM6305 Pin Configuration

Table 4. ADM6305 Pin Function Descriptions

Pin No. Mnemonic Description

1

2

3

RESET

GND

RST IN1

Active Low, Open-Drain RESET Output.

Ground.

Adjustable Reset Comparator Input. This pin asserts RESET if the input voltage is below threshold. Its high input

impedance allows the use of an external resistor divider to program the monitoring threshold. Connect this pin to

V

_CCif it is not used.

4

5

RST IN2

V_CC

Adjustable Reset Comparator Input. This pin asserts RESET if the input voltage is below threshold. Its high input

impedance allows the use of an external resistor divider to program the monitoring threshold. Connect this pin to

V

_CCif it is not used.

Power Supply Input. V_CCis not monitored on the ADM6305.

RESET

GND

MR

1

2

3

5

4

V

CC

ADM6306

TOP VIEW

(Not to Scale)

RST IN

Figure 4. ADM6306 Pin Configuration

Table 5. ADM6306 Pin Function Descriptions

Pin No. Mnemonic Description

1

2

3

4

RESET

GND

MR

Active Low, Open-Drain RESET Output.

Ground.

Manual Reset Input.

RST IN

Adjustable Reset Comparator Input. This pin asserts RESET if the input voltage is below threshold. Its high input

impedance allows the use of an external resistor divider to program the monitoring threshold. Connect this pin to

V

_CCif it is not used.

5

V_CC

Power Supply Input. V_CCis monitored on the ADM6306.

Rev. B | Page 5 of 12

ADM6305/ADM6306

Data Sheet

TYPICAL PERFORMANCE CHARACTERISTICS

6.0

90

80

70

60

50

40

30

20

10

0

1mV/1µs

5.5

V

= 4.5V

CC

5.0

4.5

4.0

3.5

3.0

V

= 5.5V

CC

10mV/1µs

V

= 2.5V

CC

V

= 3.5V

CC

–40 –20

0

20

40

60

80

100 120 125

–40 –20

0

20

40

60

80

100 120 125

TEMPERATURE (°C)

Figure 5. Supply Current vs. Temperature

Figure 8. V_CCFalling Propagation Delay vs. Temperature

1.10

1.05

1.00

0.95

0.90

0.85

10k

1k

100

10

TRANSIENT DURATION

(µs) V = 5V

TH

TRANSIENT DURATION

(µs) V = 2.5V

TH

1

–40 –20

0

20

40

60

80

100 120 125

0

400

800

1200

TEMPERATURE (°C)

OVERDRIVE, V – V (mV)

TH CC

Figure 6. Reset Timeout vs. Temperature

Figure 9. Maximum Transient Duration vs. V_CCReset Threshold Overdrive

1.010

1.008

1.006

1.004

1.002

1.000

0.998

0.996

0.994

0.992

0.990

120

100

1mV/1µs

80

60

10mV/1µs

40

20

0

–40 –20

0

20

40

60

80

100 120 125

–40 –20

0

20

40

60

80

100 120 125

TEMPERATURE (°C)

Figure 7. Reset Threshold vs. Temperature

Figure 10. RST IN (V_TH= 1.23 V) Falling Propagation Delay vs. Temperature

Rev. B | Page 6 of 12

Data Sheet

ADM6305/ADM6306

10k

1k

100

10

1

TRANSIENT DURATION

(µs) 5V

TRANSIENT DURATION

(µs) 3V

1k

100

10

TRANSIENT DURATION

(µs) 5V

TRANSIENT DURATION

(µs) 3V

1

0

200

400

600

800

1000

1200

0

100

200

300

OVERDRIVE, V

– V

(mV)

OVERDRIVE, V

– V

(mV)

REF

RST IN

REF

RST IN

Figure 11. Maximum Transient Duration vs. RST IN (V_TH= 1.23 V) Threshold

Overdrive

Figure 13. Maximum Transient Duration vs. RST INx (V_TH= 0.4 V) Threshold

Overdrive

120

1mV/1µs

100

80

60

10mV/1µs

40

20

0

–40 –20

0

20

40

60

80

100 120 125

TEMPERATURE (°C)

Figure 12. RST INx (V_TH= 0.4 V) Falling Propagation Delay vs. Temperature

Rev. B | Page 7 of 12

ADM6305/ADM6306

Data Sheet

THEORY OF OPERATION

on this input. The ADM6305/ADM6306 are powered via V_CC.

Figure 9 shows the maximum transient duration vs. V_CCreset

threshold overdrive, for which reset pulses are not generated.

Figure 9 depicts the maximum pulse width that a negative going

The ADM6305/ADM6306 are compact, low power supervisory

circuits capable of monitoring two voltage rails. If a monitored

voltage drops below its associated threshold, the active low reset

output asserts low.

RESET

V_CCtransient may typically have without causing

to be

The ADM6305 monitors two supplies via two adjustable

resistor-programmable undervoltage reset inputs. Both RST

IN1 and RST IN2 have a reset threshold of either 0.4 V or

1.23 V depending on the particular model; that is, the RST

IN1 and RST IN2 threshold of the ADM6305DxARJZ model

is 1.23 V, while in the case of ADM6305DxARJZ1 model, it is

0.4 V. The V_CCinput of the ADM6305 is not a monitored input.

asserted. As the amplitude of the transient increases, the

maximum allowable pulse width decreases. The addition of a

bypass capacitor on V_CCprovides additional transient immunity.

RESET OUTPUT CONFIGURATION

The ADM6305/ADM6306 are available in a choice of four

reset timeouts. Once the monitored supplies rise above their

RESET

associated threshold level, the

signal remains low for

The ADM6306 has one adjustable undervoltage reset input,

RST IN, which features a choice of reset threshold, 0.4 V or

1.23 V (see the Ordering Guide for more information). The

ADM6306 incorporates a variety of internally pretrimmed V_CC

undervoltage threshold options for monitoring supply voltages

in increments between 2.5 V to 5 V. The ADM6306 also

includes a manual reset input.

the reset timeout period before deasserting. Subsequently, if

a monitored supply falls below its associated threshold, the

output reasserts. The open-drain

ADM6305/ADM6306 remains valid as long as V_CCexceeds 0.9 V.

RESET

output of the

The ADM6305 remains in UVLO when V_CCis below 1.5 V. The

RESET

output is controlled by RTS INx if V_CCexceeds 2.5 V.

INPUT CONFIGURATION

RESET

The open-drain

output allows the ADM6305 and

The threshold voltage at an adjustable input is either 0.4 V or

1.23 V. To monitor a voltage greater than the typical adjustable

threshold, V_RSTH, connect a resistor divider network to the

circuit as depicted in Figure 14, where

ADM6306 to interface easily with microprocessors and

devices with bidirectional reset pins. Connecting the supervi-

RESET

sory devices

RESET

output directly to the microcontrollers

pin with a single pull-up resistor allows either device

to issue a system reset (see Figure 15).

R1 R2



_RSTH









V_TH V

R2

V

IN

V

CC

R

PULL-UP

ADM6305/

ADM6306

R1

R2

MICROPROCESSOR

RESET

V

RSTH

RESET

Figure 15. Interfacing to Microprocessors with Bidirectional

Output

Figure 14. Setting the Adjustable Monitor

MANUAL RESET

The high input impedance (leakage of 25 nA) of the adjustable

inputs minimizes the offset error caused by the leakage current

and external resistor divider. This allows the user to apply a divider

with large resistance to minimize the loss. The offset voltage

caused by the leakage current is calculated by R1 × 25 nA.

MR

The ADM6306 features a manual reset input (

MR

) which, when

driven low, asserts the reset output. When

transitions from

low to high, reset remains asserted for the duration of the reset

MR

63.5 kΩ internal pull-up resistor so that the input is always

high when unconnected. An external push-button switch can

active timeout period before deasserting. The

input has a

The RST INx inputs are designed to ignore fast voltage

transients (see Figure 11 and Figure 12). Increase the noise

immunity by connecting a 0.1 μF bypass capacitor between

RST INx and ground. Note that adding capacitance to RST

INx slows the overall response time of the device.

MR

be connected between

generate a reset. Debounce circuitry is integrated on-chip for

MR

and ground so that the user can

this purpose. Noise immunity is provided on the

input,

and fast, negative-going transients of up to 0.1 μs (typical) are

There is no hysteresis associated with the 0.4 V adjustable

inputs; instead, a time-based glitch filter to prevent false

triggering is used. The glitch filter avoids the need to use a

portion of the operating supply range to provide hysteresis

MR

ignored. If required, a 0.1 ꢀF capacitor between

provides additional noise immunity.

and ground

Rev. B | Page 8 of 12

Data Sheet

ADM6305/ADM6306

OPTIONS

Table 6. ADM6306 V_CCReset Voltage Threshold Options

T_A= 25°C

T_A= −40°C to +125°C

Reset Threshold Number

Min

Typ

Max

Min

Max

2.563

2.696

2.768

2.87

Unit

V

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

2.463

2.591

2.66

2.5

2.63

2.7

2.8

2.93

3

3.08

3.2

3.3

3.4

3.5

3.6

3.7

3.8

3.9

4

4.1

4.2

4.3

4.38

4.5

4.63

4.7

4.8

4.9

5.0

2.538

2.669

2.741

2.842

2.974

3.045

3.126

3.248

3.35

3.451

3.553

3.654

3.756

3.857

3.959

4.06

4.162

4.263

4.365

4.446

4.568

4.699

4.771

4.872

4.974

5.075

2.438

2.564

2.633

2.73

2.857

2.925

3.003

3.12

3.218

3.315

3.413

3.51

3.608

3.705

3.803

3.9

3.998

4.095

4.193

4.27

4.388

4.514

4.583

4.68

2.758

2.886

2.955

3.034

3.152

3.251

3.349

3.448

3.546

3.645

3.743

3.842

3.94

4.039

4.137

4.236

4.314

4.433

4.561

4.63

3

3.075

3.157

3.28

3.383

3.485

3.588

3.69

3.793

3.895

3.998

4.1

4.203

4.305

4.408

4.49

4.613

4.746

4.818

4.92

5.023

5.125

4.728

4.827

4.925

4.778

4.875

Table 7. Reset Timeout Options

T_A= −40°C to +125°C

Reset Timeout Period Code

ADM630xD1

Min

1.0

Typ

1.4

Max

Unit

ms

2.0

ADM630xD2

20

28

40

ms

ADM630xD3

ADM630xD4

140

1120

200

1570

280

2240

ms

Table 8. Adjustable Input Threshold Options

Monitored Input Threshold

Model

RST IN1

1.23 V

0.4 V

N/A

RST IN2

1.23 V

0.4 V

N/A

RST IN

ADM6305_ _ _ _ _Z-RL7

ADM6305_ _ _ _ _Z1-RL7

ADM6306_ _ _ _ _ _ _Z-R7

ADM6306_ _ _ _ _ _ _Z1-R7

N/A

1.23 V

0.4 V

Rev. B | Page 9 of 12

ADM6305/ADM6306

Data Sheet

ADM6305D_ARJZ_-RL7

PACKING MATERIAL

RL7 = 7” TAPE & REEL

(3000 PIECE QUANTITY)

RESET TIMEOUT PERIOD CODE (1 TO 4)

TEMPERATURE RANGE

A: –40°C TO +125°C

RST IN1 & RST IN2 ADJUSTABLE THRESHOLD

1:0.4V & 0.4V

BLANK: 1.23V & 1.23V

PACKAGE DESIGNATOR

RJ = SOT-23

Z = LEAD-FREE

Figure 16. ADM6305 Ordering Code Structure

ADM6306D_ _ _ARJZ_R7

PACKING MATERIAL

R7 = 7” TAPE & REEL

(3000 PIECE QUANTITY)

RESET TIMEOUT (1 TO 4)

RESET THRESHOLD NUMBER

(SEE TABLE 6)

RST IN ADJUSTABLE THRESHOLD

1:0.4V

DASH: 1.23V

TEMPERATURE RANGE

A: –40°C TO +125°C

Z = LEAD-FREE

PACKAGE DESIGNATOR

RJ = SOT-23

Figure 17. ADM6306 Ordering Code Structure

Table 9. Standard Models

Monitored Input Threshold

Model

RST IN1

1.23 V

0.4 V

N/A

RST IN2

1.23 V

0.4 V

N/A

V_CCReset

N/A

RST IN

N/A

Minimum Reset Timeout

140 ms

1 ms

ADM6305D3ARJZ-RL7

ADM6305D3ARJZ1-RL7

ADM6306D131ARJZ-R7

ADM6306D131ARJZ1R7

ADM6306D329ARJZ-R7

ADM6306D330ARJZ-R7

ADM6306D331ARJZ-R7

ADM6306D344ARJZ-R7

ADM6306D346ARJZ-R7

N/A

3.08 V

2.93 V

3 V

1.23 V

0.4 V

N/A

1 ms

N/A

1.23 V

140 ms

N/A

3.08 V

4.38V

4.63 V

N/A

Rev. B | Page 10 of 12

Data Sheet

ADM6305/ADM6306

OUTLINE DIMENSIONS

3.00

2.90

2.80

5

1

4

3

3.00

2.80

2.60

1.70

1.60

1.50

2

0.95 BSC

1.90

BSC

1.30

1.15

0.90

0.20 MAX

0.08 MIN

1.45 MAX

0.95 MIN

0.55

0.45

0.35

0.15 MAX

0.05 MIN

10°

5°

0°

SEATING

PLANE

0.60

BSC

0.50 MAX

0.35 MIN

COMPLIANT TO JEDEC STANDARDS MO-178-AA

Figure 18. 5-Lead Small Outline Transistor Package [SOT-23]

(RJ-5)

Dimensions shown in millimeters

ROUND SPROCKET HOLES

PIN 1 MARKER

DIRECTION OF FEED

Figure 19. ADM6305/ADM6306 Reel Orientation

ORDERING GUIDE

Model^{1, 2, 3}

ADM6305D3ARJZ-RL7

Temperature Range Ordering Quantity⁴

Package Description

5-Lead SOT-23

Package Option

Branding

LG9

LG8

−40°C to +125°C

3,000

RJ-5

ADM6305D3ARJZ1-RL7 −40°C to +125°C

ADM6306D131ARJZ-R7 −40°C to +125°C

ADM6306D131ARJZ1R7 −40°C to +125°C

ADM6306D329ARJZ-R7 −40°C to +125°C

ADM6306D330ARJZ-R7 −40°C to +125°C

ADM6306D331ARJZ-R7 −40°C to +125°C

ADM6306D331ARJZ1R7 −40°C to +125°C

ADM6306D344ARJZ-R7 −40°C to +125°C

ADM6306D346ARJZ-R7 −40°C to +125°C

LGA

LGC

LLY

LM0

LG6

LQC

LM1

LLZ

¹ADM6305 and ADM6306 follow the C2 Pin 1 orientation standard for tape and reel packaging (see Figure 19).

²If ordering nonstandard models, complete the ordering code shown in Figure 16 and Figure 17 by inserting the reset threshold, reset timeout, and adjustable

threshold suffixes. Contact Sales for availability of nonstandard models, quoting ADM6305-NTSD or ADM6306-NTSD first, and then the complete ordering code.

³Z = RoHS Compliant Part.

⁴A minimum of 10,000 must be ordered for nonstandard models.

Rev. B | Page 11 of 12

ADM6305/ADM6306

NOTES

Data Sheet

registered trademarks are the property of their respective owners.

D09345-0-6/14(B)

Rev. B | Page 12 of 12


型号：	ADM6306D331ARJZ1R7
厂家：	ADI
描述：	Multiple Input Programmable Supervisory ICs 光电二极管
文件：	总12页 (文件大小：282K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ADM6306D331ARJZ1R7 [ADI]

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