Linear Technology LTC2913IMS-2, LTC2913 Datasheet

LTC2913

1

2913fb

FEATURES

APPLICATIONS

DESCRIPTION

Dual UV/OV

Voltage Monitor

The LTC®2913 is a dual input voltage monitor intended for
multiple voltages in a variety of applications. Dual inputs for
each voltage allow monitoring two separate undervoltage
(UV) conditions and two separate overvoltage (OV)
conditions. All monitors share a common undervoltage
output and a common overvoltage output. The LTC2913-1
has latching capability for the overvoltage output. The
LTC2913- 2 has functionality to disable both the over voltage
and undervoltage outputs.

Glitch fi ltering ensures reliable reset operation without
false or noisy triggering.

The LTC2913 provides a precise, versatile, space-con­scious, micropower solution for voltage monitoring.

n

Monitors Two Voltages Simultaneously

n

Adjustable UV and OV Trip Values

n

Guaranteed Threshold Accuracy: ±1.5%

n

Input Glitch Rejection

n

Adjustable Reset Timeout with Disable

n

44μA Quiescent Current

n

Open-Drain OV and UV Outputs

n

Guaranteed OV and UV for VCC ≥ 1V

n

Available in 10-Lead MSOP and (3mm × 3mm)

DFN Packages

n

Desktop and Notebook Computers

n

Network Servers

n

Core, I/O Voltage Monitors

Dual OV/UV Supply Monitor Typical Transient Duration

vs Comparator Overdrive

TYPICAL APPLICATION

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.

27.4k1k

44.2k

VH1

LTC2913-1

VL1
VH2

GND TMR

SYSTEM

POWER

SUPPLIES

VL2

OV
UV

2913 TA01a

LATCH

4.53k

22nF

TIMEOUT = 200ms

1k4.53k

V

CC

0.1μF

5V

3.3V

COMPARATOR OVERDRIVE PAST THRESHOLD (%)

0.1

400

TYPICAL TRANSIENT DURATION (μs)

500

600

700

1 10 100

2913 TA01b

300

200

100

0

VCC = 2.3V

VCC = 6V

RESET OCCURS

ABOVE CURVE

LTC2913

2

2913fb

ABSOLUTE MAXIMUM RATINGS

Terminal Voltages
V

CC

(Note 3) ............................................. –0.3V to 6V

OV, UV ................................................... –0.3V to 16V

TMR ..........................................–0.3V to (V

CC

+ 0.3V)

VHn, VLn, LATCH, DIS .......................... –0.3V to 7.5V

Terminal Currents
I

VCC

..................................................................+10mA

I

UV

, IOV ...............................................................10mA

(Notes 1, 2)

1
2
3
4
5

VH1

VL1

VH2

VL2

GND

10
9
8
7
6

V

CC

TMR
LATCH
UV
OV

TOP VIEW

MS PACKAGE

10-LEAD PLASTIC MSOP

T

JMAX

= 150°C, θJA = 120°C/W

TOP VIEW

11

DD PACKAGE

10-LEAD (3mm × 3mm) PLASTIC DFN

10

9

6

7

8

4

5

3

2

1

V

CC

TMR

LATCH

UV

OV

VH1

VL1

VH2

VL2

GND

T

JMAX

= 150°C, θJA = 43°C/W

EXPOSED PAD (PIN 11) PCB GND CONNECTION OPTIONAL

ORDER PART NUMBER MS PART MARKING* ORDER PART NUMBER DD PART MARKING*

LTC2913CMS-1
LTC2913IMS-1
LTC2913HMS-1

LTCKK
LTCKK
LTCKK

LTC2913CDD-1
LTC2913IDD-1
LTC2913HDD-1

LCKN
LCKN
LCKN

1
2
3
4
5

VH1

VL1

VH2

VL2

GND

10
9
8
7
6

V

CC

TMR
DIS
UV
OV

TOP VIEW

MS PACKAGE

10-LEAD PLASTIC MSOP

T

JMAX

= 150°C, θJA = 120°C/W

TOP VIEW

11

DD PACKAGE

10-LEAD (3mm × 3mm) PLASTIC DFN

10

9

6

7

8

4

5

3

2

1

V

CC

TMR

DIS

UV

OV

VH1

VL1

VH2

VL2

GND

T

JMAX

= 150°C, θJA = 43°C/W

EXPOSED PAD (PIN 11) PCB GND CONNECTION OPTIONAL

ORDER PART NUMBER MS PART MARKING* ORDER PART NUMBER DD PART MARKING*

LTC2913CMS-2
LTC2913IMS-2
LTC2913HMS-2

LTCKM
LTCKM
LTCKM

LTC2913CDD-2
LTC2913IDD-2
LTC2913HDD-2

LCKP
LCKP
LCKP

Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/

*The temperature grade is identifi ed by a label on the shipping container.

Operating Temperature Range

LTC2913C ................................................ 0°C to 70°C

LTC2913I.............................................. –40°C to 85°C

LTC2913H .......................................... –40°C to 125°C

Storage Temperature Range ................... –65°C to 150°C

Lead Temperature (Soldering, 10 sec)

MSOP ...............................................................300°C

PACKAGE/ORDER INFORMATION

LTC2913

3

2913fb

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.

Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

SHUNT

VCC Shunt Regulator Voltage ICC = 5mA

l

6.2 6.6 6.9 V

–40ºC < T

A

< 125ºC

l

6.2 6.6 7.0 V

ΔV

SHUNT

VCC Shunt Regulator Load Regulation ICC = 2mA to 10mA

l

200 300 mV

V

CC

Supply Voltage (Note 3)

l

2.3 V

SHUNT

V

V

CCR(MIN)

Minimum VCC Output Valid DIS = 0V

l

1V

V

CC(UVLO)

Supply Undervoltage Lockout DIS = 0V, VCC Rising

l

1.9 2 2.1 V

ΔV

CC(UVHYST)

Supply Undervoltage Lockout Hysteresis DIS = 0V

l

52550 mV

I

CC

Supply Current VCC = 2.3V to 6V

l

44 80 μA

V

UOT

Undervoltage/Overvoltage Threshold

l

492 500 508 mV

t

UOD

Undervoltage/Overvoltage Threshold to
Output Delay

VHn = V

UOT

– 5mV or VLn = V

UOT

+ 5mV

l

50 125 500 μs

I

VHL

VHn, VLn Input Current

l

±15 nA

–40ºC < T

A

< 125ºC

l

±30 nA

t

UOTO

UV/OV Time-Out Period C

TMR

= 1nF

l

6 8.5 12.5 mS

–40ºC < T

A

< 125ºC

l

6 8.5 14 mS

V

LATCH(VIH)

OV Latch Clear Input High

l

1.2 V

V

LATCH(VIL)

OV Latch Clear Input Low

l

0.8 V

I

LATCH

LATCH Input Current V

LATCH

> 0.5V

l

±1 μA

V

DIS(VIH)

DIS Input High

l

1.2 V

V

DIS(VIL)

DIS Input Low

l

0.8 V

I

DIS

DIS Input Current V

DIS

> 0.5V

l

123 μA

I

TMR(UP)

TMR Pull-Up Current V

TMR

= 0V

l

–1.3 –2.1 –2.8 μA

–40ºC < T

A

< 125ºC

l

–1.2 –2.1 –2.8 μA

I

TMR(DOWN)

TMR Pull-Down Current V

TMR

= 1.6V

l

1.3 2.1 2.8 μA

–40ºC < T

A

< 125ºC

l

1.2 2.1 2.8 μA

V

TMR(DIS)

Timer Disable Voltage Referenced to V

CC

l

–180 –270 mV

V

OH

Output Voltage High UV/OV VCC = 2.3V, I

UV/OV

= –1μA

l

1V

V

OL

Output Voltage Low UV/OV VCC = 2.3V, I

UV/OV

= 2.5mA

V

CC

= 1V, IUV = 100μA

l
l

0.1

0.01

0.3

0.15

V
V

The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at TA = 25°C. VCC = 3.3V, VLn = 0.45V, VHn = 0.55V, LATCH = VCC,
DIS = Open unless otherwise noted. (Note 2)

Note 3: VCC maximum pin voltage is limited by input current. Since the

V

CC

pin has an internal 6.5V shunt regulator, a low impedance supply that
exceeds 6V may exceed the rated terminal current. Operation from higher
voltage supplies requires a series dropping resistor. See Applications
Information.

LTC2913

4

2913fb

Specifi cations are at TA = 25°C, VCC = 3.3V unless otherwise noted.

Supply Current vs Temperature

VCC Shunt Voltage
vs Temperature

VCC Shunt Voltage vs I

CC

Typical Transient Duration
vs Comparator Overdrive

UV Output Voltage vs V

CC

TEMPERATURE (°C)

–50

0.495

TRHESHOLD VOLTAGE, V

UOT

(V)

0.497

0.499

0.501

–25

0

25 50

2913 G01

75

0.503

0.505

0.496

0.498

0.500

0.502

0.504

100

TEMPERATURE (°C)

–50

25

I

CC

(μA)

30

40

50

–25

0

25 50

2913 G02

75

55

35

45

100

VCC = 5V

VCC = 3.3V

VCC = 2.3V

TEMPERATURE (°C)

–50

6.2

V

CC

(V)

6.3

6.4

6.5

6.6

6.8

–25

02550

2913 G03

75 100

6.7

10mA

5mA

2mA

1mA

200μA

ICC (mA)

–2 0

6.25

V

CC

(V)

6.45

6.75

2

6

8

6.35

6.65

6.55

4

10

12

–40°C

25°C

85°C

COMPARATOR OVERDRIVE PAST THRESHOLD (%)

0.1

400

TYPICAL TRANSIENT DURATION (μs)

500

600

700

1 10 100

2913 G05

300

200

100

0

VCC = 2.3V

VCC = 6V

RESET OCCURS

ABOVE CURVE

SUPPLY VOLTAGE, VCC (V)

0

UV VOLTAGE (V)

0.4

0.6

0.8

2913 G06

0.2

0

0.2

0.4

0.6

1.0

0.8

V

CC

UV WITH
10k PULL-UP

UV WITHOUT

PULL-UP

TIMING DIAGRAMS

VHn Monitor Timing

V

Hn

Monitor Timing (TMR Pin Strapped to VCC)

V

Ln

Monitor Timing

V

Ln

Monitor Timing (TMR Pin Strapped to VCC)

Input Threshold Voltage
vs Temperature

V

Hn

UV

V

UOT

1V

t

UOD

t

UOTO

2913 TD01

V

Ln

OV

V

UOT

1V

t

UOD

t

UOTO

2913 TD02

V

Hn

UV

V

UOT

1V

t

UOD

t

UOD

2913 TD03

V

Ln

OV

V

UOT

1V

t

UOD

t

UOD

2913 TD04

TYPICAL PERFORMANCE CHARACTERISTICS