LTC2903IS6-C1#TRM datasheet, PDF

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LTC2903IS6-C1#TRM: DescriptionSupervisory Circuits LTC2903-1 - Precision Quad Supply Monitor in 6-Lead SOT-23; CategoryPower/power management The power supply circuit; File Size155KB，16 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC2903IS6-C1#TRM Overview

Supervisory Circuits LTC2903-1 - Precision Quad Supply Monitor in 6-Lead SOT-23

LTC2903IS6-C1#TRM Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
package instruction	1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN
Reach Compliance Code	not_compliant
ECCN code	EAR99
Adjustable threshold	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G6
JESD-609 code	e0
length	2.9 mm
Humidity sensitivity level	1
Number of channels	4
Number of functions	1
Number of terminals	6
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	VSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
Certification status	Not Qualified
Maximum seat height	1 mm
Nominal supply voltage (Vsup)	5 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	1.625 mm
Base Number Matches	1

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LTC2903-1

Precision Quad Supply

Monitor in 6-Lead SOT-23

FEATURES

■

DESCRIPTIO

■

Ultralow Voltage Reset: V

= 0.5V Guaranteed

Monitor Four Inputs Simultaneously

3.3V, 2.5V, 1.8V, ADJ (LTC2903-A1)

5V, 3.3V, 2.5V, 1.8V (LTC2903-B1)

5V, 3.3V, 1.8V, –5.2V (LTC2903-C1)

3.3V, ADJ, ADJ, ADJ (LTC2903-D1)

5V, ADJ, ADJ, ADJ (LTC2903-E1)

Guaranteed Threshold Accuracy:

±1.5%

Monitored Voltage over Temperature

10% (A1, B1, C1) and 5% (D1, E1) Undervoltage

Monitoring

Low Supply Current: 20µA Typical

200ms Reset Time Delay

Active Low Open-Drain RST Output

Power Supply Glitch Immunity

Low Profile (1mm) SOT-23 (ThinSOT

) Package

The LTC

2903-1 monitors up to four supply voltages. The

common reset output remains low until all four inputs

have been in compliance for 200ms. Voltage thresholds

maintain

±1.5%

accuracy over temperature (with respect

to the monitored voltage). The LTC2903-1 features an

open-drain RST output with a weak internal pullup.

Internal supply voltage (V

) is generated from the greater

voltage on the V1, V2 inputs. V

= V1 for LTC2903-D1 and

LTC2903-E1. The RST output is guaranteed to sink at least

5µA (V

= 0.15V) for V

down to 0.5V and will typically

conduct current down to 0V. Quiescent current is 20µA

typical, making the LTC2903-1 ideal for power conscious

systems. The LTC2903-1 is available in a 6-lead low profile

(1mm) SOT-23 package.

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

APPLICATIO S

■

Multivoltage Systems

Optical Networking Systems

Cell Phone Base Stations

Network Servers

TYPICAL APPLICATIO

Low Voltage Reset Pull-Down Performance

vs External Pull-Up Current and Input Supply Voltage

0.10

0.09

3.3V

DC/DC

2.5V

CONVERTER

1.8V

LTC2903-B1

RST

GND

2903 TA01

RESET PIN VOLTAGE (V)

SYSTEM

LOGIC

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

1µA

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

, INPUT SUPPLY VOLTAGE (V)

2µA

5µA

20µA

10µA

0.1µF

= V1 = V2 = V3

LTC2903-B1

2903 TA01b

29031f a

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