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TPS3850G18QDRCRQ1 Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce TPS3850G18QDRCRQ1
Description  Precision Voltage Supervisor with Programmable Window Watchdog Timer
Download  39 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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5
TPS3850-Q1
www.ti.com
SBVS264 – JANUARY 2017
Product Folder Links: TPS3850-Q1
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
6.4 Thermal Information
THERMAL METRIC(1)
TPS3850-Q1
UNIT
DRC (VSON)
10 PINS
RθJA
Junction-to-ambient thermal resistance
47.6
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
52.4
°C/W
RθJB
Junction-to-board thermal resistance
22.3
°C/W
ψJT
Junction-to-top characterization parameter
1.4
°C/W
ψJB
Junction-to-board characterization parameter
22.4
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
4.4
°C/W
(1)
When VDD falls below VUVLO, RESET is driven low.
(2)
When VDD falls below VPOR, RESET and WDO are undefined.
(3)
During power-on, VDD must be a minimum 1.6 V for at least 300 µs before the output corresponds to the SENSE voltage.
6.5 Electrical Characteristics
at 1.6 V
≤ VDD ≤ 6.5 V over the operating temperature range of –40°C ≤ TA, TJ ≤ +125°C (unless otherwise noted); the open-
drain pullup resistors are 10 kΩ for each output; typical values are at TJ = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
GENERAL CHARACTERISTICS
VDD
(1) (2) (3)
Supply voltage
1.6
6.5
V
IDD
Supply current
10
19
µA
RESET FUNCTION
VPOR
(2)
Power-on-reset voltage
IRESET = 15 µA, VOL(MAX) = 0.25 V
0.8
V
VUVLO
(1)
Undervoltage lockout voltage
1.35
V
VIT+(OV)
Overvoltage SENSE threshold accuracy,
entering RESET
VIT+(nom)–0.8%
VIT+(nom)+0.8%
VIT-(UV)
Undervoltage SENSE threshold accuracy,
entering RESET
VIT-(nom)–0.8%
VIT-(nom)+0.8%
VIT(ADJ)
Falling SENSE threshold voltage,
adjustable version only
0.3968
0.4
0.4032
V
VHYST
Hysteresis voltage
0.2%
0.5%
0.8%
ICRST
CRST pin charge current
CRST = 0.5 V
337
375
413
nA
VCRST
CRST pin threshold voltage
1.192
1.21
1.228
V
WINDOW WATCHDOG FUNCTION
ICWD
CWD pin charge current
CWD = 0.5 V
337
375
413
nA
VCWD
CWD pin threshold voltage
1.192
1.21
1.228
V
VOL
RESET, WDO output low
VDD = 5 V, ISINK = 3 mA
0.4
V
ID
RESET, WDO output leakage current
VDD = 1.6 V, VRESET, = VWDO = 6.5 V
1
µA
VIL
Low-level input voltage (SET0, SET1)
0.25
V
VIH
High-level input voltage (SET0, SET1)
0.8
V
VIL(WDI)
Low-level input voltage (WDI)
0.3 × VDD
V
VIH(WDI)
High-level input voltage (WDI)
0.8 × VDD
V
ISENSE
SENSE pin idle current
TPS3850Xyy(y), VSENSE = 5.0 V,
VDD = 3.3 V
2.1
2.5
µA
TPS3850H01 only, VSENSE = 5.0 V,
VDD = 3.3 V
–50
50
nA


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