ABSOLUTE MAXIMUM RATINGS
(1)
ELECTRICAL CHARACTERISTICS
UCC2946-Q1
www.ti.com
................................................................................................................................................. SGLS273B – OCTOBER 2004 – REVISED MARCH 2009
over operating free-air temperature range (unless otherwise noted)
UCC2946
V
IN
Input voltage range 10 V
I
OUT
WDO output current 20 mA
T
J
Junction temperature range – 55 ° C to 150 ° C
T
stg
Storage temperature – 65 ° C to 150 ° C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 300 ° C
ESD rating, HBM 1500 V
(1) 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 under " recommended operating
conditions " is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Voltages
are with respect to GND. Currents are positive into, and negative out of the specified terminal.
T
A
= – 40 ° C to 105 ° C, 2.1 V ≤ V
DD
≤ 5.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Reference
V
DD
Operating voltage 2.1 5.5 V
I
DD
Supply current 12 18 µ A
V
DD(min)
Minimum operating voltage
(1)
1.1 V
Reset Section
Reset threshold voltage V
DD
rising 1.17 1.235 1.26 V
Threshold hysteresis 15 mV
I
LEAK
Input leakage current 5 nA
V
OH
High-level output voltage I
SOURCE
= 2 mA V
DD
– 0.3 V
I
SINK
= 2 mA 0.1
V
OL
Low-level output voltage V
I
SINK
= 20 µ A, V
DD
= 1 V 0.4
VDD-to-output delay time V
DD
= – 1 mV/ µ s 120 µ s
Reset period C
RP
= 64 nF 140 200 320 ms
Watchdog Section
V
IH
High-level input voltage, WDI 0.7 × V
DD
V
V
IL
Low-level input voltage, WDI 0.3 × V
DD
V
Watchdog period C
RP
= 64 nF 0.96 1.60 2.56 s
Watchdog pulse width 50 ns
V
OH
High-level output voltage I
SOURCE
= 2 mA V
DD
– 0.3 V
V
OL
Low-level output voltage I
SINK
= 2 mA 0.1 V
(1) Minimum supply voltage where RES is considered valid.
Copyright © 2004 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): UCC2946-Q1
评论0
最新资源