Datasheet

ABSOLUTE MAXIMUM RATINGS
(1) (2)
ELECTRICAL CHARACTERISTICS
UCC284-EP
www.ti.com ....................................................................................................................................... SLVS862A – NOVEMBER 2008 – REVISED NOVEMBER 2008
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
IN
Input voltage range
(2)
-16 V
SD/CT Shutdown voltage range -5 6 V
T
J
Operating virtual junction temperature range -55 150 V
T
stg
Storage temperature range -65 150 ° C
Lead temperature (Soldering, 10 seconds) 300 ° C
(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.
(2) All voltages are with respect to ground. Currents are positive into and negative out of the specified terminals.
T
A
= – 55 ° C to 100 ° C for the UCC284, VIN = VOUT – 1.5 V, I
OUT
= 0 mA, C
OUT
= 4.7 µ F, and CT = 0.015 µ F. For
UCC284-ADJ, VOUT is set to – 3.3 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
UCC284-5 Fixed – 5-V 0.5-A Regulation Section
T
A
= 25 ° C – 5.075 – 5 – 4.925 V
Output voltage
Over all temperature conditions – 5.150 – 4.850 V
Line regulation T
A
= 25 ° C, VIN = – 5.2 V to – 15 V 1.5 10 mV
Over all temperature conditions 12
Load regulation T
A
= 25 ° C, I
OUT
= 0 mA to 0.5 A 0.1 0.25 %
Over all temperature conditions 0.1 0.30
Output noise voltage T
A
= 25 ° C, BW = 10 Hz to 10 kHz 200 µ VRMS
T
A
= 25 ° C, I
OUT
0.5 A, VOUT = – 4.8 V 0.2 0.5 V
Over all temperature conditions 0.2 0.55
Dropout voltage, VOUT – VIN
T
A
= 25 ° C, I
OUT
50 mA, VOUT = – 4.8 V 20 50 mV
Over all temperature conditions 20 55
UCC284-5 Fixed – 5-V 0.5-A Power Supply Section
Input voltage range – 15 – 5.2 V
Quiescent current charge pump on T
A
= 25 ° C, VIN = – 4.85 V
(1)
280 350 µ A
Over all temperature conditions 360
Quiescent current T
A
= 25 ° C, VIN = – 15 V 200 250 µ A
Over all temperature conditions 260
VIN = – 13 V, SD/CT = 0 V, T
A
= 0 ° C to 100 ° C
(2)
15 45 µ A
Quiescent current in shutdown
VIN = – 13 V, SD/CT = 0 V, T
A
= – 55 ° C to 0 ° C
(2)
100 µ A
Shutdown threshold T
A
= 25 ° C, At shutdown pin (SD/CT) – 1.0 – 0.7 – 0.4 V
Over all temperature conditions -1.2 -0.2
Shutdown input current T
A
= 25 ° C, SD/CT = 0 V 5 10 25 µ A
Over all temperature conditions 3 10 30
Output leakage in shutdown VIN = – 15 V, VOUT = 0 V
(3)
1 50 µ A
Overtemperature shutdown 140 ° C
Overtemperature hysteresis 20 ° C
UCC284-5 Fixed – 5-V 0.5-A Current Limit Section
(1) The internal charge pump is enabled only for dropout condition with low VIN. Only in this condition is the charge pump required to
provide additional output FET fate drive to maintain dropout specifications. For conditions where the charge pump is not required, it is
disabled, which lowers overall device power consumption.
(2) Ensured by design. Not production tested.
(3) In the application during shutdown mode, output leakage current adds to quiescent current.
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Product Folder Link(s): UCC284-EP