參數(shù)資料
型號： UCC284SDR-12EP
廠商： TEXAS INSTRUMENTS INC
元件分類： 固定負電壓單路輸出LDO穩(wěn)壓器
英文描述： 12 V FIXED NEGATIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8
封裝： PLASTIC, MS-012AA, SOIC-8
文件頁數(shù)： 15/21頁
文件大?。?/td> 506K
代理商： UCC284SDR-12EP
ABSOLUTE MAXIMUM RATINGS
(1) (2)
ELECTRICAL CHARACTERISTICS
www.ti.com ....................................................................................................................................... SLVS862A – NOVEMBER 2008 – REVISED NOVEMBER 2008
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VIN
Input voltage range(2)
-16
V
SD/CT Shutdown voltage range
-5
6
V
TJ
Operating virtual junction temperature range
-55
150
V
Tstg
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.
TA = –55°C to 100°C for the UCC284, VIN = VOUT – 1.5 V, IOUT = 0 mA, COUT = 4.7 F, and CT = 0.015 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
TA = 25°C
–5.075
–5
–4.925
V
Output voltage
Over all temperature conditions
–5.150
–4.850
V
Line regulation
TA = 25°C, VIN = –5.2 V to –15 V
1.5
10
mV
Over all temperature conditions
12
Load regulation
TA = 25°C, IOUT = 0 mA to 0.5 A
0.1
0.25
%
Over all temperature conditions
0.1
0.30
Output noise voltage
TA = 25°C, BW = 10 Hz to 10 kHz
200
VRMS
TA = 25°C, IOUT 0.5 A, VOUT = –4.8 V
0.2
0.5
V
Over all temperature conditions
0.2
0.55
Dropout voltage, VOUT – VIN
TA = 25°C, IOUT 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
TA = 25°C, VIN = –4.85 V
(1)
280
350
A
Over all temperature conditions
360
Quiescent current
TA = 25°C, VIN = –15 V
200
250
A
Over all temperature conditions
260
VIN = –13 V, SD/CT = 0 V, TA = 0°C to 100°C
(2)
15
45
A
Quiescent current in shutdown
VIN = –13 V, SD/CT = 0 V, TA = –55°C to 0°C
(2)
100
A
Shutdown threshold
TA = 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
TA = 25°C, SD/CT = 0 V
5
10
25
A
Over all temperature conditions
3
10
30
Output leakage in shutdown
VIN = –15 V, VOUT = 0 V (3)
1
50
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.
Copyright 2008, Texas Instruments Incorporated
3
Product Folder Link(s): UCC284-EP
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