參數(shù)資料
型號： UCC284SDR-5EP
廠商： TEXAS INSTRUMENTS INC
元件分類： 固定負(fù)電壓單路輸出LDO穩(wěn)壓器
英文描述： 5 V FIXED NEGATIVE LDO REGULATOR, 0.55 V DROPOUT, PDSO8
封裝： GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁數(shù)： 16/21頁
文件大小： 506K
代理商： UCC284SDR-5EP
ELECTRICAL CHARACTERISTICS
SLVS862A – NOVEMBER 2008 – REVISED NOVEMBER 2008 ....................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
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
Peak current limit
TA = 25°C, VOUT = 0 V
0.7
1.1
1.5
A
Over all temperature conditions
0.5
1.7
Overcurrent threshold
0.55
0.7
0.9
A
Current limit duty cycle
VOUT = 0 V
2.5
4
%
Overcurrent time out, tON
TA = 25°C, VOUT = 0 V
300
500
700
s
Over all temperature conditions
300
720
UCC284-12 Fixed 12-V 0.5-A Regulation Section
TA = 25°C
–12.18
–12
–11.82
V
Output voltage
Over all conditions
–12.24
–11.64
V
Line regulation
VIN = –12.5 V to –15 V
5
15
mV
Load regulation
IOUT = 0 mA to 0.5 A
0.1
0.3
%
Output noise voltage
TA = 25°C, BW = 10 Hz to 10 kHz
200
VRMS
IOUT = 0.5 A, VOUT = –11.6 V
0.15
0.5
V
Dropout voltage, VOUT - VIN
IOUT = 50 mA, VOUT = –11.6 V
15
50
mV
UCC284-12 Fixed –12-V 0.5-A Power Supply Section
Input voltage range
–15
–12.5
V
Quiescent current
VIN = -15 V
220
350
A
VIN = –13 V, SD/CT = 0 V
15
45
A
TA = 0°C to 100°C
(4)
Quiescent current in shutdown
VIN = –13 V, SD/CT = 0 V
100
A
TA = –55°C to 0°C
(4)
Ensured by design. Not production tested.
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
UCC284-12 Fixed –12 V –0.5-A Power Supply Section (continued)
Shutdown threshold
At shutdown pin (SD/CT)
–1.0
–0.7
–0.4
V
Shutdown input current
SD/CT = 0 V
5
10
25
A
Output leakage in shutdown
VIN = –15 V, VOUT = 0 V(1)
1
50
A
Overtemperature shutdown
140
°C
Overtemperature hysteresis
20
°C
UCC284-12 Fixed –12-V 0.5-A Current Limit Section
Peak current limit
VOUT = 0 V
0.7
1.1
1.5
A
Overcurrent threshold
0.55
0.7
0.9
A
Current limit duty cycle
VOUT = 0 V
2.5
4
%
Overcurrent time out, tON
VOUT = 0 V
300
500
700
s
UCC284-ADJ Adjustable 0.5-A Regulation Section
TA = 25°C
–1.27
–1.25
–1.23
V
Reference voltage
Over temperature
–1.275
–1.215
V
Line regulation
VIN = –3.5 V to –15 V, VOUT = VOUTS
0.5
3
mV
Load regulation
IOUT = 0 mA to 0.5 A
0.1
0.18
%
Output noise voltage
BW = 10 Hz to 10 kHz, TA = 25°C
200
VRMS
(1)
In the application during shutdown mode, output leakage current adds to quiescent current.
4
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): UCC284-EP
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