UCC284- Datasheet, PDF (2/10 Pages) Texas Instruments – Low Dropout 0.5A Negative Linear Regulator

UCC284-5/-12/-ADJ
UCC384-5/-12/-ADJ
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –16V
Shutdown Voltage, SD/CT . . . . . . . . . . . . . . . . . . . . +6V to –5V
Storage Temperature . . . . . . . . . . . . . . . . . . . −65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C
All voltages are with respect to ground. Currents are positive
into, negative out of the specified terminal. All voltages are with
respect to ground. Consult Packaging Section of Databook for
thermal limitations and considerations of packages.
CONNECTION DIAGRAM
SOIC-8 (Top View)
DP Package
ELECTRICAL CHARACTERISTICS: Unless otherwise specified, T_A = 0°C to 70°C for the UCC384 and –40°C to 85°C
for the UCC284, VIN = VOUT – 1.5V, I_OUT = 0mA, C_OUT = 4.7µF, and CT = 0.015µF. For UCC384-ADJ, VOUT is set to –3.3V.
T_J = T_A.
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
UCC384-5 Fixed –5V 0.5A Regulation Section
Output Voltage
T_A = 25°C
Over all conditions
–5.075 –5 –4.925 V
–5.100
–4.850 V
Line Regulation
VIN = –5.3V to –15V
1.5 10 mV
Load Regulation
Output Noise Voltage
Drop Out Voltage, VOUT – VIN
I_OUT = 0mA to 0.5A
T_A = 25°C, BW = 10Hz to 10kHz
I_OUT 0.5A, VOUT = –4.8V
0.1 0.25 %
200
µVRMS
0.20 0.50 V
I_OUT 50mA, VOUT = –4.8V
20 50 mV
UCC384-5 Fixed –5V 0.5A Power Supply Section
Input Voltage Range
–15
–5.2 V
Quiescent Current Charge Pump On
VIN = –4.85V (Note 1)
280 350 µA
Quiescent Current
VIN = –15V
200 250 µA
Quiescent Current in Shutdown
VIN = –15V, SD/CT = 0V, No Load
24
45
µA
Shutdown Threshold
At Shutdown Pin
–1.0 –0.6 –0.4 V
Shutdown Input Current
SD/CT = 0V
5
17
25
µA
Output Leakage in Shutdown
VIN = –15V, VOUT = 0, 25°C
1
10
A
Over Temperature
50
A
Over Temperature Shutdown
140
°C
Over Temperature Hysteresis
20
°C
UCC384-5 Fixed –5V 0.5A Current Limit Section
Peak Current Limit
VOUT = 0V
0.7 1.1 1.5
A
Over Current Threshold
0.55 0.7 0.9
A
Current Limit Duty Cycle
VOUT = 0V
2.5
4
%
Overcurrent Time Out, T_ON
VOUT = 0V
300 450 650 µs
UCC384-12 Fixed 12V 0.5A Regulation Section
Output Voltage
T_A = 25°C
–12.18 –12 –11.82 V
Over all conditions
–12.24
–11.64 V
Line Regulation
VIN = –12.5V to –15V
5
15 mV
Load Regulation
Output Noise Voltage
I_OUT = 0mA to 0.5A
T_A = 25°C, BW = 10Hz to 10kHz
0.1 0.3
%
200
µVRMS
Drop Out Voltage, VOUT - VIN
I_OUT 0.5A, VOUT = –11.6V
I_OUT 50mA, VOUT = –11.6V
0.15 0.5
V
15 50 mV
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