UC384XBD MOTOROLA [Motorola, Inc], UC384XBD Datasheet - Page 2

• Manufacturer Part Number: UC384XBD
• Description: HIGH PERFORMANCE CURRENT MODE CONTROLLERS
• Manufacturer: MOTOROLA [Motorola, Inc]

MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
the operating ambient temperature range that applies [Note 3], unless otherwise noted.)
REFERENCE SECTION
OSCILLATOR SECTION
NOTES: 1. Maximum package power dissipation limits must be observed.
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 1)
Output Energy (Capacitive Load per Cycle)
Current Sense and Voltage Feedback Inputs
Error Amp Output Sink Current
Power Dissipation and Thermal Characteristics
D Suffix, Plastic Package, SO–14 Case 751A
D1 Suffix, Plastic Package, SO–8 Case 751
N Suffix, Plastic Package, Case 626
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature Range
Reference Output Voltage (I O = 1.0 mA, T J = 25 C)
Line Regulation (V CC = 12 V to 25 V)
Load Regulation (I O = 1.0 mA to 20 mA)
Temperature Stability
Total Output Variation over Line, Load, and Temperature
Output Noise Voltage (f = 10 Hz to 10 kHz, T J = 25 C)
Long Term Stability (T A = 125 C for 1000 Hours)
Output Short Circuit Current
Frequency
Frequency Change with Voltage (V CC = 12 V to 25 V)
Frequency Change with Temperature
Oscillator Voltage Swing (Peak–to–Peak)
Discharge Current (V OSC = 2.0 V)
2
Maximum Power Dissipation @ T A = 25 C
Thermal Resistance, Junction–to–Air
Maximum Power Dissipation @ T A = 25 C
Thermal Resistance, Junction–to–Air
Maximum Power Dissipation @ T A = 25 C
Thermal Resistance, Junction–to–Air
UC3844B, UC3845B
UC2844B, UC2845B
T J = 25 C
T A = T low to T high
T J = 25 C (R T = 6.2 k, C T = 1.0 nF)
T A = T low to T high
T J = 25 C
T A = T low to T high (UC284XB, UC384XB)
T A = T low to T high
2. Adjust V CC above the Startup threshold before setting to 15 V.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
T low = 0 C for UC3844B, UC3845B
= – 25 C for UC2844B, UC2845B
= – 40 C for UC3844BV, UC3845BV
Rating
Characteristic
(UC384XBV)
(V CC = 15 V [Note 2], R T = 10 k, C T = 3.3 nF. For typical values T A = 25 C, for min/max values T A is
UC3844B, 45B UC2844B, 45B
(I CC + I Z )
Symbol
T high = + 70 C for UC3844B, UC3845B
R JA
R JA
R JA
T stg
V in
P D
P D
P D
T A
I O
I O
T J
W
= + 85 C for UC2844B, UC2845B
= +105 C for UC3844BV, UC3845BV
Symbol
Reg load
Reg line
f OSC / V
f OSC / T
I dischg
V OSC
f OSC
V ref
V ref
– 0.3 to + 5.5
I SC
– 65 to +150
T S
V n
– 25 to + 85
S
0 to + 70
Value
+150
1.25
862
145
702
178
100
1.0
5.0
30
10
4.95
– 30
Min
225
4.9
7.8
7.5
49
48
–
–
–
–
–
–
–
–
–
Unit
mW
mW
C/W
C/W
C/W
mA
mA
W
UC284XB
A
V
C
C
C
J
– 85
Typ
250
5.0
2.0
3.0
0.2
5.0
0.2
1.0
1.6
8.3
50
52
–
–
–
–
MOTOROLA ANALOG IC DEVICE DATA
–180
Max
5.05
275
5.1
1.0
8.8
8.8
20
25
55
56
–
–
–
–
–
–
4.82
– 30
Min
225
4.9
7.8
7.6
7.2
49
48
–
–
–
–
–
–
–
–
UC384XB, XBV
– 85
Typ
250
5.0
2.0
3.0
0.2
5.0
0.2
0.5
1.6
8.3
50
52
–
–
–
–
–180
Max
5.18
275
5.1
1.0
8.8
8.8
8.8
20
25
55
56
–
–
–
–
–
mV/ C
Unit
kHz
mV
mV
mV
mA
mA
%
%
V
V
V
V