UC2842BD View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
UC2842BD Datasheet PDF : 16 Pages
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UC3842B, 43B UC2842B, 43B
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 1)
Output Energy (Capacitive Load per Cycle)
(ICC + IZ)
IO
W
30
mA
1.0
A
5.0
µJ
Current Sense and Voltage Feedback Inputs
Error Amp Output Sink Current
Power Dissipation and Thermal Characteristics
D Suffix, Plastic Package, SO–14 Case 751A
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
D1 Suffix, Plastic Package, SO–8 Case 751
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
N Suffix, Plastic Package, Case 626
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
Operating Junction Temperature
Operating Ambient Temperature
UC3842B, UC3843B
UC2842B, UC2843B
UC3842BV, UC3843BV
Vin
– 0.3 to + 5.5 V
IO
10
mA
PD
RθJA
PD
RθJA
PD
RθJA
TJ
TA
862
mW
145
°C/W
702
mW
178
°C/W
1.25
100
+150
0 to + 70
– 25 to + 85
–40 to +105
W
°C/W
°C
°C
Storage Temperature Range
Tstg
– 65 to +150 °C
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 2], RT = 10 k, CT = 3.3 nF. For typical values TA = 25°C, for min/max values TA is
the operating ambient temperature range that applies [Note 3], unless otherwise noted.)
UC284XB
UC384XB, XBV
Characteristics
Symbol Min
Typ
Max
Min
Typ
Max Unit
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = 25°C)
Vref
4.95
5.0
5.05
4.9
5.0
Line Regulation (VCC = 12 V to 25 V)
Regline
–
2.0
20
–
2.0
Load Regulation (IO = 1.0 mA to 20 mA)
Regload
–
3.0
25
–
3.0
Temperature Stability
TS
–
0.2
–
–
0.2
Total Output Variation over Line, Load, and Temperature
Vref
Output Noise Voltage (f = 10 Hz to 10 kHz, TJ = 25°C)
Vn
4.9
–
5.1
4.82
–
–
50
–
–
50
Long Term Stability (TA = 125°C for 1000 Hours)
S
–
5.0
–
–
5.0
Output Short Circuit Current
ISC
– 30 – 85 –180 – 30 – 85
OSCILLATOR SECTION
Frequency
TJ = 25°C
TA = Tlow to Thigh
TJ = 25°C (RT = 6.2 k, CT = 1.0 nF)
fOSC
49
52
55
49
52
48
–
56
48
–
225
250
275
225
250
Frequency Change with Voltage (VCC = 12 V to 25 V) ∆fOSC/∆V
–
0.2
1.0
–
0.2
Frequency Change with Temperature
TA = Tlow to Thigh
∆fOSC/∆T
–
1.0
–
–
0.5
Oscillator Voltage Swing (Peak–to–Peak)
VOSC
–
1.6
–
–
1.6
Discharge Current (VOSC = 2.0 V)
TJ = 25°C
TA = Tlow to Thigh (UC284XB, UC384XB)
TA = Tlow to Thigh (UC384XBV)
Idischg
7.8
8.3
8.8
7.8
8.3
7.5
–
8.8
7.6
–
–
–
–
7.2
–
NOTES: 1. Maximum Package power dissipation limits must be observed.
2. Adjust VCC 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.
Tlow = 0°C for UC3842B, UC3843B
Tlow = –25°C for UC2842B, UC2843B
Tlow = –40°C for UC3842BV, UC3843BV
Thigh = +70°C for UC3842B, UC3843B
Thigh = +85°C for UC2842B, UC2843B
Thigh = +105°C for UC3842BV, UC3843BV
5.1
20
25
–
5.18
–
–
–180
V
mV
mV
mV/°C
V
µV
mV
mA
kHz
55
56
275
1.0
%
–
%
–
V
mA
8.8
8.8
8.8
2
MOTOROLA ANALOG IC DEVICE DATA
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