UC2842AD Microsemi Analog Mixed Signal Group, UC2842AD Datasheet - Page 5
UC2842AD
Manufacturer Part Number
UC2842AD
Description
IC PWM CURRENT MODE 14SOIC
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet
1.UC3844AM.pdf
(8 pages)
Specifications of UC2842AD
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
100%
Voltage - Supply
11 V ~ 25 V
Buck
Yes
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-40°C ~ 85°C
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Frequency-max
500kHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UC2842AD
Manufacturer:
TI
Quantity:
20 000
Company:
Part Number:
UC2842AD8
Manufacturer:
TI
Quantity:
13 178
Part Number:
UC2842AD8
Manufacturer:
TI/德州仪器
Quantity:
20 000
Company:
Part Number:
UC2842AD8TR
Manufacturer:
VISHAY
Quantity:
30 000
Part Number:
UC2842AD8TR
Manufacturer:
TI/德州仪器
Quantity:
20 000
Company:
Part Number:
UC2842AD8TRG4
Manufacturer:
TI
Quantity:
14 033
Part Number:
UC2842ADR
Manufacturer:
UC/TI
Quantity:
20 000
Part Number:
UC2842ADTR
Manufacturer:
TI/德州仪器
Quantity:
20 000
Copyright © 1995
Rev. 1.2a 10/25
FIGURE 1. — OSCILLATOR FREQUENCY vs. TIMING
100k
10k
1M
0
RESISTOR
300
1.0k
C
T
R
= 4.7nF
T
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
- (ohms)
3.0k
FIGURE 2. — MAXIMUM DUTY CYCLE vs. TIMING RESISTOR
100.0
C
80.0
60.0
40.0
20.0
U R R E N T
P
0
10.0k
C
R O D U C T I O N
T
C H A R A C T E R I S T I C C U R V E S
= 1nF
C
T
= 2.2nF
30.0k
300
M
O D E
100k
1.0k
R
T
P W M C
- (ohms)
3.0k
D
Note: Output drive frequency is half the oscillator frequency for
A T A
10.0k
O N T R O L L E R
the UCx844A/5A devices.
UC184xA/284xA/384xA
S
30.0k
H E E T
GROUND
For R
100k
R
T
T
V
/C
> 5k, f
REF
T
8
4
5
1.72
R
T
C
T
R
T
C
T
5