UC2843BD1 STMicroelectronics, UC2843BD1 Datasheet - Page 4

IC CTLR PWM HP CURR MODE SO-8

UC2843BD1

Manufacturer Part Number
UC2843BD1
Description
IC CTLR PWM HP CURR MODE SO-8
Manufacturer
STMicroelectronics
Datasheet

Specifications of UC2843BD1

Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
100%
Voltage - Supply
8.2 V ~ 25 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-25°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
500kHz
Duty Cycle (max)
100 %
Output Voltage
4.95 V to 5.05 V
Output Current
1000 mA
Mounting Style
SMD/SMT
Switching Frequency
500 KHz
Operating Supply Voltage
30 V
Maximum Operating Temperature
+ 150 C
Fall Time
50 ns
Minimum Operating Temperature
- 40 C
Rise Time
50 ns
Synchronous Pin
No
Topology
Boost, Flyback, Forward
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
STUC2843BD1

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UC2843BD1-LF
Manufacturer:
ST
0
Part Number:
UC2843BD1013TR
Manufacturer:
ST
Quantity:
20 000
Part Number:
UC2843BD1013TR
Quantity:
5 000
Part Number:
UC2843BD1013TR
0
Company:
Part Number:
UC2843BD1013TR
Quantity:
80 000
Company:
Part Number:
UC2843BD1013TR
Quantity:
5 000
Part Number:
UC2843BD1G
Manufacturer:
ON Semiconductor
Quantity:
1 862
Part Number:
UC2843BD1R2G
Manufacturer:
ON
Quantity:
10 000
Part Number:
UC2843BD1R2G
Manufacturer:
TI G4
Quantity:
2 779
Part Number:
UC2843BD1R2G
Manufacturer:
ST
0
Part Number:
UC2843BD1R2G
0
Company:
Part Number:
UC2843BD1R2G
Quantity:
20 000
Company:
Part Number:
UC2843BD1R2G
Quantity:
27
Company:
Part Number:
UC2843BD1R2G
Quantity:
500
Notes : 1. Max package power dissipation limits must be respected; low duty cycle pulse techniques are used during test maintain T
UC2842B/3B/4B/5B - UC3842B/3B/4B/5B
ELECTRICAL CHARACTERISTICS (continued)
4/15
OUTPUT SECTION
UNDER-VOLTAGE LOCKOUT SECTION
PWM SECTION
TOTAL STANDBY CURRENT
Symbol
V
V
V
V
I
OLS
t
OH
t
I
OL
st
r
f
i
iz
2. These parameters, although guaranteed, are not 100% tested in production.
3. Parameter measured at trip point of latch with V
4. Gain defined as :
5. Adjust V
close to T
A =
Output Low Level
Output High Level
UVLO Saturation
Rise Time
Fall Time
Start Threshold
Min Operating Voltage
After Turn-on
Maximum Duty Cycle
Minimum Duty Cycle
Start-up Current
Operating Supply Current
Zener Voltage
V
V
i
above the start threshold before setting at 15 V.
PIN1
PIN3
amb
Parameter
as possible.
; 0 V
PIN3
0.8 V
I
I
I
T
T
X842B/4B
X843B/5B
X842B/4B
X843B/5B
X842B/3B
X844B/5B
V
V
V
I
VCC = 6V; I
I
SINK
SINK
SOURCE
SOURCE
i
j
j
i
i
PIN2
= 25mA
= 25 C C
= 25 C C
= 6.5V for UCX843B/45B
= 14V for UCX842B/44B
Test Conditions
= 20mA
= 200mA
= V
PIN2
= 20mA
= 200mA
PIN3
= 0.
SINK
L
L
= 0V
= 1nF (2)
= 1nF (2)
= 1mA
Min. Typ. Max. Min. Typ. Max.
7.8
7.0
13
12
15
94
47
30
9
UC284XB
13.5
13.5
0.1
1.6
0.1
8.4
7.6
0.3
0.3
50
50
16
10
96
48
12
36
150
150
100
0.4
2.2
1.1
9.0
8.2
0.5
0.5
17
11
50
17
0
14.5
7.8
8.5
7.0
13
12
94
47
30
UC384XB
13.5
13.5
1.6
0.1
0.1
8.4
7.6
0.3
0.3
50
50
16
10
96
48
12
36
17.5
11.5
150
150
100
0.4
2.2
1.1
9.0
8.2
0.5
0.5
50
17
0
j
Unit
as
mA
mA
mA
ns
ns
%
%
%
V
V
V
V
V
V
V
V
V
V

Related parts for UC2843BD1