UC3842BN Просмотр технического описания (PDF) - ON Semiconductor
Номер в каталоге
Компоненты Описание
производитель
UC3842BN Datasheet PDF : 21 Pages
| |||
UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 5], 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 6], unless otherwise noted.)
UC284XB
UC384XB, XBV
Characteristics
Symbol Min Typ Max Min Typ Max Unit
OUTPUT SECTION
Output Voltage
Low State (ISink = 20 mA)
(ISink = 200 mA)
High State (ISource = 20 mA)
(ISource = 200 mA)
V
VOL
UC284XB, UC384XB
−
0.1 0.4
−
0.1 0.4
−
1.6 2.2
−
1.6 2.2
UC384XBV
−
−
−
−
1.6 2.3
UC284XB, UC384XB
VOH
13 13.5 −
13 13.5 −
UC384XBV
−
−
− 12.9 13.5 −
12 13.4 −
12 13.4 −
Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 1.0 mA) VOL(UVLO) −
0.1 1.1
−
0.1 1.1
V
Output Voltage Rise Time (CL = 1.0 nF, TJ = 25°C)
tr
−
50 150
−
50 150 ns
Output Voltage Fall Time (CL = 1.0 nF, TJ = 25°C)
tf
−
50 150
−
50 150 ns
UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold (VCC)
Vth
UCX842B, BV
UCX843B, BV
V
15
16
17 14.5 16 17.5
7.8 8.4 9.0 7.8 8.4 9.0
Minimum Operating Voltage After Turn−On (VCC)
VCC(min)
V
UCX842B, BV
9.0
10
11
8.5
10 11.5
UCX843B, BV
7.0 7.6 8.2 7.0 7.6 8.2
PWM SECTION
Duty Cycle
Maximum UC284XB, UC384XB
Maximum UC384XBV
Minimum
%
DC(max)
94
96
−
94
96
−
−
−
−
93
96
−
DC(min)
−
−
0
−
−
0
TOTAL DEVICE
Power Supply Current
Startup (VCC = 6.5 V for UCX843B,
Startup VCC 14 V for UCX842B, BV)
(Note 5)
ICC + IC
mA
−
0.3 0.5
−
0.3 0.5
−
12
17
−
12
17
Power Supply Zener Voltage (ICC = 25 mA)
VZ
30
36
−
30
36
−
V
5. Adjust VCC above the Startup threshold before setting to 15 V.
6. 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; −25°C for UC2842B, UC2843B; −40°C for UC3842BV, UC3843BV
Thigh = +70°C for UC3842B, UC3843B; +85°C for UC2842B, UC2843B; +105°C for UC3842BV, UC3843BV
NCV3843BV: Tlow = −40°C, Thigh = +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and
change control.
http://onsemi.com
4
Share Link: 