AS3843NT 查看數據表（PDF） - Astec Semiconductor => Silicon Link
零件编号
产品描述 (功能)
生产厂家
AS3843NT Datasheet PDF : 20 Pages
| |||
Current Mode Controller
AS384x
Electrical Characteristics (contÕd)
Electrical characteristics are guaranteed over full junction temperature range (0 to 105¡C). Ambient temperature must be derated
based on power dissipation and package thermal characteristics. The conditions are: VCC = 15 V, RT = 10 k½, and CT = 3.3 nF, unless
otherwise stated. To override UVLO, VCC should be raised above 17 V prior to test.
Parameter
Error Amplifier
Input Voltage
Input Bias Current
Voltage Gain
Transconductance
Unity Gain Bandwidth1
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
Output Swing High
Output Swing Low
Current Sense Comparator
Transfer Gain2,3
ISENSE Level Shift2
Maximum Input Signal2
Power Supply Rejection Ratio
Input Bias Current
Propagation Delay to Output1
Output
Output Low Level
Output High Level
Rise Time1
Fall Time1
Housekeeping
Start-up Threshold
Minimum Operating Voltage
After Turn On
Output Low Level in UV State
Over-Temperature Shutdown4
Symbol
VFB
IBIAS
AVOL
Gm
GBW
PSRR
ICOMPL
ICOMPH
VCOMPH
VCOMPL
AVCS
VLS
PSRR
IBIAS
tPD
VOL
VOL
VOH
VOH
tR
tF
VCC(on)
VCC(min)
VOUV
TOT
Test Condition
TJ = 25¡C
2 ² VCOMP ² 4 V
12 ² VCC ² 25 V
VFB = 2.7 V, VCOMP = 1.1 V
VFB = 2.3 V, VCOMP = 5 V
VFB = 2.3 V, RL = 15 k½ to Ground
VFB = 2.7 V, RL = 15 k½ to Pin 8
Ð0.2 ² VSENSE ² 0.8 V
VSENSE = 0 V
VCOMP = 5 V
12 ² VCC ² 25 V
ISINK = 20 mA
ISINK = 200 mA
ISOURCE = 20 mA
ISOURCE = 200 mA
CL = 1 nF
CL = 1 nF
3842/4
3843/5
3842/4
3843/5
ISINK = 20 mA, VCC = 6 V
Min.
Typ.
Max. Unit
2.475
65
0.8
60
2
0.5
5
2.500
Ð0.1
90
1
1.2
70
6
0.8
5.5
0.7
2.525
Ð1
1
1.1
V
µA
dB
mA/mV
MHz
dB
mA
mA
V
V
2.85
3.0
3.15
V/V
1.5
V
0.9
1
1.1
V
70
dB
Ð1
Ð10
µA
85
150
ns
0.1
0.4
V
1.5
2.2
V
13
13.5
V
12
13.5
V
50
150
ns
50
150
ns
15
16
17
V
7.8
8.4
9.0
V
9
10
11
V
7.0
7.6
8.2
V
1.5
2.0
V
125
¡C
ASTEC Semiconductor
5
Share Link: 