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器件3D模型￥ 1.948
TL3843DR-8 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
SOIC-8
描述:
电流模式PWM控制器 CURRENT-MODE PWM CONTROLLERS
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3Hot
典型应用电路图在P10P11P12
原理图在P8P11
封装尺寸在P16P17P18P19P21P22
标记信息在P16P17P18P19
封装信息在P15P16P17P18P19P20P21P22
技术参数、封装参数在P4
应用领域在P1P27
电气规格在P5P6
导航目录
TL3843DR-8数据手册
Page:
of 27 Go
若手册格式错乱，请下载阅览PDF原文件
Freq (Hz)
Gain (dB)
10 100 1000 10000 100000 1000000 1E+7
-20 -100
0 -50
20 0
40 50
60 100
80 150
100 200
D003
Gain
Phase
R
T
, Timing Resistor (kOhm)
D
MAX
, Maximum Output Duty Cycle (%)
0.1 0.2 0.3 0.5 0.7 1 2 3 4 5 6 7 8 10
40
50
60
70
80
90
100
D004
Temperature (C)
I
DISCHARGE
(mA)
-75 -50 -25 0 25 50 75 100 125 150
7.4
7.6
7.8
8
8.2
8.4
8.6
8.8
9
9.2
D001
V
O
, Error Amp Output Voltage (V)
V
TH
, Current Sense Input Threshold (A)
0 2 4 6 8
0
0.2
0.4
0.6
0.8
1
1.2
D002
Ta = 125 C
Ta = 25 C
Ta = -55 C
TL2842
,
TL2843
,
TL2844
,
TL2845
TL3842
,
TL3843
,
TL3844
,
TL3845
SLVS038H –JANUARY 1989–REVISED JANUARY 2015
www.ti.com
Electrical Characteristics (continued)
over operating free-air temperature range, V
CC
= 15 V
(1)
, R
T
= 10 kΩ, C
T
= 3.3 nF (unless otherwise noted)
TL284x TL384x
PARAMETER TEST CONDITIONS
(2)
UNIT
MIN TYP
(2)
MAX MIN TYP
(2)
MAX
TLx842, TLx844 9 10 11 8.5 10 11.5
Minimum operating voltage
V
after startup
TLx843, TLx845 7 7.6 8.2 7 7.6 8.02
Pulse-Width-Modulator Section
TLx842, TLx844 95 97 100 95 97 100
Maximum duty cycle
TLx843, TLx845 46 48 50 46 48 50 %
Minimum duty cycle 0 0
Supply Voltage
Start-up current 0.5 1 0.5 1 mA
Operating supply current VFB and ISENSE at 0 V 11 17 11 17 mA
Limiting voltage I
CC
= 25 mA 34 34 V
7.6 Typical Characteristics
Figure 1. Oscillator Discharge Current Figure 2. Current Sense Input Threshold
vs vs
Temperature for V
IN
= 15 V and V
OSC
= 2V Error Amplifier Output Voltage for V
IN
= 15 V
Figure 3. Error Amplifier Open-Loop Gain and Phase Figure 4. Max Output Duty Cycle
vs vs
Frequency V
CC
= 15 V, R
L
= 100 kΩ, and T
A
= 25 °C Timing Resistor for V
CC
= 15, C
T
= 3.3 nF, T
A
= 25 °C
6 Submit Documentation Feedback Copyright © 1989–2015, Texas Instruments Incorporated
Product Folder Links: TL2842 TL2843 TL2844 TL2845 TL3842 TL3843 TL3844 TL3845
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