參數(shù)資料
型號(hào): TL494MJ
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, CDIP16
封裝: CERAMIC, DIP-16
文件頁(yè)數(shù): 12/21頁(yè)
文件大?。?/td> 620K
代理商: TL494MJ
www.ti.com
GND
VCC
Reference
Regulator
C1
Pulse-Steering
Flip-Flop
C1
1D
DTC
CT
RT
PWM
Comparator
+
Error Amplifier 1
≈ 0.1 V
Dead-Time Control
Comparator
Oscillator
OUTPUT CTRL
(see Function Table)
0.7 mA
E1
C2
E2
+
Error Amplifier 2
1IN+
1IN
2IN+
2IN
FEEDBACK
REF
6
5
4
1
2
16
15
3
13
8
9
11
10
12
14
7
Q1
Q2
≈ 0.7 V
TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E – JANUARY 1983 – REVISED FEBRUARY 2005
FUNCTION TABLE
INPUT TO
OUTPUT FUNCTION
OUTPUT CTRL
VI = GND
Single-ended or parallel output
VI = Vref
Normal push-pull operation
FUNCTIONAL BLOCK DIAGRAM
2
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參數(shù)描述
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