参数资料
型号: TL1454CN
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 1 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDIP16
封装: PLASTIC, DIP-16
文件页数: 12/25页
文件大小: 412K
代理商: TL1454CN
TL1454, TL1454Y
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS086B – APRIL 1995 – REVISED NOVEMBER 1997
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
functional block diagram
_
+
_
+
OSC
PWM
Comparator 1
Error
Amplifier 1
To Internal
Circuitry
2.5 V
1.25 V
1 V
SCP
VCC
GND
DTC1 DTC2
14
3
15
7
16
4
5
13
12
6
11
10
21
CT
RT
OUT1
OUT2
8
VCC
UVLO
and
SCP Latch
IN1 +
IN1 –
IN2 +
IN2 –
COMP1
COMP2
REF
1.8 V
1.2 V
SCP
Comparator 1
Voltage
REF
9
VCC
0.65 V
1.25 V
PWM
Comparator 2
Error
Amplifier 2
SCP
Comparator 2
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