UNISONIC TECHNOLOGIES CO TL1451 Technical data
查询TL1451供应商
UTC TL1451 LINEAR INTEGRATED CIRCUIT
DUAL PULSE-WIDTH-MODULATION
CONTROL CIRCUITS
DESCRIPTION
The UTC TL1451 incorporates on a single monolithic chip
all the functions required in the construction of two pulsewidth-modulation (PWM) control circuits. Designed primarily
for power supply control, the TL1451 contains an on-chip 2.5V
regulator, two error amplifiers, an adjustable oscillator, two
dead-time comparators, undervoltage lockout circuitry, and
dual common –emitter output transistor circuits.
SOP-16
FEATURES
*Complete PWM Power control Circuitry
*Completely Synchronized Operation
*Internal Undervoltage Lockout Protection
*Wide Supply Voltage Range
*Internal Short-Circuit Protection
*Oscillator Frequency…500kHz Max
*Variable Dead Time Provides Control Over Total Range
*Internal Regulator Provides a Stable 2.5V Reference Supply
PIN CONFIGURATIONS
CT
1
2
RT
ERROR
AMPLIFIER
1
1 FEEDBACK
1 IN+
1 IN-
1 DTC
1 OUT
GND
3
4
5
6
7
8 9
16
15
14
13
12
11
10
REF
SCP
2 IN+
AMPLIFIER
2 IN-
2 FEEDBACK
2 DTC
2 OUT
Vcc
DIP-16
ERROR
2
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R103-011,A
UTC TL1451 LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
UTC UNISONIC TECHNOLOGIES CO., LTD. 2
QW-R103-011,A
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