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TL1451

DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

Unisonic Technologies 

TL1451

LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise specified)

PARAMETER

SYMBOL

VALUE

UNIT

Supply Voltage

VCC

51

V

Amplifier Input Voltage

VIN

20

V

Collector Output Voltage

VOUT

51

V

Collector Output Current

IOUT

21

mA

DIP-16

1000

Power Dissipation

SOP-16

PD

500

mW

TSSOP-16

700

Junction Temperature

TJ

+125

°C

Operating Temperature

TOPR

-20 ~ +85

°C

Storage Temperature

TSTG

-40 ~ +150

°C

Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

2. The device is guaranteed to meet performance specification within 0℃ ~+70℃ operating temperature range

and assured by design from –20℃ ~ +85℃.

RECOMMENDED OPERATING CONDITIONS

PARAMETER

Supply Voltage

Amplifier Input Voltage

Collector Output Voltage

Collector Output Current(each Transistor)

Current into Feedback Terminal

Feedback Resistor

Timing Capacitor

Timing Resistor

Oscillator frequency

Operating Temperature

SYMBOL

VCC

VIN

VOUT

IOUT

IFB

RF

CT

RT

FOSC

TOPR

MIN

3.6

1.05

100

150

5.1

1

-20

TYP MAX

50

1.45

50

20

45

15000

100

500

85

UNIT

V

V

V

mA

µA

kΩ

pF

kΩ

kHz

°C

ELECTRICAL CHARACTERISTICS(VCC=6V, f=200kHz, Ta=25°C, unless otherwise specified.)

PARAMETER

Reference Section

Output Voltage

Output Voltage Change with Temperature

Input Voltage Regulation

Output Voltage Regulation

Short-Circuit Output Current

Undervoltage Lockout Section

Threshold Voltage (Vcc)

Upper

Lower

Hysteresis (Vcc)

Reset Threshold voltage (Vcc)

Short-Circuit Protection Control Section

Input Threshold Voltage(SCP)

Standby Voltage(SCP)

Latched Input Voltage (SCP)

Input (source) Current

Comparator Threshold Voltage (FEEDBACK)

SYMBOL

VOUT

△VIN

△VOUT

IOUT

VTHR

VHYS

VIN(THR)

VSTN-BY

VIN(LAT)

IIN(source)

VTHR

TEST CONDITIONS

IOUT=1mA

Ta= -20°C ~ 25°C

Ta= 25°C ~ 85°C

Vcc=3.6V ~ 40V

IOUT=0.1mA ~ 1mA

VOUT=0

IOUT(REF)=0.1mA

No pullup

No pullup

VIN=0.7V

MIN TYP MAX UNIT

2.4 2.5 2.6 V

-0.1 ±1

%

-0.2 ±1

2 12.5 mV

1 7.5 mV

3

10 30 mA

2.72

V

2.6

V

80 120

mV

1.5 1.9

V

0.65 0.7 0.75 V

140 185 230 mV

60 120 mV

-10 -15 -20 µA

1.18

V

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

3 of 14

QW-R103-011,C

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