BA9741A(16DIP) datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Power/power management> The power supply circuit> BA9741A(16DIP)

BA9741A(16DIP): DescriptionSwitching Regulator/Controller, Voltage-mode, 0.1A, 800kHz Switching Freq-Max, BIPolar, PDIP16; CategoryPower/power management The power supply circuit; File Size142KB，5 Pages; ManufacturerUNISONIC TECHNOLOGIES CO.,LTD; Websitehttp://www.unisonic.com.tw/

Download Datasheet Parametric View All

BA9741A(16DIP) Overview

Switching Regulator/Controller, Voltage-mode, 0.1A, 800kHz Switching Freq-Max, BIPolar, PDIP16

BA9741A(16DIP) Parametric

Parameter Name	Attribute value
Maker	UNISONIC TECHNOLOGIES CO.,LTD
package instruction	DIP, DIP16,.3
Reach Compliance Code	compliant
ECCN code	EAR99
control mode	VOLTAGE-MODE
JESD-30 code	R-PDIP-T16
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output current	0.1 A
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP16,.3
Package shape	RECTANGULAR
Package form	IN-LINE
Certification status	Not Qualified
surface mount	NO
Maximum switching frequency	800 kHz
technology	BIPOLAR
Temperature level	INDUSTRIAL
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL

BA9741A(16DIP) Preview

UTC BA9741A

LINEAR INTEGRATED CIRCUIT

TWO-CHANNEL SWITCHING

REGULATOR CONTORLLER

DESCRIPTION

The UTC BA9741A is a two-channel switching

regulator controllers that use the PWM method.

It can be used for DC to DC conversion for step-up,

step-down, and inverting. The IC comes in a compact

package, making it ideal for use in portable equipment.

SOP-16

FEATURES

*High-accuracy reference voltage circuit (±1%).

*Time-latch, short-circuit protection circuit.

*Miss-operation prevention circuit for low-voltage input

*Reference voltage with output (2.5V)

*Rest period adjustment is possible over the entire duty

*range.

TSSOP-16

APPLICATION

*DC/DC converters for video cameras and notebook

computers etc.

DIP-16

PIN CONFIGURATIONS

VREF

SCP

ERROR

AMPLIFIER 2

NON1

ERROR

AMPLIFIER 1

INV1

FB1

DT1

OUT1

GND

NON2

INV2

FB2

DT2

OUT2

Vcc

UTC

UNISONIC TECHNOLOGIES CO., LTD.

QW-R103-019,A

UTC BA9741A

PIN DESCRIPTIONS

PIN NO.

LINEAR INTEGRATED CIRCUIT

PIN NAME

NON1

INV1

FB1

DT1

OUT1

GND

Vcc

OUT2

DT2

FB2

INV2

NON2

SCP

VREF

External timing capacitor

External timing resistor

Positive input for error amplifier 1

Negative input for error amplifier 1

Error amplifier 1 output

Output 1 dead time/soft start setting

Output 1

Ground

Power supply

Output 2

Output 2 dead time / soft start setting

Error amplifier 2 output

Negative input for error amplifier 2

Positive input for error amplifier 2

Time latch setting

Reference voltage output (2.5V)

FUNCTOIN

BLOCK DIAGRAM

Vcc

Vref

Reference

Voltage

VREF 16

Triangle

Oscillator

7 OUT1

NON 1 3

INV 1 4

FB 1 5

NON 2 14

INV 2 13

FB 2 12

Err

Amp 1

SCP Comp

PWM Comp1

10 OUT2

Err

Amp 2

Vref

PWM Comp2

Vref

SCP 15

Timer

Latch

UVLO

DT1 DT2

GND

UTC

UNISONIC TECHNOLOGIES CO., LTD.

QW-R103-019,A

UTC BA9741A

PARAMETER

Power Supply Voltage

Power Dissipation (note 1)

SOP-16

DIP-16

Operating Temperature

Storage Temperature

Output Current

Output Voltage

LINEAR INTEGRATED CIRCUIT

SYMBOL

Vcc

500

650

Topr

Tstg

-40 to 85

-55 to 125

120(note 2)

°C

ABSOLUTE MAXIMUM RATINGS

( Ta=25°C )

VALUE

UNIT

Note 1: When mounted on 70mm*70mm*1.6mm glass epoxy board.

Reduced by 5.0mW,for each increase in Ta of 1°C over 25°C

Note 2: Should not exceed Pd and ASO values.

RECOMMENDED OPERATING CONDITIONS

( Ta=25°C )

PARAMETER

Power Supply Voltage

Output Current

Output Voltage

Error Amplifier Input Voltage

Timing Capacitor

Timing Resistor

Oscillator Frequency

SYMBOL

Vcc

OSC

MIN

3.6

TYP.

6.0

MAX

100

1.6

15000

800

UNIT

kΩ

kHz

0.3

100

5.1

ELECTRICAL CHARACTERISTICS

( TA=25°C ,V

=6V,UNLESS OTHERWISE NOTED.)

PARAMETER

REFERENCE VOLTAGE BLOCK

Output Voltage

Input Stability

Load Stability

TRIANGULAR WAVE OSCILLATOR

Oscillation Frequency

Frequency Deviation

PROTECTION CIRCUIT

Threshold Voltage

Standby Voltage

Latch Voltage

Source Current

Comparator Threshold Voltage

SYMBOL

Vref

DLI

DLO

Fosc

STB

SCP

TEST CONIDITIONS

Iref =1mA

Vcc =3.6~35V

Iref =0~5mA

=10 kΩ ,C

=220pF

Vcc=3.6~35V

MIN

2.4

TYP. MAX UNIT

2.5

2.6

480

kHz

1.80

100

3.5

1.2

2.15

1.64

µA

320

400

1.48

No pull up

1.5

5Pin,12Pin

Duty Cycle =0%

Duty Cycle =100%

0.9

1.79

1.32

1.64

2.5

1.05

1.97

1.48

REST PERIOD ADJUSTMENT CIRCUIT

Input Threshold Voltage

(fosc=10kHz)

t100

UTC

UNISONIC TECHNOLOGIES CO., LTD.

QW-R103-019,A

UTC BA9741A

PARAMETER

On Duty Cycle

Input Bias Current

Latch Mode Source Current

Latch Input Voltage

LINEAR INTEGRATED CIRCUIT

SYMBOL

BDT

TEST CONIDITIONS

Divide Vref using 13 kΩ and27 kΩ

DT1,DT2=2.0V

DT1,DT2=0V

=40µA

MIN

200

2.28

TYP. MAX UNIT

0.1

560

2.48

2.53

100

1.6

2.5

0.7

0.9

1.97

1.48

0.8

1.3

1.6

2.15

1.64

1.2

1.8

2.3

µA

LOW-VOLTAGE INPUT MISS-OPERATION PREVENTION CIRCUIT

Threshold Voltage

ERROR AMPLIFIER

Input Offset Voltage

Input Offset Current

Input Bias Current

Open Circuit Gain

Common-mode Input Voltage range

Common-mode Rejection Ratio

Maximum Output Voltage

Minimum Input Voltage

Output Sink Current

Output Source Current

PWM COMPARATOR

Input Threshold Voltage

(fosc=10kHz)

OUTPUT BLOCK

Saturation Voltage

Leak Current

TOTAL DEVICE

Standby Current

Average Current Consumption

VOM

CMRR

t100

SAT

REAK

Iccs

Icc

FB=1.25V

Duty Cycle =0%

Duty Cycle =100%

Io=75mA

Vo=35V

When output is off

=10 kΩ

1.79

1.32

Vcc=3.6~35V

0.3

2.3

TIMING CHART

Triangular wave output(from oscillator)

Error amplifier output

Dead-time input voltage

Short protection comparator

1.97V

1.05V

1.48V

PWM comparator output

Output waveform

1.64V

SCP waveform

Short protection comparator output

2.53V

Power supply voltage

Figure. 1

Vcc > 3.6V

Lockout release

tDT

UTC

UNISONIC TECHNOLOGIES CO., LTD.

QW-R103-019,A

UTC BA9741A

LINEAR INTEGRATED CIRCUIT

Figure 3. Swing Voltage vs. Frequency

2.2

2.0

=6V

RT1=10KΩ

Upper Voltage

ELECTRICAL CHARACTERISTIC CURVES

Figure 2. Reference Voltage vs.Ambient Temperature

2.0

=6V

1.5

Iref = -1mA

1.0

0.5

-0.5

-1.0

-1.5

-2.0

-40

-20

20 40 60 80

Ambient Temperature : Ta (℃)

100

1.2

10K

100K

Oscillator Frequency :fosc (Hz)

Swing Voltage :Vosc(V)

Reference Voltage Variation: Vref (%)

△

1.8

1.6

1.4

Lower Voltage

Figure4. Output Current vs.Output Saturation Voltage

1.2

Output Saturation Voltage: Vosat (V)

1.0

0.8

0.6

0.4

0.2

40 60 80 100 120 140

Output Current :Io (mA)

Figure 5. Error Amplifier AC Gain Characteristic (40dB close)

180

-10

-20

-30

-40

-50

100

-180

10K

100K

-90

Phase :θ(deg)

Gain :Av (dB)

Frequency :f (Hz)

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

UTC

UNISONIC TECHNOLOGIES CO., LTD.

QW-R103-019,A

More (Only the first 5 pages are displayed. Please Download Datasheet to view the full content.) >

Recommended Resources

Carbon dioxide gas sensor detection circuit

High quality preamplifier

Use NE555 to make automatic door-controlled lights at night

Homemade AA battery charger circuit

Ultrasonic atomizer circuit for bonsai

Hardware maintenance engineer: What do hardware maintenance engineers mainly do? I am preparing for the exam at school, but I don’t know what it is? Is it useful to take this exam?...; anglesccs Embedded System

What is assert_failed used for?: Does anyone know what the assert_failed function in STM32 is used for? Thank you...; 爱好汽车电子 MCU

Elevator Star Elevator Energy Saving Feedback, Energy Feedback Device, Elevator Energy Saving Renovation, IPC Elevator Room Cooling New Artifact: [align=left][b][color=maroon][font=宋体][size=26.0pt]1[/size][/font][/color][/b][b][color=maroon][font=宋体][size=26.0pt],[/size][/font][/color][/b][b][color=red][font=宋体][size=26.0pt]Elevator Star[/size]...; szipc88 Analogue and Mixed Signal

TI 10W Wireless Power Solution: [p=25, null, left][font=微软雅黑, arial][color=#000000]无线电源系统包括充电板（发送器或主设备）和接收器（次级侧设备）。充电板和接收器接触时，两个器件中的线圈通过磁力作用耦合。电力通过耦合的电感器（如空气磁芯变压器）从发送器传输至接收器。控制传输电量的方法是向主器件发送反馈通信（错误信号）以提高或降低电量。发送器线圈在大部分情况下都处于断电状态，只...; 灞波儿奔 Analogue and Mixed Signal

After installing ccs5.1, it cannot be opened: Hi everyone, my question is [b] after I installed it and set the default folder, why does it say an error has occurred and I can't open it? My path is in English and I'm really anxious. Please help me...; sbk100 Microcontroller MCU

Design of driving and impedance matching circuit for piezoelectric ultrasonic transducer: There is a serious impedance mismatch between the ultrasonic driving power supply and the ultrasonic transducer, resulting in low energy transmission efficiency between the two, and the transducer can...; bingzhi Analog electronics

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components