Datasheet > UCQ3738

UCQ3738

更新时间： 2023-12-06 20:08:41

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
10页	361K
描述
low cost power-saving mode pwm controller for...

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数据手册

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UCQ3738 数据手册

UCQ3738

Preliminary

CMOS IC



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

-0.3 ~ 32

-0.3 ~ V_CC+0.3

-0.3 ~ 6

UNIT

Supply Voltage

V_CC

Input Voltage to OUT Pin

FB, CS, DEM

V_OUT

Power Dissipation (T_A=25°C)

Junction Temperature

P_D

T_J

400

°C

+150

Operating Ambient Temperature

Storage Temperature Range

T_OPR

T_STG

-40 ~ +85

-65 ~ +150

Note: 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.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

V_CC

RATINGS

9 ~ 30

UNIT

Supply Voltage

Start up Resistor

V_CCCapacitor

0.86 ~ 4.4

2.2 ~ 4.7

MΩ

μF



THERMAL DATA

PARAMETER

SYMBOL

θ_JA

RATING

250

UNIT

°C/W

Junction to Ambient



ELECTRICAL CHARACTERISTICS (V_CC=15V, T_A=25°C, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

SUPPLY VOLTAGE

V_CC(ON)

V_CC(MIN)

I_STR

7.6

8.6

V_CC(OFF)

6.6

Startup Current

V_CC<V_CC(ON)-0.5V

μA

V_FB=2.2V

2.5

Operating Current

V_CCOVP Threshold

I_OP

V_FB=Burst Level

V_FB=2.2V

0.23

V_CC(OVP)

OSCILLATOR & SWITCHING FREQUENCY

Normal mode Switching Frequency

Temperature Stability

F_(SW)

V_FB=2.5V

KHz

F_DT

F_DV

Guaranteed by Design

Voltage Stability

Green Mode Frequency

Frequency Spreading Range

Max. Duty Cycle

F_{(SW_GR)}

ΔOSC

DC_MAX

KHz

V_FB=2.2V

-9

V_FB=2.2V, V_CS=0V

Internal Soft Start Time

T_SS

Guaranteed by Design

VOLTAGE FEEDBACK

Open Loop Voltage

V_{FB_Open}

V_{FB_OLP}

T_{D_OLP}

3.3

2.6

OLP Level

OLP De-Bounce Time

Burst-Mode Enter FB Voltage

Burst-Mode Quit FB Voltage

FB Pin Short Current

V_FB>5V

V_FB-IN

0.82

0.88

V_FB-OUT

I_{FB_SHORT}

μA

UNISONIC TECHNOLOGIES CO., LTD

4 of 10

QW-R502-D71.b

www.unisonic.com.tw

1 2 345 6 7...10

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