Datasheet > UP7706ADC8

UP7706ADC8

更新时间： 2022-06-24 15:43:26

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
12页	369K
描述
3A Ultra Low Dropout Linear Regulator

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UP7706ADC8 数据手册

uP7706

Functional Pin Description

Pin No. Name Pin Function

Power OK Indication. This pin is an open-drain output and is set high impedance once V_OUT

POK

reaches 92% of its rating voltage.

Enable Input. Pulling this pin below 0.8V turns the regulator off, reducing the quiescent current

to a fraction of its operating value.

Input Voltage. This is the drain input to the power device that supply current to the output pin.

Large bulk capacitors with low ESR should be placed physically close to this pin o prevent the

input rail from dropping during large load transient. A 10uF ceramic capacitor is recommended

at this pin.

VIN

Supply Input for Control Circuit. This pin provides bias voltage to the control circuitry and

driver for the pass transistor.The driving capability of output current is proportioned to the V_CNTL

CNTL

For the device to regulate, the voltage on this pin must be at least 1.5V greater than the output

voltage, and no less than V_{CNTL_MIN.}

Not Internally Connected.

Output Voltage. This pin is power output of the device. A pull low resistance exists when the

device is disabled by pulling low the EN pin. To maintain adequate transient response to large

load change, typical value of 1000uF Al electrolytic capacitor with 10uF ceramic capacitors are

recommended to reduce the effects of current transients on VOUT.

VOUT

Feedback Voltage. This pin is the inverting input to the error amplifier. A resistor divider from

the output to GND is used to set the regulation voltage as V_OUT= 0.8x(R1+R2)/R1 (V)

Ground.

GND

Exposed

Pad

Ground. The exposed pad acts the dominant power dissipation path and should be soldered

to well design PCB pads as described in the Application Informations Chapter.

Functional Block Diagram

CNTL

VIN

Power On

Reset

Thermal Limit

0.3V

Softstart &

Control Logic

Current Limit

0.8V V_REF

Delay

92% V_REF

POK

GND

uPI Semiconductor Corp., http://www.upi-semi.com

Rev. F00, File Name: uP7706-DS-F0000

123 4 5 6 7...12

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