L6727 datasheet(4/22 Pages) STMICROELECTRONICS

部件名	L6727

功能描述	Single phase PWM controller

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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4 / 22 page

Typical application circuit and block diagram

L6727

4/22

1

Typical application circuit and block diagram

1.1

Application circuit

Figure 1.

Typical application circuit

1.2

Block diagram

Figure 2.

Block diagram

HS

LS

VIN = 1.5V to 19V (**)

L

COUT

Vout

LOAD

CHF

CBULK

RD

CSN

RSN

CBOOT

RgHS

RgLS

D

1

2

8

BOOT

UGATE

PHASE

LGATE

4

CDEC

FB

6

RFB

COMP /

DIS / OC

7

RF

CF

CP

GND

VCC

ROS

VCC = 5V to 12V

ROCSET

(*)

5

3

L6727 Reference Schematic

(*) ROCSET not to be connected when VCC > 5V

(**) Up to 12V with Vcc > 5V

BOOT

LGATE

UGATE

GND

HS

LS

VCC

ERROR

AMPLIFIER

+

-

0.8V

300 kHz

OSCILLATOR

PWM

PHASE

CONTROL LOGIC

& PROTECTIONS

CURRENT READ

& OCP

DISABLE

L6727

类似零件编号 - L6727

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STMicroelectronics	L6727	980Kb / 34P	Single phase PWM controller
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	L6727	980Kb / 34P	Single phase PWM controller

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