LA5648 datasheet, PDF - EEWORLD Datasheet

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LA5648: DescriptionPower Supply Support Circuit, Fixed, 1 Channel, 0.300 INCH, DIP-8; CategoryPower/power management The power supply circuit; File Size73KB，5 Pages; ManufacturerSANYO; Websitehttp://www.semic.sanyo.co.jp/english/index-e.html

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LA5648 Overview

Power Supply Support Circuit, Fixed, 1 Channel, 0.300 INCH, DIP-8

LA5648 Parametric

Parameter Name	Attribute value
Maker	SANYO
Parts packaging code	DIP
package instruction	DIP, DIP8,.3
Contacts	8
Reach Compliance Code	unknown
ECCN code	EAR99
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-XDIP-T8
length	9.14 mm
Number of channels	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-30 °C
Package body material	UNSPECIFIED
encapsulated code	DIP
Encapsulate equivalent code	DIP8,.3
Package shape	RECTANGULAR
Package form	IN-LINE
power supply	5 V
Certification status	Not Qualified
Maximum seat height	3.9 mm
Maximum supply current (Isup)	10 mA
Maximum supply voltage (Vsup)	26.4 V
Minimum supply voltage (Vsup)	5 V
Nominal supply voltage (Vsup)	5 V
surface mount	NO
Temperature level	OTHER
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
width	7.62 mm

LA5648 Preview

Ordering number : ENA0921

LA5648

Overview

Monolithic Linear IC

RCC Power Supply Controller

The LA5648 is a controller IC for RCC power supply systems.

Features

•

RCC power supply controller

•

Overcurrent detection function

•

Soft start function

•

Built-in UVLO circuit

•

Output overcurrent protection timer function

•

Base winding voltage detection function

Specifications

Absolute Maximum Ratings

at Ta = 25°C

Parameter

Maximum supply voltage

Output peak current

Allowable pin voltages

OUT

SYC

VPC

OCL

Symbol

VCC max

IOUT

VOUT

VSYC

VPC

VCF

OCL

Pd max

Topr

Tstg

-900mA to +900mA

-2mA to +4mA

-600μA to +1mA

-50μA to +5mA

-15μA to +500μA

-60μA to 0μA

Ta = 25°C

Conditions

Ratings

±0.9

0 to VCC

-0.3 to +2.5

-0.2 to +3.5

0.6

-30 to +85

-55 to +150

Unit

°C

Allowable power dissipation

Operating temperature

Storage temperature

* Voltages are referenced to the COM pin. The polarity of a current that flows out of the IC is regarded as negative (minus).

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

device, the customer should always evaluate and test devices mounted in the customer

s products or

equipment.

O1707 MS PC 20070801-S00001 No.A0921-1/5

LA5648

Recommended Operating Conditions

at Ta

25°C

Parameter

Supply voltage

Symbol

VCC

Conditions

After UVLO release*

Ratings

5.0 to 26.4

Unit

* : When VCC is increasing, UVLO is released at 11V. When VCC is decreasing, UVLO operates at 3V.

Electrical Characteristics

at Ta

25°C, VCC = 5.0V

Parameter

Current dissipation 1

Current dissipation 2

Output saturation characteristics

(H1)

Output saturation characteristics

(H2)

Output saturation characteristics

(L1)

Output saturation characteristics

(L2)

Output peak current (source)

Output peak current (sink)

Output rise time

Output fall time

OCL1 sensitivity

OCL1 sensitivity temperature

characteristics

OCL1 response time

OCL1 source current

Maximum time ratio

σmax

pin voltage

σmax

source current

σmax

pin voltage

σmax

source current

Control sensitivity

Timer charging start current

Protection time ratio

SYC source current (Hi)

SYC source current (Lo)

SYC sensitivity (Hi)

SYC sensitivity (Lo)

SYC sensitivity temperature

characteristics

SYC clamp voltage (H)

SYC clamp voltage (L)

CF current when SYC operating

Oscillation frequency

Oscillation frequency voltage

characteristics

Oscillation frequency

temperature characteristics

Oscillation waveform upper limit

voltage

Oscillation waveform lower limit

voltage

Continued on next page.

VOSCL

When the external capacitor of 1500pF is used.

0.75

0.89

1.00

VOSCH

When the external capacitor of 1500pF is used.

1.92

2.03

2.17

KOSC

* design guarantee value

250

PPM/°C

VSCLMH

VSCLML

IOSCoff

fOSC

KOSCV

When the external capacitor of 1500pF is used

0.65

-0.60

-2

15.8

0.75

-0.38

17.5

0.85

-0.25

19.3

μA

kHz

Hz/V

tOCL1

IOCL1

σMAX

VPCσMAX

IPCσMAX

VPCσ0

IPCσ0

KPCσ

IPClim

σlim

ISYC (Hi)

ISYC (Lo)

VthSYC (Hi)

VthSYC (Lo)

KthSYC

Including external 20kΩ

* design guarantee value

When the external capacitor of 1500pF is used.

-45

1.65

-300

0.500

-490

113

-18

-12

-0.22

-0.34

1000

-31

1.82

-200

0.540

-350

-15

-10

-0.19

-0.28

500

3000

-20

2.10

-120

0.660

-240

-12

-8

-0.16

-0.21

μA

%/V

μA

PPM/°C

IOUT_PH

IOUT_PL

VthOCL1

KOCL1

design guarantee value value*

Tj = 0 to 100°C, Vce = 30V,

design guarantee value value*

Tj = 0 to 100°C, Vce = 30V,

design guarantee value value*

0.180

1000

0.200

600

3000

0.220

PPM/°C

700

-350

VsatL2

IOUT = 10mA

0.2

0.4

VsatL1

IOUT = 150mA

1.50

1.80

VsatH2

IOUT = -10mA

2.1

2.5

Symbol

ICC1

ICC2

VsatH1

When stopped

When in 18kHz continuous oscillation mode.

With a 50Ω resistor and a 1μF capacitor

IOUT = -150mA

2.4

2.8

Conditions

min

Ratings

typ

3.8

6.4

max

Unit

No.A0921-2/5

LA5648

Continued from preceding page.

Parameter

Timer charge current

Timer discharge current

Timer sensitivity voltage

UVLO release voltage

UVLO operating voltage

Symbol

ICTCHG

ICTDCHG

VCT_H

VUVLO_H

VUVLO_L

VCT = 1V

Conditions

min

-9.0

1.25

9.5

2.5

Ratings

typ

-6.0

1.31

10.3

3.3

max

-4.0

1.37

11.0

4.0

μA

Unit

* : The temperature characteristics within a range of -30°C to +150°C are design guarantee values.

Package Dimensions

unit : mm (typ)

3001D

0.8

Pd max -- Ta

9.14

Allowable power dissipation, Pd max – W

0.6

Independent IC

7.62

6.4

0.4

0.31

0.2

1.0

3.9MAX

(3.0)

1.4

0.25

–

80 85

100

3.2

Ambient temperature, Ta – °C

0.51MIN

(0.76)

2.54

0.5

SANYO : DIP8(300mil)

Pin Assignment

VCC 1

8 OCL

LA5648

Top view

OUT 2

COM 3

SYC 4

7 CT

6 CF

5 VPC

No.A0921-3/5

LA5648

Pin Description

Pin No.

Pin Name

VCC

OUT

COM

SYC

Power pin

Output pin. Connected to an external MOS-FET gate.

Common potential or ground

Sync signal input pin. Base winding voltage is input. If this voltage is negative, the internal triangular wave oscillator

stops and output is set low. The oscillator and output turn on at the timing when the voltage switches from negative to

positive. Fixing this pin at a positive voltage causes the oscillator to run continually, enabling operation using the

external excitation.

VPC

Control signal input pin. The secondary side output voltage data is sent to this pin via a photo coupler. Internal PWM

comparator input. The output on time gets shorter as the input voltage lowers. The output on time is fixed when a

voltage higher than a certain level is applied. The timer also starts operation.

OCL

Oscillation capacitor connection pin.

Timer capacitor connection pin. Charging operation starts when the VPC voltage gets higher than a certain level.

Output is stopped when the CT pin voltage becomes higher than a certain level.

Overcurrent detection pin. Connected to the source voltage of the external MOS-FET. The output is stopped by

triggering the internal FF. The internal FF is reset by the SYC pin voltage on a pulse by pulse basis.

Description

Block Diagram

VCC

1.2V Vref

3.5V Vref

UVLO

TRIANG OSC

OUT

LOGIC

PWM COMP

VPC

COM

TIMER

SYC

OCL

No.A0921-4/5

LA5648

Sample Application Circuit

140V

OUT

VCC

LA5648

OCL

VPC

COM

SYC

R10

SANYO Semiconductor Co.,Ltd. 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 SANYO Semiconductor Co.,Ltd.

products described or contained herein.

SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all

semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or

malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise

to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt

safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not

limited to protective circuits and error prevention circuits for safe design, redundant design, and structural

design.

In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are

controlled under any of applicable local export control laws and regulations, such products may require the

export license from the authorities concerned in accordance with the above law.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,

without the prior written consent of SANYO Semiconductor Co.,Ltd.

Any and all information described or contained herein are subject to change without notice due to

product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the

SANYO Semiconductor Co.,Ltd. product that you intend to use.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed

for volume production.

Upon using the technical information or products described herein, neither warranty nor license shall be granted

with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third

party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's

intellctual property rights which has resulted from the use of the technical information and products mentioned

above.

This catalog provides information as of October, 2007. Specifications and information herein are subject

to change without notice.

PS No.A0921-5/5

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