Sanyo LA5645M Specifications

Ordering number : ENN6489

83000RM (OT) No. 6489-1/5

Overview

The LA5645M is a constant-voltage/constant-current control IC that incorporates low-voltage operational amplifiers and a high-precision reference voltage circuit (V

REF

= 1.5 V ±1.0%). This device is optimal for use as a secondary side controller in battery chargers, switching regulators, and similar products.

Features

• Operating supply voltage: 2.5 to 14 V

• High-precision reference voltage: 1.5 V ±1.0%

• PC pin current: 60 mA (max)

• Current drain: 3 mA (max)

• Input offset voltage: 2 mV (max)

Package Dimensions

unit: mm

3032B-MFP8

1

8

4

5

0.6451.270.35

5.1

0.15

1.8max

1.50.1

0.625

4.4

5.15

6.4

SANYO: MFP8

[LA5645M]

LA5645M

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Constant-Voltage/Constant-Current Control IC

Monolithic Linear IC

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO 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 products described or contained herein.

Parameter Symbol Conditions Ratings Unit

Supply voltage V

CC

max 14.5 V

Differential input voltage V

ID

max 14.5 V

PC pin current I

PC

max 60 mA

Allowable power dissipation Pd max

Independent IC 300 mW

Mounted on the specified printed circuit board* 800 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –50 to +150 °C

Note: * Specified printed circuit board: 76.1 × 114.3 × 1.6 mm3, glass epoxy board.

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage Vopr 2.5 to 14 V

Operating Conditions at Ta = 25°C

No. 6489-2/5

LA5645M

0.2

0.0

0.3

0.4

0.6

0.8

1.0

–20 0 20 40 60 80 100

Pd max — Ta

0.16

0.41

Parameter Symbol Conditions

Ratings

Unit

min typ max

Current drain I

CC

IPC= OFF 1 3 mA

Leakage current I

PC

LEAK VCC= VPC= 14 V 100 µA

Saturation voltage V

PC

(sat) IPC= 50 mA 0.5 0.7 V

Reference voltage V

REFIREF

= 0 mA 1485 1500 1515 mV

Reference voltage regulation

∆V

REF

/∆I

REFIREF

= 0 to 5 mA 30 mV

[Amplifier Block] (Characteristics common to both channels A and B)

Input offset voltage V

IO

0.5 2 mV

Input offset current I

IO

5 50 nA

Input bias current I

B

80 250 nA

Voltage gain A

V

Open loop gain (design guarantee*) 80 dB

Common-mode input voltage range

V

ICM

0 VCC– 2 V Slew rate SR Design guarantee* 0.8 V/µs Gain-bandwidth product GB Design guarantee* 2 MHz

Electrical Characteristics at Ta = 25°C, VCC= 5 V

Note: * Design guarantee value. These parameters are not measured.

Allowable power dissipation, Pdmax — W

Ambient temperature, Ta — °C

Mounted on the specified printed circuit board

Independent IC

Board size: 76.1 × 114.3 × 1.6 mm

3

Board material: glass epoxy

Pin Assignment

1PC

A–INPUT

A+INPUT

GND

8

2

A

+

–

7

V

REF

3 6

4 5 B+INPUT

B–INPUT

V

REF

V

CC

B

–

+

A13183

No. 6489-3/5

LA5645M

600

400

800

1000

1200

–50 0 50 100 150 0 5 10 15

200

0

400

600

800

1000

1200

1.2

1.0

1.4

1.6

1.8

2.0

0 10 20 30

1.30

1.35

1.25

1.40

1.45

1.50

1.55

0 5 10 15

–3

–2

–1

0

1

2

3

–50 0 50 100 150

1.490

1.488

1.486

1.492

1.494

1.496

1.498

1.500

–50 0 50 100 150

V

REF

— I

REF

ICC — Ta ICC — V

CC

V

REF

— V

CC

VIO — Ta

V

REF

— Ta

Channel A offset

Channel B offset

V

CC

= 5 V

V

CC

= 5 V

V

CC

= 5 V V

CC

= 5 V

Ta = 25 °C

Current drain, I

CC

— µA

Current drain, I

CC

— µA

Ambient temperature, Ta — °C

Supply voltage, V

CC

— °C

Reference voltage, V

REF

— VInput offset voltage, V

IO

— mV

Reference voltage, V

REF

— VReference voltage, V

REF

— V

Pin 7 output current, I

REF

— mA

Supply voltage, V

CC

— V

Ambient temperature, Ta — °C

30

40

70

20

50

60

80

90

100

–50 0 50 100 150 –50 0 50 100 150

–8

–6

–4

–2

0

2

4

6

8

–20

–40

0

20

40

60

80

100

–180

0

180

–180

0

180

–20

–40

0

20

40

60

80

100

1k

2 3 5 7 2 3 5 7 2 3 5 7

1M 10M

2 3 5 7

10k 100k 1k

2 3 5 7 2 3 5 7 2 3 5 7

1M 10M

2 3 5 7

10k 100k

Channel B

Channel A

Channel B

Channel A

IB — Ta IIO — Ta

V

CC

= 5 V

Ta = 25 °C Channel A Amp

100 kΩ/1 kΩ

V

CC

= 5 V

Ta = 25 °C Channel B Amp

100 kΩ/1 kΩ

Phase

Gain

V

CC

= 5 V V

CC

= 5 V

No. 6489-4/5

LA5645M

0

100

200

300

400

500

600

–50

0

50 100

VPC(sat) — TaVPC(sat) — I

PC

100

50

0

150

200

250

300

350

0 20 40 60 80

V

CC

= 5 V

I

PC

= 50 mA

V

CC

= 5 V

Ta = 25 °C

Output saturation voltage, V

PC

(sat) — mV

Input bias current, I

B

— nA

Output saturation voltage, V

PC

(sat) — mV

Input offset current, I

IO

— nA

Pin PC current, IPC— mA

Ambient temperature, Ta — °C

Voltage gain, V

G

— dB

Voltage gain, V

G

— dB

Frequency, f — Hz

External resistor ratio External resistor ratio

Channel A Voltage Gain and Phase vs. Frequency

Channel B Voltage Gain and Phase vs. Frequency

Phase, ø — degrees

PS No. 6489-5/5

LA5645M

Sample Application Circuit

This catalog provides information as of August, 2000. Specifications and information herein are subject to change without notice.

Specifications of any and all SANYO 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.

SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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 products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission of SANYO Electric 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 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. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.

+

PC (PHOTO COUPLER)

R1 R3

V

I

CONTROL IC

PC

R2

R4

R

SC

8

–

2

A

+

3

4

1

+

5

B

–

6

V

=1.5V±1%

REF

LA5645M

7

R5

Battery

R6

A13184