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