Sanyo LA5615M Specifications

Ordering number :ENN5285

22500RM (OT) No. 5285-1/7

Overview

The LA5615M is an IC that integrates a battery voltage
detection and lead battery charger on a single chip that
supports compact sets.

Functions and Features

• Charge voltage can be switched between cycle charge

and trickle charge (4.9 V typ. → 4.6 V typ.).

• Charge current limit can be set with an external resistor
(125 mA typ.).

• Built-in charge current detection circuit

• Built-in battery voltage detection circuit

Package Dimensions

unit: mm

3097-MFP16FS

1

16

8

9

0.15

0.6251.35

0.35

1.0

2.8

12.6

5.4

1.8max

1.5

0.1

6.35

7.6

0.625

[LA5615M]

LA5615M

SANYO Electric Co.,Ltd. Semiconductor Company

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

Lead Battery Charger IC

with Battery Voltage Detection Function

Monolithic linear IC

SANYO: MFP16FS

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 15 V

Battery pin voltage

V

Batt

max

6V
Allowable power dissipation Pd max 0.7 mW
Operating temperature Topr –20 to +80 °C
Storage temperature Tstg –30 to +125 °C

Specifications

Maximum Rating at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Supply voltage V

CC

6.15 to 14.5 V

Battery pin voltage V

Batt IN

0 to 5.5 V

CHARGE LED sink current I

CHG-LED

0 to 40 mA

DET LED sink current I

DET-LED

0 to 40 mA

V

Batt

sink current I

Batt-LED

0 to 40 mA

Operating Conditions at Ta = 25°C

No. 5285-2/7

LA5615M

Parameter Symbol Conditions

Ratings

Unit

min typ max

[Charge System]

Charge voltage (when trickle is selected) V

O

1IO= 10 mA 4.45 4.6 4.75 V

Charge voltage (when cycle is selected) V

O

2IO= 50 mA 4.75 4.9 5.05 V

Differential voltage of V

O

2 and VO1 ∆VO∆VO= VO2 – VO1 0.2 0.3 0.4 V

Cycle trickle switching current I

CT

34 40 46 mA

Output peak current I

OP

RL= 33 Ω 112.5 125 137.5 mA

Line regulation (when trickle is selected) V

OLN

1VCC= 8 to 14.5 V, IO= 10 mA 50 100 mV

Line regulation (when cycle is selected) V

OLN

2VCC= 8 to 14.5 V, IO= 50 mA 100 150 mV

Load regulation (when trickle is selected) V

OLD

1IO= 0.5 to 30 mA 50 100 mV

Load regulation (when cycle is selected) V

OLD

2IO= 50 to 60 mA 100 150 mV

Current drain

I

Q

1IO= 0 mA 6 10 mV

I

Q

2IO= 50 mA 13 21 mA

CHARGE LED residual voltage V

CHG-LEDIIN

= 40 mA 1.1 1.3 V

CHARGE LED leak current I

CHG-LEDVIN

= 9 V 200 nA

CHARGE detection current I

CHARGED

0.8 1 1.2 mA

DET LED residual voltage V

DETIIN

= 40 mA 1.1 1.3 V

DET LED leak current I

DETVIN

= 9 V 200 nA

POWER DET detection voltage V

DET-IN

5.85 6.05 6.15 V

POWER DET hysteresis width V

DET-HYS

0.1 0.2 0.3 V

[Battery Detection System]

Battery detection voltage V

Batt

3.17 3.3 3.43 V

V

BAT

pin residual voltage V

BATIIN

= 40 mA 0.3 0.5 V

V

BAT

pin leak current I

BAT

VIN= 5 V 200 nA

Current drain

I

OFFVBatt

= 2.5 V 5 6 µA

when detection circuit is OFF
Current drain

I

ON

No load 350 500 µA

when detection circuit is ON

Current drain during Battery SAVE I

SAVEVBatt

. SAVE = 4 V 20 30 µA

Battery B residual voltage V

BAT

.B IIN= 40 mA 1.1 1.3 V

[Internal transistors for reset]

REST residual voltage V

REST

REST.IN = 2 µA, IIN= 50 µA 0.3 0.5 V

REST leak current I

RESTVIN

= 5 V 200 nA

[Internal transistors for reset]

Threshold voltage V

SAVE

.TH. 1.1 1.27 1.5 V

SAVE pin input current I

SAVE.

.IN VIN= 4 V 17 24 µA

Electrical Characteristics at Ta = 25°C, VCC= 9 V = V

Batt IN

= 4 V

No. 5285-3/7

LA5615M

Pin Assignment

Allowable power dissipation, Pd max — mW

Operating temperature, Ta — °C

Recommended
board mounting

Independent IC

Recommended Board

Copper plating 180 mm

2

Board material: Paper phenol t = 1.5 mm