Sanyo LA5619M Specifications

Ordering number :ENN5673

22500RM (OT) No. 5673-1/8

Overview

The LA5619M is a single-chip IC that integrates a battery
voltage detection function and a lead battery charger to
support compact sets.

Functions

• Charge voltage can be switched between cycle voltage

and trickle voltage (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

[LA5619M]

LA5619M

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

Battery

max

6V
Allowable power dissipation Pd max 0.7 W
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

5.5 to 14.5 V

Battery pin voltage V

Battery

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

BAT

sink current I

BAT-LED

0 to 40 mA

Operating Conditions at Ta = 25°C

No. 5673-2/8

LA5619M

Parameter Symbol Conditions

Ratings

Unit

min typ max

[Charge System]

Charge voltage (when trickle is selected) V

O

1IO= 10 mA 4.4 4.6 4.7 V

Charge voltage (when cycle is selected) V

O

2IO= 50 mA 4.7 4.9 5.0 V

Differential charge voltage Vdif ∆V

O

= VO2– V

O1

0.2 0.3 0.4 V

Cycle → trickle switching current I

CT1

20 23 26 mA

Trickle → cycle switching current I

CT2

35 41 47 mA

Output peak current I

OP

RL= 33 Ω 112.5 125 137.5 mA

Line regulation (when trickle is selected) V

OLN1VCC

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

Line regulation (when cycle is selected) V

OLN2VCC

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

Load regulation (when trickle is selected) V

OLD1IO

= 0.5 to 30 mA 50 100 mV

Load regulation (when cycle is selected) V

OLD2IO

= 50 to 60 mA 100 150 mV

I

CC1IO

= 0 mA 6 10 mV

Current drain I

CC2IO

= 50 mA (I

CC2

includes IO) 65 73 mA

I

CC3RL

= 33 Ω (I

CC3

includes IO) 155 175 mA

CHG DET, OUT remaining voltage V

CHG-LEDIIN

= 40 mA 1.1 1.3 V

CHG DET, OUT leak voltage I

CHG-LEDVIN

= 9 V 200 nA

CHARGE detection current

I

CHG-DET1

on → off 0.15 0.25 0.35 mA

I

CHG-DET2

off → on 0.8 1.0 1.2 mA

VCC DET remaining voltage V

DETIIN

= 40 mA 1.1 1.3 V

VCC DET leak voltage I

DETVIN

= 9 V 200 nA

VCC DET detection voltage V

CC-DET

4.95 5.2 5.3 V

VCC DET hysteresis width

V

CC-DET, HYS

0.05 0.1 0.2 V

[Battery System]

Battery detection voltage V

Batt

3.17 3.3 3.43 V

V

Batt DET OUT1

pin’s remaining voltage

V

BAT-OUT1IIN

= 40 mA 0.3 0.5 V

V

Batt DET OUT1

pin’s leak current I

BAT-OUT1VIN

= 5 V 200 nA

Current drain when detection circuit is off

I

OFF

batt = 2.5 V 5 6 µA

Current drain when detection circuit is on

I

ON

No load 350 500 µA

Current drain during Battery SAVE I

SAVEVBatt CTRL

= 4 V 20 30 µA

V

Batt DET OUT2

pin’s remaining voltage

V

BAT-OUT2IIN

= 40 mA 1.1 1.3 V

[Internal Transistors for Reset]

REST OUT remaining voltage V

REST

REST.IN = 2 µA, IIN= 50 µA 0.3 0.5 V

REST OUT leak current I

RESTVIN

= 5 V 200 nA

[V

Batt CTRL

Pin]

Threshold voltage V

Batt-CTRL

1.10 1.27 1.50 V

V

Batt CTRL

pin input current I

Batt-CTRLVIN

= 4 V 17 24 µA

Operating Characteristics at Ta = 25°C, VCC= 9 V, Batt. IN = 4 V

Allowable power dissipation, Pd max — mW

Operating temperature, Ta — °C

Recommended
board mounting

Independent IC

Pin Assignment

Copper plating 180 mm

2

Board material: Paper phenol t = 1.5 mm

No. 5673-3/8

LA5619M

Battery Charger Charging Characteristics

Cycle charge

Current Drain Characteristics

Relationship between Reset and Battery Circuit

The V

Batt

circuit operates at the edge
where the reset voltage becomes Hi.
(At this time, the output transistors are
set on and the load is put on; If this
voltage is 3.3 [V] or higher, the V

Batt

circuit operates, and if it is lower than

3.3 [V], it does not start up.

Current limiting with current limiter

Charge current characteristics

Charge voltage characteristics

Detects charge current of 23 mA
and switches charge voltage
from 4.9 V to 4.6 V
* Charge current is variable

Trickle charge

Charging time

Charge current

Battery pin voltage

(+Vbat circuit current)

Reset on
Batt SAVE on current

Reset off current

(+reset circuit current)

Battery
voltage

Rest voltage 2.8 [V]

3.3 [V] or higher