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Ordering number :ENN5238
Monolithic Linear IC
LA5614M
Charging IC for Nickel – Cadmium and Nickel Metal
Hydride Batteries
Functions and Features
• Ideally suited for charging systems that use a
microcontroller due to charge voltage detection.
• Cycle charge/trickle charge switching.
• Change current can be set with external resistor.
Package Dimensions
unit: mm
3086A-MFP10S
[LA5614M]
10 6
1
5.1
5
0.15
Specifications
Maximum Rating at Ta = 25°C
Parameter
Maximum supply voltage
VCONT input voltage
BIN pin voltage
ON/OFF pin voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
VCONT max
VBIN max
VON/OFF max
Pd max
Independent IC
Topr
Tstg
Operating Conditions at Ta = 25°C
Parameter
Supply voltage
VCONT voltage
Base output current
Trickle sink current
Symbol
VCC
VCONT
IBASE
ISINK
0.35 1.0 0.55
Conditions
Conditions
SANYO: MFP10S
Ratings
9
9
9
5
250
–20 to +80
–30 to +125
Unit
V
V
V
V
mW
°C
°C
Ratings
6 ±0.3
6 ±0.3
0 to 14
0 to 50
Unit
V
V
mA
mA
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22900RM (OT) No. 5238-1/5

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LA5614M
Electrical Characteristics at Ta = 25°C, VCC = VCONT = 6 V in specified test circuit
Parameter
Quiescent current
Base output current
VCONT ON voltage
ON/OFF control OFF voltage
Trickle sink current
[OUT pin block]
Rise offset voltage
Output "L" level voltage
Output "H" level voltage
Output gain
Symbol
Conditions
ICC
IB
VC
VOFF
ISINK
VCONT = 0 [V]
VON = 0 [V], 27 resistor between ITR and GND
VBAT = 4.2 [V]
min
10
0.6
VOOS
VOL
VOH
VOG
0 V VBAT < 3.6 V
VBAT = VCC
3.4
0
0.8VCC
8.0
Ratings
typ
14
1.2
1.0
50
3.6
0.05
9.5
max
10
18
3.4
1.5
60
3.8
0.1VCC
VCC
11.0
Unit
µA
mA
V
V
mA
V
V
V
dB
Pd max — Ta
Ambient temperature, Ta — °C
Pin Assignment
No. 5238-2/5

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Pin Functions
Pin No.
1
Pin name
VCC
LA5614M
Function
External power supply pin
2
ITR
Trickle sink current setting pin
Connect a resistor between GND and this pin
3
BIN
Secondary battery negative electrode and external NPN
transistor collector connection pin
4
Base
External NPN transistor base connection pin
5
Emitter
External NPN transistor emitter and cycle charge
current detection resistor connection pin
6
GND
MIN. potential of this IC
Charge voltage detection output pin
7
OUT
Offset voltage: 3.6 V
Output gain × 3
(when 3.6 V < VBAT < VCC, 3 VBAT is output)
Pin that switches between cycle charge and trickle
8
ON/OFF
charge
Open: Cycle
"L": Trickle
Pin for setting cycle charge current
Connection of resistor between (9) and GND:
9 ISET Small charge current
Connection of resistor between (9) and (8):
Large charge current
Equivalent circuit
10
VCONT
Pin that controls ON/OFF operation of this pin.
"H": ON
No. 5238-3/5

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Test Circuit
LA5614M
Equivalent Circuit Block Diagram and Peripheral Circuit Example (Values are reference values)
Microcontroller
Nickel – cadmium or nickel
metal hydride secondary
battery (3 cells)
2SD1623 or
equivalent product
Cycle charge current
detection resistor
Trickle charge
current setting
resistor
Microcontroller
Application Cautions
The charging conditions of the secondary battery to be used must be set according to the battery specifications.
No. 5238-4/5

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LA5614M
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.
This catalog provides information as of February, 2000. Specifications and information herein are subject
to change without notice.
PS No. 5238-5/5