View LA5621V_228295.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Ordering number :EN5640A
Monolithic linear IC
LA5621M, 5621V
Lithium-Ion Battery Charge Control IC
Overview
The LA5621M and LA5621V are external charge control ICs for lithium-ion batteries. These ICs are ideally suited for on/off control of external power MOSFETs in systems that incorporate a charging circuit in the set. They detect the charge and discharge status, output it to the set control microcontroller, which then outputs a signal to switch external power MOSFETS either on or off. Moreover, these ICs have a built-in function that detects discharge (countercurrent) from lithium-ion batteries within sets to external lithium-ion batteries in an AC adapter/charger, etc. and switches external power MOSFETs off.
* Countercurrent detection and control: In systems that support charging of both the set of the video camera, etc., and the AC adapter/charger, when spare batteries are charged on the AC adapter/charger side, if the battery voltage on the set side becomes high when the set is connected to the AC adapter/charger, current flows out to the battery on the AC adapter/charger side. These ICs feature a function that prevents this from happening. * Charge prevention: A specified voltage is applied to the CHARGEINH pin to stop charging.
Features
* The combination of a microcontroller and external power MOSFETs enables easy charge/discharge control of lithium-ion batteries. * Small power dissipation makes these ICs suitable for sets that require long time operation * Use of compact package makes these ICs suitable for compact sets. * Large power supply operation range supports both 1-cell and 2-cell lithium-ion batteries.
Application
* Charge control of 1- or 2-cell lithium-ion batteries of video cameras, digital still cameras, cellular telephones, etc., used in combination with a microcontroller.
Functions
* Charge/discharge: In charge/discharge mode, switch external power MOSFETs on to charge the battery or discharge it to set load. * Charge detection: Detect the charge status of lithium-ion batteries with comparator. * Charge completion control: When charging of the lithium-ion battery is completed, the comparator is activated and the external power MOSFETs are switched off to stop charging.
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
31000RM (OT) No. 5640-1/6
LA5621M, 5621V
Package Dimensions
unit: mm 3034A-MFP14
0.625
unit: mm 3178-SSOP16
1.0 0.15 Ratings 11 LA5621M LA5621V 320 250 -20 to +75 -55 to +125 0.5
1.8max
[LA5621M]
14 8
[LA5621V]
16 9
5.15 6.4
4.4
1
10.1
7
5.4 0.1
0.1
1.5
0.35
1.27
1.24
SANYO: MFP14
0.22
0.65
0.43
1.6max
0.15
1
8
Specifications
Maximum Rating at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Conditions Unit V mW mW C C
Allowable Operating Conditions at Ta = 25C
Parameter Supply voltage 1 Supply voltage 2 Symbol VCC1 VCC2 VCC1 VCC2 VCC1 VCC2* Conditions Ratings 1 to 11 2 to 5.5 Unit V V
Note: * When VCC1 < 2 V, only the gate block (external power MOSFET drive) operates.
Electrical Characteristics at Ta = 25C, VCC1 = 5.5 V, VCC2 = 3.15 V (unless otherwise specified)
Parameter Current drain 1-1 (During set operation discharge) Current drain 2-1 (During set operation discharge) Current drain 1-2 (During charging outside set) Current drain 2-2 (During charging) [Output pin block] High-level CPU pin Low-level CPU pin CPU pin sink current High-level BIAS1 pin High-level BIAS2 pin Low-level BIAS2 pin leak current VCPU-H VCPU-L VCPU-SINK VIN1- = 15 mV, VIN1+ = 11 mV, VCHG = VCC2, SW4: off, SW5: on VIN = 15 mV, = 23 mV, VCHG = VCC2, SW4: off, SW5: on VIN1- = 15 mV, VIN1+ = 23 mV, VCHG = VCC2, SW4: off, SW5: on VCC2 - 0.15 VCC2 - 0.15 10 35 1- VIN1+ VCC2 - 0.15 0.2 V V A V V A Symbol ICC1-1 ICC2-1 ICC1-2 ICC2-2 Conditions VCC1 in current, VCHG = VCC2, SW4, 6: on, SW5: off VCC2 in current, VCHG = VCC2, SW4, 6: on, SW5: off VCC2 in current, VCHG = VCC2, SW4, 5: on VCC2 in current SW5: on, VCPU: L, VGATE:H Ratings min typ 90 20 20 600 max 120 26 26 800 Unit A A A A
VBIAS1-H SW1, 2, 5, 6: on SW1, 2, 5, 6: on, VIN2- = 15 mV, VBIAS2-H VIN2+ = 11 mV IBIAS2-LK SW1, 2, 5, 6: on, VIN1- = 15 mV, VIN1+ = 23 mV
Continued on next page.
6.4
4.4
SANYO: SSOP16
No. 5640-2/6
LA5621M, 5621V
Continued from preceding page.
Parameter [FET drive block] Drive high-level voltage Drive low-level voltage [Comparator block] SW1, 2, 5, 6: on Input offset voltage 1 Input offset voltage 2 Input offset voltage 3 Input offset current Input bias current In-phase input voltage range Input current during negative voltage application VIO1 VIO2 VIO3 IIO IIB VICR ILIM VCHG-TH ICHG-BI1 ICHG-BI2 Comparator 1, when CPU voltage is reversed Comparator 2, when BIAS2 voltage is reversed Total temperature, comparator 2 Comparators 1, 2 Comparators 1, 2 Comparators 1, 2 Comparators 1, 2 non-reversed input block only, SW3: on -1.5 -250 -3 -3 -5 5 -25 VCC2 - 1.5 +2 -1 +7 +1 +3 50 mV mV mV nA nA V mA VGATE-H VGATE-L Same as current drain 1-1 SW6: on, Same as current drain 1-2 5.3 5.4 0.1 0.2 V V Symbol Conditions Ratings min typ max Unit
[Input pin block] VIN1- = 15 mV, VIN1+ = 23 mV, VIN2- = 15 mV, VIN2+ = 23 mV CHARGE pin threshold voltage CHARGE pin input bias current 1 CHARGE pin input bias current 2 CHARGE-INH pin open voltage CHARGE-INH pin threshold voltage CHARGE-INH pin low-level input current BATT/EXT pin open voltage BATT/EXT pin threshold voltage BATT/EXT pin low-level input current SW1, 2, 5, 6: When on, BIAS2 voltages are reversed Current during threshold voltage VCHARGE = VCC2 55 70 VCC2 0.7 -30 VCC2 1.45 -30 2.05 1.3 0.5 1.2 10 85 V A A V V A V V A
VCH-IN-OP SW1, 2, 5, 6: on VCH-IN-TH SW1, 2, 5, 6: When on, BIAS2 voltages are reversed ICH-IN SW1, 2, 5, 6: on VBA/EX-OP SW1, 2, 6: on VBA/EX-TH SW1, 2, 6: When on, BIAS2 voltages are reversed VBA/EX SW1, 2, 5, 6: on
Handling Cautions Observe precautions when handling these ICs because they are electrostatic sensitive devices. Pin Assignment
No. 5640-3/6
LA5621M, 5621V Pin Functions
Pin No. LA5621M 1 2 3 4 5 6 7 -- -- 8 9 10 11 12 13 14 LA5621V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin name BIAS1 VIN1-* VIN1+* CPU BIAS2 VIN2-* VIN2+* NC NC GND CHARGE CHARGE INH BATT/EXT VCC2 GATE VCC1 Function Resistor connection pin for setting non-reversed input potential of comparator 1 Reversed input of comparator 1 (for charge current detection) Non-reversed input of comparator 1 (for charge current detection) Microcontroller signal input pin Resistor connection pin for setting non-reversed input potential of comparator 2 Reversed input of comparator 2 (for countercurrent detection when 2 batteries are used) Non-reversed input of comparator 2 (for countercurrent detection when 2 batteries are used) No connection No connection Substrate of this IC (Lowest potential) Charging signal input pin, charge with low Charge prohibition signal input pin, charge prohibition with low (becomes low during discharge mode for lithium-ion battery that set operates on) On/off control pin of this IC, except Gate block (becomes "Open" during discharge mode for lithium-ion battery that set operates on) Power supply input Gate connection pin of external power MOSFETs Lithium-ion battery + side input pin
Note: * If negative voltage is applied due to countercurrent, etc., up to 1.5 mA can be allowed.
Specified Test Circuit
Allowable power dissipation, Pd max -- W
Operating temperature, Ta -- C No. 5640-4/6
Set, internal side Clock, timer, CPU, backup
Secondary lithium-ion battery Load
Discharge current
External charge adapter
Charge detection
External wire bound Power supply for charging (ON when plug is inserted)
Charging/ Discharge mode Secondary lithium-ion battery
Charge current
Equivalent Circuit Block and Sample Peripheral Circuit
(OFF when plug is inserted)
Countercurrent detection
FW201 or FW203 equivalent
LA5621M, 5621V
Plug/SW
* Charging following internal battery use
Normal charging
VBAT2 < < VBAT1
* Full charging on set side; Discharge on adapter side
VBAT2 > VBAT1 Countercurrent from set to adapter
* Discharge/During set use, power MOSFETs are simply switched ON.
Application Cautions:
The charging conditions of the secondary battery to be used must be set according to the battery specifications. The peripheral circuit constants must be set taking into consideration the specifications of the power MOSFETs. Microcontroller use conditions must be carefully studied.
No. 5640-5/6
LA5621M, 5621V
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 March, 2000. Specifications and information herein are subject to change without notice. PS No. 5640-6/6

▲Up To Search▲

Price & Availability of LA5621V

	To Download LA5621V Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .