R5472L230CG-TR [RICOH]

Power Supply Support Circuit,;


型号：	R5472L230CG-TR
厂家：	RICOH ELECTRONICS DEVICES DIVISION
描述：	Power Supply Support Circuit,
文件：	总13页 (文件大小：453K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

R5472x Series

1-Cell Li-Ion Battery Protection IC

OUTLINE

NO.EA-323-181116

The R5472 is high voltage tolerance CMOS-based protection IC for over-charge/discharge and over-current

of rechargeable one-cell Lithium-ion (Li+)/Lithium polymer battery. The R5472 can detect over-

charge/discharge of Li+ one-cell and excess load current, further include a short circuit protector for preventing

large external short circuit current and the excess charge-current. The R5472 consists of four voltage detectors,

a reference unit, a delay circuit, a short circuit detector, an oscillator, a counter, and a logic circuit.

When the R5472 detects over-charge or over-charge current, the output of COUT pin switches to “L” level, that

is, the charger’s negative pin level after the internal fixed delay time. When the R5472 detects over-discharge

or excess discharge current, the output of DOUT pin switches to “L” level after the internal fixed delay time.

After detecting over-charge or excess charge current, theR5472 can be reset and the output of COUT becomes

“H” when a charger is disconnected from the battery pack, and the cell voltage becomes lower than over-

charge detector threshold.

However, depending on the characteristics of external components such as MOSFETs, release conditions may

be not enough just removing a charger from the battery pack. In that case, a kind of load must be set to release

the over-charge detect.

If a charger is continuously connected to the battery pack, even if the cell voltage becomes lower than over-

charge detector threshold, over-charge state is not released.

After detecting over-discharge voltage, connect a charger to the battery pack, and when the battery supply

voltage becomes higher than over-discharge detector threshold, the R5472 is released and the voltage of

DOUT pin becomes “H”. If the battery is discharged lower than maximum voltage for inhibition of charger,

recharge current is not acceptable. Once after detecting excess discharge-current or short circuit, the R5472

is released and DOUT level becomes “H” with detaching a battery pack from a load system. After detecting

over-discharge, supply current is kept extremely low by halting internal circuits' operation.

When the output of COUT is "H", by setting the V- pin at equal or lower than the delay shortening mode voltage

(Typ. -2.0V), the output delay can be shortened. Especially, the delay time of over charge detector can be

reduced into approximately 1/110. Thus, testing time of protector circuit board can be reduced. Output type of

COUT and DOUT is CMOS.

R5472x

NO.EA-323-181116

FEATURES

● Manufactured with High Voltage Tolerant Process

Absolute Maximum Rating·································· 30V

● Low supply current

Supply current (At normal mode) ························ TYP.4.0µA

Standby current ··············································· MAX 0.1µA

● High accuracy detector threshold

Over-charge detector ········································ ±20mV

Over-discharge detector ···································· ±35mV

Excess discharge-current detector ······················· ±10mV

Excess charge-current detector··························· ±10mV

● Variety of detector threshold

Over-charge detector threshold ··························· 4.1V to 4.405V in step of 0.005V

Over-discharge detector threshold ······················· 2.1V to 3.0V in step of 0.050V

Excess discharge-current threshold······················ 0.050V to 0.12V in step of 0.005V

Excess charge-current threshold·························· -0.050V to -0.12V in step of 0.005V

● Internal fixed Output delay time

Over-charge detector Output Delay··························· 1.0s

Over-discharge detector Output Delay ·················· 20ms

Excess discharge-current detector Output Delay ····· 12ms

Excess charge-current detector Output Delay········· 16ms

Short Circuit detector Output Delay ······················ 250µs

●

Output Delay Time Shortening Function ··············· At COUT is “H”, if V- level is set at –2.0V, the Output

Delay time of detect the over-charge and over-discharge can be reduced. (Delay Time for over-charge

becomes about 1/100 of normal state.)

● Conditions for release over-charge detector ············· Latch type

● Conditions for release over-discharge detector ········· Latch type

● 0V-battery charge option ····································· unacceptable

● Ultra Small package············································ R5472L : DFN1414-6 ,

R5472K : DFN(PLP)1414-6

APPLICATIONS

●

Li+ / Li Polymer protector of over-charge, over-discharge, excess-current for battery pack

High precision protectors for smart-phones and any other gadgets using on board Li+ / Li Polymer battery

R5472x

NO.EA-323-181116

SELECTION GUIDE

The input threshold of over-charge, over-discharge, excess discharge current, and the package and taping

can be designated.

Selection Guide

Product Name

R5472Lxxx$∗-TR

R5472Kxxx$∗-TR

Package

DFN1414-6

Quantity per Reel

5,000 pcs

Pb Free

Yes

Halogen Free

Yes

DFN(PLP)1414-6

5,000 pcs

Yes

xxx: Set Voltage Code

Refer to R5472x Code List.

$: Delay Time Version

Version

t_VDET1(s)

t_VDET2(ms)

t_VDET3(ms)

t_VDET4(ms)

t_SHORT(μs)

250

∗: Function Version

Return from

Over-Charge

Return from

Over-Discharge

Version

0-V Charge

Latch

Product Code List

R5472LCode List

Set Voltage [V]

Delay Time

t_VDET1t_VDET2t_VDET3t_VDET4t_SHORT

Function

Code

V_DET1V_REL1

V_DET2

V_REL2

V_DET3V_DET4

(s)

(ms)

(µs) Charge

R5472L206CG

R5472L225CG

R5472L230CG

R5472L231CG

4.280

2.400

2.800

0.080 -0.060

0.100 -0.080

0.080 -0.060

250

R5472x

NO.EA-323-181116

R5472KCode List

Set Voltage [V]

V_DET2V_REL2

Delay Time

Function

Code

t_VDET1t_VDET2t_VDET3t_VDET4t_SHORT

V_DET1V_REL1

V_DET3V_DET4

(s)

(ms)

(µs) Charge

R5472K206CG 4.280

R5472K231CG 4.280

R5472K234CG 4.405

R5472K236CG 4.230

R5472K246CG 4.405

R5472K251CG 4.230

R5472K252CG 4.280

2.400

2.800

2.400

2.800

3.000

0.080 -0.060

0.080 -0.050

0.080 -0.060

250

R5472x

NO.EA-323-181116

BLOCK DIAGRAM

VDD

DS Circuit

Oscillator

Counter

Logic

Level

Shift

Circuit

VD1

Short

Detector

Delay

VD4

Logic

Circuit

VD2

VD3

RSENS

V-

DOUT COUT

VSS

R5472x Block Diagram

PIN DESCRIPTIONS

R5472L (DFN1414-6) Pin Configuration

R5472K (DFN(PLP)1414-6) Pin Configuration

R5472x Pin Description

Pin No.

Symbol

Description

R5472L

R5472K

VSS

VDD

Vss pin. Ground pin for the IC

Power supply pin, the substrate voltage level of the IC.

Input of overcurrent detection

RSENS

V-

Pin for charger negative input

COUT

DOUT

Output of over-charge detection, CMOS output

Output of over-discharge detection, CMOS output

R5472x

NO.EA-323-181116

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings

(Ta = 25°C, V_SS= 0 V)

Symbol

V_DD

Parameter

Supply Voltage

Ratings

−0.3 to 12

Unit

V−

V− Pin Input Voltage

V_DD−30 to V_DD+0.3

V_SS−0.3 to V_DD+0.3

V_DD−30 to V_DD+0.3

V_SS−0.3 to V_DD+0.3

150

V_RSENS

V_COUT

V_DOUT

P_D

RSENS Pin Input Voltage

COUT Pin Output Voltage

DOUT Pin Output Voltage

Power Dissipation

°C

Junction Temperature Range

Storage Temperature Range

−40 to 125

Tstg

−55 to 125

ABSOLUTE MAXIMUM RATINGS

Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent

damages and may degrade the lifetime and safety for both device and system using the device in the field. The

functional operation at or over these absolute maximum ratings is not assured.

RECOMMENDED OPERATING CONDITIONS

Recommended Operating Conditions

Symbol

V_DD1

Parameter

Rating

1.5 to 5.0

−40 to 85

Unit

Operating Input Voltage

Operating Temperature Range

°C

RECOMMENDED OPERATING CONDITIONS

All of electronic equipment should be designed that the mounted semiconductor devices operate within the

recommended operating conditions. The semiconductor devices cannot operate normally over the recommended

operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And

the semiconductor devices may receive serious damage when they continue to operate over the recommended

operating conditions.

R5472x

NO.EA-323-181116

ELECTRICAL CHARACTERISTICS

R5472x Electrical Characteristics

Unless otherwise provided, Ta = 25°C

Symbol

Parameter

Conditions

Min.

Typ.

Max. Unit

Maximum Operating Voltage for Voltage Defined as

V_NOCHG

0.4

0.7

1.0

Inhibition of Charger

Over-charge Threshold

Voltage

V_DD-Vss, VDD-V- = 4V

V_DET1

R1=330Ω

V_DET1

-0.020

0.7

+0.020

1.3

t_VDET1Output Delay of Over-charge

V_DD=3.6V→4.4V

1.0

t_VREL1

Release Delay for VD1

V_DD=4V, V- = 0V→1V

Detect falling edge of

supply voltage

V_DET2

-0.035

V_DET2

+0.035

V_DET2

Over-discharge Threshold

V_DET2

t_VDET2Output Delay of Over-discharge V_DD=3.6V→2.0V

t_VREL2

Release Delay for VD2

V_DD=3V, V-=3V→0V

0.7

1.2

1.7

Detect rising edge of

'RSENS' pin voltage

V- = V_RSENS

Excess discharge-current

threshold

V_DET3

-0.010

V_DET3

+0.010

V_DET3

V_DD=3.0V,

V_RSENS= 0V to 0.4V

V- = V_RSENS

Output delay of excess

discharge-current

t_VDET3

Output delay of release

from excess discharge-current

V_DD=3.0V, V-=3V to 0V

V- = V_RSENS

V_DD=3.0V, V_RSENS=V-

t_VREL3

0.7

1.2

0.5

1.7

V_SHORTShort Protection Voltage

0.41

0.59

Delay Time for Short

Protection

V_DD=3.0V, V_RSENS=0V to 3V

V- = V_RSENS

t_SHORT

180

250

425

µs

Reset Resistance for

R_SHORT

V_DD=3.6V,V- =1.0V

kΩ

Excess Current Protection

Detect falling edge of

'RSENS' pin voltage

V- = V_RSENS

Excess charge-current

threshold

V_DET4

+0.010

V_DET4

-0.010

V_DET4

V_DD=3.0V,

V_RSENS=0V to -0.3V

V- = V_RSENS

Output delay of excess

t_VDET4

charge-current

Output delay of release

t_VREL4

V_DD=3.0V, V- = -1V to 0V

V- = V_RSENS

0.7

1.2

1.7

from excess charge-current

Delay Time Shortening

Mode Voltage

V_DS

V_DD=3.6V

-2.6

-2.0

-1.4

0.5

V_OL1

V_OH1

V_OL2

V_OH2

I_DD

Nch ON-Voltage of C_OUT

Pch ON-Voltage of C_OUT

Nch ON-Voltage of D_OUT

Pch ON-Voltage of D_OUT

Supply Current

Iol=50µA, V_DD=4.5V

Ioh=-50µA, V_DD=3.9V

Iol=50µA, V_DD=2.0V

Ioh=-50µA, V_DD=3.9V

V_DD=3.9V, V- =0V

V_DD=2.0V

0.4

3.7

0.2

3.7

4.0

3.4

0.5

µA

Istandby Standby Current

0.1

R5472x

NO.EA-323-181116

R5472x Electrical Characteristics

(-20°C ≤ Ta ≤ 60°C)

Typ. Max. Unit

Symbol

Parameter

Maximum Operating Voltage

for Inhibition of Charger

Over-charge Threshold

Voltage

Conditions

Voltage Defined as

V_DD-Vss, VDD-V-=4V

Min.

V_NOCHG

0.27

0.7

1.1

V_DET1

R1=330Ω

V_DET1

-0.025

0.67

+0.025

1.55

t_VDET1Output Delay of Over-charge

t_VREL1Release Delay for VD1

V_DD=3.6V→4.4V

V_DD=4V, V-=0V→1V

Detect falling edge of

supply voltage

1.0

10.7

24.8

V_DET2

-0.040

13.4

V_DET2

+0.040

V_DET2Over-discharge Threshold

V_DET2

t_VDET2Output Delay of Over-discharge V_DD=3.6V→2.0V

t_VREL2Release Delay for VD2

V_DD=3V, V-=3V→0V

0.65

1.2

1.86

Detect rising edge of

'RSENS' pin voltage

V- = V_RSENS

V_DET3

Excess discharge-current

threshold

V_DET3

-0.013 V_DET3+0.013

Output delay of excess

t_VDET3

V_DD=3.0V,V_RSENS=0V to 0.4V

V- = V_RSENS

7.5

18.6

discharge-current

Output delay of release

from excess discharge-current

V_DD=3.0V, V-=3V to 0V

V- = V_RSENS

V_DD=3.0V, V_RSENS=V-

t_VREL3

0.65

0.4

1.2

0.5

1.86

0.6

V_SHORTShort Protection Voltage

V_DD=3.0V, V_RSENS=0V to 3V

V- = V_RSENS

t_SHORTDelay Time for Short Protection

160

250

490

µs

Reset Resistance for Excess

R_SHORT

V_DD=3.6V,V- =1.0V

17.3

73.3

kΩ

Current Protection

Detect falling edge of

'RSENS' pin voltage

V- = V_RSENS

Excess charge-current

threshold

V_DET4

-0.015

V_DET4

+0.015

V_DET4

Output delay of excess

t_VDET4

V_DD=3.0V,V_RSENS=0Vto -0.3V

V- = V_RSENS

10.7

0.65

-2.7

1.2

-2.0

24.8

1.86

charge-current

Output delay of release

t_VREL4

V_DD=3.0V, V-=-1V to 0V

V- = V_RSENS

from excess charge-current

Delay Time Shortening Mode

Voltage

V_DS

V_DD=3.6V

-1.2

0.5

V_OL1

V_OH1

V_OL2

V_OH2

I_DD

Nch ON-Voltage of C_OUT

Pch ON-Voltage of C_OUT

Nch ON-Voltage of D_OUT

Pch ON-Voltage of D_OUT

Supply Current

Iol=50µA, V_DD=4.5V

Ioh=-50µA, V_DD=3.9V

Iol=50µA, V_DD=2.0V

Ioh=-50µA, V_DD=3.9V

V_DD=3.9V, V- =0V

V_DD=2.0V

0.4

3.7

0.2

3.7

4.0

3.4

0.5

8.7

µA

Istandby Standby Current

0.12

Note: All of this specification is guaranteed by design, not mass production tested.

R5472x

NO.EA-323-181116

APPLICATION INFORMATION

330Ω

VDD

0.1µF

R5472x

V-

VSS

DOUT COUT

RSENS

1kΩ

30mΩ

R5472x Typical Application Circuit

Cautions in selecting external components

• R1 and C1 stabilize a supply voltage to the R5472. A recommended R1 value is less than 1kΩ. A large

value of R1 makes detection voltage shift higher because of conduction current flown in the R5472. Further,

to stabilize the operation of R5472, use the C1 with the value of 0.01µF or more.

• R1 and R2 can operate also as parts for current limit circuit against reverse charge or applying a charger

with excess charging voltage to the R5472, battery pack. While small value of R1 and R2 may cause over

power dissipation rating of the R5472, therefore a total of “R1+R2” should be 1kΩ or more. Besides, if large

value of R2 is set, release from over-discharge by connecting a charger might not be possible.

Recommended R2 value is equal or less than 10kΩ.

• R3 is resistor to sense overdischarge or overcharge current. Recommended R3 value is 30mΩ.

• The typical application circuit diagram is just an example. This circuit performance largely depends on the

PCB layout and external components. In the actual application, fully evaluation is necessary.

• Over-voltage and the over current beyond the absolute maximum rating should not be forced to the

protection IC and external components.

• If positive terminal and negative terminal of the battery pack short, even though the short protection circuit

is built in the IC, during the delay time until detecting the shortcircuit, a large current may flow through the

FET.Select an FET with large enough current capacity in order to endure the large current during the delay

time.

R5472x

NO.EA-323-181116

Sense resistance and on resistance of the MOSFET selection guideline

Please select external MOSFET and sense resistor by the following expression.

1.3

vshort

≥

(R3 + MOSFETsRon)

V_SHORT= 0.5(V)

R3 = External current sense Resistance (Ω)

MOSFETsRon = external MOSFET ON Resistance (Ω)

Notes:

ex.

*As the Rsense, in case the 10mΩ is selected, to detect short at 50A with vshort=0.5V,

The on resistance of the external MOSFET must be 15mΩ or lower.

Otherwise, according to the Ron of the MOSFET, short current limit is lower than expected.

ex.

*As the Rsense, in case the 20mΩ is selected, to detect short at 25A with vshort=0.5V,

The on resistance of the external MOSFET must be 30mΩ or lower.

ex.

*As the Rsense, in case the 30mΩ is selected, to detect short at 16.6A with vshort=0.5V,

The on resistance of the external MOSFETmust be 45mΩ or lower.

PACKAGE DIMENSIONS

DFN1414-6

Ver. A

1.10±0.05

1.40

0.05

※

C0.15

INDEX

0.5

0.20±0.05

0.05

Bottom View

0.05 S

HSOP-18 Package Dimensions (Unit: mm)

∗ The tab on the bottom of the package shown by blue circle is a substrate potential (GND/V_DD). Do not connect to other

wires or land patterns.

PACKAGE DIMENSIONS

DFN(PLP)1414-6

Ver. A

∗

DFN(PLP)1414-6 Package Dimensions

∗ The tab on the bottom of the package shown by blue circle is a substrate potential (VDD). It is recommended that

this tab be connected to the VDD pin on the board but it is possible to leave the tab floating.

1. The products and the product speciﬁcations described in this document are subject to change or discontinuation of

production without notice for reasons such as improvement. Therefore, before deciding to use the products, please

refer to Ricoh sales representatives for the latest information thereon.

2. The materials in this document may not be copied or otherwise reproduced in whole or in part without prior written

consent of Ricoh.

3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or otherwise

taking out of your country the products or the technical information described herein.

4. The technical information described in this document shows typical characteristics of and example application circuits

for the products. The release of such information is not to be construed as a warranty of or a grant of license under

Ricoh's or any third party's intellectual property rights or any other rights.

5. The products listed in this document are intended and designed for use as general electronic components in standard

applications (oﬃce equipment, telecommunication equipment, measuring instruments, consumer electronic products,

amusement equipment etc.). Those customers intending to use a product in an application requiring extreme quality

and reliability, for example, in a highly speciﬁc application where the failure or misoperation of the product could result

in human injury or death (aircraft, spacevehicle, nuclear reactor control system, traﬃc control system, automotive and

transportation equipment, combustion equipment, safety devices, life support system etc.) should ﬁrst contact us.

6. We are making our continuous eﬀort to improve the quality and reliability of our products, but semiconductor products

are likely to fail with certain probability. In order to prevent any injury to persons or damages to property resulting from

such failure, customers should be careful enough to incorporate safety measures in their design, such as redundancy

feature, ﬁre containment feature and fail-safe feature. We do not assume any liability or responsibility for any loss or

damage arising from misuse or inappropriate use of the products.

7. Anti-radiation design is not implemented in the products described in this document.

8. The X-ray exposure can inﬂuence functions and characteristics of the products. Conﬁrm the product functions and

characteristics in the evaluation stage.

9. WLCSP products should be used in light shielded environments. The light exposure can inﬂuence functions and

characteristics of the products under operation or storage.

10. There can be variation in the marking when diﬀerent AOI (Automated Optical Inspection) equipment is used. In the

case of recognizing the marking characteristic with AOI, please contact Ricoh sales or our distributor before attempting

to use AOI.

11. Please contact Ricoh sales representatives should you have any questions or comments concerning the products or

the technical information.

Ricoh is committed to reducing the environmental loading materials in electrical devices

with a view to contributing to the protection of human health and the environment.

Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since

Halogen Free

April 1, 2012.

https://www.e-devices.ricoh.co.jp/en/

Sales & Support Oﬃces

Ricoh Electronic Devices Co., Ltd.

Shin-Yokohama Oﬃce (International Sales)

2-3, Shin-Yokohama 3-chome, Kohoku-ku, Yokohama-shi, Kanagawa, 222-8530, Japan

Phone: +81-50-3814-7687 Fax: +81-45-474-0074

Ricoh Americas Holdings, Inc.

675 Campbell Technology Parkway, Suite 200 Campbell, CA 95008, U.S.A.

Phone: +1-408-610-3105

Ricoh Europe (Netherlands) B.V.

Semiconductor Support Centre

Prof. W.H. Keesomlaan 1, 1183 DJ Amstelveen, The Netherlands

Phone: +31-20-5474-309

Ricoh International B.V. - German Branch

Semiconductor Sales and Support Centre

Oberrather Strasse 6, 40472 Düsseldorf, Germany

Phone: +49-211-6546-0

Ricoh Electronic Devices Korea Co., Ltd.

3F, Haesung Bldg, 504, Teheran-ro, Gangnam-gu, Seoul, 135-725, Korea

Phone: +82-2-2135-5700 Fax: +82-2-2051-5713

Ricoh Electronic Devices Shanghai Co., Ltd.

Room 403, No.2 Building, No.690 Bibo Road, Pu Dong New District, Shanghai 201203,

People's Republic of China

Phone: +86-21-5027-3200 Fax: +86-21-5027-3299

Ricoh Electronic Devices Shanghai Co., Ltd.

Shenzhen Branch

1205, Block D(Jinlong Building), Kingkey 100, Hongbao Road, Luohu District,

Shenzhen, China

Phone: +86-755-8348-7600 Ext 225

Ricoh Electronic Devices Co., Ltd.

Taipei oﬃce

Room 109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan

Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623

R5472L230CG-TR [RICOH]

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