RICOH RN5VM111C-TR, RN5VM111D-TR, RN5VM112C-TR, RN5VM112D-TR Datasheet
APPLICATION MANUAL
Li-lon BATTERY PROTECTOR
RN5VM1
××
C/D SERIES
NO. EA-041-9803
ELECTRONIC DEVICES DIVISION
NOTICE
1. The products and the product specifications described in this application manual 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.
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consent of Ricoh.
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otherwise taking out of your country the products or the technical information described herein.
4. The technical information described in this application manual 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, computer 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 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 application manual.
8. Please contact Ricoh sales representatives should you have any questions or comments concerning the
products or the technical information.
June 1995
RN5VM1
××
C/D Series
APPLICATION MANUAL
CONTENTS
OUTLINE
......................................................................................................
1
FEATURES
...................................................................................................
1
APPLICATIONS
.............................................................................................
2
BLOCK DIAGRAMS
.......................................................................................
2
SELECTION GUIDE
.......................................................................................
2
PIN CONFIGURATION
...................................................................................
3
PIN DESCRIPTION
........................................................................................
3
ABSOLUTE MAXIMUM RATINGS
...................................................................
4
ELECTRICAL CHARACTERISTIC
..................................................................
5
TIMING DIAGRAM
.........................................................................................
9
OPERATION
................................................................................................
11
TEST CIRCUIT
............................................................................................
13
TYPICAL CHARACTERISTICS
.....................................................................
15
1) Over-charge Threshold VDET1 (V)
.....................................................................
15
2) Over-discharge threshold VDET2 (V)
..................................................................
15
3) Excess current threshold VDET3 (V)
...................................................................
15
4) Short circuit protector Threshold Vshort (V)
.........................................................
15
5) Output Delay of Over-charge tVDET1 (ms)
............................................................
15
6) Output Delay of Over-discharge tVDET2 (ms)
........................................................
15
7) Output Delay of Excess current tVDET3 (ms)
.........................................................
16
8) Output Delay of Short circuit Protector tshort (µs)
..................................................
16
9) Over-charge Threshold Hysteresis VHYS1 (mV)
.....................................................
16
10) Supply Current IDD (µA)
................................................................................
16
11) Standby Current Istandby (µA)
........................................................................
16
12) COUT Nch Driver ON Voltage VOL1 (V)
...............................................................
17
13) COUT Pch Driver ON Voltage VOH1 (V)
...............................................................
17
14) DOUT Nch Driver ON Voltage VOL2 (V)
...............................................................
17
15) DOUT Pch Driver ON Voltage VOH2 (V)
...............................................................
17
16) Output Delay of Over-charge tVDET1 (ms)
............................................................
18
17) Output Delay of Short protection tshort (µs)
.........................................................
18
18) Output Delay of Excess Current tVDET3 (ms)
........................................................
18
19) Excess Current Threshold VDET3 (V)
.................................................................
18
20) Over-charge Threshold VDET1 (V)
.....................................................................
18
TYPICAL APPLICATION
..............................................................................
19
APPLICATION HINTS
...................................................................................
19
PACKAGE DIMENSION
................................................................................
20
TAPING SPECIFICATION
.............................................................................
20
1
Li-lon BATTERY PROTECTOR
RN5VM1××C/D SERIES
OUTLINE
The RN5VM Series are protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) batteries by
CMOS process.
The RN5VM Series can detect over-charge/discharge of Li+ one-cell and excess load current, further include a short cir-
cuit protector for preventing large external short circuit current.
Each of these ICs is composed of three voltage detectors, a reference unit, a hysteresis circuit, and a short circuit protec-
tor. When charging voltage crosses the detector threshold from a low value to a value higher than V
DET1, the output of
C
OUT pin, the output of over-charge detector/VD1, switches to low level, ..charger’s negative pin level. After detecting over-
charge the VD1 can be reset and the output of C
OUT pin becomes “H” when the VDD voltage is coming down to a level low-
er than “V
DET1 - VHYS1”, or when a charger is disconnected from the battery pack while the VDD level is in between “VDET1”
and “V
DET1 - VHYS1” in the RN5VM1××C version.
While in the RN5VM1
××D version after detecting over-charge, any load current can not be drawn from the battery pack
when the V
DD voltage stays over “VDET1 - VHYS1”, excepting that the VD1 can be reset and it allows to draw load current
when the V
DD voltage is coming down to a level lower than “VDET1 - VHYS1” because of a cell internal discharging.
The output of D
OUT pin, the output of over-discharge detector/VD2, switches to “L” after internally fixed delay time passed,
when discharging voltage crosses the detector threshold from a high value to a value lower than V
DET2. An excess load cur-
rent can be sensed and cut off after internally fixed delay time passed through the built in excess current detector, VD3,
with D
OUT being enabled to low level. Once after detecting excess current, the VD3 is released and DOUT level switches
to “H” by detaching a battery pack from a load system.
Further, short circuit protector makes D
OUT level to “L” immediately with external short circuit current and removing
external short circuit leads D
OUT level to “H”. After detecting over-discharge, supply current will be kept extremely “L” by
halting some internal circuits operation. The output delay of over-charge detectors can be set by connecting external capac-
itors. Output type of C
OUT and DOUT are CMOS. SOT23-6 is available.
FEATURES
• Low supply current
................................
Supply current TYP. 3.0µA
Standby current (after detecting over-discharge) TYP. 0.3µA
• High withstand voltage
..........................
Absolute maximum ratings 28V (V
DD–V-)
• High accuracy detector threshold
.......
Over-charge detector ±50mV
Over-discharge detector ±2.5%
• Variety of detector threshold
................
Over-charge detector threshold 4.0V to 4.4V/step of 0.01V
Over-discharge detector threshold 2.0V to 3.0V/step of 0.05V
• Built-in protection circuit
.......................
Excess current trip/Short circuit protector
• Output delay of over-charge
.................
Time delay at C
3= 0.01µF and VDD=4.3V 75ms for RN5VM111×
• Ultra small package
...............................
SOT-23-6
RN5VM1××C/D
2
APPLICATIONS
BLOCK DIAGRAM
• Over-charge/over-discharge protection for Li+ one-cell pack
• High precision protectors for cell-phones and any other gadgets using on board Li+ one-cell battery
SELECTION GUIDE
In the RN5VM1×××Series three of the input threshold for over-charge, over-discharge and excess current and taping type
can be designating at the user’s request by Part Number as follows:
RN5VM1
×××–×× ←Part Number
↑ ↑ ↑
a b c
VDD Ct
+
VD1
+
–
–
–
+
VD2
VD3
VSS
DOUT
COUT
V-
5
2
61
4
3
Level
Shift
Short Circuit
Detector
Delay
}
}
Code Description
a
Serial Number for the RN5VM Series designating input threshold for over-charge, over-discharge and
excess current detectors as well as hysteresis range for over-charge detector.
Designation of version symbols
b C : drawing load current is allowable after detecting over-charge.
D : drawing load current is not allowable after detecting over-charge.
c
Designation of Taping Type:
TR (refer to Taping Specification)
3
RN5VM1××C/D
PIN CONFIGURATION
1 2
3
6 4
(mark side)
5
•SOT-23-6
PIN DESCRIPTION
Pin No. Symbol Pin description
1 COUT Output of over-charge detection, CMOS output
2 Ct Pin for external capacitor setting output delay of VD1
3 VSS Ground
4 DOUT Output of over-discharge detection, CMOS output
5 VDD Power supply
6 V- Pin for charger negative input
RN5VM1××C/D
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VDD Supply Voltage –0.3 to 12 V
V-
Input Voltage
V- pin V
DD–28 to VDD+0.3 V
Vct Ct pin Vss–0.3 to VDD+0.3 V
V
COUT
Output Voltage
C
OUT pin VDD–28 to VDD+0.3 V
VDOUT DOUT pin Vss–0.3 to VDD+0.3 V
PD Power Dissipation 150 mW
Topt Operating Temperature Range –40 to +85 ˚C
Tstg Storage Temperature Range –55 to +125 ˚C
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device. These
are stress ratings only and do not necessarily imply functional operation below these limits.
Vss=0V
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