R5642L Series
1 to 3
Cells Li-Ion Battery Protection IC for Secondary Protection
No.EA-613-220823
1
The R5642L is an overcharge protection IC for 1 to 3 serial cells Li-ion / Li-polymer rechargeable battery.
This IC provides the high-accuracy voltage detection function and the shutdown function can reduce the
supply current to the minimum when all cell’s voltage becomes less than the shutdown detection voltage.
● Low consumption current and low shutdown current: achieving longer driving time with a battery of small
capacity
● High Voltage Tolerant Process
Absolute maximum rating: 26 V
● Low Supply Current
Normal mode: Typ. 0.85 µA (
V
CELLn
(1)
: 3.9 V, for 3-cell)
● Overcharge Voltage Detector with High Accuracy
Detection voltage (V
DET1n
) and accuracy: 4.10 V to 4.65 V, ± 0.015 V (Ta = 25°C)
Release voltage (V
REL1n
): V
DET1n
– 0 V to V
DET1n
− 0.5 V
Delay time selectable (t
VDET1
): 2, 4, 6 sec, with delay shortening function
(2)
Release condition: Auto release
● COUT Output (CMOS Output, Active-high): Typ. 4.7 V
● Shutdown Function
Detection voltage: Typ. 3.5 V ±0.3 V
Shutdown current: Max.0.1µA
● 1 to 3 Cells Selectable Battery Protection
DFN2020-6
2.0 x 2.0 x 0.8 [mm]
Smart Phone, Tablet PC, Game, Hearing Aid
(1)
CELLn voltage (Ex. V
CELL1
is a voltage difference between VC1 and VC2), n = 1, 2, 3
(2)
By applying a voltage of 4 V ± 0.2 V to between the VDD and VC1 pins, a delay time is reduced down to approx.1/90.
OVERVIEW
KEY BENEFITS
KEY SPECIFICATIONS
PACKAGE
APPLICATIONS
TYPICAL APPLICATION CIRCUIT for 3-cell
R5642L
No.EA-613-220823
2
SELECTION GUIDE
The overcharge and the delay time are user-selectable options. Set Voltage, Delay Time and Optional Function
are user selectable. Refer to Product Code List for major lineup.
Selection Guide
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R5642Lxxx$∗-TR
DFN2020-6 3,000 pcs Yes Yes
xxx: Specify a code that combines the following set voltages. Refer to Set Voltage Code in Product Code
List for major codes.
V
DET1n
(1)
: 4.10 V to 4.65 V in 5 mV step
V
REL1n
(2)
: V
DET1n
– 0 V to V
DET1n
– 0.5 V in 50 mV step
$: Specify a code that combines the following delay times. Refer to Delay Time Code Table for details.
Delay Time Code Table (Code Option
(2)
)
Code
t
VDET1
[s]
t
VREL1
[ms]
A
2
16
B
4
16
C
6
16
∗: Specify a code that combines the following functions. Refer to Function Code Table for details.
Function Code Table
Code
Overcharge Released Condition
COUT Output
A
Auto Release
CMOS
High-active
Product Code Table
Product Name
(Set Voltage Code
(3)
)
Set Voltage [V]
Delay Time
V
DET1
V
REL1
t
VDET1
[s]
t
VREL1
[ms]
R5642L317BA
4.500
4.200
4
16
R5642L326BA
4.200
4.200
4
16
R5642L301BA
4.450
4.150
4
16
R5642L304BA
4.400
4.100
4
16
(1)
V
DET1n,
V
REL1n
: n = 1, 2, 3
(2)
For more information on other code options, please contact our company's sales department.
(3)
Indicated with the numbers in bold type.