NJW4100 Datasheet PDF - New Japan Radio
| Part Number | NJW4100 | |
| Description | Lithium-ion Battery Charger Controller IC | |
| Manufacturers | New Japan Radio | |
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There is a preview and NJW4100 download ( pdf file ) link at the bottom of this page. Total 19 Pages | ||
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NJW4100
Lithium-ion Battery Charger Controller IC with Timer
■GENERAL DESCRIPTION
The NJW4100 is a Lithium-ion Battery Charger Controller
IC with over charger timer.
Charger current and voltage can individually be set by the
external resistors. Therefore, it can be used for a wide range
of battery cells for both 1-cell and 2-cell applications.
It includes a lot of safety features for safety conscious
www.DataShedete4sUig.cno:mOver voltage, Over discharge, temperature monitor
and over charge timers.
■PACKAGE OUTLINE
NJW4100M
NJW4100V
■FEATURES
● Adjustable Charge Voltage
● Adjustable Pre-Charge and Full Charge Current
● Temperature Monitor
● Over Charge Timer
● Internal Re-Charge function
● Delay timers and Hysteresis inputs for high noise immunity
● Over Discharge Battery Detect
● Over Voltage Protection
● Bi-CMOS Technology
● Package Outline
NJW4100M : DMP20
NJW4100V : SSOP20
■PIN CONFIGURATION
P-CHG 1
NFB
CNT
2
3
GND
4
NC 5
F-CHG
LED-G
LED-R
6
7
8
C1 9
C2 10
20 Q-CHG
19 CS1
18 CS2
17 VS
16 VREF
15 V+
14 TDET
13 TH
12 TL
11 CHG-SW
NJW4100M
NJW4100V
Ver.2005-01-20
-1-
|
| |
 
NJW4100
■PIN CONFIGULATION
Pin No.
Pin Name
1 P-CHG
2 NFB
3 CNT
4 GND
5 NC
6 F-CHG
7 LED-G
8 LED-R
9 C1
10 C2
www.DataSheet4U.com11
CHG-SW
12 TL
13 TH
14 TDET
15 V+
16 VREF
17 VS
18 CS2
19 CS1
20 Q-CHG
Function
Pre-Charge Current Setting
Current-Regulation-Loop Compensation
Charge Control for Output Pin (External PNP Transistor)
GND
Full Charge Current Setting
LED Output
LED Output
Pre-Charge Timer, 2mA Charge Timer, LED Blinking Cycle, Delay Time Setting
Quick Timer Setting
Charge ON/OFF Control
Batteries Thermal (High Temperature) Setting
Batteries Thermal (Low Temperature) Setting
Battery Temperature Detection, Battery Connected Detection
Operating Voltage
Reference Voltage Output
Battery Voltage Detection
Charge Current Detection 2
Charge Current Detection 1
Quick Charge Current Setting
■CHARGE VOLTAGE / CURRENT for RESISTANCE SETTING
Parameter
Calculation formula
Charge Control Voltage
Low Voltage Detection Voltage
Quick Charge Start Voltage
Re-Charge Detection Voltage
Over Voltage Detection Voltage
Pre-Charge Current
Quick Charge Current
Full Charge Current
VBAT
=
RB1 + RB2
RB2
x VREF-CV (4.2V)
VBAT x 0.475
VBAT x 0.73
VBAT x 0.95
VBAT x 1.025
IP-CHG =
(
RP2
RP1 + RP2
x
VREF (1.24V)
/
4)
/
RCS
(at. RP1:232kΩ, RP2:16kΩ, RCS=0.2Ω)
IQ-CHG =
(
RQ2
RQ1 + RQ2
x
VREF (1.24V)
/
4)
/
RCS
(at. RQ1:128kΩ, RQ2:120kΩ, RCS=0.2Ω)
IF-CHG =
( RF2
RF1 + RF2
x
VREF (1.24V)
/ 8)
/ RCS
(at. RF1:114.4kΩ, RF2:9.6kΩ, RCS=0.2Ω)
Examples of calculation
4.2V 8.4V
2.00V
3.07V
3.99V
4.305V
3.99V
6.13V
7.98V
8.61V
100mA
750mA
60mA
Ver.2005-01-20
-5-
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for NJW4100 electronic component. |
| Information | Total 19 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ NJW4100.PDF Datasheet ] | |
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