NJW4100V-TE1 [NJRC]
Power Management Circuit;
| 型号： | NJW4100V-TE1 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | Power Management Circuit |
| 文件： | 总19页 (文件大小：310K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJW4100
Lithium-ion Battery Charger Controller IC with Timer
■GENERAL DESCRIPTION
■PACKAGE OUTLINE
The NJW4100 is a Lithium-ion Battery Charger Controller
IC with over charger timer.
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
design: Over voltage, Over discharge, temperature monitor
and over charge timers.
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
2
20
19
18
17
16
15
14
13
12
11
Q-CHG
CS1
NFB
CNT
3
CS2
GND
NC
4
VS
5
VREF
V+
6
F-CHG
7
TDET
TH
LED-G
LED-R
8
C1
C2
9
TL
10
CHG-SW
NJW4100M
NJW4100V
Ver.2006-08-03
- 1 -
NJW4100
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
MAXIMUM RATINGS
UNIT
Operating Voltage
V+
VC1
+15
V
C1 Pin Voltage
+5
V
C2 Pin Voltage
VC2
+5
V
TDET Pin Voltage
VTDET
ISINK-CNT
ISINK-G
ISINK-R
+5
V
CNT Pin Output Current
LED-G Pin Output Current
LED-R Pin Output Current
50
20
mA
mA
mA
20
DMP20 :300
SSOP20 :300
-20 ~ +85
Power Dissipation
PD
mW
Operating Temperature Range
Storage Temperature Range
TOPR
TSTG
°C
°C
-40 ~ +125
■ELECTRICAL CHARACTERISTICS (V+=5V, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
General Characteristics
Operating Voltage
Operating Current
VOP
ICC
–
–
–
2
14
3
V
mA
CHG-SW: OPEN
Under Voltage Lockout Block
ON Threshold Voltage
OFF Threshold Voltage
Hysteresis Voltage
VT-ON
VT-OFF
VHYS
2.2
2.0
100
2.4
2.2
200
2.6
2.4
300
V
V
mV
Reference Voltage Block
Reference Voltage
Load Regulation
VREF
IREF=0mA
1.228
–
1.24
–
1.253
10
V
mV
∆VREF IREF=0mA~1mA
Voltage Detection Block
VBAT
VBAT
VBAT
Quick Charge Detection Voltage
VQ-CHG VS: L→H
VR-CHG VS: H→L
V
V
V
x 0.71 x 0.73 x 0.75
VBAT
x 0.94 x 0.95 x 0.96
VBAT VBAT VBAT
x 1.015 x 1.025 x 1.035
VBAT
VBAT
Re-Charge Detection Voltage
Over Voltage Detection Voltage
VOV
VREF-CV VS Pin
IVS VS=4.2V
VT-TDET TDET Pin
VS: L→H
Charge Control Block
Reference Voltage
4.17
–
4.2
50
4.23
500
–
V
nA
V
VS Pin Input Bias Current
Battery Connected
–
1.15
Detection Voltage
Low Voltage Detection (2mACharge) Block
Charge Current
ICHG1
VS=1V
1
2
3
mA
V
VBAT
VBAT
VBAT
Low Voltage Detection Voltage
VLV
VS: L→H
x 0.455 x 0.475 x 0.495
Ver.2006-08-03
- 2 -
NJW4100
■ELECTRICAL CHARACTERISTICS (V+=5V, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
11.5
TYP.
12
MAX.
UNIT
Current Detection Block
Pre-Charge /Quick Charge Block
Voltage Gain
AV1
AV2
CS1=3.8V, CS2=3.6V
12.5
dB
Full Charge Block Voltage Gain
CS2=VS=4.2V, VF-CHG=96mV
15.5
48
–
18
–
10
10
21
–
500
500
dB
mV
nA
nA
F-CHG Pin Input Voltage Range
CS1 Pin Input Bias Current
CS2 Pin Input Bias Current
VF-CHG CS2=VS=4.2V
ICS1
ICS2
CS1=4.2V
CS2=4.2V
–
Output Block
CNT Pin Saturation Voltage
CNT Pin Leak Current
–
–
VOL-CNT ISINK=20mA
ILEAK-CNT V+=14V
0.2
–
0.5
1
V
µA
LED Out Block
–
–
–
–
LED-G Pin Saturation Voltage
LED-G Pin Leak Current
LED-R Pin Saturation Voltage
LED-R Pin Leak Current
VOL-G ISINK=10mA
ILEAK-G V+=14V
0.2
–
0.2
–
0.5
1
0.5
1
V
µA
V
VOL-R ISINK=10mA
ILEAK-R V+=14V
µA
Timer Block
OSC1 Timer Error Time
OSC2 Timer Error Time
–
–
∆T1
∆T2
-10
-10
+10
+10
%
%
C1=C2=0.01µF external
Not including external deviation
CHG-SW Block
–
1
300
–
–
500
ON Threshold Voltage
OFF Threshold Voltage
Pull-up Resistance
VSW-ON
VSW-OFF
RPULL-UP
0.25
–
700
V
V
kΩ
Ver.2006-08-03
- 3 -
NJW4100
■TYPICALAPPLICATION
Input
VREF
RP1
RP2
RQ1
CS2
RQ2
V+
NFB
P-CHG
Q-CHG
CNT
12dB
CS1
CS2
Rcs
Reference
Voltage 1
1.24V
VREF
VREF1
CVCC-ON
CVCC-ON
RB1
RB2
Reference
Voltage 2
4.2V
When is -cell
１
、
VS
VREF2
VREF2
RB1：Short
RB2：Open
F-CHG
Quick/
Pre-Charge
Full Charge
Detection
GND
VREF
6dB
RF1
RF2
Charge
CVCC-ON
CS1 pin
ON/OFF
Quick Charge
V
V
V
V
BAT x 0.73
2mA
Charge
Re-Charge
BAT x 0.95
Battery
Voltage
Detection
CLK
Over Voltage
Detection
BAT x 1.025
BAT x 0.475
Pre-
Charge
Timer
OSC
1
Start/Stop
Time Out
VREF
Low Voltage
Detection
C1
Low Temperature
Detection
TDET
TH
Full
Charge
Timer
Start/Stop
Time Out
OSC
2
C2
LED-G
LED-R
High Temperature
Detection
TL
Charge
-ON
LED-G
LED-R
Battery Connected
Detection
+
V
+
V
Control
Logic
RPULL-UP
UVLO
Lithium Ion Battery
GND
CHG-SW
Ver.2006-08-03
- 4 -
NJW4100
■PIN CONFIGULATION
Pin No.
1
Pin Name
Function
P-CHG
NFB
Pre-Charge Current Setting
2
Current-Regulation-Loop Compensation
Charge Control for Output Pin (External PNP Transistor)
GND
3
CNT
GND
NC
4
5
6
F-CHG
LED-G
LED-R
C1
Full Charge Current Setting
LED Output
7
8
LED Output
9
Pre-Charge Timer, 2mA Charge Timer, LED Blinking Cycle, Delay Time Setting
Quick Timer Setting
10
11
12
13
14
15
16
17
18
19
20
C2
CHG-SW
TL
Charge ON/OFF Control
Batteries Thermal (High Temperature) Setting
Batteries Thermal (Low Temperature) Setting
Battery Temperature Detection, Battery Connected Detection
Operating Voltage
TH
TDET
V+
VREF
VS
Reference Voltage Output
Battery Voltage Detection
CS2
Charge Current Detection 2
CS1
Charge Current Detection 1
Q-CHG
Quick Charge Current Setting
■CHARGE VOLTAGE / CURRENT for RESISTANCE SETTING
Parameter
Calculation formula
Examples of calculation
R
B1+RB2
VBAT
=
x VREF-CV (4.2V)
Charge Control Voltage
4.2V
8.4V
RB2
Low Voltage Detection Voltage
Quick Charge Start Voltage
Re-Charge Detection Voltage
Over Voltage Detection Voltage
VBAT x 0.475
VBAT x 0.73
VBAT x 0.95
VBAT x 1.025
2.00V
3.07V
3.99V
4.305V
3.99V
6.13V
7.98V
8.61V
R
P1
P2
I
P-CHG = (
P2 x VREF (1.24V) / 4) / RCS
Pre-Charge Current
Quick Charge Current
Full Charge Current
R
+
R
100mA
750mA
60mA
(at. RP1:232kΩ, RP2:16kΩ, RCS=0.2Ω)
R
Q1
Q2
IQ-CHG = (
Q2 x VREF (1.24V) / 4) / RCS
R
+ R
(at. RQ1:128kΩ, RQ2:120kΩ, RCS=0.2Ω)
R
F1
F2
I
F-CHG = (
F2 x VREF (1.24V) / 8) / RCS
R
+ R
(at. RF1:114.4kΩ, RF2:9.6kΩ, RCS=0.2Ω)
Ver.2006-08-03
- 5 -
NJW4100
■TYPICAL CHARACTERISTICS
Reference Voltage vs. Temperature
(V+=5V, IREF=0mA)
Charge Control Block Reference Voltage
+
vs. Temperature (V =5V, VS Pin)
1.25
1.245
1.24
4.26
4.24
4.22
4.2
1.235
1.23
4.18
4.16
4.14
1.225
1.22
-50 -25
0
25 50 75 100 125
-50 -25
0
25 50 75 100 125
Ambient Temperature Ta (oC)
Ambient Temperature Ta (oC)
Pre-Charge/Quick Charge Block Voltage Gain
CHG-SW Block Threshold Voltage
+
+
vs. Temperature (V =5V, CS1=3.8V, CS2=3.6V)
vs. Temperature (V =5V)
0.8
12.6
12.4
12.2
12
0.7
0.6
0.5
0.4
0.3
0.2
VSW_OFF
11.8
11.6
11.4
VSW_ON
-50 -25
0
25 50 75 100 125
-50 -25
0
25 50 75 100 125
Ambient Temperature Ta (oC)
Ambient Temperature Ta (oC)
Operating Current vs. Temperature
(V+=5V, CHG-SW:OPEN)
3
2.5
2
1.5
1
0.5
0
-50 -25
0
25 50 75 100 125
Ambient Temperature Ta (oC)
Ver.2006-08-03
- 6 -
NJW4100
■TYPICAL CHARACTERISTICS
LED Pin Saturation Voltage vs. Sink Current
CNT Pin Saturation Voltage vs. Sink Current
(V+=5V, Ta=25oC)
(V+=5V, Ta=25oC)
0.5
0.5
0.4
0.3
0.2
0.1
0
0.4
0.3
0.2
0.1
0
LED-R
LED-G
0
5
10
15
20
0
10
20
30
40
50
Sink Current ISINK (mA)
Sink Current ISINK (mA)
Oscillation Cycle vs. Temperature
(V+=5V, C1=C2=0.01
F)
Oscillation Cycle vs. Capacitance
(V+=5V, Ta=25oC)
µ
14
13
12
11
10
9
100
10
1
8
7
6
-50 -25
0
25 50 75 100 125
0.001
0.01
0.1
Ambient Temperature Ta (oC)
Capacitance C1, C2 (µF)
Ver.2006-08-03
- 7 -
NJW4100
■
FEATURE DESCRIPTION
1. Voltage Detection Block (VS pin)
The VS pin determines charge voltage, low voltage, over voltage, and re-charge voltage. Battery voltage conditions are
constantly monitored. (Figure 1)
1-1. Charge Voltage (VS pin)
Charge voltage VBAT is set using the VS pin external
resistors RB1 and RB2 and the following equation:
Charge Voltage
Control Amp
R
B1+RB2
VBAT
=
x VREF-CV (4.2V)
RB1
RB2
To OR
Circuit
RB2
VS
VREF2
Using the following settings makes it easy to support
applications for one or two cells: for one cell, RB1= short,
and RB2= open; for two cells, RB1=RB2.
CVCC-ON
Control Block
Quick Charge
Detection
For 1 Cell
VBAT x 0.73
RB1: Short
If you use a high resistance, the VS pin's bias current will
cause incorrect values. Use as low a resistance as
possible.
RB2: Open
Recharge
Detection
Battery
Voltage
Detection
VBAT x 0.95
Over Voltage
Detection
To Charge
VBAT x 1.025
Low Voltage
Detection
VBAT x 0.475
1-2. Overcharge Detection Block (VS pin)
The overcharge detection block stops charging when a
high voltage is detected at the VS pin.
Figure 1. Voltage Detection Block Configuration
The overcharge detection voltage is obtained with the following equation:
VOV=VBAT × 1.025 (typ.)
When overcharge is detected, charging is prohibited and LED-R blinks. After that, charge will continue to be prohibited, even
after battery voltage drops to a normal value. Turning the power off to release UVLO, battery connection detection, or
CHG-SW switching will enable the charge sequence to restart.
1-3. Low Voltage Detection (2mA charge) Block (VS pin, CS1 pin)
The low voltage detection block detects an
over-discharged battery, or an open battery caused by
the battery protection circuit or the like. This will
determine a 2mA charge prior to pre-charging.
2mA Charge
Current
The low voltage detection voltage is obtained with the
following equation:
To Charge Current
12dB
Control Amp
CS1
CS2
Rcs
2mA Charge
VLV=VBAT × 0.475 (typ.)
During a 2mA charge, the block monitors battery voltage
recovery while a steady 2mA current is output from the
CS1 pin. (Figure 2)
Low Voltage
Detection
RB1
RB2
VBAT x 0.475
VS
Control Block
If voltage does not recover within a prescribed time, the
timer will prohibit 2mAcharging. Turning the power off to
release UVLO, battery connection detection, or CHG-SW
switching will enable the charge sequence to restart.
To Charge
Output
Figure 2. 2mA Charging Block
1-4. Re-Charge Detection (VS pin)
When a fully charged battery is left for a long period of time, voltage will drop due to self-discharge. The re-charge detection
block detects a drop in voltage and re-charges the battery.
The re-charge detection voltage is obtained with the following equation.
VR-CHG=VBAT × 0.95 (typ.)
Ver.2006-08-03
- 8 -
NJW4100
■
FEATURE DESCRIPTION (CONTINUED)
2. Current Detection Block (CS1 pin, CS2 pin)
A current detection resistor RCS is inserted between pin CS1 and pin CS2 to monitor battery charge current.
The input voltage between pin CS1 and pin CS2 is amplified by the 12dB current detection amp and fed back to the charge
current control amp. (Figure 3)
2-1. Pre-Charge Current, Quick Charge Current (P-CHG pin, Q-CHG pin)
This will switch between charging with pre-charge current or quick charge current according to the level of the battery
voltage VBAT that is input from the VS pin.
VBAT x 0.475 to VBAT x 0.73
VBAT x 0.73 to VBAT
Pre-charge control
Quick charge control
Pre-charge and quick charge current values are determined by the P-CHG pin and the Q-CHG pin voltage settings.
Settings are made according to the following formulae.
VREF
RP1
RP2
RQ1
Pre-Charge Current Value
CS2
RP2
IP-CHG = (
P2 x VREF (1.24V) / 4) / RCS
P1+ R
RQ2
R
NFB
P-CHG
Q-CHG
Quick Charge Current Value
RQ2
IQ-CHG = (
Q2 x VREF (1.24V) / 4) / RCS
Q1+ R
R
Charge Current
Control Amp
12dB
To OR
Circuit
CS1
CS2
Rcs
CVCC-ON
2-2. Full Charge Detection (F-CHG pin)
To Charge Voltage
Control Amp
RB1
RB2
Charge termination is determined by a set full
Switch Pre/Quick
Charge Current
VS
charge current
voltage setting on the F-CHG pin.
IF-CHG., which is determined by a
F-CHG
Quick/
VREF
Pre-Charge
R
F2
Full Charge
Detection
6dB
IF-CHG = (
x VREF (1.24V) / 8) / RCS
RF1
RF2
RF1+ RF2
Quick Charge
Detection
When charging is terminated, LED-G turns on,
and the sequence moves to the re-charge
detection operation.
VBAT x 0.73
To Charge
Output
Control Block
Figure 3. Block for Controlling Pre-Charge, Quick Charge,
and Block for Detecting Full Charge.
Ver.2006-08-03
- 9 -
NJW4100
■
FEATURE DESCRIPTION (CONTINUED)
3. Charge Control Output Block (CNT pin)
A PNP transistor connected to the CNT pin controls the voltage and current required to charge the battery.
When the CHG-SW pin and battery-connected detection are both ON the system moves to charge control mode. If battery
voltage and temperature conditions are appropriate, charging will begin. During 2mAcharging the PNP transistor will go to
OFF status.
4. Temperature Detection Block, Battery Connected Detection Block (TDET pin, TH pin, TL pin)
The charge temperature range is set with the TL pin (high temperature) and the TH pin (low temperature).
The threshold voltage for the temperature detection comparator is set with the external resistors RTHL, RTH, RTL. Therefore,
you can select any type of thermistor (NTC) and any charge temperature range (Figure 4).
The TL pin and the TH pin are set to go to the potential states shown below for fluctuations in TDET voltage.
VTL (high temperature) < VTDET (charge Temperature) < VTH (low temperature)
Pin voltages are obtained from the
following formulae.
VREF
RTDET
Low Temperature
Detection
RTHL
TDET pin (thermistor setting)
RT
TDET
TH
VTDET
=
× VREF(1.24V)
RTDET + RT
High Temperature
Detection
RTH
RTL
TL
Charge
-ON
RT
TH pin (low temperature setting)
RTH + RTL
RTHL + RTH + RTL
Battery Connected
Detection
VTH
=
× VREF(1.24V)
VT-TDET=1.15V
To CHG-SW To UVLO
Lithium Ion Battery
TL pin (high temperature setting)
RTL
VTL
=
× VREF(1.24V)
RTHL + RTH + RTL
Figure 4 Temperature Detection Block
When the detected temperature goes out of the range of the set values, charging stops, and LED-R and LED-G turn off.
After temperature is restored, charging recommences in line with battery voltage status.
The TDET pin is also used for the battery-connected detection feature.
The battery-connected detection feature determines that a battery is connected if TDET pin voltage is no greater than
1.15V(typ.), and commences charging.
Ver.2006-08-03
- 10 -
NJW4100
■FEATURE DESCRIPTION (CONTINUED)
5. Delay Circuits (each detection block)
Each detection block has a delay circuit and extra features for preventing malfunction due to noise or excess signals.
Table 1 Delay Circuits and Extra Features.
Detection Block
Low Voltage Malfunction
Prevention Circuit
Delay Circuit
Extra Feature
Hysteresis
Hysteresis
Hysteresis
CHG-SW
Battery Connected
Detection
Delay I
Temperature Detection
Full Charge Detection
Re-Charge Detection
Low Voltage Detection
Over Voltage Detection
Quick Charge Detection
Hysteresis
–
–
Hysteresis
Latch
Delay II
Hysteresis
The delay circuit block receives a signal from the timer circuit to fix a delay time.
For details on the relationship between the delay time and capacitors see “6. Timer Circuit Block”.
6. Timer Circuit Block (C1 pin, C2 pin)
OSC1 is used for the timer that is used for pre-charge, 2mAcharge and the like. OSC2 is used for the quick charge timer.
You can change the time of the timers with external capacitors. Tables 2, 3 show the relationship between capacitance and
time.
Table 2 C1, C2 Oscillation Cycle t
Capacitance (C1, C2)
Oscillation Cycle
(OSC1, OSC2)
4700pF
0.01µF
0.022µF
0.047µF
t = 4.7ms
t = 10ms
t = 22ms
t = 47ms
Table 3 Timer Time
Block Name
Parameter
Calculation
Examples
Formula
tx210
tx217
tx27
2mA Charge Timer
Pre-Charge Timer
LED R Blinking Cycle
Delay I
Delay II
Quick Charge Timer
10.2s
22min.
1.28s
0.32s
0.16s
Pre-Charge Timer
C1=0.01µF
C2=0.01µF
tx25
tx24
Quick Charge Timer
tx220
2hours 55 min.
Use capacitors the have good temperature characteristics in the OSC block.
Capacitor deviation will cause timer errors.
Ver.2006-08-03
- 11 -
NJW4100
■FEATURE DESCRIPTION (CONTINUED)
In each charge mode if time-over occurs charging is prohibited and LED-R blinks. Turning the power off to release UVLO,
battery connection detection, or CHG-SW switching will enable the charge sequence to restart.
NJW4100 incorporates a test mode that shortens the timer block function's test time by 1/150,000.
To operate in test mode set the TH pin voltage to a value no greater than that of the TL pin. In test mode, regardless of the
external timing capacitors C1, C2, the internal timer clock frequency will operate in a range of approximately 200kHz to
300kHz. The following shows calculation values when the oscillating frequency is 250kHz (4µs cycle).
Table 4. Timer Times in Test Mode.
Example
(t = Appx. 4µs)
Appx. 4ms
Calculation
Formula
Block Name
Parameter
2mA Charge Timer
Pre-Charge Timer
LED R Blinking Cycle
Delay I
Delay II
Quick Charge Timer
tx210
tx217
tx27
Appx. 0.5s
Pre-Charge Timer
Appx. 0.5ms
Appx. 0.13ms
Appx. 64µs
Appx. 4.2s
tx25
tx24
Quick Charge Timer
tx220
When the TDET pin voltage is approximately 1.2V or greater, the pre-charge / quick charge timers operate normally.
If you want to further reduce the test time, setting TDET pin voltage makes it possible to run each of the timer counters
divided in half. When the TDET pin is approximately 0.3V or less, the first half of the counter is bypassed. When the voltage
is approximately greater than 0.4V and less than 1.1V, the second half of the counter is bypassed.
Table 5. Reduced Test Time Mode
Calculation
Parameter
Example (t =Appx. 4µs)
Formula
tx28 , tx28
tx29 , tx210
Pre-Charge Timer
Quick Charge Timer
Appx. 1ms, Appx. 1ms
Appx. 2ms, Appx. 4ms
Ver.2006-08-03
- 12 -
NJW4100
■
FEATURE DESCRIPTION (CONTINUED)
7. Reference Voltage Block (VREF pin)
This block generates 1.24V and 4.2V reference voltages. The VREF pin outputs 1.24V. In addition to the IC internal
reference voltage, this is also used as a reference voltage for charge current setting and temperature detection setting.
8. Power Block, Under Voltage Lockout Circuit (UVLO) Block (V+ pin, GND pin)
An integrated Under Voltage Lockout circuit prevents IC malfunction when power is turned on or off. This circuit
incorporates a 200mV hysteresis width to prevent chattering.
As required, insert a bypass capacitor near the IC's V+ pin when there is power line noise or when wires are long.
9. LED Block (LED-R pin, LED-G pin)
Input
The 2 LEDs can indicate charge status. (Figure 5)
The LED drive circuit is an open collector output configuration.
Therefore, it is easy to set a constant LED drive current with resistance values.
RLED
ILED
The expression for setting the current that flows through the LEDs is shown below.
VF-LED
ILED-G
or
ILED-R
≒
(Vcc - VF-LED - VOL-G) / RLED
LED-G
LED-R
≒
(Vcc - VF-LED - VOL-R) / RLED
Figure 5. LED Drive Circuit
Ver.2006-08-03
- 13 -
NJW4100
■FLOW CHART
Start
NO
NO
Check
Adapter Voltage
V+>2.4V
Abnormal Charging
Prohibited
LED-G: OFF
LED-R: OFF
YES
Adaptor voltage, Battery connection,
Battery Temp. and Battery voltage are
monitored during charging.
Check
Battery Connection
CHG-SW Pin=GND
YES
NO
Check
Battery Connection
V
TDET<1.15V
YES
NO
NO
Check
Battery Temp.
VTL<VTDET<VTH
YES
Check
Battery Voltage
VBAT<VOV
YES
NO
Check
Voltage
V
BAT>VQ-CHG
YES
Quick Charge
Timer Start
Pre-Charge
Timer Start
LED-G: OFF
LED-R: ON
Quick Charge Start
LED-G: OFF
2mA Charge: ON
LED-R: ON
YES
YES
Time Out
Time Out
NO
NO
NO
Check
Battery Voltage
VBAT>VLV
NO
Check
Full Charge
IBAT<IF-CHG
YES
YES
Pre-Charge Start
2mACharge: OFF
Charge Complete
LED-G: ON
LED-R: OFF
YES
Time Out
NO
NO
Check
Battery Voltage
VBAT<VR-CHG
NO
Battery
YES
Abnormal Charging
Battery Voltage
VBAT>VQ-CHG
Prohibited
LED-G: OFF
LED-R: Blinking
YES
When charging is prohibited, one of the
following action resumes the charging;
Unplug and plug power supply
Remove and set batteries
Charge-SW ON/OFF
Ver.2006-08-03
- 14 -
NJW4100
■TIMING CHART
Charge Control Voltage
Re-Charge Detecting Voltage
Battery
Voltage
Quick Charge
Detecting Voltage
0V
Constant
Voltage
Charge
Pre-
Quick
Full
Re-
Charge
Charge
Charge
Charge
Quick Charge Current
Charging
Current
Pre-Charge Current
Full Charge Current
CHG-SW
LED-R
OFF
OFF
ON
ON
OFF
ON
ON
LED-G
OFF
OFF
■The timing chart at the time of protection circuit operation
In addition to a charge timing chart, a protection circuit with a built-in IC operates according to the state and
circumference environment of a battery.
The timing chart when various protection circuits operate is as follows.
●Pre-charge time out
●Quick charge time out
Charge Voltage
Quick charge detecting voltage
Battery
Voltage
Battery
Voltage
0V
0V
Quick charge
3h*
Pre-charge
22min*
Charge
Current
Charge
Current
Full charge
detection
Inactive
Active
Inactive
Inactive
Active
Inactive
CNT
CNT
CHG-SW
LED-R
OFF
OFF
ON
ON
CHG-SW
LED-R
LED-G
OFF
OFF
ON
ON
ON/OFF 1.28s*
OFF
ON/OFF
LED-G
OFF
*C1=0.01 F
*C2=0.01 F
µ
µ
Ver.2006-08-03
- 15 -
NJW4100
●Low voltage battery (Return)
●Low voltage battery (Abnormalities)
Battery Voltage
Battery Voltage
Low voltage
Low voltage
detecting voltage
detecting voltage
0V
0V
Pre-charge
Active
Charge
Current
2mA
Charge
Current
2mA charge
10s*
2mA charge
10s*
Charge
STOP
2mA
Inactive
Inactive
CNT
CNT
CHG-SW
LED-R
OFF
OFF
ON
CHG-SW
LED-R
OFF
OFF
ON
ON
ON
ON/OFF 1.28s*
LED-G
OFF
LED-G
OFF
*C1=0.01 F
*C1=0.01 F
µ
µ
●Over charge battery
●Abnormalities in temperature
Battery
Voltage
Over charge detecting
Battery
Voltage
0V
0V
Charge
Current
Charge
Charge STOP
Charge STOP
Inactive
Current
Inactive
CNT
CNT
CHG-SW
LED-R
OFF
OFF
ON
CHG-SW
LED-R
OFF
ON
OFF
ON/OFF 1.28s*
OFF
LED-G
LED-G
OFF
ON
*C1=0.01 F
µ
Temperature
Detecting
Ver.2006-08-03
- 16 -
NJW4100
■OPERATION MATRIX
Over
Time
Battery
Quick
Pre-
2mA
Full
Abnormal
Parameter
Voltage
OUT
Un-connecting Charge Charge
Charge
Charge
Temperature
Error
LED-G
LED-R
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
Blinking
OFF
OFF
Blinking
OFF
Tr.
ON
ON
OFF
Charge
Current
Return
-
Q-CHG P-CHG
2mA
-
-
-
-
-
-
-
-
Re-Charge
Stop
Auto
Stop
-
Latch
Stop
Latch
-
Charge
Timer
Stop
Operate Operate Operate
Operate Operate Operate
Temperature
Detecting
Over
Disregard
Operate
Operate
Operate
Voltage
Detecting
CHG-SW
Battery
Disregard
Operate Operate Operate
Operate
Operate
-
Operate
Stay
Stay
Operate Operate Operate
Operate Operate Operate
Operate
Operate
Re-start
Re-start
Re-start
Re-start
Re-start
Re-start
Setting
Full Charge
Detecting
Disregard
Operate
Stop
Disregard
-
Disregard
Disregard Disregard
Disregard: Detection function is not reflected in control although it is operating.
■LED ON/OFF PATTERN
NJW4100
NJW4101*
NJW4102*
NJW4103*
Parameter
LED-R
LED-G
LED-R
LED-G
LED-R
LED-G
LED-R
LED-G
Adaptor Voltage
Detecting
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
BLINKING
ON
OFF
OFF
OFF
BLINKING
ON
OFF
OFF
OFF
Charging
ON
OFF
OFF
BLINKING
BLINKING
OFF
ON
OFF
OFF
OFF
ON
OFF
BLINKING
BLINKING
BLINKING
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
BLINKING
BLINKING
ON
ON
BLINKING
BLINKING
BLINKING
Full Charging
Temperature Error
Over Voltage Detecting
Time Out
*Available upon request.
Ver.2006-08-03
- 17 -
NJW4100
■The example of application
●Specification
Input Voltage
:more than 5V
:4.2V
:100mA
:750mA
:60mA
Charge Battery
:Lithium-ion Battery 1cell
Charge Control Voltage
Pre-Charge Current
Quick Charge Current
Full Charge Current
Quick Charge Start Voltage
Re-Charge Detection Voltage
Over Voltage Detection Voltage
:3.07V
:3.99V
:4.305V
Charge Temperature Range : 0°C~45°C (thermistor :10kΩ, B value 3435)
●The example of application circuit
CIN
RCS
COUT
Q1
SBD
0.2Ω 1/2W
Option
47 F
µ
VIN
BATT+
BATT-
REB
10kΩ
RBC
CNF
GND
390Ω
1,000pF
VREF
VREF
IC NJW4100
RP1
RQ1
110kΩ
130kΩ
1
P-CHG
NFB
CNT
GND
NC
20
Q-CHG
CS1
RP2
RQ2
7.5kΩ
120kΩ
2
3
19
18
17
16
15
14
13
12
11
RB1
0Ω (Short)
VREF
CS2
VS
RB2
Open
4
RR
RG
RF1
2.2kΩ
910Ω
110kΩ
5
VREF
VREF
V+
VIN
C
RF2
RTHL
RTDET
9.1kΩ
6
F-CHG
LED-G
LED-R
C1
22kΩ
15kΩ
0.1 F
µ
7
TDET
TH
TDET
8
LED1
Red
LED2
Green
RTH
9
TL
24kΩ
10
C2
CHG-SW
RTL
SW
15kΩ
C1
C2
0.01 F 0.01 F
µ
µ
Q1
: 2SA1244
(Toshiba)
(Nihon Inter)
(Susumu)
SBD
RCS
CIN
: EC30LA02
: RL1632R-R200-F
: MVS16VC47MF46
(Nippon chemi-con)
Ver.2006-08-03
- 18 -
NJW4100
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver.2006-08-03
- 19 -
相关型号：
©2020 ICPDF网 联系我们和版权申明