NJW4108 IC ( ) NJW4108 1cell/2cell IC NJW4108V / Bi-CMOS NJW4108V : SSOP20 P-CHG 1 20 Q-CHG NFB 2 19 CS1 CNT 3 18 CS2 GND 4 17 VS NC 5 16 VREF F-CHG 6

Transcription

1 IC ( ) 1cell/2cell IC V / Bi-CMOS V : SSOP20 P-CHG 1 20 Q-CHG NFB 2 19 CS1 CNT 3 18 CS2 GND 4 17 VS NC 5 16 VREF F-CHG 6 15 V TDET 8 13 TH C TL C V - 1 -

2 (Ta=25 C) V V C1 V C1 +5 V C2 V C2 +5 V TDET V TDET +5 V CNT I SINK-CNT 50 ma I SINK-G 20 ma I SINK-R 20 ma P D SSOP20 :300 mw T opr C T stg C (V + =5V, Ta=25 ) V OP 14 V I CC : OPEN 2 3 ma V T V V T V V HYS mv I REF =0mA V I REF =0mA 1mA 10 mv V Q-CHG VS: L H V R-CHG VS: H L V BAT x 0.71 V BAT x 0.94 V BAT V BAT x 0.73 V BAT x 0.95 V BAT x 0.75 V BAT x 0.96 V OV VS: L H x x x V -CV VS V VS I VS VS=4.2V na V T-TDET TDET 1.15 V 2mA I CHG1 VS=1V ma V V LV VS: L H BAT V BAT V BAT V x x x V BAT V BAT V V - 2 -

3 (V + =5V, Ta=25 ) A V1 CS1=3.8V, CS2=3.6V db A V2 CS2=VS=4.2V, V F-CHG =96mV db F-CHG V F-CHG CS2=VS=4.2V 48 mv CS1 I CS1 CS1=4.2V na CS2 I CS2 CS2=4.2V na CNT V OL-CNT I SINK=20mA V CNT I LEAK-CNT V + =14V 1 µa T BLINK-G V TL >V TDET, V TDET <V TH,T=4µs ms LED V OL-G I SINK=10mA V I LEAK-G V + =14V 1 µa V OL-R I SINK=10mA V I LEAK-R V + =14V 1 µa OSC1 T1 C1=C2=0.01µF % OSC2 T % V SW V V SW- 1 V R PULL-UP kω - 3 -

4 CS2 R P1 R Q1 V + NFB P-CHG R P2 R Q2 Q-CHG 12dB CNT CS1 Rcs V 1 CVCC- CS V VREF2 CVCC- VREF2 VS R B1 R B2 R B1 R B2 GND C1 C2 OSC 1 OSC 2 CVCC- CS1 CLK Quick/ Pre-Charge Charge / 2mA Charge Start/Stop Time Out Start/Stop Time Out Battery Voltage Detection Temp. Detection 6dB VBAT x 0.73 VBAT x 0.95 VBAT x VBAT x F-CHG TDET TH R F1 R F2 Charge - TL RPULL-UP V + V + Lithium Ion Battery GND - 4 -

5 1 P-CHG 2 NFB 3 CNT PNP 4 GND 5 NC 6 F-CHG 7 LED 8 LED 9 C1 2mA LED 10 C2 11 / 12 TL 13 TH 14 TDET 15 V + 16 VREF 17 VS 18 CS CS Q-CHG / R B1 + RB2 V BAT = x -CV (4.2V) RB2 4.2V 8.4V V LV = V BAT x V 3.99V V Q-CHG = V BAT x V 6.13V V R-CHG = V BAT x V 7.98V V OV = V BAT x V 8.61V RP2 I P-CHG = ( x (1.24V) / 4) / R CS RP1 + RP2 100mA (at. R P1 :232kΩ, R P2 :16kΩ, R CS =0.2Ω) RQ2 I Q-CHG = ( x (1.24V) / 4) / R CS RQ1 + RQ2 750mA (at. R Q1 :128kΩ, R Q2 :120kΩ, R CS =0.2Ω) RF2 I F-CHG = ( x (1.24V) / 8) / R CS RF1 + RF2 60mA (at. R F1 :114.4kΩ, R F2 :9.6kΩ, R CS =0.2Ω) - 5 -

6 -CV (V) (V + =5V, VS ) Ta ( o C) (V) (V + =5V, I =0mA) REF Ta ( o C) A V1 (db) (V + =5V, CS1=3.8V, CS2=3.6V) Ta ( o C) (V) V + =5V) V SW_ V SW_ Ta ( o C) 3 (V + =5V, :OPEN) I CC (ma) Ta ( o C) - 6 -

7 0.5 CNT (V + =5V, Ta=25 o C) 0.5 LED (V + =5V, Ta=25 o C) V OL-CNT (V) I SINK (ma) V OL (V) I SINK (ma) OSC1, OSC2 (ms) (V + =5V, Ta=25 o C) C1, C2 (µf) OSC1, OSC2 (ms) (V + =5V, C1=C2=0.01µF) Ta ( o C) - 7 -

8 VS VS ( ) VS V BAT VS R B1 R B2 R B1 + R V BAT = RB2 B2 x -CV (4.2V) OR R B1 R B1 =R B2 = R B1 =R B2 VS Battery Voltage Detection CVCC- VREF2 VBAT x 0.73 VBAT x 0.95 VBAT x VS R B2 R B1 R B2 VS VS V OV =V BAT (typ.) VBAT x UVLO 2mA VS CS1 2mA 2mA V LV =V BAT (typ.) 2mA 12dB CS1 Rcs CS2 2mA CS1 2mA 2mAUVLO V BAT x mA VS R B1 R B2 VS V R-CHG =V BAT 0.95 (typ.) - 8 -

9 CS1 CS2 R CS CS1 CS2 CS1 CS2 12dB ( ) P-CHG Q-CHG VS V BAT V BAT V BAT 0.73 V BAT 0.73 V BAT P-CHG Q-CHG R CS2 P1 R Q1 I P-CHG = ( R I Q-CHG = ( R RP2 P1 + RP2 RQ2 Q1 + RQ2 x (1.24V) / 4) / R CS x (1.24V) / 4) / R CS OR NFB P-CHG R P2 R Q2 Q-CHG 12dB CS1 Rcs F-CHG I F-CHG F-CHG RF2 I F-CHG = ( x (1.24V) / 8) / R CS RF1 + RF2 CVCC- Quick/ Pre-Charge / 6dB VBAT x 0.73 CS2 VS F-CHG R B1 R B2 R F1 R F2-9 -

10 CNT CNT PNP 2mA PNP TDET TH TL TL TH R THL, R TH, R TL NTC 4 TDET TL TH V TL < < V TH TDET RT V TDET = V R + R TDET T REF(1.24V) Temp. Detection TDET TH R THL RTDET TH RTH + RTL V TH = V R + R + R THL TH TL REF(1.24V) Charge - TL R TH R TL R T TL RTL V TL = V R + R + R THL TH TL REF(1.24V) V T-TDET=1.15V UVLO Lithium Ion Battery TDET TDET 1.15V(typ.)

11 6 6 C1 C2 OSC1 2mA OSC2 C1, C2 t (C1, C2) (OSC1, OSC2) 4700pF t = 4.7ms 0.01µF t = 10ms 0.022µF t = 22ms 0.047µF t = 47ms 2mA t s t min. LED R t s LED G t s C1=0.01µF t s t s t hours 55 min. C2=0.01µF OSC

12 UVLO 1/150,000 TH TL C1 C2 200kHz 300kHz 250kHz 4µs (t = 4µs) 2mA t ms t s LED R t ms t ms t µs t s TDET 1.2V / TDET TDET 0.3V 0.4V 1.1V (t = 4µs) t 2 8, t 2 8 1ms, 1ms t 2 9, t ms, 4ms

13 VREF 1.24V 4.2V VREF 1.24V IC VREF IC (UVLO) V + GND IC 200mV IC V + LED LED ( ) LED LED LED I (Vcc - V F-LED - V OL-G ) / R LED I (Vcc - V F-LED - V OL-R ) / R LED I LED R LED V F-LED LED

14 V + >2.4V =GND V TL <V TDET <V TH V BAT <V OV V TDET <1.15V V BAT >V Q-CHG : : : : : : : : 2mA : I BAT <I F-CHG V BAT > V LV : : 2mA : V BAT <V R-CHG : : V BAT >V Q-CHG

15 0V IC 0V 22min* 0V 3h* CNT Inactive Active Inactive Inactive Active Inactive CNT / 1.28s* / *C1=0.01µF *C2=0.01µF

16 0V 2mA 2mA 10s* 0V 2mA 2mA 10s* CNT Inactive Active Inactive CNT / 1.28s* *C1=0.01µF *C1=0.01µF 0V 0V CNT Inactive CNT Inactive / 1.28s* *C1=0.01µF / 2.56s*

17 2mA Tr. Q-CHG P-CHG 2mA LED NJW

18 5V 1cell 4.2V 3.07V 100mA 3.99V 750mA 4.305V 60mA k B 3435 V IN C IN 47µF Q1 SBD R CS 0.2Ω 1/2W C OUT Option BATT+ GND R EB 10kΩ R BC 390Ω C NF 1,000pF BATT- R P1 110kΩ 1 IC P-CHG Q-CHG 20 R Q1 130kΩ R P2 7.5kΩ 2 3 NFB CNT CS1 CS R Q2 120kΩ R B1 0Ω (Short) R R 2.2kΩ R G 910Ω R F1 110kΩ R F2 9.1kΩ GND NC F-CHG VS VREF V + TDET V IN C 0.1µF R THL 22kΩ R B2 Open R TDET 15kΩ TDET LED1 Red LED2 Green 8 9 C1 TH TL R TH 24kΩ 10 C2 11 SW R TL 15kΩ C1 C2 0.01µF 0.01µF Q1 2SA1244 SBD EC30LA02 R CS RL1632R-R200-F C IN MVS16VC47MF

19 MEMO