IC ( ) AC-DC 1cell/2cell IC / 1 M / Bi-CMOS M : DMP20 P-CHG 1 20 Q-CHG NFB 2 19 CS1 TX-SW 3 18 CS2 GND 4 17 VS PC 5 16 VREF ADP 6 15 V + 7 14 TDET 8 13 TH C1 9 12 TL C2 10 11 CHG-SW M - 1 -
(Ta=25 C) V + +15 V C1 V C1 +5 V C2 V C2 +5 V TDET V TDET +5 V TX-SW I SINK-SW 50 ma PC I SINK-PC 50 ma P D DMP20 :300 mw T opr -20 +85 C T stg -40 +125 C (V + =5V, Ta=25 ) V OP 2.7 14 V I CC CHG-SW: OPEN 2 3 ma V T- 2.2 2.3 2.4 V V T- 2.0 2.1 2.2 V V HYS 100 200 300 mv V REF I REF =0mA 1.228 1.24 1.253 V V REF 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 1.015 x 1.025 x 1.035 V V REF-CV VS 2.08 2.1 2.12 V V REF-ADP 1.228 1.24 1.253 V VS I VS VS=2.1V 50 500 na V T-TDET TDET 1.10 1.15 1.20 V 2mA I CHG1 VS=1V 1 2 3 ma V V LV VS: L H BAT V BAT V BAT V x 0.505 x 0.525 x 0.545 V BAT V BAT V V - 2 -
(V + =5V, Ta=25 ) A V1 CS1=3.8V, CS2=3.6V 11.5 12 12.5 db V F CS2=4.2V, VS=2.1V 8 12 16 mv CS1 I CS1 CS1=4.2V 10 500 na CS2 I CS2 CS2=4.2V 10 500 na V OL-PC I SINK=20mA 0.2 0.5 V PC I LEAK-PC V + =14V 1 µa TX-SW TX-SW V OL-SW I SINK=20mA 0.2 0.5 V TX-SW I LEAK-SW V + =14V 1 µa LED V 1.20 1.24 1.28 V V 1.20 1.24 1.28 V OSC1 T1 C1=C2=0.01µF -10 +10 % OSC2 T2-10 +10 % CHG-SW V SW- 0.25 V V SW- 1 V R PULL-UP 300 500 700 kω - 3 -
V REF R A1 PC R P1 R Q1 R A2 R P2 R Q2 V + PC ADP NFB P-CHG Q-CHG VREF1 12dB TX-SW CS1 Rcs V REF VREF1 1 1.24V CS2 VREF2 2 2.1V VREF2 VS R B1 R B2 GND C1 C2 OSC 1 OSC 2 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 1.025 VBAT x 0.525 R B1 = R B2 R B1 = 3 R B2 TDET TH V REF VREF1 Charge - V + TL RPULL-UP V + Lithium Ion Battery VREF1 GND CHG-SW - 4 -
1 P-CHG 2 NFB 3 TX-SW 4 GND 5 PC 6 ADP 7 LED 8 LED 9 C1 2mA LED 10 C2 11 CHG-SW / 12 TL 13 TH 14 TDET 15 V + 16 VREF 17 VS 18 CS2 2 19 CS1 1 20 Q-CHG / R A1 + RA2 V ADP = x V REF-ADP (1.24V) RA2 5. 1 R B1 + RB2 V BAT = x V REF-CV (2.1V) RB2 4.2V 8.4V V BAT x 0.525 2.21V 4.41V V BAT x 0.73 3.07 V 6.13 V V BAT x 0.95 3.99 V 7.98 V V BAT x 1.025 4.305 V 8.61 V RP2 I P-CHG = ( x V REF (1.24V) / 4) / R CS RP1 + RP2 100mA (at. R P1 :232kΩ, R P2 :16kΩ, R CS =0.2Ω) RQ2 I Q-CHG = ( x V REF (1.24V) / 4) / R CS RQ1 + RQ2 750mA (at. R Q1 :128kΩ, R Q2 :120kΩ, R CS =0.2Ω) I F-CHG = (96mV / 8) / R CS (at. R CS =0.2Ω) 60mA - 5 -
V REF-CV (V) 2.12 2.11 2.1 2.09 (V + =5V, VS) 2.08-50 -25 0 25 50 75 100 125 Ta ( o C) V REF-ADP (V) 1.25 1.245 1.24 1.235 (V + =5V) 1.23-50 -25 0 25 50 75 100 125 Ta ( o C) V REF (V) 1.25 1.245 1.24 1.235 (V + =5V, I =0mA) REF 1.23-50 -25 0 25 50 75 100 125 Ta ( o C) A V1 (db) 12.6 12.4 12.2 12 11.8 11.6 (V + =5V, CS1=3.8V, CS2=3.6V) 11.4-50 -25 0 25 50 75 100 125 Ta ( o C) 0.8 CHG-SW V + =5V) 3 (V + =5V, CHG-SW:OPEN) (V) 0.7 0.6 0.5 0.4 0.3 V SW_ V SW_ 0.2-50 -25 0 25 50 75 100 125 Ta ( o C) I CC (ma) 2.5 2 1.5 1 0.5 0-50 -25 0 25 50 75 100 125 Ta ( o C) - 6 -
TX-SW,PC (V + =5V, Ta=25 o C) 0.5 0.4 (V) 0.3 0.2 0.1 TX-SW PC 0 0 10 20 30 40 50 I (ma) SINK OSC1, OSC2 (ms) (V + =5V, Ta=25 o C) 100 10 1 0.001 0.01 0.1 C1, C2 (µf) OSC1, OSC2 (ms) 14 13 12 11 10 9 8 7 (V + =5V, C1=C2=0.01µF) 6-50 -25 0 25 50 75 100 125 Ta ( o C) - 7 -
(PC CHG-SW TX-SW ) AC/DC 1 AC/DC AC/DC 1 / CHG-SW TDET CHG-SW TDET 2mA ADP OR AC/DC 1 R A1 PC R A2 PC ADP NFB TX-SW SW ADP V REF1 (1.24V) 12dB L H P-CHG Q-CHG VS V REF2 (2.1V) 1 SW - 8 -
TX-SW SW (ADP ) ADP SW ADP R A1 R A2 R A1 + RA2 V ADP = x V REF-ADP (1.24V) RA2 TX-SW SW SW ADP SW 2mA SW SW - 9 -
VS VS VS V BAT VS R B1 R B2 R B1 + R V BAT = RB2 B2 x V REF-CV (2.1V) OR R B1 R B1 =R B2 R B1 =3 R B2 VS Battery Voltage Detection VREF2 VBAT x 0.73 VBAT x 0.95 VBAT x 1.025 VS R B2 RB1 = RB2 RB1 = 3 RB2 VS VS V OV =V BAT 1.025 (typ.) VBAT x 0.525 UVLOCHG-SW 2mA VS CS1 2mA 2mA V LV =V BAT 0.525 (typ.) 2mA 12dB CS1 Rcs 2mA CS1 2mA 2mAUVLO CHG-SW VBAT x 0.525 2mA CS2 VS R B1 R B2 VS V R-CHG =V BAT 0.95 (typ.) - 10 -
CS1 CS2 R CS CS1 CS2 CS1 CS2 12dB P-CHG Q-CHG VS V BAT V BAT 0.525 V BAT 0.73 V BAT 0.73 V BAT P-CHG Q-CHG V REF R PC P1 R Q1 I P-CHG = ( R I Q-CHG = ( R RP2 P1 + RP2 RQ2 Q1 + RQ2 x V REF (1.24V) / 4) / R CS x V REF (1.24V) / 4) / R CS OR NFB P-CHG R P2 R Q2 Q-CHG 12dB CS1 Rcs F-CHG I F-CHG I F-CHG = (96mV / 8) / R CS Quick/ Pre-Charge / 6dB VBAT x 0.73 CS2 VS F-CHG R B1 R B2 R F1 R F2 V REF - 11 -
TDET TH TL TL TH R THL, R TH, R TL NTC TDET TL TH V TL < V DET < V TH V REF TDET RT V TDET = V R + R TDET T REF(1.24V) Temp. Detection TDET TH R THL R TDET 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) CHG-SW V T-TDET =1.15V UVLO Lithium Ion Battery TDET TDET 1.15V(typ.) - 12 -
CHG-SW 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 2 10 10.2s t 2 17 22min. LED R t 2 7 1.28s C1=0.01µF t 2 5 0.32s t 2 4 0.16s t 2 20 2hours 55 min. C2=0.01µF OSC - 13 -
UVLO CHG-SW 1/150,000 TH TL C1 C2 200kHz 300kHz 250kHz 4µs (t = 4µs) 2mA t 2 10 4ms t 2 17 0.5s LED R t 2 7 0.5ms t 2 5 0.13ms t 2 4 64µs t 2 20 4.2s 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 2 10 2ms, 4ms - 14 -
VREF 1.24V 2.1V VREF 1.24V IC VREF IC (UVLO)V + GND IC 200mV IC V + LED LED LED 1.24V LED LED LED LED I (1.24V-V BE ) / R LED I LED R LED V REF1 (1.24V) LED I (1.24V-V BE ) / R LED - 15 -
V + >2.3V CHG-SW =GND : : TX-SW: V TL <V TDET <V TH V BAT <V OV V TDET <1.15V V BAT >V Q-CHG : : TX-SW: : : TX-SW: : : 2mA : I BAT <I F-CHG : : TX-SW: V BAT <V R-CHG V BAT > V LV 2mA : TX-SW: : : TX-SW: V BAT >V Q-CHG CHG-SW - 16 -
TX-SW CHG-SW IC 22min* 60mA* 3h* TX-SW TX-SW CHG-SW CHG-SW / 1.28s* / C1=0.01µF C2=0.01µF - 17 -
2mA 2mA 10s* 2mA 2mA 10s* TX-SW TX-SW CHG-SW CHG-SW / 1.28s* C1=0.01µF C1=0.01µF TX-SW TX-SW CHG-SW CHG-SW / 1.28s* / 1.28s* C1=0.01µF C1=0.01µF - 18 -
2mA SW-Tr. Q-CHG P-CHG 2mA CHG-SW - 19 -
MEMO - 20 -