BQ2000 Datasheet, PDF (8/18 Pages) Texas Instruments – Programmable Multi-Chemistry Fast-Charge Management IC

bq2000
DC+
D3
MMSD914LT
D4
S1A
C6
47UF
R10
1K
VCC
D6
R2
2K
BZT52-C5V1
D1
RED
C3
10UF
C2
0.1
C7
C4
4.7PF
0.0022UF
R1
U1
1
2
3
4
SNS
VSS
LED
BAT
100K
MOD
VCC
RC
TS
8
7
6
5
bq2000
C8
0.33UF
Q1
FMMT718
Q2
MMBT3904LT1
L1
47UH
D2
ZHCS1000
D5
MMSD914LT
C9
R12
120 OHMS
1000PF
Q3
MMBT3904LT1
R11
220 OHMS
R4
12.4K
C1
0.1
R5
R8
20K
6.81K
BAT+
R6
210K
C5
10UF
R9
221K
THERM
CHEMISTRY
R7
200K
BAT -
R13
1.1K
NOTES: 1. For Li-Ion, the CHEMISTRY is left floating.
For NiCd/NiMH, the CHEMISTRY is tied to BAT-
2. DC input voltage: 9–16V
3. Charge current: 1A
4. L1: 3L Global P/N PKSMD-1005-470K-1A
R3
0.05 OHM
Pn1031a01.eos
Figure 8. Single-Cell Li-Ion, Three-Cell NiCd/NiMH 1A Charger
8