BQ24650 Datasheet, PDF (2/33 Pages) Texas Instruments – Synchronous Switch-Mode Battery Charge Controller for Solar Power With Maximum Power Point Tracking

bq24650
SLUSA75 – JULY 2010
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
TYPICAL APPLICATION
Solar Cell
Half Panel
D1
VIN
R5
2Ω
C1
2.2µF
R9
5.23kΩ
Pack
Thermistor
R10
CE
30.1kΩ
C3
R3 _1µF
499kΩ
Q3 R4
36kΩ
VIN
D3
R7:10kΩ
R8:10k Ω
D4
R6: 10Ω
VCC
bq24650
VREF
REGN
MPPSET BTST
TS
HIDRV
TERM_EN
PH
LODRV
GND
STAT1
SRP
STAT2 _Thermal ^SRN
Pad VFB
C2
1uF
C4:1µF
D2
Q1
C5
100nF
C6
10uF
R_SR
L: 10µH 20mΩ
Q2
C8
10µF
C7
0.1µF
Battery Pack
C9
4.7µF
R2
C10
499kΩ
22pF
R1
100kΩ
Solar Panel 21 V, MPPT = 18 V, 2-cell, I_CHARGE = 2 A, I_PRECHARGE = I_TERM = 0.2 A, TS = 0 - 45°C
Figure 1. Typical System Schematic
PART NUMBER
bq24650
ORDERING INFORMATION
PACKAGE
ORDERING
NUMBER
(Tape and Reel)
PART MARKING
16-Pin 3.5×3.5 mm
QFN
bq24650RVAR
bq24650RVAT
PAS
QUANTITY
3000
250
2
Submit Documentation Feedback
Product Folder Link(s): bq24650
Copyright © 2010, Texas Instruments Incorporated