Texas Instruments bq24750, User Manual

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Introduction
Jack Description
JP4–1 Pull-up voltage source
LEDPWR
JP4–2 LED Pull-up power line
JP5–VEXT External power supply
JP5–HI Pull-up voltage source
JP5–VREF IC reference voltage VREF
JP6–1 REGN pin (24)
4.2V REG
JP6–2 VADJ pin (12)
JP7–VREF IC reference voltage VREF
JP7–VDAC VDAC pin (11)
JP7–EXT External VDAC voltage
JP8–1 BATDRV pin (14) output
BATDRV
JP8–2 LED drive
JP9–1 Pull-up voltage source
CHGDISA
JP9–2 CHGEN pin (1)
JP10–HI Pull-up voltage source
JP10–CELLS CELLS pin (20) output
JP10–LO Ground
1.4 Control and Key Parameters Setting
Factory Setting
–001, –004, –002, –003,
Jack Description
or –005 –006, or –007
(bq24750/50A/52) (bq24751/51A/51B/53)
Pin 8 connection
JP1 1-2 (751) : OVPSET Jumper on 2-3 Jumper on 1-2
2-3 (750) : TS
JP2 Disable LEARN mode when on Jumper Off Jumper On
JP3 JP3 The conduction of the AC MOSFET is indicated by LED when on Jumper On Jumper On
The pull-up power source supplies the LEDs when on. LED has no
JP4 Jumper On Jumper On
power source when off.
Pull-up power source setting
Jumper on 1-2 Jumper on 1-2
JP5 1-2: Use VREF as the pull-up source
(HI and VREF) (HI and VREF)
2-3: Use external power supply as the pull-up source
JP6 Connect REGN to VADJ when on Jumper On Jumper On
VDAC voltage source setting
Jumper on 1-2 Jumper on 1-2
JP7 1-2 : Connect VREF to VDAC
(VREF and VDAC) (VREF and VDAC)
2-3 : Connect external voltage source to VDAC
JP8 The conduction of the battery MOSFET is indicated by LED when on Jumper On Jumper On
JP9 Disable charge process when on Jumper On Jumper On
Number of cells selection
1-2 (HI-CELLS) : 4 cells
JP10 Jumper on 2-3 (3 cells) Jumper on 2-3 (3 cells)
2-3 (CELLS-LO) : 3 cells
Open: 2 cells
3 SLUU283D – May 2007 – Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
Notebook Charger and System Power Selector
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