Datasheet

bq76925
+
-
+
-
+
-
+
-
+
-
+
-
Cell MUX
Level Shift
Balance
Control
R
IN
C
IN
R
IN
R
IN
R
IN
R
IN
R
IN
R
IN
C
IN
C
IN
C
IN
C
IN
+
–
Amp
–
+
Amp
I
THRESH
+
–
Comp
VREG
POR
I2C
EE
REGS
Cell Select
Bal Select
Thresh Select
BAT
VC6
VC5
VC4
VC3
VC2
VC1
VC0
SENSEN
SENSEP
VCTL
V3P3
SCL
SDA
VREF
VTB
VCOUT
VIOUT
ALERT
PACK+
PACK–
R
SENSE
3.3 V
µC / LED
Supply
ADC
Reference
ADC Ch 1
Temp
ADC Ch 2
Cell Voltage
ADC Ch 3
Pack Current
Overcurrent
Alert
C
REF
C
TH
C
OUT
C
OUT
R
NTC
R
TH
I2C
Interface
Bypass FET (optional)
VSS
REF×0.5
1.5 / 3.0
V
REF
VCOUT Select
Ref Select
NTC Bias Switch
Gain = 0.3, 0.6
Gain = 4, 8
25,50,75,100,…,400 mV
C
V3P3
–
+
Amp
Gain = 1
Gain Select
REF×0.85
Wakeup
Detect
Polarity Select
Shunt Select
R
VCTL
R
SENSEN
R
SENSEP
C
SENSE
Output Range = 1
V
, 2
V
C
IN
C
IN
Hold-up
circuit
(optional)
R
BAT
D
BAT
Z
BAT
C
BAT
bq76925
www.ti.com SLUSAM9B –JULY 2011– REVISED DECEMBER 2011
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
(1)
T
A
PACKAGE PART NUMBER
(2)
20-Pin PW bq76925PW
–25°C to 85°C
24-Pin RGE bq76925RGE
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) The PW and RGE package options are also available taped and reeled. Add an R suffix to the device type (e.g., bq76925PWR for 2000
units per reel). See applications section of data sheet for layout information.
Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): bq76925