BQ28400PWR Datasheet, PDF (5/24 Pages) Texas Instruments – Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection

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RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
PIN
Supply voltage
PACK
BAT
V_(STARTUP)
Minimum startup voltage
Start up voltage at PACK
VC1, BAT
VC2
V_IN
Input Voltage Range
VC1 – VC2
PACK
SRP to SRN
C_(REG27)
T_OPR
External 2.7 V REG capacitor
Operating temperature
bq28400
SLUSA61A – OCTOBER 2010 – REVISED DECEMBER 2010
MIN
3.8
V_VC2
V_VSRP
0
–0.3
1
–20
NOM
5.2
MAX
V_BAT + 5
V_VC2 + 5
5.5
V_VC2 + 5
V_VSRP + 5
5
18.75
1
85
UNIT
V
V
V
V
V
V
V
µF
°C
ELECTRICAL CHARACTERISTICS
Typical values stated where T_A = 25ºC and V_BAT = V_PACK = 7.2 V, Min/Max values stated where T_A = –20ºC to 85ºC and V_BAT
= V_PACK = 3.8 V to 18.75 V over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITION⁽¹⁾
MIN
TYP
MAX
UNIT
General Purpose I/O
V_IH
High-level input
voltage
SMBD, SMBC, PRES
2
V
V_IL
Low-level input
voltage
SMBD, SMBC, PRES
0.8
V
V_OH
V_OH(FUSE)
t_R(FUSE)
I_O(FUSE)
Z_O(FUSE)
Output voltage high PRES, I_L = –0.5 mA
High level Fuse output ^{VBAT = 3.8 V to 9 V, CL = 1 nF}
V_BAT = 9 V to 10 V, C_L = 1 nF
FUSE output rise time C_L = 1 nF, V_OH(FUSE) = 0 V to 5 V
FUSE output current FUSE active
FUSE output
impedance
V_REG27 – 0.5
V
3
V_BAT – 0.3
8.6
V
7.5
8
9
10
µs
–3
mA
2
6
kΩ
V_{FUSE_DET}
FUSE Detect Input
Voltage
0.8
2
3.2
V
V_OL
Low-level output
voltage
SMBD, SMBC, TS1, I_L = 7 mA
0.4
V
C_IN
I_(VOUT)
I_LKG(VOUT)
I_LKG
R_PD(SMBx)
Input capacitance
VOUT source currents V_O active, V_O = V_REG27 – 0.6 V
VOUT leakage current V_O inactive
Input leakage current SMBD, SMBC, PRES, TS1
SMBD and SMBC,
pull-down resistor
T_A = –20°C to 100°C
5
pF
–3
mA
–0.2
0.2
µA
1
µA
600
950
1300
kΩ
R_PAD
Pad resistance
TS1
Supply Current
87
110
Ω
I_CC
Normal Mode
No flash memory write, No I/O activity
CPU=HALT
I_LPM
Low-Power Mode
CHG=DSG=PCHG=OFF
LDO ON but no load, no communication, BAT = 7.2 V
400
µA
55
µA
I_SHUTDOWN Shutdown Mode
REG27 Power On Reset
T_A = –20°C to 110°C
0.5
1
µA
V_{REG27IT–}
V_REG27IT+
Flash
Negative-going voltage input, at REG27
Positive-going voltage input, at REG27
2.22
2.29
2.34
V
2.25
2.5
2.6
V
Data retention
10
Years
(1) By default: SMBus has internal pull-down.
Copyright © 2010, Texas Instruments Incorporated
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