BQ25040 Datasheet, PDF (3/25 Pages) Texas Instruments – 1.1A, Single-Input, Single Cell Li-Ion Battery Charger With 50mA LDO and 2.3A Production Test Support

bq25040
www.ti.com ...................................................................................................................................................... SLUS910B – MARCH 2009 – REVISED MARCH 2009
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
V_IN
I_IN
I_IN(PTM)
I_O
I_O(PTM)
T_J
R_ISET
R_IFULL
IN voltage range
IN operating voltage range
Input current, IN pin (charging)
Input current PTM, IN pin, 20% duty cycle with 10ms period
Output current in charge mode, BAT pin (charging)
Output current in PTM, BAT pin, 20% duty cycle with 10 ms period
Junction Temperature
Fast-charge current programming resistor
Charge Done threshold
MIN
4.35
4.35 ⁽¹⁾
0
475
1
(1) Operation with V_IN < 5V may result in reduced performance due to dropout operation for LDO and/or charger.
MAX
26
6.7
1.1
2.3
1.1
2.3
125
5360
10
UNITS
V
A
A
A
A
°C
Ω
kΩ
ELECTRICAL CHARACTERISTICS
Over junction temperature range 0°C ≤ T_J ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
INPUT
V_UVLO
V_HYS(UVLO)
V_IN(PG)
V_HYS(INPG)
t_DGL(NO-IN)
Undervoltage lock-out
Hysteresis on UVLO
Input Power Good detection threshold
V_IN(PG) above V_BAT
Hysteresis on V_IN(PG)
Delay time, input power loss to charger
turn-off
V_IN: 0V → 4V
V_IN: 4V → 0V
(Input power good if V_IN > V_BAT + V_IN(PG))
V_BAT = 3.6V, V_IN: 3.5V → 4V
V_BAT = 3.6V, V_IN: 4V → 3.5V
Time measured from V_IN: 5V → 2.5V,
1µs fall-time
3.15
3.30
3.45
190
240
290
30
75
150
18
32
54
32
V_OVP
V_HYS(OVP)
t_BLK(OVP)
t_REC(OVP)
V_IN(DPM)
Input overvoltage protection threshold
Hysteresis on OVP
Input overvoltage blanking time
Input overvoltage recovery time
Input DPM threshold
V_IN: 5V → 7V
V_IN: 7V → 5V
Time measured from V_IN: 11V → 5V
1µs fall-time to CHG = LO, V_BAT = 3.5V
VIN Falling, I_CHRG reduced to 90%,
USB100 or USB500 Mode
6.7
6.9
7.1
100
115
500
4.38
4.43
4.48
USB100 mode input current limit
I_IN
USB500 mode input current Limit
ISET SHORT CIRCUIT TEST
USB100 programmed by EN/SET,
R_ISET > 1.1kΩ , V_BAT = 3.5V
USB500 programmed by EN/SET,
R_ISET > 1.1kΩ , V_BAT = 3.5V
90
95
100
380
395
415
R_ISET
t_DGL(SHORT)
Continuous Monitor
Deglitch time transition from ISET to IC
latched off
R_ISET= 500Ω → 200Ω, IC latches off after
t_DGL(SHORT)
320
460
1.5
I_LIM
Current limit with ISET shorted
QUIESCENT CURRENT
V_ISET = 0V, IC latches off after t_DGL(SHORT)
1.7
2.0
2.2
I_BAT(PDWN)
Battery current into BAT
V_IN = 0 V
1
I_IN(STDBY)
Standby current into IN pin
V_IN ≤ V_OVP
V_IN = 10V
150
350
I_CC
Active supply current, IN pin
V_IN = 6V, no load on BAT pin,
V_BAT > V_BAT(REG), IC enabled
3
BATTERY CHARGER FAST-CHARGE
V_BAT(REG)
I_CHRG
Battery charge voltage
Programmed Output “fast charge” current
range
V_BAT(REG) > V_BAT > V_LOWV, V_IN = 5V,
R_ISET = 475Ω to 5.36kΩ,
User Programmable set by EN/SET
4.16
100
4.20
4.24
1100
V_DO(IN-BAT)
I_CHRG
V_IN – V_BAT
Output “fast charge” formula
V_IN = 4.1V and I_BAT = 1A
V_BAT(REG) > V_BAT > V_LOWV, V_IN = 5 V, User
Programmable set by EN/SET
280
512
K_ISET/R_ISET
UNIT
V
mV
mV
mV
ms
V
mV
µs
µs
V
mA
Ω
ms
A
µA
µA
mA
V
mA
mV
A
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