BQ25040 Datasheet, PDF (4/25 Pages) Texas Instruments – 1.1A, Single-Input, Single Cell Li-Ion Battery Charger With 50mA LDO and 2.3A Production Test Support

bq25040
SLUS910B – MARCH 2009 – REVISED MARCH 2009 ...................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range 0°C ≤ T_J ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
K_ISET
Fast charge current factor
PRE-CHARGE AND CHARGE DONE
480
530
580
I_PRECHG
V_LOWV
Pre-charge current
Pre-charge to fast-charge transition
threshold
V_BAT < V_LOWV, V_IN = 5V,
I_CHRG = 250mA to 1100mA
V_BAT < V_LOWV, V_IN = 5V,
I_CHRG = 100 mA to 249 mA
17
20
22
16
20
27
2.4
2.5
2.6
t_DGL1(LOWV)
Deglitch time on pre-charge to fast-charge
transition
50
t_DGL2(LOWV)
Deglitch time on fast-charge to pre-charge
transition
25
I_IFULL
Reference current to IFULL programming
resistor
70
75
80
I_IFULL%
K_IFULL
LDO
Charge done current formula
Charge done current factor
I_IFULL% = 0% to 50% of I_CHRG
V_IN = 5V, I_CHGDONE = 25mA to 600mA
R_IFULL/K_IFULL
180
200
220
V_LDO
LDO Output voltage
I_LDO(MAX)
LDO output current limit
V_DO(LDO)
LDO Dropout voltage
PRODUCTION TEST MODE
V_LDO + V_DO(LDO) ≤ V_IN ≤ V_OVP,
I_LDO = 0mA to 50mA
V_LDO = 0V
V_IN = 4.5V, I_LDO = 50mA
4.75
4.90
5.05
65
125
185
150
300
V_BAT(PTM)
I_LIM(PTM)
Production Test Mode BAT Output Voltage V_IN = 5.5V, I_BAT = 2A for 4ms pulse
Production Test Mode Maximum BAT
output current
4.116
2.3
4.20
4.284
THERMAL REGULATION
T_J(REG)
Temperature regulation limit
T_J Rising
125
T_J(OFF)
Thermal shutdown temperature
T_J Rising
155
T_J(OFF-HYS)
Thermal shutdown hysteresis
T_J Falling
20
EN/SET INTERFACE
t_{EN/SET(Latch)} EN/SET latch timer
t_EN/SET(OFF)
EN/SET latch timer
t_HI(MIN)
High duration on EN/SET
t_LO(MIN)
Low time duration on EN/SET
LOGIC LEVELS ON EN/SET
Timer to lock pulse count
Timer to turn off charge current
1.5
1.5
100
700
100
700
V_IL
Logic LOW input voltage
V_IH
Logic HIGH input voltage
R_PULLDOWN
EN/SET pulldown resistor
LOGIC LEVELS ON CHG and PG
See Note ⁽¹⁾
0
0.4
1.4
6.0
260
V_OL
Output LOW voltage
I_IH
Leakage current
I_SINK = 5mA
V_CHG = V_PG = 5V
0.425
1
(1) No specified low without an external pulldown.
UNIT
AΩ
%I_CHG
V
µs
ms
µA
%
Ω/%
V
mA
mV
V
A
°C
°C
°C
ms
ms
µs
µs
V
V
kΩ
V
µA
4
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