BQ2406X Datasheet, PDF (4/31 Pages) Texas Instruments – 1A SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC WITH THERMAL REGULATION

bq2406x
SLUS689 – JUNE 2006
www.ti.com
ELECTRICAL CHARACTERISTICS (Continued)
over recommended operating, T_J : 0–125°C range, See the Application Circuits section, typical values at T_J : 25°C (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VOLTAGE REGULATION, V(IN) ≥ V_O(REG) + V_(DO-MAX), I_(TERM) < I_(OUT) < I_O(OUT), CHARGER ENABLED, NO FAULT CONDITIONS
DETECTED
V_O(REG)
Output voltage
bq24060/61/62/63/64
bq24065/66 versions only
4.20
V
4.36
V_O(TOL)
Voltage regulation accuracy
T_A = 25°C
–0.5%
–1%
0.5%
1%
V_(DO)
Dropout voltage, V(IN) – V(OUT) I_(OUT) = 1 A
750 mV
CURRENT REGULATION , V(IN) > V(OUT) > V_(DO-MAX), CHARGER ENABLED, NO FAULT CONDITIONS DETECTED
I_O(OUT)
Output current range
V_(BAT) > V_(LOWV), I_O(OUT) = I_(OUT) = K_(SET)×
V_(SET)/R_SET
100
1000 mA
V_(SET)
Output current set voltage
V(ISET) = V_(SET), V_(LOWV) < V(BAT) ≤ V_O(REG)
2.45 2.50 2.55 V
K_(SET)
Output current set factor
100 mA ≤ I_O(OUT)≤ 1000 mA
10 mA ≤ I_O(OUT) < 100 mA
mA kW
Volts
315 335 355
315 372 430
R_ISET
External resistor range
Resistor connected to ISET pin
0.7
10 kΩ
VOLTAGE AND CURRENT REGULATION TIMING, V(IN) > V(OUT) + V_(DO-MAX), CHARGER ENABLED, NO FAULT CONDITIONS
DETECTED, R_TMR = 50K or V(TMR) = OPEN; Thermal regulation loop not active
T_PWRUP(CHG)
Input power detection to full
charge current time delay
Measured from PG:HI → LO to I(OUT) > 100 mA,
CE = LO, I_O(OUT) = 1 A, V(BAT) = 3.5 V
25
35 ms
T_PWRUP(EN)
Charge enable to full charge
current delay
Measured from CE:HI → LO to I(OUT) >100 mA,
I_O(OUT) = 1A, V_(BAT)= 3.5 V, V_(IN) = 4.5 V, Input
power detected
25
35 ms
T_PWRUP(LDO)
Input power detection to voltage
regulation delay, LDO mode set,
no battery or load connected
Measured from PG:HI → LO to V(OUT) > 90% of
charge voltage regulation;
V_(TMR) = OPEN, LDO mode set, no battery and no
load at OUT pin, CE = LO
25
35 ms
PRECHARGE AND OUTPUT SHORT-CIRCUIT CURRENT REGULATION, V(IN)–V(OUT) > V(DO-MAX) , V(IN) ≥ 4.5V, CHARGER
ENABLED, NO FAULT CONDITIONS DETECTED, RTMR = 50K or V(TMR)=OPEN; Thermal regulation loop not active
V_(LOWV)
Precharge to fast-charge transition
threshold
V_(BAT) increasing
2.8 2.95 3.15 V
V_(SCIND)
V_(SC)
Short-circuit indication
Precharge to short-circuit
transition threshold
V_(BAT) decreasing
V_(BAT) decreasing
1.2 1.4 1.6
V
1.6 1.8 2.0
I_O(PRECHG)
Precharge current range
V_(SC) < V_I(BAT) < V_(LOWV), t < T_(PRECHG)
I_O(PRECHG) = K_(SET)× V_(PRECHG)/R_(ISET)
10
100 mA
V_(PRECHG)
Precharge set voltage
V_(ISET) = V_(PRECHG),
V_(SC) < V_I(BAT) < V_(LOWV),
t < T_(PRECHG)
225 250 280 mV
I_O(SHORT)
Output shorted regulation current
I_O(SHORT) = I_(OUT), V_(BAT)= VSS
V_POR < V_IN < 6.0
V
6.0 V < V_IN
15
22
30
mA
25
TEMPERATURE REGULATION (Thermal regulation™), CHARGER ENABLED, NO FAULT CONDITIONS DETECTED
T_J(REG)
Temperature regulation limit
V(IN) = 5.5 V, V(BAT) = 3.2 V, Fast charge
current set to 1A
101 112 125 °C
I_{(MIN_TJ(REG))}
Minimum current in thermal
regulation
V(LOWV) < V(BAT) < VO(REG), 0.7kΩ < RISET
< 3.5kΩ
200 250 mA
4
Submit Documentation Feedback