BQ25015 Datasheet, PDF (3/28 Pages) Texas Instruments – SINGLE-CHIP CHARGER AND DC/DC CONVERTER IC FOR PORTABLE APPLICATIONS

bq25015
bq25017
www.ti.com
SLUS721A – DECEMBER 2006 – REVISED MARCH 2007
ELECTRICAL CHARACTERISTICS
over operating temperature range (T_A = 0°C to 125°C) and recommended supply voltage range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
INPUT CURRENT
I_CC(VCC)
Supply current 1, VCC
V_VCC > V_VCC(min)
I_CC(SLP)
Sleep current
Sum of currents into OUT/BAT,
V_VCC < V_(SLP)
I_CC(STDBY)
Standyby current
CE = High, 0°C ≤ T_J≤ 85°C
I_IB(OUT)
Input current, OUT
Charge DONE, V_VCC > V_VCC(min),
I_OUT(SW) = 0 mA, Converter not switching
I_IB(CE)
Input current, CE
CHARGE VOLTAGE REGULATION (V_BAT(REG) + V_(DO-MAX) ≤ V_VCC, I_(TERM) < I_OUT(BAT)≤ 0.5 A)
V_REG(BAT)
Charger regulation voltage
Charge voltage regulation
accuracy
T_A = 25°C
–0.35%
–1%
1.2
2.0 mA
2
5
150
µA
15
35
1
4.2
V
0.35%
1%
(V_(AC)– V_(OUT))
AC dropout voltage
(V_(USB)– V_(OUT)) USB dropout voltage
CHARGE CURRENT REGULATION
V_{OUT (BAT)} = V_{REG (BAT)}, I_OUT(BAT)= 0.5 A
V_{OUT (BAT)} = V_{REG (BAT)}, ISET2 = High
V_{OUT (BAT)} = V_{REG (BAT)}, ISET2 = Low
175
250
350
500 mV
60
100
I_{OUT (BAT)}
AC output current range
V_VCC≥ 4.5 V, V_{OUT (BAT)} = V_(LOWV),
V_VCC– V_{OUT (BAT)} > V_(DO-MAX),
I_OUT(BAT) = (K_(SET) × V_(SET) / R_SET)
I_{OUT (BAT)}
USB output current range
V_VCC(min)≥ 4.5 V, V_{OUT (BAT)} = V_(LOWV),
V_VCC– V_{OUT (BAT)} > V_(DO-MAX), ISET2= Low
V_VCC(min)≥ 4.5 V, V_{OUT (BAT)} = V_(LOWV),
V_VCC– V_{OUT (BAT)} > V_(DO-MAX), ISET2 = High
V_(SET)
Output current set voltage
Voltage on ISET1, V_VCC≥ 4.5 V,
V_{OUT (BAT)} = V_(LOWV),
V_VCC– V_{OUT (BAT)} > V_(DO-MAX), ISET2 = High
50 mA ≤ I_OUT(OUT)≤ 1000 mA
K_(SET)
Output current set factor
10 mA ≤ I_OUT(OUT)≤ 50 mA
10 mA ≤ I_OUT(OUT)≤ 10 mA
PRECHARGE and SHORT-CIRCUIT CURRENT REGULATION
50
80
400
2.436
307
296
246
2.500
322
320
320
500
100 ^mA
500
2.538 V
337
346
416
V_(LOWV)
Precharge to fast-charge
transition threshold
Voltage on OUT/BAT
2.8
3.0
3.2 V
t_{PRECHG_DG}
Deglitch time for fast-charge
to precharge transition
V_VCC(min)≥ 4.5 V, t_FALL = 100 ns,
10 mV overdrive,
V_IN(BAT) decreasing below threshold
I_OUT(PRECHG)
Precharge range
0 V < V_IN(BAT) < V_(LOWV), t < t_(PRECHG),
I_OUT(PRECHG) = (K_(SET) × V_(PRECHG))/ R_SET
V_(PRECHG)
Precharge set voltage
Voltage on ISET1, V_REG(BAT) = 4.2 V,
0 V < V_IN(BAT) < V_(LOWV),
t < t_(PRECHG)
CHARGE TAPER and TERMINATION DETECTION
250
375
5
240
255
500 ms
100 mA
270 mV
I_(TAPER)
V_(TAPER)
V_(TERM)
Charge taper detection range
Charge taper detection set
voltage
Charge termination detection
set voltage
V_IN(BAT) > V_(RCH), t < t_(PRECHG),
I_(TAPER) = (K_(SET) × V_(TAPER))/ R_SET
Voltage on ISET1, V_REG(BAT) = 4.2 V,
V_IN(BAT) > V_(RCH), t < t_(PRECHG)
Voltage on ISET1, V_REG(BAT) = 4.2 V,
V_IN(BAT) > V_(RCH), t < t_(PRECHG),
I_(TERM) = (K_(SET) × V_(TERM))/ R_SET
5
235
250
11
18
100 mA
265
mV
25
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