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BQ24157S View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
BQ24157S 1.55-A Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support TI
Texas Instruments TI
BQ24157S Datasheet PDF : 45 Pages
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Not Recommended for New Designs
www.ti.com
bq24157S
SLUSB76B – FEBRUARY 2013 – REVISED MAY 2015
7.5 Electrical Characteristics
Circuit of Figure 28, VBUS = 5 V, HZ_MODE = 0, OPA_MODE = 0 (CD = 0), TJ = –40°C to 125°C, TJ = 25°C for typical
values (unless otherwise noted)
INPUT CURRENTS
PARAMETER
I(VBUS)
VBUS supply current control
Ilgk
Leakage current from battery to VBUS pin
Battery discharge current in high impedance
mode, (CSIN, CSOUT, SW pins)
VOLTAGE REGULATION
V(OREG)
Output regulation voltage programable range
Voltage regulation accuracy
CURRENT REGULATION (FAST CHARGE)
IO(CHARGE)
Output charge current programmable range
Low charge current (default after POR in 15
min mode)
Regulation accuracy of the voltage across
R(SNS) (for charge current regulation)
V(IREG) = IO(CHARGE) × R(SNS)
WEAK BATTERY DETECTION
V(LOWV)
Weak battery voltage threshold programmable
range2 (1)
Weak battery voltage accuracy
Hysteresis for V(LOWV)
Deglitch time for weak battery threshold
CD, OTG, AND SLRST PIN LOGIC LEVEL
VIL
Input low threshold level
VIH
Input high threshold level
I(bias)
Input bias current
CHARGE TERMINATION DETECTION
I(TERM)
Termination charge current programmable
range
Deglitch time for charge termination
Regulation accuracy for termination current
across R(SNS)
V(IREG_TERM) = IO(TERM) × R(SNS)
BAD ADAPTOR DETECTION
VIN(min)
Input voltage lower limit
Deglitch time for VBUS rising above VIN(min)
Hysteresis for VIN(min)
ISHORT
Current source to GND
tINT
Detection Interval
INPUT BASED DYNAMIC POWER MANAGEMENT
VIN_DPM
Input Voltage DPM threshold programmable
range
VIN DPM threshold accuracy
TEST CONDITIONS
VBUS > VBUS(min), PWM switching
VBUS > VBUS(min), PWM not switching
0°C < TJ < 85°C, CD = 1 or HZ_MODE = 1
0°C < TJ < 85°C, V(CSOUT) = 4.2 V, high impedance
mode, VBUS = 0 V
0°C < TJ < 85°C, V(CSOUT) = 4.2 V, high impedance
mode, V = 0 V, SCL, SDA, OTG = 0 V or 1.8 V
Operating in voltage regulation, programmable
TA = 25°C
TA = -40°C to 125°C
V(LOWV) V(CSOUT) < V(OREG),
VBUS > V(SLP), R(SNS) = 68 m, LOW_CHG = 0,
Programmable
VLOWV VCSOUT < VOREG, VBUS > VSLP,
RSNS= 68 mΩ, LOW_CHG = 1, OTG = High
VLOWV VCSOUT < VOREG, VBUS > VSLP,
RSNS= 68 mΩ, LOW_CHG = 0, OTG = High
37.4 mV V(IREG)< 44.2 mV
44.2 mV V(IREG)
Adjustable using I2C control
Battery voltage falling
Rising voltage, 2-mV overdrive, tRISE = 100 ns
Voltage on control pin is 5 V
V(CSOUT) > V(OREG) – V(RCH),
VBUS > V(SLP), R(SNS) = 68 m, programmable
Both rising and falling, 2-mV overdrive,
tRISE, tFALL = 100 ns
3.4 mV V(IREG_TERM) 6.8 mV
6.8 mV < V(IREG_TERM) 17 mV
17 mV < V(IREG_TERM) 27.2 mV
Bad adaptor detection
Rising voltage, 2-mV overdrive, tRISE = 100 ns
Input voltage rising
During bad adaptor detection
Input power source detection
MIN TYP MAX UNIT
10
mA
5
15
23 μA
5 μA
23 μA
3.5
–0.5%
–1%
4.44
V
0.5%
1%
550
1250 mA
–3.5%
–3%
325
350
mA
550
569
3.5%
3%
3.4
–5%
100
30
3.7
V
5%
mV
ms
0.4
V
1.3
V
1.0 µA
50
–15%
–10%
–5.5%
400 mA
30
ms
15%
10%
5.5%
3.6
3.8
4.0
V
30
ms
100
200 mV
20
30
40 mA
2
s
4.2
–3%
4.76
V
1%
(1) While in DEFAULT mode, if a battery that is charged to a voltage higher than this voltage is inserted, the charger enters Hi-Z mode and
awaits I2C commands.
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