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BQ24153 Просмотр технического описания (PDF) - Texas Instruments

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BQ24153 Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support TI
Texas Instruments TI
BQ24153 Datasheet PDF : 41 Pages
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www.ti.com
NAME
STAT
VREF
CD
PIN
NO.
C4
E3
E2
OTG
(bq24153/8 only)
D4
SLRST
(bq24156 only)
D4
bq24153
bq24156, bq24158
SLUSA27 – MARCH 2010
PIN FUNCTIONS (continued)
I/O
DESCRIPTION
Charge status pin. Pull low when charge in progress. Open drain for other conditions. During faults, a 128-ms
O pulse is sent out. STAT pin can be disabled by the EN_STAT bit in control register. STAT can be used to
drive a LED or communicate with a host processor.
O
Internal bias regulator voltage. Connect a 1µF ceramic capacitor from this output to PGND. External load on
VREF is not recommended.
Charge disable control pin. CD=0, charge is enabled. CD=1, charge is disabled and VBUS pin is high
I impedance to GND. In 15min mode, Setting CD=1 resets the 15min timer; while in 32s mode,Setting CD=1
will NOT reset the 32-second timer.
Boost mode enable control or input current limiting selection pin. When OTG is in active status, bq24153/8 is
I forced to operate in boost mode. It has higher priority over I2C control and can be disabled using the control
register. At POR, the OTG pin is default to be used as the input current limiting selection pin. When
OTG=High, IIN_LIMIT=500mA and when OTG=Low, IIN_LIMIT=100mA, refer to Control Register for detail.
Safety limit register reset control. When SLRST=0, bq24156 resets all the safety limits (06H) to default
I values, regardless of the write actions to safety limits registers (06H). When SLRST=1, bq24156 can program
the safety limit register until any write action to other registers locks the programmed safety limits.
PART NUMBER
bq24153YFFR
bq24153YFFT
bq24156YFFR
bq24156YFFT
bq24158YFFR
bq24158YFFT
ORDERING INFORMATION(1)
MARKING
MEDIUM
bq24153
Tape and Reel
bq24153
Tape and Reel
bq24156
Tape and Reel
bq24156
Tape and Reel
bq24158
Tape and Reel
bq24158
Tape and Reel
QUANTITY
3000
250
3000
250
3000
250
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
PACKAGE DISSIPATION RATINGS(1)
PACKAGE
WSCP-20 (1)
RqJA
76°C/W (2)
RqJC
1.57°C/W
TA 25°C
POWER RATING
1.32 W
DERATING FACTOR
TA > 25°C
0.0132 W/°C
(1) Maximum power dissipation is a function of TJ(max), RqJA and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = [TJ(max)–TA] / RqJA.
(2) Using JEDEC 4-layer High-K board.
Copyright © 2010, Texas Instruments Incorporated
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