參數(shù)資料
型號(hào)： TWL2214CAGQER
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA48
封裝： MICRO, BGA-48
文件頁數(shù)： 2/36頁
文件大小： 511K
代理商： TWL2214CAGQER
TWL2214CA
POWER SUPPLY MANAGEMENT IC AND
LiIon BATTERY CHARGE CONTROL
SLVS321A – OCTOBER 2001 – REVISED JANUARY 2002
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
dual-interface serial bus: DISB
The DISB is a three-wire interface bus that incorporates both Phillips I2C and three-wire SPI. The SPI interface
used here is different from the standard SPI interface; it combines both transmit and receive channels into one
bidirectional port. It also incorporates the slave addressing topology to work like a bus and control many devices
at the same time. The interface does not have a selection pin to choose between the two protocols. It uses the
clock enable line to distinguish the communication format of the interface. When clock enable is high, the clock
and data lines work as a standard I2C interface. However, on the falling edge of clock enable, the device expects
the SPI protocol defined in the following section. The protocol includes a slave address identifier that allows the
lines to be connected to many devices similar to that of I2C serial bus. Speed also improves when eliminating
the master wait period to receive an acknowledge from the slave device.
battery charger control
This block provides the necessary signals to control the external circuits that perform the charger function. The
charging activities include battery pack wake-up, precharge, fast charge, and battery temperature monitoring.
This block also provides 2 ADC inputs for general measurement purposes. The input voltage level is from 0 V
to 2 V. This block also includes an oscillator generator circuit, which generates the clocks for the device. The
nominal frequency of the main clock is 500 kHz. It requires an external capacitor of 470 pF.
reference system
This block provides voltage reference and bias current for the internal circuitry.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
VCHG to GND
–0.3 V to 12 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All other terminals relative to GND
–0.3 V to 6.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating ambient temperature
–40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating junction temperature range, TJ
–25
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, TSTG
–55
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soldering temperature (for 10 seconds)
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
MIN
MAX
UNIT
VCHG
4.5
6
V
VDD1, VDD2, VDD3, VDD4, VDD5
3.3
4.3
V
High-level logic input, PWRKIN, SEL, CONT
0.7VDD1
VDD1
V
Low-level logic input, PWRKIN, SEL, CONT
GND
0.3VDD1
V
High-level logic input, PSH and CE
0.7VREG1
VREG1
V
Low-level logic input, PSH and CE
GND
0.3VREG1
V
Precharge current
100
mA
Operating free-air temperature, TA
–40
85
°C
logic level output
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
VOH of terminals PWRKOUT, IRQ, CE
IOH = –2 mA
0.8VREG1
VREG1
V
VOL of terminals PWRKOUT, IRQ, CE
IOL = 2 mA
GND
0.22VREG1
V
VOL of DATA
IOL = 2 mA
GND
0.22VREG1
V
VOH of XRST
IOH = –2 mA (open drain with 100 k internal pullup)
VREG1
V
VOL of XRST
IOL = 2 mA (open drain 100 k internal pullup)
GND
0.22VREG1
V
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