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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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FUNCTIONAL BLOCK DIAGRAM (Charge Mode)
bq24153
bq24156, bq24158
SLUSA27 – MARCH 2010
PMID
PMID
PMID
VBUS
VBUS
PGND
PGND
PGND
V BUS
NMOS
VREF 1
Q1
Charge
Pump
I IN _ LIMIT
V BUS
V UVLO
V BUS
V IN ( MIN )
V BUS
V OVP_IN
TJ
T SHTDWN
V OUT
V OVP
V IN _ DPM
T CF
TJ
+
-
+
-
+
-
+
-
+
-
V PMID
OSC
-
+
-
+
-
+
-
VBUS UVLO
Poor Input
Source
VBUS OVP
Thermal
Shutdown
* Battery OVP
b q 24153 /6 /8
NMOS
Q2
PWM
Controller
CBC
Current
Limiting
PWM _ CHG
CHARGE CONTROL
,
TIMER and DISPLAY
LOGIC
I LIMIT
-
+
-
Q3
NMOS
+
V OUT
-
V OREG
V CSIN
IOCHARGE
VREF
I SHORT
LINEAR _CHG
VREF
REFERNCES
& BIAS
V PMID
VREF 1
VOUT
V BAT
V BUS
V OREG - V RCH
V OUT
V OUT
V CSIN
I TERM
V BAT
V SHORT
+
* Sleep
-
+
-
* Recharge
-
+*
-
Termination
+
* PWM Charge
-
Mode
* Signal Deglitched
( I2 C Control )
Decoder
DAC
Figure 23. Function Block Diagram of bq2415x in Charge Mode
SW
SW
SW
CSOUT
CSIN
VREF
BOOT
STAT
CD
OTG (bq 24153 /8)
SLRST ( bq24156 )
SCL
SDA
Copyright © 2010, Texas Instruments Incorporated
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