BQ500412 Datasheet, PDF (4/28 Pages) Texas Instruments – Low System Cost, Wireless Power Controller for WPC TX A6

bq500412
SLUSBO2A – NOVEMBER 2013 – REVISED DECEMBER 2013
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
SUPPLY CURRENT
I_V33A
I_V33D
Supply current
I_TOTAL
INTERNAL REGULATOR CONTROLLER INPUTS/OUTPUTS
V33A = 3.3 V
V33D = 3.3 V
V33D = V33A = 3.3 V
V33
3.3-V linear regulator
Emitter of NPN transistor
V33FB
3.3-V linear regulator feedback
I_V33FB
Beta
Series pass base drive
Series NPN pass device
V_IN = 12 V; current into V33FB pin
EXTERNALLY SUPPLIED 3.3 V POWER
V33D
V33A
V33Slew
Digital 3.3-V power
Analog 3.3-V power
V33 slew rate
T_A = 25°C
T_A = 25°C
V33 slew rate between 2.3 V and 2.9 V,
V33A = V33D
DIGITAL DEMODULATION INPUTS COMM_A+, COMM_A-, COMM_B+, COMM_B-
V_bias
COMM+,
COMM-
COMM+ Bias Voltage
Modulation voltage digital resolution
R_EA
Input impedance
Ground reference
I_OFFSET
Input offset current
1-kΩ source impedance
ANALOG INPUTS V_SENSE, I_SENSE, T_SENSE, LED_MODE, LOSS_THR, SNOOZE_CAP, PWR_UP
V_{ADDR_OPEN}
V_{ADDR_SHORT}
V_{ADC_RANGE}
INL
Voltage indicating open pin
Voltage indicating pin shorted to GND
Measurement range for voltage monitoring
ADC integral nonlinearity
LED_MODE open
LED_MODE shorted to ground
ALL ANALOG INPUTS
R_IN
Input impedance
C_IN
Input capacitance
DIGITAL INPUTS/OUTPUTS
Ground reference
V_OL
Low-level output voltage
I_OL = 6 mA , V33D = 3 V
V_OH
High-level output voltage
V_IH
High-level input voltage
V_IL
Low-level input voltage
I_OH(MAX)
Output high source current
I_OL(MAX)
Output low sink current
SYSTEM PERFORMANCE
V_RESET
t_RESET
f_SW
Voltage where device comes out of reset
Pulse width needed for reset
Switching Frequency
I_OH = -6 mA , V33D = 3 V
V33D = 3V
V33D = 3.5 V
V33D Pin
RESET pin
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MIN TYP
MAX UNIT
8
15
44
55 mA
52
60
3.25
3.3
4
10
40
3.6
V
4.6
mA
3
3.6
V
3
3.6
0.25
V/ms
0.5
–5
2.37
0
-2.5
8
V33D
- 0.6V
2.1
2
112
1.0
V
1
mV
1.5
3 MΩ
5 µA
0.36
V
2.5
2.5 mV
MΩ
10 pF
DGND1
+ 0.25
V
3.6
1.4
4
mA
4
2.4
V
µs
205 kHz
4
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