Datasheet

UCD9244
www.ti.com SLVSAL6A –NOVEMBER 2010–REVISED FEBRUARY 2011
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN NOM MAX UNIT
SUPPLY CURRENT
I
V33A
V
33A
= 3.3 V 8 15 mA
I
V33DIO
V
33DIO
= 3.3 V 2 10
Supply current
I
V33D
V
33D
= 3.3 V 40 45
I
V33D
V
33D
= 3.3 V storing configuration parameters 50 55
in flash memory
INTERNAL REGULATOR CONTROLLER INPUTS/OUTPUTS
V
33
3.3-V linear regulator Emitter of NPN transistor 3.25 3.3 3.6 V
V
33FB
3.3-V linear regulator feedback 4 4.6
I
V33FB
Series pass base drive V
IN
= 12 V 0.2 0.4 8 mA
Beta Series NPN pass device 40
EXTERNALLY SUPPLIED 3.3 V POWER
V
33D
, V
33DIO1
, Digital 3.3-V power T
A
= 25° C 3.0 3.6 V
V
33DIO2
V33A Analog 3.3-V power T
A
= 25° C 3.0 3.6 V
ERROR AMPLIFIER INPUTS EAPn, EANn
V
CM
Common mode voltage each pin –0.15 1.848 V
V
ERROR
Internal error Voltage range AFE_GAIN field of CLA_GAINS = 1X
(1)
–256 248 mV
EAP-EAN Error voltage digital resolution AFE_GAIN field of CLA_Gains = 8X 1 mV
R
EA
Input Impedance Ground reference 0.5 1.5 3 MΩ
I
OFFSET
Input offset current 1 kΩ source impedance –5 5 µA
Vref 10-bit DAC
V
ref
Reference Voltage Setpoint 0 1.6 V
V
refres
Reference Voltage Resolution 1.56 mV
ANALOG INPUTS CS1A, CS2A, CS3A, CS4A,VinMon, Temp1, Temp2, Temp3, Temp4, Addr0, Addr1
V
ADC_RANGE
Measurement range for voltage Inputs: VinMon, Temp1, Temp2, Temp3, 0 2.5 V
monitoring Temp4, CS1A, CS2A, CS3A, CS4A
Voffset input offset voltage –15 15 mV
V
OC_THRS
Over-current comparator threshold Inputs: CS1A, CS2A, CS3A, CS4A 0.032 2 V
voltage range
(2)
V
OC_RES
Over-current comparator threshold Inputs: CS1A, CS2A, CS3A, CS4A 31.25 mV
voltage range
Temp
internal
Int. temperature sense accuracy Over range from 0°C to 100°C –15 15 °C
INL ADC integral nonlinearity –2.5 2.5 mV
I
lkg
Input leakage current 3V applied to pin 100 nA
R
IN
Input impedance Ground reference 8 MΩ
C
IN
Current Sense Input capacitance 10 pF
(1) See the UCD92xx PMBus Command Reference for the description of the AFE_GAIN field of CLA_GAINS command.
(2) Can be disabled by setting to '0'
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