Datasheet

UCD90124A
www.ti.com SLVSAN8 –JANUARY 2012
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
Supply voltage during operation (V
33D
, V
33DIO
, V
33A
) 3 3.3 3.6 V
Operating free-air temperature range, T
A
–40 110 °C
Junction temperature, T
J
125 °C
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN NOM MAX UNIT
SUPPLY CURRENT
I
V33A
V
V33A
= 3.3 V 8 mA
I
V33DIO
V
V33DIO
= 3.3 V 2 mA
Supply current
(1)
I
V33D
V
V33D
= 3.3 V 40 mA
V
V33D
= 3.3 V, storing configuration parameters in
I
V33D
50 mA
flash memory
EXTERNALLY SUPPLIED 3.3V POWER
V
V33D
, V
V33DIO
Digital 3.3-V power T
A
= 25°C 3 3.6 V
V
V33A
, Analog 3.3-V power T
A
= 25°C 3 3.6 V
ANALOG INPUTS (MON1–MON13)
V
MON
Input voltage range MON1–MON9 0 2.5 V
MON10–MON13 0.2 2.5 V
INL ADC integral nonlinearity –2.5 2.5 mV
I
lkg
Input leakage current 3 V applied to pin 100 nA
I
OFFSET
Input offset current 1-kΩ source impedance –5 5 μA
MON1–MON9, ground reference 8 MΩ
R
IN
Input impedance
MON10–MON13, ground reference 0.5 1.5 3 MΩ
C
IN
Input capacitance 10 pF
t
CONVERT
ADC sample period 16 voltages sampled, 3.89 μsec/sample 400 μsec
ADC 2.5 V, internal reference accuracy 0°C to 125°C –0.5 0.5 %
V
REF
–40°C to 125°C –1 1 %
ANALOG INPUT (PMBUS_ADDRx)
I
BIAS
Bias current for PMBus Addr pins 9 11 μA
V
ADDR_OPEN
Voltage – open pin PMBUS_ADDR0, PMBUS_ADDR1 open 2.26 V
V
ADDR_SHORT
Voltage – shorted pin PMBUS_ADDR0, PMBUS_ADDR1 short to ground 0.124 V
T
internal
Internal temperature sense accuracy Over range from 0°C to 100°C -5 5 °C
DIGITAL INPUTS AND OUTPUTS
V
OL
Low-level output voltage I
OL
= 6 mA
(2)
, V
33DIO
= 3 V Dgnd + V
0.25
V
OH
High-level output voltage I
OH
= –6 mA
(3)
, V
33DIO
= 3 V V
33DIO
V
– 0.6
V
IH
High-level input voltage V
33DIO
= 3 V 2.1 3.6 V
V
IL
Low-level input voltage V
33DIO
= 3.5 V 1.4 V
FAN CONTROL INPUTS AND OUTPUTS
T
PWM_FREQ
FAN-PWM frequency FPWM1-8 15.259 125000 kHz
PWM1 10
PWM2 1
PWM3-4 0.001 7800
DUTY
PWM
FAN-PWM duty cycle range 0 100 %
Tach
RANGE
FAN-TACH resolution For 1 Tach pulse per revolution 30 RPM
t
MIN
FAN-TACH minimum pulse width Either positive or negative polarity 200 µs
(1) Typical supply current values are based on device programmed but not configured, and no peripherals connected to any pins.
(2) The maximum total current, I
OL
max, for all outputs combined, should not exceed 12 mA to hold the maximum voltage drop specified.
(3) The maximum total current, I
OH
max, for all outputs combined, should not exceed 48 mA to hold the maximum voltage drop specified.
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