LTC3816_15 Datasheet, PDF (5/44 Pages) Linear Technology – Single-Phase Wide VIN Range DC/DC Controller for Intel IMVP-6/IMVP-6.5 CPUs

LTC3816
Electrical Characteristics The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C. V_IN = 12V, BSOURCE = EXTV_CC = 0V, VR_ON = 5V, unless
otherwise noted. (Notes 2, 3)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VID, DPRSLPVR, LFF Parameters
V_IL(VID)
VID Input Low Threshold
V_IH(VID)
VID Input High Threshold
I_VID
VID Input Leakage Current
V_DPRSLPVR DPRSLPVR Input Threshold
I_LFF
LFF Pull-Up Current
V_LFF
LFF Input Threshold
PWRGD, CLKEN#, VRTT#
0V ≤ V_VID ≤ 5V
V_IMON = INTV_CC (IMVP-6 Configuration)
V_LFF = 0V
0.3
V
0.7
V
±1
µA
1.6
V
–1
µA
1
V
V_PWRGD
Positive Power Good Threshold
Negative Power Good Threshold
With Respect to VID V_CC(CORE)
150
175
200
mV
–240 –270 –300
mV
I_LEAK
V_OL
t_PWRGD
t_CLKEN#
PWRGD, CLKEN# Leakage Current
VRTT# Leakage Current
PWRGD, CLKEN# Output Low Voltage
VRTT# Output Low Voltage
PWRGD Glitch Filter
CLKEN# Falling Edge Delay
V_PWRGD = V_CLKEN# = 5V
V_VRTT# = 3.3V
I_OUT = 2mA
I_OUT = 20mA
Power Good to Power Bad
Rising V_BOOT Edge to CLKEN#
Falling Edge
10
µA
100
µA
0.1
0.3
V
0.075 0.18
V
750
µs
l 50
75
100
µs
t_CLK(PWRGD)
t_VR(PWRGD)
CLKEN# to PWRGD Rising Edge Delay
VR_ON to PWRGD Falling Edge Delay
VR_ON Falling Edge
l
5
10
20
ms
100
ns
Note 1: Stresses beyond those listed under Absolute Maximum
Ratings may cause permanent damage to the device. Exposure to any
Absolute Maximum Rating condition for extended periods may affect
device reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of
device pins are negative. All voltages are referenced to ground unless
otherwise specified.
Note 3: The LTC3816 is tested under pulse load conditions such that
T_J ≈ T_A. The LTC3816E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 125°C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls. LTC3816I specifications are
guaranteed over the full –40°C to 125°C operating junction temperature
range. Note that the maximum ambient temperature consistent with
these specifications is determined by specific operating conditions in
conjunction with board layout, the rated package thermal impedance
and other environmental factors. T_J is calculated from the ambient
temperature, T_A, and power dissipation, P_D, according to the following
formula,
LTC3816EFE: T_J = T_A + (P_D • 29°C/W)
LTC3816EUHF: T_J = T_A + (P_D • 34°C/W)
Note 4: The dynamic input supply current is a function of the power
MOSFET gate charging (Q_G • f_OSC). See Applications Information for
more information.
Note 5: The LTC3816 is measured in a feedback loop that adjusts
V_CC(SEN) – V_SS(SEN) to achieve a specified COMP pin voltage. The AITC
amplifier is configured as an inverter with gain = –1.
Note 6: Guaranteed by design, not subject to test.
Note 7: On-resistance limit is guaranteed by design and correlation
with statistical process controls.
Note 8: The LTC3816 includes overtemperature protection that is
intended to protect the device during momentary overload conditions.
The maximum rated junction temperature will be exceeded when this
protection is active. Continuous operation above the specified absolute
maximum operating junction temperature may impair device reliability
or permanently damage the device.
3816f