LT8584HFEPBF Ver la hoja de datos (PDF) - Linear Technology
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LT8584HFEPBF Datasheet PDF : 36 Pages
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LT8584
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 4.2V, DIN = GND unless otherwise noted. (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Handshake Voltage Line Regulation
VTEMP Temperature Coefficient (TC)
VTEMP
OUT Pin Clamp Voltage
From VVIN = 2.5V to VVIN = 4.2V
Note 7, °K = (VCELL – VTEMP)/TC
VTEMP = VIN – VOUT, TJ = 25°C
10mA Sourced from Pin
0.2
0.75
2
0.658
l 1.53
1.6
%/V
mV/°K
V
V
OUT Pin Amplifier Load Regulation
IOUT = 10µA to 1mA
l
0
0.2
0.4
%/mA
Timing Characteristics The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. MODE = 0V. Refer to Timing Diagram for parameter definition. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tW
Decode Window Duration
Decode Window Range
RRTMR = 10kΩ
RRTMR = 50kΩ
RRTMR = 100kΩ
RRTMR = 200kΩ
l 1.76
1.86
1.96
ms
l
8
8.4
8.8
ms
l 15.6
16.4
17.2
ms
l 29.3
31.5
33.7
ms
l 1.76
33.7
ms
tRST
DIN Serial Communication Reset Time
t1
RTMR Start-Up Time
RRTMR = 10kΩ
t2
DIN Hold-Off Time
t3
DIN High Time
t4
DIN Low Time
t5
Discharger Activation Time
RRTMR = 10kΩ
t6
Discharger Deactivation Time
SR
DIN Slew Rate
l
10
l
1.8
5
l
50
l
50
l
50
900
2.1
l
9
µs
µs
µs
µs
µs
ns
µs
V/ms
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: Do not apply a positive or negative voltage or current source to
RTMR, otherwise permanent damage may occur.
Note 3: ABSMAX rating refers to the maximum DC + AC leakage spike. Do
not exceed 40VDC on any of the SW pins.
Note 4: The LT8584E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization, and correlation with statistical process controls. The
LT8584I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8584H is guaranteed over the full –40°C to
150°C operating junction temperature range.
Note 5: This is a measure of time duration from the onset of the switch
turning on to the time the short-circuit protection circuit is disabled. If the
current comparator trips during this duration, the switch error latch is set.
This indicates that the connection to the transformer primary is most likely
shorted.
Note 6: This is a measure of time duration for the switch clamp to operate
continuously without setting the switch error latch. If the switch clamp
remains engaged longer than the switch clamp blanking time, the switch
error latch is set and switching is disabled.
Note 7: The voltage proportional to temperature (VTEMP) is measured
on the OUT pin while in analog multiplexer MODE 3 or 4. VTEMP must be
subtracted from the VCELL voltage that is measured while in analog mux
MODE 1. Both measurements should be taken within 100ms of each other
to reduce errors in absolute temperature calculation.
8584fb
4
For more information www.linear.com/LT8584
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