LT8630EFE (Note 2) ............................... –40°C to 125°C
LT8630IFE (Note 2) ................................ –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
GND
21
TR/SS 10
FE PACKAGE
VARIATION FE20(16)
20-LEAD PLASTIC TSSOP
θ
JA
= 40°C/W,
θ
JC(PAD)
= 10°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
(http://www.linear.com/product/LTC8630#orderinfo)
LEAD FREE FINISH
LT8630EFE#PBF
LT8630IFE#PBF
TAPE AND REEL
LT8630EFE#TRPBF
LT8630IFE#TRPBF
PART MARKING*
8630PE
8630PE
PACKAGE DESCRIPTION
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
IN
= 15V, V
EN/UV
= 2V, unless otherwise specified. (Note 2)
PARAMETER
EN/UV Voltage Threshold
EN/UV Voltage Hysteresis
EN/UV Input Current
V
IN
Undervoltage Lockout
Quiescent Current from V
IN
Quiescent Current from V
OUT
V
IN
Current in Regulation
V
FB
= 0.9V
V
EN/UV
= 0V
V
FB
= 0.9V, V
VOUT
= 0V
V
FB
= 0.9V, V
VOUT
= 5V
V
FB
= 0.9V, V
VOUT
= 5V
V
VOUT
= 5V, I
LOAD
= 100µA
V
VOUT
= 5V, I
LOAD
= 1mA
l
l
l
l
l
elecTrical characTerisTics
CONDITIONS
V
EN/UV
Rising
MIN
l
TYP
1.19
17
5
2.8
5
16
3.6
10
90
475
MAX
1.24
26
100
3.05
15
50
10
45
180
650
UNITS
V
mV
nA
V
µA
µA
µA
µA
µA
µA
8630f
1.14
10
2.74
2
For more information
www.linear.com/LT8630
LT8630
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
IN
= 15V, V
EN/UV
= 2V, unless otherwise specified. (Note 2)
PARAMETER
Feedback Bias Current
Feedback Voltage (V
FBREF
)
Feedback Voltage Regulation
Track/Soft-Start Source Current
Track/Soft-Start VOH
Track/Soft-Start Sink Current
Track/Soft-Start VOL
Track/Soft-Start to Feedback Offset
PG Leakage Current
PG Lower Threshold % of V
FBREF
(Note 5)
PG Upper Threshold % of V
FBREF
(Note 5)
PG Hysteresis
PG Sink Current
Minimum Switch ON Time
Minimum Switch OFF Time
IND to V
OUT
Peak Current (Note 6)
Maximum V
OUT
Current in Regulation
Switch Pin Leakage Current
Top Switch On-Resistance
Bottom Switch On-Resistance
BST Pin Current
BST Pin Threshold (Note 7)
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:
The LT8630EFE 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
LT8630IFE is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3:
The LT8630 includes overtemperature protection that is intended
to protect the device during thermal overload conditions. Internal junction
temperature will exceed 150°C before the overtemperature circuitry
becomes active.
V
BST
= 18V
V
FB
= 0.7V, V
PG
= 0.2V
V
IN
= 95V, V
VOUT
= 5V, I
LOAD
= 0A
V
IN
= 5V, V
VOUT
= 5V, I
LOAD
= 500mA, L = 15µH
V
IN
= 6V
V
IN
= 10V, V
VOUT
= 5V, L = 15µH
V
IN
= 50V, V
VOUT
= 5V, L = 15µH
V
SW
= 0V, V
IN
= 100V, V
EN
= 0V
V
SW
= 100V, V
IN
= 100V, V
EN
= 0V
l
elecTrical characTerisTics
CONDITIONS
V
FB
= 0.8V
MIN
–25
l
TYP
–15
808
808
–4.5
3.0
30
50
5
230
0
–7.5
7.5
1.9
900
150
2.1
MAX
820
824
–2.5
3.4
45
75
30
200
–4.5
11.5
2.3
UNITS
nA
mV
mV
µA
V
µA
mV
mV
µA
nA
%
%
%
µA
ns
µs
V
VOUT
= 5V, I
LOAD
= 100mA
V
IN
= 7V to 100V, I
LOAD
= 0.1A to 0.75A, V
VOUT
= 5V
V
FB
= 0.9V, V
TR/SS
= 0
V
FB
= 0.9V
V
FB
= 0.7V, V
TR/SS
= 1V
V
FB
= 0V
V
TR/SS
= 0.4V, V
VOUT
= 5V, I
LOAD
= 100mA
V
FB
= 0V, V
PG
= 100V
V
FB
Rising
V
FB
Falling
796
792
–6.5
2.9
15
–30
180
–200
Track/Soft-Start Sink Current POR (Note 4) V
FB
= 0.9V, V
TR/SS
= 0.2V
l
l
–11.5
4.5
1.4
1.6
0.8
0.6
2.0
1.1
0.9
50
0.5
775
550
180
2.4
2.7
1.4
2.0
500
2.0
A
A
A
nA
µA
mΩ
mΩ
µA
V
Note 4:
An internal power on reset (POR) latch is set on the positive
transition of the EN/UV pin through its threshold or thermal shutdown.
The output of the latch activates a current source on the TR/SS pin which
typically sinks 230µA while discharging the TR/SS capacitor. The latch is
reset when the TR/SS pin is driven below the soft-start POR threshold or
the EN/UV pin is taken below its threshold.
Note 5:
The threshold is expressed as a percentage of the feedback
reference voltage.
Note 6:
The IND to V
OUT
peak current is defined as the maximum value of
current flowing from the IND pin to the V
OUT
during a switch cycle.
Note 7:
The BST pin threshold is defined as the minimum voltage between
the BST and SW pins to keep the top switch on. If the the voltage falls
below the threshold when the top switch is on, a minimum switch off
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