, SYNC Voltage . ..................................................6V
Operating Junction Temperature Range (Note 2)
LT8610AE/LT8610ABE ........................... –40 to 125°C
LT8610AI/LT8610ABI ............................. –40 to 125°C
LT8610AH/LT8610ABH .......................... –40 to 150°C
Storage Temperature Range ......................–65 to 150°C
PIN CONFIGURATION
LT8610A, LT8610AB
TOP VIEW
SYNC
TR/SS
RT
EN/UV
V
IN
V
IN
NC
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
FB
PG
BIAS
INTV
CC
BST
SW
SW
SW
SYNC
TR/SS
RT
EN/UV
V
IN
V
IN
NC
GND
1
2
3
4
5
6
7
8
LT8610A-3.3, LT8610A-5, LT8610AB-3.3, LT8610AB-5
TOP VIEW
16
15
14
13
12
11
10
9
V
OUT
PG
BIAS
INTV
CC
BST
SW
SW
SW
17
GND
17
GND
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 40°C/W,
θ
JC(PAD)
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 40°C/W,
θ
JC(PAD)
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT8610AEMSE#PBF
LT8610AEMSE-3.3#PBF
LT8610AEMSE-5#PBF
LT8610AIMSE#PBF
LT8610AIMSE-3.3#PBF
LT8610AIMSE-5#PBF
LT8610AHMSE#PBF
LT8610AHMSE-3.3#PBF
LT8610AHMSE-5#PBF
LT8610ABEMSE#PBF
LT8610ABEMSE-3.3#PBF
LT8610ABEMSE-5#PBF
LT8610ABIMSE#PBF
LT8610ABIMSE-3.3#PBF
LT8610ABIMSE-5#PBF
LT8610ABHMSE#PBF
LT8610ABHMSE-3.3#PBF
LT8610ABHMSE-5#PBF
TAPE AND REEL
LT8610AEMSE#TRPBF
LT8610AEMSE-3.3#TRPBF
LT8610AEMSE-5#TRPBF
LT8610AIMSE#TRPBF
LT8610AIMSE-3.3#TRPBF
LT8610AIMSE-5#TRPBF
LT8610AHMSE#TRPBF
LT8610AHMSE-3.3#TRPBF
LT8610AHMSE-5#TRPBF
LT8610ABEMSE#TRPBF
LT8610ABEMSE-3.3#TRPBF
LT8610ABEMSE-5#TRPBF
LT8610ABIMSE#TRPBF
LT8610ABIMSE-3.3#TRPBF
LT8610ABIMSE-5#TRPBF
LT8610ABHMSE#TRPBF
LT8610ABHMSE-3.3#TRPBF
LT8610ABHMSE-5#TRPBF
PART MARKING*
8610A
610A33
8610A5
8610A
610A33
8610A5
8610A
610A33
8610A5
8610AB
10AB33
610AB5
8610AB
10AB33
610AB5
8610AB
10AB33
610AB5
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 150°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 150°C
–40°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
8610abfa
2
For more information
www.linear.com/LT8610A
LT8610A/LT8610AB Series
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Input Voltage
V
IN
Quiescent Current
CONDITIONS
(Note 4)
V
EN/UV
= 0V
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
MIN
TYP
2.9
1.0
1.0
1.7
1.7
0.26
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MAX
3.4
3
8
4
10
0.5
50
350
50
350
120
900
100
800
180
1200
150
1100
0.976
0.982
3.32
3.34
5.03
5.06
0.02
0.02
0.02
20
UNITS
V
µA
µA
µA
µA
mA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
V
V
V
V
V
%/V
%/V
%/V
nA
MΩ
MΩ
V
EN/UV
= 2V, Not Switching, V
SYNC
= 0V
l
V
EN/UV
= 2V, Not Switching, V
SYNC
= 2V
V
IN
Current in Regulation
V
OUT
= 0.97V, V
IN
= 6V, Output Load = 100µA (LT8610A)
V
OUT
= 0.97V, V
IN
= 6V, Output Load = 1mA (LT8610A)
V
OUT
= 0.97V, V
IN
= 6V, Output Load = 100µA (LT8610AB)
V
OUT
= 0.97V, V
IN
= 6V, Output Load = 1mA (LT8610AB)
V
OUT
= 3.3V, V
IN
= 8V, Output Load = 100µA (LT8610A-3.3)
V
OUT
= 3.3V, V
IN
= 8V, Output Load = 1mA (LT8610A-3.3)
V
OUT
= 3.3V, V
IN
= 8V, Output Load = 100µA (LT8610AB-3.3)
V
OUT
= 3.3V, V
IN
= 8V, Output Load = 1mA (LT8610AB-3.3)
V
OUT
= 5V, V
IN
= 8V, Output Load = 100µA (LT8610A-5)
V
OUT
= 5V, V
IN
= 8V, Output Load = 1mA (LT8610A-5)
V
OUT
= 5V, V
IN
= 8V, Output Load = 100µA (LT8610AB-5)
V
OUT
= 5V, V
IN
= 8V, Output Load = 1mA (LT8610AB-5)
V
IN
= 6V, I
LOAD
= 0.5A
V
IN
= 6V, I
LOAD
= 0.5A
V
IN
= 8V, I
LOAD
= 0.5A
V
IN
= 8V, I
LOAD
= 0.5A
V
IN
= 8V, I
LOAD
= 0.5A
V
IN
= 8V, I
LOAD
= 0.5A
V
IN
= 4V to 42V, I
LOAD
= 1A
V
IN
= 4V to 42V, I
LOAD
= 1A
V
IN
= 6V to 42V, I
LOAD
= 1A
V
FB
= 1V
24
210
24
210
60
540
55
500
100
790
80
730
0.964
0.958
3.28
3.26
4.97
4.94
0.970
0.970
3.30
3.30
5.00
5.00
0.004
0.004
0.004
–20
14.3
12.5
V
IN
Current in Regulation
Feedback Reference Voltage
(LT8610A/LT8610AB)
Output Voltage
(LT8610A-3.3/LT8610AB-3.3)
Output Voltage
(LT8610A-5/LT8610AB-5)
Feedback Voltage Line Regulation
(LT8610A/LT8610AB)
Voltage Line Regulation
(LT8610A-3.3/LT8610AB-3.3)
Voltage Line Regulation
(LT8610A-5/LT8610AB-5)
Feedback Pin Input Current
(LT8610A/LT8610AB)
Internal Feedback Resistor Divider
(LT8610A-3.3/LT8610AB-3.3)
Internal Feedback Resistor Divider
(LT8610A-5/LT8610AB-5)
INTV
CC
Voltage
INTV
CC
Undervoltage Lockout
BIAS Pin Current Consumption
Minimum On-Time
Minimum Off-Time
I
LOAD
= 0mA, V
BIAS
= 0V
I
LOAD
= 0mA, V
BIAS
= 3.3V
V
BIAS
= 3.3V, I
LOAD
= 1A, 2MHz
I
LOAD
= 1A, SYNC = 0V
I
LOAD
= 1A, SYNC = 3.3V
l
l
3.23
3.25
2.5
15
15
3.4
3.29
2.6
9
30
30
95
3.57
3.35
2.7
45
45
125
V
V
V
mA
ns
ns
ns
8610abfa
For more information
www.linear.com/LT8610A
3
LT8610A/LT8610AB Series
ELECTRICAL CHARACTERISTICS
PARAMETER
Oscillator Frequency
CONDITIONS
R
T
= 221k, I
LOAD
= 1A
R
T
= 60.4k, I
LOAD
= 1A
R
T
= 18.2k, I
LOAD
= 1A
I
SW
= 1A
LT8610A
LT8610AB
V
INTVCC
= 3.4V
V
IN
= 42V, V
SW
= 0V, 42V
EN/UV Rising
V
EN/UV
= 2V
V
FB
Falling
V
FB
Rising
V
PG
= 3.3V
V
PG
= 0.1V
SYNC Falling
SYNC Rising
V
SYNC
= 6V
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
MIN
180
665
1.85
5
5
3.4
–1.5
0.94
–20
6
–12
–40
680
0.8
1.6
–40
1.0
2.0
230
Note 3:
This IC includes overtemperature protection that is intended to
protect the device during overload conditions. Junction temperature will
exceed 150°C when overtemperature protection is active. Continuous
operation above the specified maximum operating junction temperature
will reduce lifetime.
Note 4:
For fixed output voltage versions, minimum input voltage will be
limited by output voltage.
1.1
2.0
9.0
–9.0
1.3
40
2000
1.4
2.4
40
3.2
1.0
40
20
12
–6
TYP
210
700
2.00
120
6.7
6.7
65
4.3
5.4
1.5
1.06
8
8
MAX
240
735
2.15
UNITS
kHz
kHz
MHz
mΩ
A
A
mΩ
A
µA
V
mV
nA
%
%
%
nA
Ω
V
V
nA
µA
Ω
Top Power NMOS On-Resistance
Top Power NMOS Current Limit
Bottom Power NMOS On-Resistance V
INTVCC
= 3.4V, I
SW
= 1A
Bottom Power NMOS Current Limit
SW Leakage Current
EN/UV Pin Threshold
EN/UV Pin Hysteresis
EN/UV Pin Current
PG Upper Threshold Offset from V
FB
PG Lower Threshold Offset from V
FB
PG Hysteresis
PG Leakage
PG Pull-Down Resistance
SYNC Threshold
SYNC Pin Current
TR/SS Source Current
TR/SS Pull-Down Resistance
Fault Condition, TR/SS = 0.1V
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 LT8610AE/LT8610ABE 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 LT8610AI/LT8610ABI is guaranteed over the full –40°C to 125°C
operating junction temperature range. The LT8610AH is guaranteed
over the full –40°C to 150°C operating junction temperature range. High
junction temperatures degrade operating lifetimes. Operating lifetime is
derated at junction temperatures greater than 125°C.
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